{"id":7581,"date":"2026-06-22T17:23:21","date_gmt":"2026-06-22T14:23:21","guid":{"rendered":"https:\/\/weagro.ua\/blog\/secretele-conservarii-azotului-in-sol-de-la-fermierii-canadieni-cum-sa-nu-pierzi-uan-si-ureea-in-aer\/"},"modified":"2026-07-14T11:20:06","modified_gmt":"2026-07-14T08:20:06","slug":"secretele-conservarii-azotului-in-sol-de-la-fermierii-canadieni-cum-sa-nu-pierzi-uan-si-ureea-in-aer","status":"publish","type":"post","link":"https:\/\/weagro.ua\/ro\/blog\/secretele-conservarii-azotului-in-sol-de-la-fermierii-canadieni-cum-sa-nu-pierzi-uan-si-ureea-in-aer\/","title":{"rendered":"Secretele conserv\u0103rii azotului \u00een sol de la fermierii canadieni: cum s\u0103 nu pierzi UAN \u0219i ureea \u00een aer"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Azotul este scump \u2014 nu putem s\u0103-l pierdem<\/h2>\n\n<p class=\"wp-block-paragraph\">Azotul ast\u0103zi nu este doar un element nutritiv. Este una dintre cele mai scumpe investi\u021bii \u00een tehnologiile de cultivare a gr\u00e2ului, porumbului, rapi\u021bei, soiei, orzului, florii-soarelui \u0219i a altor culturi. Fiecare litru de UAN, fiecare ton\u0103 de uree \u0219i fiecare kilogram de substan\u021b\u0103 activ\u0103 trebuie s\u0103 lucreze pentru recolt\u0103, nu s\u0103 se piard\u0103 \u00een aer sub form\u0103 de amoniac.  <\/p>\n\n<p class=\"wp-block-paragraph\">De aceea, \u00een \u021b\u0103rile cu o cultur\u0103 agricol\u0103 ridicat\u0103, \u00een special \u00een Canada, fermierii privesc de mult azotul nu ca pe \u201edoar un \u00eengr\u0103\u0219\u0103m\u00e2nt\u201d, ci ca pe o resurs\u0103 care trebuie pozi\u021bionat\u0103 corect, protejat\u0103 corect \u0219i sincronizat\u0103 corect cu nevoile culturii. Abordarea canadian\u0103 este foarte practic\u0103: nu este suficient s\u0103 aplica\u021bi pur \u0219i simplu doza de azot. Trebuie s\u0103 face\u021bi \u00een a\u0219a fel \u00eenc\u00e2t acest azot s\u0103 r\u0103m\u00e2n\u0103 \u00een sistemul \u201esol \u2014 plant\u0103\u201d \u0219i s\u0103 fie disponibil culturii atunci c\u00e2nd ea chiar are nevoie de el.  <\/p>\n\n<p class=\"wp-block-paragraph\">Acest lucru este deosebit de relevant pentru exploata\u021biile agricole ucrainene, unde UAN \u0219i ureea sunt utilizate pe scar\u0103 larg\u0103 \u00een sistemele de nutri\u021bie pentru cereale, porumb, rapi\u021b\u0103, floarea-soarelui \u0219i soia. Problema este familiar\u0103 multor agronomi: au aplicat azot, au a\u0219teptat ploaia, dar ploaia nu vine. O zi, dou\u0103, cinci, o s\u0103pt\u0103m\u00e2n\u0103. Suprafa\u021ba solului se usuc\u0103, v\u00e2ntul se intensific\u0103, temperatura cre\u0219te \u0219i o parte din azot \u00eencepe s\u0103 se piard\u0103. Tocmai \u00een astfel de situa\u021bii apare \u00eentrebarea: cum s\u0103 p\u0103strezi azotul \u00een sol \u0219i s\u0103 nu pierzi banii?    <\/p>\n\n<p class=\"wp-block-paragraph\">Unul dintre r\u0103spunsuri este utilizarea corect\u0103 a inhibitorului de ureaz\u0103. Nu ca a unei \u201eaditivi magice\u201d, ci ca a unui instrument practic de asigurare a \u00eengr\u0103\u0219\u0103mintelor azotate \u00een condi\u021bii riscante. A\u0219a ar trebui privi\u021bi inhibitorii de ureaz\u0103: ei nu \u00eenlocuiesc agronomia, nu anuleaz\u0103 importan\u021ba umidit\u0103\u021bii, a modului de aplicare \u0219i a termenelor, dar ajut\u0103 la reducerea pierderilor de azot dup\u0103 aplicarea UAN sau a ureei.  <\/p>\n\n<h2 class=\"wp-block-heading\">De ce fermierii canadieni sunt at\u00e2t de aten\u021bi la azot<\/h2>\n\n<p class=\"wp-block-paragraph\">Canada este o \u021bar\u0103 cu suprafe\u021be mari, contraste meteorologice bru\u0219te \u0219i un pre\u021b ridicat al erorii. \u00cen prerii, fermierul poate avea o fereastr\u0103 tehnologic\u0103 scurt\u0103 pentru aplicarea \u00eengr\u0103\u0219\u0103mintelor, o prognoz\u0103 instabil\u0103 a precipita\u021biilor, v\u00e2nt, suprafa\u021ba uscat\u0103 a solului, miri\u0219te pe c\u00e2mp \u0219i nevoia de a acoperi rapid sute sau mii de hectare. \u00cen astfel de condi\u021bii, nutri\u021bia azotat\u0103 este \u00eentotdeauna un echilibru \u00eentre agronomie, vreme, tehnic\u0103 \u0219i economie.  <\/p>\n\n<p class=\"wp-block-paragraph\">Fermierii canadieni \u00een\u021beleg bine: dac\u0103 azotul este aplicat pe suprafa\u021b\u0103, dar nu este \u00eencorporat \u00een sol prin ploaie, prelucrare sau alt\u0103 metod\u0103, o parte din el poate fi pierdut\u0103 prin evaporarea amoniacului. Acest lucru se refer\u0103 \u00een special la uree \u0219i la partea amidic\u0103 a UAN. Prin urmare, principiul cheie sun\u0103 simplu: azotul trebuie s\u0103 lucreze, nu s\u0103 se evapore.  <\/p>\n\n<p class=\"wp-block-paragraph\">\u00cen aceasta const\u0103 secretul: nu \u00een a da \u00eentotdeauna o norm\u0103 mai mare de \u00eengr\u0103\u0219\u0103m\u00e2nt, ci \u00een a p\u0103stra ceea ce a fost deja aplicat. Controlul pierderilor de azot \u00eenseamn\u0103 controlul eficien\u021bei tehnologiei. Iar controlul eficien\u021bei tehnologiei \u00eenseamn\u0103 controlul profitului.  <\/p>\n<div class=\"banner banner--content\">\n    <div class=\"banner__inner\">\n                    <img decoding=\"async\" data-src=\"https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2024\/05\/banner-content.jpg.webp\"  class=\"banner__bg lazyload\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 780px; --smush-placeholder-aspect-ratio: 780\/222;\" \/>\n                <div class=\"banner__content\">\n            <div class=\"banner__text\">\n                <h4>Cump\u0103ra\u021bi acum, pl\u0103ti\u021bi mai t\u00e2rziu<\/h4>\n<h2>Plata \u00een rate agricole pentru produc\u0103torul agricol<\/h2>            <\/div>\n                                                \t\t\t\t\t\t\t        <\/div>\n    <\/div>\n<\/div>\n<h2 class=\"wp-block-heading\">Cum se pierde azotul dup\u0103 aplicarea UAN \u0219i ureei<\/h2>\n\n<p class=\"wp-block-paragraph\">Pentru a \u00een\u021belege valoarea inhibitorului de ureaz\u0103, trebuie s\u0103 \u00een\u021belegem ce se \u00eent\u00e2mpl\u0103 cu azotul dup\u0103 aplicare.<\/p>\n\n<p class=\"wp-block-paragraph\">Ureea, sau carbamida, con\u021bine aproximativ 46% azot \u00een form\u0103 amidic\u0103. UAN con\u021bine, de asemenea, o parte semnificativ\u0103 de azot amidic. \u00cen UAN sunt de obicei prezente trei forme de azot:  <\/p>\n\n<ul class=\"wp-block-list\">\n<li>forma nitric\u0103 \u2014 disponibil\u0103 plantei imediat;<\/li>\n\n\n\n<li>forma amoniacal\u0103 \u2014 par\u021bial disponibil\u0103 \u0219i trec\u00e2nd treptat \u00een forma nitric\u0103;<\/li>\n\n\n\n<li>forma amidic\u0103 \u2014 trebuie s\u0103 treac\u0103 prin transformare sub ac\u021biunea enzimei ureaza.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">Tocmai forma amidic\u0103 este cea mai interesant\u0103 din punctul de vedere al pierderilor. Ea nu r\u0103m\u00e2ne stabil\u0103 de la sine. \u00cen sol exist\u0103 enzima ureaza, care catalizeaz\u0103 descompunerea ureei. Ca rezultat, azotul amidic trece \u00een form\u0103 amoniacal\u0103, dar \u00een proces se poate forma amoniac. Dac\u0103 amoniacul nu este fixat \u00een sol, iar condi\u021biile favorizeaz\u0103 evaporarea, o parte din azot se pierde \u00een aer.    <\/p>\n\n<p class=\"wp-block-paragraph\">Mai simplu spus: fermierul a pl\u0103tit pentru azot, l-a adus pe c\u00e2mp, a aplicat \u00eengr\u0103\u0219\u0103m\u00e2ntul, dar dup\u0103 c\u00e2teva zile o parte din investi\u021bie poate pur \u0219i simplu s\u0103 \u201eplece\u201d sub form\u0103 de amoniac gazos. Iar cu c\u00e2t \u00eengr\u0103\u0219\u0103mintele sunt mai scumpe, cu at\u00e2t aceste pierderi sunt mai dureroase. <\/p>\n\n<h2 class=\"wp-block-heading\">Ce este ureaza \u0219i de ce este at\u00e2t de important\u0103<\/h2>\n\n<p class=\"wp-block-paragraph\">Ureaza este o enzim\u0103 care descompune ureea \u00een amoniac \u0219i dioxid de carbon. Ea se g\u0103se\u0219te \u00een microorganismele din sol, \u00een resturile vegetale, \u00een bacterii, ciuperci \u0219i particip\u0103 \u00een mod natural la ciclul azotului. Enzima, \u00een sine, nu este \u201erea\u201d. Problema apare atunci c\u00e2nd transformarea azotului amidic are loc prea repede \u0219i nu coincide cu nevoia culturii sau cu condi\u021biile de fixare a azotului \u00een sol.   <\/p>\n\n<p class=\"wp-block-paragraph\">Reac\u021bia poate fi descris\u0103 simplificat:<\/p>\n\n<p class=\"wp-block-paragraph\">uree + ap\u0103 \u2192 amoniac + dioxid de carbon<\/p>\n\n<p class=\"wp-block-paragraph\">Dac\u0103 dup\u0103 aplicarea ureei sau UAN cade o ploaie suficient\u0103 \u0219i azotul ajunge rapid \u00een sol, riscul de pierderi este mai mic. Dar dac\u0103 \u00eengr\u0103\u0219\u0103m\u00e2ntul r\u0103m\u00e2ne pe suprafa\u021b\u0103, solul este cald, vremea este v\u00e2ntoas\u0103, \u00eensorit\u0103, uscat\u0103 sau ploaia lipse\u0219te mult timp, pierderile pot cre\u0219te. <\/p>\n\n<p class=\"wp-block-paragraph\">Tocmai de aceea, \u00een practica canadian\u0103, se acord\u0103 o aten\u021bie mare nu doar normei de azot, ci \u0219i condi\u021biilor de aplicare. Fermierii evalueaz\u0103 dac\u0103 va ploua, dac\u0103 pot \u00eencorpora \u00eengr\u0103\u0219\u0103m\u00e2ntul, dac\u0103 exist\u0103 miri\u0219te pe suprafa\u021b\u0103, care este temperatura solului, care este riscul de pierderi \u0219i dac\u0103 este necesar s\u0103 se aplice un stabilizator de azot. <\/p>\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"584\" data-src=\"https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2026\/06\/sekrety_zberezhennya_azotu_v_grunti_5-1024x584.jpg.webp\" alt=\"\" class=\"wp-image-7492 lazyload\" data-srcset=\"https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2026\/06\/sekrety_zberezhennya_azotu_v_grunti_5-1024x584.jpg.webp 1024w, https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2026\/06\/sekrety_zberezhennya_azotu_v_grunti_5-300x171.jpg.webp 300w, https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2026\/06\/sekrety_zberezhennya_azotu_v_grunti_5-768x438.jpg.webp 768w, https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2026\/06\/sekrety_zberezhennya_azotu_v_grunti_5-1536x877.jpg.webp 1536w, https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2026\/06\/sekrety_zberezhennya_azotu_v_grunti_5.jpg.webp 1861w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/584;\" \/><\/figure>\n\n<h2 class=\"wp-block-heading\">Inhibitorul de ureaz\u0103: cum func\u021bioneaz\u0103<\/h2>\n\n<p class=\"wp-block-paragraph\">Inhibitorul de ureaz\u0103 este un preparat care blocheaz\u0103 sau inhib\u0103 temporar activitatea enzimei ureaza \u00een sol. \u00cen cazul preparatelor pe baz\u0103 de NBPT, \u00een special inhibitorul de ureaz\u0103 U-Guard, substan\u021ba activ\u0103 \u00eencetine\u0219te trecerea azotului amidic \u00een form\u0103 amoniacal\u0103. <\/p>\n\n<p class=\"wp-block-paragraph\">Asta nu \u00eenseamn\u0103 c\u0103 azotul \u201ese opre\u0219te pentru totdeauna\u201d. \u00censeamn\u0103 c\u0103 procesul de transformare devine mai lent \u0219i mai controlabil. Astfel, se reduce riscul form\u0103rii rapide a amoniacului la suprafa\u021ba solului \u0219i, \u00een consecin\u021b\u0103, se reduc pierderile de azot prin volatilizare.  <\/p>\n\n<p class=\"wp-block-paragraph\">\u00cen sens practic, pentru agronom, acest lucru sun\u0103 astfel:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>mai mult azot r\u0103m\u00e2ne \u00een sol;<\/li>\n\n\n\n<li>mai pu\u021bin azot se pierde \u00een aer;<\/li>\n\n\n\n<li>UAN \u0219i ureea lucreaz\u0103 mai eficient;<\/li>\n\n\n\n<li>fermierul are mai multe \u0219anse s\u0103 a\u0219tepte ploaia;<\/li>\n\n\n\n<li>planta prime\u0219te azot mai stabil;<\/li>\n\n\n\n<li>cheltuielile pentru \u00eengr\u0103\u0219\u0103minte sunt mai bine protejate.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">Inhibitorul de ureaz\u0103 U-Guard nu este un \u201e\u00eengr\u0103\u0219\u0103m\u00e2nt suplimentar\u201d. El nu adaug\u0103 azot nou \u00een sistem. Sarcina lui este alta: s\u0103 ajute la p\u0103strarea acelui azot pe care fermierul deja l-a cump\u0103rat \u0219i deja l-a aplicat.  <\/p>\n\n<h2 class=\"wp-block-heading\">De ce 7\u201310 zile f\u0103r\u0103 ploaie pot fi critice<\/h2>\n\n<p class=\"wp-block-paragraph\">Una dintre cele mai frecvente situa\u021bii pe c\u00e2mp: UAN sau ureea au fost aplicate, dar ploaia nu vine. Prognoza promitea precipita\u021bii, dar acestea au ocolit c\u00e2mpul. Apoi \u00eenc\u0103 o zi uscat\u0103, apoi v\u00e2nt, apoi soare, apoi temperatura cre\u0219te. \u00cen astfel de condi\u021bii, fermierul practic a\u0219teapt\u0103: fie ploaia va \u00eencorpora azotul \u00een sol, fie o parte din azot va fi pierdut\u0103.   <\/p>\n\n<p class=\"wp-block-paragraph\">Tocmai aici inhibitorul de ureaz\u0103 func\u021bioneaz\u0103 ca o asigurare simpl\u0103 pentru investi\u021biile \u00een \u00eengr\u0103\u0219\u0103minte. El ajut\u0103 la reducerea pierderilor de azot dup\u0103 aplicare \u0219i poate oferi aproximativ p\u00e2n\u0103 la 7\u201310 zile de protec\u021bie f\u0103r\u0103 ploaie. Acest lucru nu \u00eenseamn\u0103 c\u0103 po\u021bi ignora complet vremea. Dar \u00eenseamn\u0103 c\u0103 fermierul are mai mult timp pentru ca azotul s\u0103 r\u0103m\u00e2n\u0103 \u00eentr-o form\u0103 mai stabil\u0103 \u0219i mai pu\u021bin riscant\u0103 p\u00e2n\u0103 c\u00e2nd va ploua sau \u00eengr\u0103\u0219\u0103m\u00e2ntul va ajunge \u00een sol.   <\/p>\n\n<p class=\"wp-block-paragraph\">Formula este simpl\u0103:<\/p>\n\n<p class=\"wp-block-paragraph\">nu este ploaie dup\u0103 aplicare \u2192 inhibitorul va asigura<\/p>\n\n<p class=\"wp-block-paragraph\">Sau \u0219i mai scurt:<\/p>\n\n<p class=\"wp-block-paragraph\">UAN trebuie s\u0103 lucreze, nu s\u0103 se evapore.<\/p>\n<div class=\"banner banner--content\">\n    <div class=\"banner__inner\">\n                    <img decoding=\"async\" data-src=\"https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2024\/05\/banner-content.jpg.webp\"  class=\"banner__bg lazyload\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 780px; --smush-placeholder-aspect-ratio: 780\/222;\" \/>\n                <div class=\"banner__content\">\n            <div class=\"banner__text\">\n                <h4>Deveni\u021bi partener<\/h4>\n<h2>Credit agricol pentru agrobusiness<\/h2>            <\/div>\n                                                \t\t\t\t\t\t\t        <\/div>\n    <\/div>\n<\/div>\n<h2 class=\"wp-block-heading\">C\u00e2nd pierderile de azot sunt cele mai mari<\/h2>\n\n<p class=\"wp-block-paragraph\">Pierderile de azot prin evaporarea amoniacului pot cre\u0219te \u00een anumite condi\u021bii. Cele mai riscante situa\u021bii: <\/p>\n\n<ul class=\"wp-block-list\">\n<li>aplicarea superficial\u0103 a ureei f\u0103r\u0103 \u00eencorporare;<\/li>\n\n\n\n<li>aplicarea superficial\u0103 a UAN \u00een condi\u021bii uscate;<\/li>\n\n\n\n<li>absen\u021ba ploii dup\u0103 aplicare;<\/li>\n\n\n\n<li>sol cald;<\/li>\n\n\n\n<li>vreme v\u00e2ntoas\u0103;<\/li>\n\n\n\n<li>radia\u021bie solar\u0103 activ\u0103;<\/li>\n\n\n\n<li>suprafa\u021ba uscat\u0103 a solului;<\/li>\n\n\n\n<li>cantitate mare de resturi vegetale pe suprafa\u021b\u0103;<\/li>\n\n\n\n<li>doze mari de azot;<\/li>\n\n\n\n<li>aplicarea \u00eentr-o perioad\u0103 \u00een care cultura nu poate \u00eenc\u0103 utiliza rapid azotul;<\/li>\n\n\n\n<li>\u00eent\u00e2rziere \u00eentre aplicare \u0219i precipita\u021bii.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">\u00cen astfel de condi\u021bii, inhibitorul de ureaz\u0103 este cel mai justificat. Dac\u0103 \u00eengr\u0103\u0219\u0103m\u00e2ntul este \u00eencorporat imediat \u00een sol, dac\u0103 dup\u0103 aplicare cade rapid o ploaie suficient\u0103, dac\u0103 temperatura este sc\u0103zut\u0103 \u0219i riscul de evaporare este mic, efectul inhibitorului poate fi mai pu\u021bin vizibil. Aceasta este o logic\u0103 agronomic\u0103 normal\u0103: inhibitorul este cel mai necesar acolo unde exist\u0103 risc de pierderi.  <\/p>\n\n<h2 class=\"wp-block-heading\">Secretul canadian nr. 1: nu doar s\u0103 aplici azot, ci s\u0103-l protejezi<\/h2>\n\n<p class=\"wp-block-paragraph\">Una dintre abord\u0103rile cheie ale fermierilor canadieni este s\u0103 calculeze nu doar norma de aplicare, ci \u0219i eficien\u021ba utiliz\u0103rii azotului. Po\u021bi aplica mult, dar s\u0103 pierzi o parte. Sau po\u021bi aplica mai precis, s\u0103 protejezi mai bine \u0219i s\u0103 ob\u021bii o eficien\u021b\u0103 mai mare pentru fiecare kilogram de N.  <\/p>\n\n<p class=\"wp-block-paragraph\">De aceea, \u00een sistemul modern de nutri\u021bie se vorbe\u0219te tot mai des nu doar despre \u201ec\u00e2t azot s\u0103 d\u0103m\u201d, ci despre:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>\u00een ce form\u0103 este azotul;<\/li>\n\n\n\n<li>c\u00e2nd va fi disponibil plantei;<\/li>\n\n\n\n<li>c\u00e2t de repede se poate pierde;<\/li>\n\n\n\n<li>va ploua dup\u0103 aplicare;<\/li>\n\n\n\n<li>se poate aplica \u00eengr\u0103\u0219\u0103m\u00e2ntul mai aproape de nevoia culturii;<\/li>\n\n\n\n<li>este necesar s\u0103 se stabilizeze azotul;<\/li>\n\n\n\n<li>se va rentabiliza asigurarea suplimentar\u0103.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">Inhibitorul, \u00een aceast\u0103 logic\u0103, arat\u0103 foarte natural: este un instrument nu pentru a \u201evinde \u00eenc\u0103 un produs\u201d, ci pentru a ajuta \u00eengr\u0103\u0219\u0103m\u00e2ntul deja cump\u0103rat s\u0103 lucreze mai eficient.<\/p>\n\n<h2 class=\"wp-block-heading\">Secretul canadian nr. 2: ploaia dup\u0103 aplicare nu este o garan\u021bie, ci un factor de risc<\/h2>\n\n<p class=\"wp-block-paragraph\">Mul\u021bi fermieri planific\u0103 aplicarea ureei sau a UAN \u201e\u00eenainte de ploaie\u201d. Este o logic\u0103 corect\u0103, dar pe c\u00e2mp, \u00een realitate, prognoza nu func\u021bioneaz\u0103 \u00eentotdeauna. Mai ales \u00een ultimii ani, c\u00e2nd precipita\u021biile devin locale: pe un c\u00e2mp au c\u0103zut 8 mm, pe altul \u2014 1 mm, iar al treilea c\u00e2mp a r\u0103mas uscat.  <\/p>\n\n<p class=\"wp-block-paragraph\">Fermierii canadieni cunosc bine aceast\u0103 problem\u0103. Ei lucreaz\u0103 cu suprafe\u021be mari \u0219i nu pot a\u0219tepta \u00eentotdeauna fereastra perfect\u0103. Prin urmare, \u00een condi\u021biile \u00een care azotul este aplicat pe suprafa\u021b\u0103, iar ploaia este sub semnul \u00eentreb\u0103rii, inhibitorul de ureaz\u0103 devine o asigurare agronomic\u0103.  <\/p>\n\n<p class=\"wp-block-paragraph\">Sarcina lui nu este s\u0103 \u00eenlocuiasc\u0103 ploaia. Sarcina lui este s\u0103 ajute la p\u0103strarea azotului p\u00e2n\u0103 \u00een momentul \u00een care umiditatea va putea s\u0103-l mute \u00een sol. <\/p>\n\n<p class=\"wp-block-paragraph\">Mesaj scurt pentru exploata\u021bie:<\/p>\n\n<p class=\"wp-block-paragraph\">Nu este ploaie dup\u0103 aplicare? Nu risca\u021bi azotul \u2014 stabiliza\u021bi-l. <\/p>\n\n<h2 class=\"wp-block-heading\">Secretul canadian nr. 3: UAN necesit\u0103 aceea\u0219i aten\u021bie ca \u0219i ureea<\/h2>\n\n<p class=\"wp-block-paragraph\">Uneori fermierii cred c\u0103 problema pierderilor se refer\u0103 doar la uree. De fapt, UAN con\u021bine, de asemenea, form\u0103 amidic\u0103 de azot. \u00cen UAN, o parte din azot este disponibil\u0103 mai rapid, o parte trece treptat, dar frac\u021biunea amidic\u0103 trece, de asemenea, prin reac\u021bia ureazic\u0103.  <\/p>\n\n<p class=\"wp-block-paragraph\">UAN con\u021bine trei forme de azot:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>nitric\u0103 \u2014 rapid disponibil\u0103;<\/li>\n\n\n\n<li>amoniacal\u0103 \u2014 relativ mai stabil\u0103;<\/li>\n\n\n\n<li>amidic\u0103 \u2014 cea care trebuie s\u0103 se transforme sub ac\u021biunea ureazei.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">Tocmai forma amidic\u0103 din UAN creeaz\u0103 riscul pierderilor prin amoniac, mai ales dac\u0103 UAN este aplicat la suprafa\u021b\u0103, f\u0103r\u0103 suficient\u0103 umiditate, pe vreme cald\u0103 \u0219i v\u00e2ntoas\u0103. De aceea, fraza \u201eUAN-ul scump trebuie s\u0103 lucreze, nu s\u0103 se evapore\u201d nu este un slogan de marketing frumos, ci o logic\u0103 agronomic\u0103 real\u0103. <\/p>\n\n<p class=\"wp-block-paragraph\">Inhibitorul de ureaz\u0103 cre\u0219te eficien\u021ba utiliz\u0103rii UAN, deoarece ajut\u0103 la reducerea pierderilor de azot dup\u0103 aplicare. Acest lucru este deosebit de important \u00een fertilizarea gr\u00e2ului de toamn\u0103, rapi\u021bei, porumbului \u0219i a altor culturi, unde fiecare kilogram de azot influen\u021beaz\u0103 randamentul, proteina, biomasa, umplerea boabelor sau formarea tulpinilor productive. <\/p>\n\n<h2 class=\"wp-block-heading\">Secretul canadian nr. 4: stabilizarea azotului nu este o mod\u0103, ci economie<\/h2>\n\n<p class=\"wp-block-paragraph\">C\u00e2nd azotul era mai ieftin, o parte din pierderi era perceput\u0103 mai pu\u021bin dureros. Ast\u0103zi situa\u021bia este diferit\u0103. \u00cengr\u0103\u0219\u0103mintele sunt scumpe, logistica este scump\u0103, tehnologiile sunt scumpe, iar vremea este mai pu\u021bin previzibil\u0103. Prin urmare, a pierde azot \u00eenseamn\u0103 practic a pierde bani.   <\/p>\n\n<p class=\"wp-block-paragraph\">Inhibitorul de ureaz\u0103 nu este o cheltuial\u0103 \u201ede bifat\u201d. Este o modalitate de a proteja investi\u021bia \u00een nutri\u021bia cu azot. Dac\u0103 fermierul a aplicat UAN sau uree scumpe \u0219i apoi a prins 7\u201310 zile f\u0103r\u0103 ploaie, stabilizarea azotului poate deveni factorul care reduce pierderile \u0219i sus\u021bine eficien\u021ba fertiliz\u0103rii.  <\/p>\n\n<p class=\"wp-block-paragraph\">De aici logica simpl\u0103:<\/p>\n\n<p class=\"wp-block-paragraph\">controlul pierderilor = controlul profitului<\/p>\n\n<p class=\"wp-block-paragraph\">Nu fiecare c\u00e2mp necesit\u0103 aceea\u0219i solu\u021bie. Dar dac\u0103 condi\u021biile favorizeaz\u0103 evaporarea amoniacului, inhibitorul de ureaz\u0103 devine un instrument foarte practic. <\/p>\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"584\" data-src=\"https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2026\/06\/sekrety_zberezhennya_azotu_v_grunti_4-1024x584.jpg.webp\" alt=\"\" class=\"wp-image-7493 lazyload\" data-srcset=\"https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2026\/06\/sekrety_zberezhennya_azotu_v_grunti_4-1024x584.jpg.webp 1024w, https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2026\/06\/sekrety_zberezhennya_azotu_v_grunti_4-300x171.jpg.webp 300w, https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2026\/06\/sekrety_zberezhennya_azotu_v_grunti_4-768x438.jpg.webp 768w, https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2026\/06\/sekrety_zberezhennya_azotu_v_grunti_4-1536x877.jpg.webp 1536w, https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2026\/06\/sekrety_zberezhennya_azotu_v_grunti_4.jpg.webp 1861w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/584;\" \/><\/figure>\n\n<h2 class=\"wp-block-heading\">U-Guard: asigurare natural\u0103 pentru UAN \u0219i uree<\/h2>\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/adleragrovision.com.ua\/product\/ingibitor-ureazi-u-guard\">U-Guard<\/a> \u2014 inhibitor de ureaz\u0103 pe baz\u0103 de NBPT, care blocheaz\u0103 activitatea enzimei ureaza \u00een sol \u0219i \u00eencetine\u0219te trecerea azotului amidic \u00een form\u0103 amoniacal\u0103. Datorit\u0103 acestui fapt, se reduce riscul de pierderi de azot sub form\u0103 de amoniac dup\u0103 aplicarea UAN sau ureei. <\/p>\n\n<p class=\"wp-block-paragraph\">Avantajele sale trebuie formulate simplu \u0219i agonomic:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>U-Guard reduce pierderile de azot dup\u0103 aplicare;<\/li>\n\n\n\n<li>ajut\u0103 la p\u0103strarea mai mult azot \u00een sol;<\/li>\n\n\n\n<li>asigur\u0103 dac\u0103 dup\u0103 aplicare nu este ploaie;<\/li>\n\n\n\n<li>cre\u0219te eficien\u021ba UAN \u0219i ureei scumpe;<\/li>\n\n\n\n<li>extinde fereastra de utilizare a azotului de c\u0103tre cultur\u0103;<\/li>\n\n\n\n<li>ajut\u0103 la stabilizarea formei amidice de azot;<\/li>\n\n\n\n<li>nu adaug\u0103 stres suplimentar tehnologiei;<\/li>\n\n\n\n<li>este o asigurare simpl\u0103 pentru investi\u021biile \u00een \u00eengr\u0103\u0219\u0103minte.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">Important: U-Guard nu \u00eenlocuie\u0219te aplicarea competent\u0103. Dac\u0103 exist\u0103 posibilitatea de a aplica \u00eengr\u0103\u0219\u0103m\u00e2ntul \u00eenainte de o ploaie sigur\u0103, de a \u00eencorpora ureea \u00een sol sau de a lucra \u00een condi\u021bii optime \u2014 este \u00eentotdeauna bine. Dar c\u00e2nd condi\u021biile nu sunt ideale, inhibitorul de ureaz\u0103 ajut\u0103 la realizarea unei tehnologii mai sigure.  <\/p>\n\n<h2 class=\"wp-block-heading\">Cum func\u021bioneaz\u0103 inhibitorul de ureaz\u0103 cu UAN<\/h2>\n\n<p class=\"wp-block-paragraph\">UAN este un \u00eengr\u0103\u0219\u0103m\u00e2nt azotat lichid convenabil, care este u\u0219or de utilizat \u00een fertilizare. Dar eficien\u021ba lui depinde de cum \u0219i c\u00e2nd este aplicat. Dac\u0103 UAN este aplicat pe suprafa\u021b\u0103, iar dup\u0103 aplicare nu este ploaie, partea amidic\u0103 de azot \u00eencepe treptat s\u0103 se transforme sub ac\u021biunea ureazei. \u00cen aceast\u0103 etap\u0103 sunt posibile pierderi de amoniac.   <\/p>\n\n<p class=\"wp-block-paragraph\">Inhibitorul de ureaz\u0103 \u00eencetine\u0219te acest proces. El nu permite azotului amidic s\u0103 treac\u0103 prea rapid \u00een form\u0103 amoniacal\u0103 pe suprafa\u021b\u0103, unde riscul de pierderi este mai mare. Datorit\u0103 acestui fapt, UAN r\u0103m\u00e2ne mai mult timp \u00eentr-o stare mai stabil\u0103, iar cultura prime\u0219te mai multe \u0219anse de a utiliza azotul aplicat.  <\/p>\n\n<p class=\"wp-block-paragraph\">Pentru exploata\u021bie, acest lucru \u00eenseamn\u0103:<\/p>\n\n<p class=\"wp-block-paragraph\">UAN trebuie s\u0103 lucreze pe c\u00e2mp, nu s\u0103 se piard\u0103 \u00een aer.<\/p>\n\n<h2 class=\"wp-block-heading\">Cum func\u021bioneaz\u0103 inhibitorul de ureaz\u0103 cu ureea<\/h2>\n\n<p class=\"wp-block-paragraph\">Ureea este un \u00eengr\u0103\u0219\u0103m\u00e2nt azotat foarte concentrat. Este apreciat\u0103 pentru con\u021binutul ridicat de azot, comoditatea logisticii \u0219i posibilit\u0103\u021bile largi de aplicare. Dar tocmai ureea este foarte sensibil\u0103 la pierderi prin evaporarea amoniacului, dac\u0103 r\u0103m\u00e2ne pe suprafa\u021ba solului f\u0103r\u0103 \u00eencorporare sau ploaie.  <\/p>\n\n<p class=\"wp-block-paragraph\">C\u00e2nd granula de uree se dizolv\u0103, \u00eencepe procesul de hidroliz\u0103 a ureei. Ureaza accelereaz\u0103 acest proces, iar dac\u0103 condi\u021biile sunt favorabile evapor\u0103rii, o parte din azot se poate pierde. <\/p>\n\n<p class=\"wp-block-paragraph\">U-Guard \u00eencetine\u0219te activitatea ureazei, astfel \u00eenc\u00e2t trecerea azotului are loc mai controlat. Acest lucru ofer\u0103 fermierului mai mult timp pentru ca ploaia sau umiditatea s\u0103 mute azotul \u00een sol, unde va fi mai bine re\u021binut \u0219i utilizat treptat de cultur\u0103. <\/p>\n\n<p class=\"wp-block-paragraph\">Pe scurt:<\/p>\n\n<p class=\"wp-block-paragraph\">P\u0103streaz\u0103 azotul \u2014 ob\u021bine recolta.<\/p>\n\n<h2 class=\"wp-block-heading\">C\u00e2nd inhibitorul de ureaz\u0103 este deosebit de potrivit<\/h2>\n\n<p class=\"wp-block-paragraph\">Inhibitorul de ureaz\u0103 merit\u0103 luat \u00een considerare \u00een primul r\u00e2nd atunci c\u00e2nd riscul de pierderi de azot este ridicat. Cele mai practice situa\u021bii: <\/p>\n\n<ul class=\"wp-block-list\">\n<li>aplicarea UAN f\u0103r\u0103 ploaie garantat\u0103;<\/li>\n\n\n\n<li>aplicarea ureei pe suprafa\u021b\u0103;<\/li>\n\n\n\n<li>fertilizarea gr\u00e2ului de toamn\u0103 prim\u0103vara;<\/li>\n\n\n\n<li>fertilizarea rapi\u021bei;<\/li>\n\n\n\n<li>aplicarea azotului pentru porumb;<\/li>\n\n\n\n<li>lucrul pe miri\u0219te sau resturi vegetale;<\/li>\n\n\n\n<li>suprafa\u021ba uscat\u0103 a solului;<\/li>\n\n\n\n<li>vreme cald\u0103 \u0219i v\u00e2ntoas\u0103;<\/li>\n\n\n\n<li>azot scump \u0219i norme mari de aplicare;<\/li>\n\n\n\n<li>nevoia de a extinde disponibilitatea azotului pentru cultur\u0103;<\/li>\n\n\n\n<li>imposibilitatea de a \u00eencorpora rapid \u00eengr\u0103\u0219\u0103m\u00e2ntul \u00een sol.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">\u00cen astfel de condi\u021bii, inhibitorul de ureaz\u0103 func\u021bioneaz\u0103 ca o asigurare agronomic\u0103: nu face minuni, dar ajut\u0103 la p\u0103strarea a ceea ce a fost deja aplicat.<\/p>\n\n<h2 class=\"wp-block-heading\">C\u00e2nd inhibitorul de ureaz\u0103 poate fi mai pu\u021bin necesar<\/h2>\n\n<p class=\"wp-block-paragraph\">Pentru ca articolul s\u0103 fie echilibrat, este important s\u0103 spunem sincer: inhibitorul de ureaz\u0103 nu d\u0103 \u00eentotdeauna un efect la fel de vizibil. Dac\u0103 \u00eengr\u0103\u0219\u0103m\u00e2ntul este \u00eencorporat rapid \u00een sol, dac\u0103 dup\u0103 aplicare a c\u0103zut o ploaie suficient\u0103, dac\u0103 temperatura este sc\u0103zut\u0103, iar riscul de evaporare este minim, efectul economic poate fi mai mic. <\/p>\n\n<p class=\"wp-block-paragraph\">De aceea, logica corect\u0103 este urm\u0103toarea: s\u0103 nu aplica\u021bi inhibitorul \u201e\u00een orb\u201d, ci s\u0103 evalua\u021bi riscul.<\/p>\n\n<p class=\"wp-block-paragraph\">Pune-\u021bi c\u00e2teva \u00eentreb\u0103ri:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Va ploua \u00een zilele urm\u0103toare?<\/li>\n\n\n\n<li>Este azotul aplicat superficial?<\/li>\n\n\n\n<li>Exist\u0103 pe c\u00e2mp miri\u0219te sau resturi vegetale?<\/li>\n\n\n\n<li>Este solul cald?<\/li>\n\n\n\n<li>Se a\u0219teapt\u0103 v\u00e2nt \u0219i soare?<\/li>\n\n\n\n<li>Este norma de UAN sau uree mare?<\/li>\n\n\n\n<li>Cost\u0103 scump gre\u0219eala?<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">Dac\u0103 majoritatea r\u0103spunsurilor sunt \u201eda\u201d, inhibitorul de ureaz\u0103 devine o solu\u021bie foarte logic\u0103.<\/p>\n\n<h2 class=\"wp-block-heading\">Normele de aplicare U-Guard<\/h2>\n\n<p class=\"wp-block-paragraph\">Normele de consum recomandate:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>1,2\u20131,4 l U-Guard la 1000 l UAN 28\u201332%;<\/li>\n\n\n\n<li>2,5\u20133,0 l U-Guard la 1 ton\u0103 de uree.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">Aceste norme ajut\u0103 la tratarea uniform\u0103 a \u00eengr\u0103\u0219\u0103m\u00e2ntului \u0219i la asigurarea ac\u021biunii inhibitorului de ureaz\u0103. Este important s\u0103 se respecte recomand\u0103rile privind amestecarea, uniformitatea acoperirii \u0219i tehnica de aplicare. Dac\u0103 preparatul este aplicat cu UAN, trebuie asigurat\u0103 amestecarea de calitate \u00een rezervor. Dac\u0103 se trateaz\u0103 ureea, este important s\u0103 se aplice uniform preparatul pe granul\u0103.   <\/p>\n<div class=\"banner banner--content\">\n    <div class=\"banner__inner\">\n                    <img decoding=\"async\" data-src=\"https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2024\/05\/banner-content.jpg.webp\"  class=\"banner__bg lazyload\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 780px; --smush-placeholder-aspect-ratio: 780\/222;\" \/>\n                <div class=\"banner__content\">\n            <div class=\"banner__text\">\n                <h4>Deveni\u021bi partener<\/h4>\n<h2>Credit agricol pentru agrobusiness<\/h2>            <\/div>\n                                                \t\t\t\t\t\t\t        <\/div>\n    <\/div>\n<\/div>\n<h2 class=\"wp-block-heading\">Scheme practice de utilizare<\/h2>\n\n<h3 class=\"wp-block-heading\">Schema 1. UAN pe gr\u00e2ul de toamn\u0103 prim\u0103vara <\/h3>\n\n<p class=\"wp-block-paragraph\">Fertilizarea de prim\u0103var\u0103 a gr\u00e2ului de toamn\u0103 se efectueaz\u0103 adesea \u00een condi\u021bii de vreme instabil\u0103. C\u00e2mpul poate fi \u00eenc\u0103 r\u0103coros, dar suprafa\u021ba se usuc\u0103 rapid. Prognoza ploii este instabil\u0103, tehnica lucreaz\u0103 pe o suprafa\u021b\u0103 mare \u0219i nu exist\u0103 garan\u021bia c\u0103 precipita\u021biile vor fi la timp.  <\/p>\n\n<p class=\"wp-block-paragraph\">\u00cen aceast\u0103 situa\u021bie, inhibitorul \u00een UAN ajut\u0103 la reducerea riscului de pierderi de azot. Acest lucru este deosebit de important dac\u0103 exploata\u021bia lucreaz\u0103 pentru un randament \u0219i o protein\u0103 ridicate, iar nutri\u021bia azotat\u0103 trebuie s\u0103 sus\u021bin\u0103 \u00eenfr\u0103\u021birea, ie\u0219irea \u00een tub, formarea spicului \u0219i umplerea boabelor. <\/p>\n\n<h3 class=\"wp-block-heading\">Schema 2. Uree pentru porumb <\/h3>\n\n<p class=\"wp-block-paragraph\">Porumbul are o cerere mare de azot, dar nu \u00eel utilizeaz\u0103 instantaneu. Dac\u0103 ureea este aplicat\u0103 superficial \u0219i nu exist\u0103 umiditate suficient\u0103, o parte din azot se poate pierde \u00eenainte ca cultura s\u0103 \u00eenceap\u0103 s\u0103-l consume activ. <\/p>\n\n<p class=\"wp-block-paragraph\">Inhibitorul ajut\u0103 la \u00eencetinirea transform\u0103rii formei amidice, la reducerea pierderilor de amoniac \u0219i la p\u0103strarea mai mult azot \u00een sistem. Acest lucru este important pe c\u00e2mpurile cu suprafa\u021b\u0103 uscat\u0103, miri\u0219te, temperatur\u0103 ridicat\u0103 sau precipita\u021bii instabile. <\/p>\n\n<h3 class=\"wp-block-heading\">Schema 3. UAN pe rapi\u021b\u0103 <\/h3>\n\n<p class=\"wp-block-paragraph\">Rapi\u021ba este o cultur\u0103 cu o nevoie mare de azot, \u00een special prim\u0103vara. Dac\u0103 fertilizarea cu UAN se efectueaz\u0103 \u00een condi\u021bii de risc de pierderi, inhibitorul de ureaz\u0103 poate fi un instrument util pentru stabilizarea azotului. <\/p>\n\n<p class=\"wp-block-paragraph\">Pentru rapi\u021b\u0103 este important nu doar s\u0103 se aplice o norm\u0103 suficient\u0103, ci \u0219i s\u0103 se asigure disponibilitatea treptat\u0103 a azotului \u00een fazele critice de cre\u0219tere. Inhibitorul ajut\u0103 la reducerea pierderilor \u0219i la sus\u021binerea eficien\u021bei nutri\u021biei azotate scumpe. <\/p>\n\n<h3 class=\"wp-block-heading\">Schema 4. UAN sau uree \u00een condi\u021bii de secet\u0103 <\/h3>\n\n<p class=\"wp-block-paragraph\">Seceta este unul dintre principalii factori de risc. C\u00e2nd solul este uscat, \u00eengr\u0103\u0219\u0103m\u00e2ntul r\u0103m\u00e2ne mai mult timp pe suprafa\u021b\u0103, iar procesele de transformare a azotului pot merge nu \u00een momentul \u00een care cultura este capabil\u0103 s\u0103-l utilizeze eficient. <\/p>\n\n<p class=\"wp-block-paragraph\">\u00cen astfel de condi\u021bii, inhibitorul de ureaz\u0103 nu este o \u201eop\u021biune suplimentar\u0103\u201d, ci un instrument de management al riscului. El ajut\u0103 la c\u00e2\u0219tigarea de timp \u0219i la p\u0103strarea unei cantit\u0103\u021bi mai mari de azot p\u00e2n\u0103 \u00een momentul \u00een care umiditatea activeaz\u0103 nutri\u021bia culturii. <\/p>\n\n<h1 class=\"wp-block-heading\">De ce inhibitorul de ureaz\u0103 nu d\u0103uneaz\u0103 microflorei solului<\/h1>\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"584\" data-src=\"https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2026\/06\/sekrety_zberezhennya_azotu_v_grunti_3-1024x584.jpg.webp\" alt=\"\" class=\"wp-image-7491 lazyload\" data-srcset=\"https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2026\/06\/sekrety_zberezhennya_azotu_v_grunti_3-1024x584.jpg.webp 1024w, https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2026\/06\/sekrety_zberezhennya_azotu_v_grunti_3-300x171.jpg.webp 300w, https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2026\/06\/sekrety_zberezhennya_azotu_v_grunti_3-768x438.jpg.webp 768w, https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2026\/06\/sekrety_zberezhennya_azotu_v_grunti_3-1536x877.jpg.webp 1536w, https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2026\/06\/sekrety_zberezhennya_azotu_v_grunti_3.jpg.webp 1861w\" data-sizes=\"(max-width: 1024px) 100vw, 1024px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1024px; --smush-placeholder-aspect-ratio: 1024\/584;\" \/><\/figure>\n\n<p class=\"wp-block-paragraph\">Un aspect important: inhibitorii de ureaz\u0103 nu sterilizeaz\u0103 solul \u0219i nu \u201eucid\u201d microflora. Sarcina inhibitorilor este s\u0103 \u00eencetineasc\u0103 temporar activitatea enzimei ureaz\u0103, pentru a reduce viteza de transformare a azotului amidic. Dup\u0103 \u00eencheierea perioadei de ac\u021biune, procesele ciclului azotului continu\u0103 pe cale natural\u0103.  <\/p>\n\n<p class=\"wp-block-paragraph\">Acest lucru este important pentru exploata\u021biile care lucreaz\u0103 cu s\u0103n\u0103tatea solului, prelucrarea minim\u0103, culturile de acoperire sau materia organic\u0103. Inhibitorul de ureaz\u0103 nu este un \u00eenlocuitor al solului viu, ci un instrument de gestionare mai precis\u0103 a nutri\u021biei azotate. <\/p>\n\n<h2 class=\"wp-block-heading\">Economia subiectului: de ce \u201emai pu\u021bine pierderi\u201d \u00eenseamn\u0103 \u201emai mult rezultat\u201d<\/h2>\n\n<p class=\"wp-block-paragraph\">Fermierul nu cump\u0103r\u0103 pur \u0219i simplu o ton\u0103 de uree sau o mie de litri de UAN. El cump\u0103r\u0103 poten\u021bialul recoltei. Dac\u0103 o parte din azot se pierde, fermierul pl\u0103te\u0219te pentru ceea ce cultura nu a folosit. Prin urmare, este mai corect s\u0103 calcula\u021bi nu doar pre\u021bul \u00eengr\u0103\u0219\u0103m\u00e2ntului, ci \u0219i pre\u021bul pierderilor.   <\/p>\n\n<p class=\"wp-block-paragraph\">S\u0103 ne imagin\u0103m o situa\u021bie simpl\u0103: \u00eengr\u0103\u0219\u0103m\u00e2ntul a fost aplicat, dar nu plou\u0103. O parte din azot se pierde. Pentru a compensa acest lucru, fermierul va trebui fie s\u0103 accepte o eficien\u021b\u0103 mai sc\u0103zut\u0103 a nutri\u021biei, fie s\u0103 se g\u00e2ndeasc\u0103 la o aplicare suplimentar\u0103. Ambele variante cost\u0103 bani.   <\/p>\n\n<p class=\"wp-block-paragraph\">Inhibitorul de ureaz\u0103 ajut\u0103 la reducerea acestui risc. De aceea, mesajul \u201eprotejeaz\u0103-\u021bi cheltuielile pentru \u00eengr\u0103\u0219\u0103minte\u201d sun\u0103 absolut logic. Nu este o exagerare, ci esen\u021ba tehnologiei.  <\/p>\n\n<h2 class=\"wp-block-heading\">Mesaje scurte pentru fermier<\/h2>\n\n<ul class=\"wp-block-list\">\n<li>UAN trebuie s\u0103 lucreze, nu s\u0103 se evapore.<\/li>\n\n\n\n<li>P\u0103streaz\u0103 azotul \u2014 ob\u021bine recolta.<\/li>\n\n\n\n<li>Mai pu\u021bine pierderi \u2014 mai mult rezultat.<\/li>\n\n\n\n<li>Inhibitorii de ureaz\u0103 \u021bin azotul acolo unde este necesar.<\/li>\n\n\n\n<li>Controlul pierderilor = controlul profitului.<\/li>\n\n\n\n<li>UAN scump? P\u0103stra\u021bi fiecare kilogram de N. <\/li>\n\n\n\n<li>Nu plou\u0103 dup\u0103 aplicare? Inhibitorul de ureaz\u0103 v\u0103 asigur\u0103. <\/li>\n\n\n\n<li>Nu risca\u021bi \u2014 stabiliza\u021bi azotul.<\/li>\n\n\n\n<li>Lucra\u021bi inteligent cu UAN.<\/li>\n\n\n\n<li>Proteja\u021bi-v\u0103 cheltuielile pentru \u00eengr\u0103\u0219\u0103minte.<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">Gre\u0219eli tipice la lucrul cu azotul<\/h2>\n\n<h3 class=\"wp-block-heading\">Gre\u0219eala 1. A aplica ureea la suprafa\u021b\u0103 \u0219i pur \u0219i simplu a a\u0219tepta <\/h3>\n\n<p class=\"wp-block-paragraph\">Dac\u0103 dup\u0103 aplicare nu plou\u0103, ureea poate pierde azot prin evaporarea amoniacului. A a\u0219tepta nu este o strategie. Trebuie fie s\u0103 planifica\u021bi aplicarea sub o ploaie sigur\u0103, fie s\u0103 \u00eencorpora\u021bi \u00eengr\u0103\u0219\u0103m\u00e2ntul, fie s\u0103 utiliza\u021bi inhibitor de ureaz\u0103.  <\/p>\n\n<h3 class=\"wp-block-heading\">Gre\u0219eala 2. A crede c\u0103 UAN-ul nu are risc de pierderi <\/h3>\n\n<p class=\"wp-block-paragraph\">UAN-ul con\u021bine forma amidic\u0103 a azotului, prin urmare poate pierde, de asemenea, o parte din azot prin reac\u021bia ureazei. Riscul este mai mic sau mai mare \u00een func\u021bie de condi\u021bii, dar nu ar trebui s\u0103 \u00eel ignora\u021bi complet. <\/p>\n\n<h3 class=\"wp-block-heading\">Gre\u0219eala 3. A evalua doar norma de azot, nu \u0219i eficien\u021ba acestuia <\/h3>\n\n<p class=\"wp-block-paragraph\">Pute\u021bi aplica o norm\u0103 mare, dar s\u0103 o utiliza\u021bi ineficient. Este mult mai important \u2014 c\u00e2t azot va r\u0103m\u00e2ne efectiv disponibil culturii. <\/p>\n\n<h3 class=\"wp-block-heading\">Gre\u0219eala 4. A nu lua \u00een considerare vremea <\/h3>\n\n<p class=\"wp-block-paragraph\">Temperatura, v\u00e2ntul, umiditatea, soarele \u0219i ploaia dup\u0103 aplicare determin\u0103 c\u00e2t de rapid va trece azotul \u00eentre forme \u0219i c\u00e2t de mari vor fi pierderile.<\/p>\n\n<h3 class=\"wp-block-heading\">Gre\u0219eala 5. A nu calcula economia pierderilor <\/h3>\n\n<p class=\"wp-block-paragraph\">Dac\u0103 azotul este scump, pierderile chiar \u0219i a unei p\u0103r\u021bi din norma aplicat\u0103 pot fi semnificative. Inhibitorul de ureaz\u0103 nu este o cheltuial\u0103 de dragul cheltuielii, ci o modalitate de a proteja investi\u021biile deja f\u0103cute. <\/p>\n\n<h2 class=\"wp-block-heading\">Algoritm practic de p\u0103strare a azotului \u00een sol<\/h2>\n\n<ol class=\"wp-block-list\">\n<li>Evalua\u021bi sursa de azot: UAN sau uree.<\/li>\n\n\n\n<li>Determina\u021bi metoda de aplicare: superficial, \u00een benzi, cu \u00eencorporare sau f\u0103r\u0103.<\/li>\n\n\n\n<li>Verifica\u021bi prognoza de ploaie pentru urm\u0103toarele zile.<\/li>\n\n\n\n<li>Evalua\u021bi temperatura solului \u0219i a aerului.<\/li>\n\n\n\n<li>Lua\u021bi \u00een considerare v\u00e2ntul, soarele, usc\u0103ciunea suprafe\u021bei \u0219i resturile vegetale.<\/li>\n\n\n\n<li>Dac\u0103 riscul de pierderi este ridicat \u2014 aplica\u021bi inhibitor de ureaz\u0103.<\/li>\n\n\n\n<li>Pentru UAN utiliza\u021bi U-Guard \u00een norma de 1,2\u20131,4 l la 1000 l de UAN.<\/li>\n\n\n\n<li>Pentru uree utiliza\u021bi U-Guard \u00een norma de 2,5\u20133,0 l la 1 ton\u0103 de uree.<\/li>\n\n\n\n<li>Asigura\u021bi amestecarea uniform\u0103 sau acoperirea granulei.<\/li>\n\n\n\n<li>Dup\u0103 aplicare, evalua\u021bi starea culturii \u0219i eficien\u021ba nutri\u021biei.<\/li>\n<\/ol>\n<div class=\"banner banner--content\">\n    <div class=\"banner__inner\">\n                    <img decoding=\"async\" data-src=\"https:\/\/weagro.ua\/wp-content\/webp-express\/webp-images\/uploads\/2024\/05\/banner-content.jpg.webp\"  class=\"banner__bg lazyload\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 780px; --smush-placeholder-aspect-ratio: 780\/222;\" \/>\n                <div class=\"banner__content\">\n            <div class=\"banner__text\">\n                <h4>Cump\u0103ra\u021bi acum, pl\u0103ti\u021bi mai t\u00e2rziu<\/h4>\n<h2>Plata \u00een rate agricole pentru produc\u0103torul agricol<\/h2>            <\/div>\n                                                \t\t\t\t\t\t\t        <\/div>\n    <\/div>\n<\/div>\n<h2 class=\"wp-block-heading\">Concluzie: secretul fermierilor canadieni \u2014 s\u0103 nu pierzi ceea ce ai pl\u0103tit deja<\/h2>\n\n<p class=\"wp-block-paragraph\">Secretul p\u0103str\u0103rii azotului \u00een sol nu st\u0103 \u00eentr-o singur\u0103 tehnologie \u201emagic\u0103\u201d. El st\u0103 \u00eentr-o abordare sistemic\u0103: sursa corect\u0103 de azot, momentul corect al aplic\u0103rii, pozi\u021bionarea corect\u0103, aten\u021bia la vreme \u0219i utilizarea inhibitorului de ureaz\u0103 acolo unde exist\u0103 risc de pierderi. <\/p>\n\n<p class=\"wp-block-paragraph\">Fermierii canadieni g\u00e2ndesc de mult timp azotul nu doar ca o norm\u0103 de N pe hectar, ci ca o resurs\u0103 care trebuie protejat\u0103. Tocmai aceast\u0103 abordare ar trebui adoptat\u0103 de exploata\u021biile ucrainene: s\u0103 calculeze nu doar aplicarea, ci \u0219i eficien\u021ba utiliz\u0103rii. <\/p>\n\n<p class=\"wp-block-paragraph\">U-Guard \u00een acest sistem este o asigurare simpl\u0103 \u0219i logic\u0103 pentru UAN \u0219i uree. Acesta ajut\u0103 la reducerea pierderilor de azot dup\u0103 aplicare, ofer\u0103 p\u00e2n\u0103 la 7\u201310 zile de protec\u021bie f\u0103r\u0103 ploaie, p\u0103streaz\u0103 mai mult azot \u00een sol, nu \u00een aer, \u0219i cre\u0219te eficien\u021ba \u00eengr\u0103\u0219\u0103mintelor azotate scumpe. <\/p>\n\n<p class=\"wp-block-paragraph\">La <a href=\"https:\/\/adleragrovision.com.ua\/\">Adler Agro Vision<\/a> recomand\u0103m \u00eentotdeauna utilizarea inhibitorilor de ureaz\u0103 \u00eempreun\u0103 cu UAN sau uree, deoarece azotul este ast\u0103zi prea scump ca s\u0103-l pierdem prin volatilizare. Pe c\u00e2mp nu exist\u0103 \u00eentotdeauna condi\u021bii ideale: dup\u0103 aplicare poate s\u0103 nu plou\u0103, suprafa\u021ba solului se usuc\u0103 rapid, temperatura cre\u0219te, apare v\u00e2ntul \u2014 iar o parte din azotul amidic \u00eencepe s\u0103 se transforme \u00een amoniac \u0219i s\u0103 se piard\u0103 \u00een aer. Inhibitorul de ureaz\u0103 ajut\u0103 la \u00eencetinirea acestui proces, la reducerea pierderilor de azot dup\u0103 aplicare \u0219i la oferirea fermierului de timp suplimentar p\u00e2n\u0103 la precipita\u021bii. De aceea, pentru noi U-Guard nu este o \u201eop\u021biune suplimentar\u0103\u201d, ci o asigurare simpl\u0103 \u0219i logic\u0103 a investi\u021biilor \u00een \u00eengr\u0103\u0219\u0103minte: mai mult azot r\u0103m\u00e2ne \u00een sol, UAN \u0219i ureea lucreaz\u0103 mai eficient, iar ferma ob\u021bine un control mai bun asupra rezultatului.     <\/p>\n\n<p class=\"wp-block-paragraph\">Azotul este scump. Nu \u00eel pute\u021bi pierde. <\/p>","protected":false},"excerpt":{"rendered":"<p>Azotul este scump \u2014 nu putem s\u0103-l pierdem Azotul ast\u0103zi nu este doar un element nutritiv. Este una dintre cele mai scumpe investi\u021bii \u00een tehnologiile de cultivare a gr\u00e2ului, porumbului, rapi\u021bei, soiei, orzului, florii-soarelui \u0219i a altor culturi. Fiecare litru de UAN, fiecare ton\u0103 de uree \u0219i fiecare kilogram de substan\u021b\u0103 activ\u0103 trebuie s\u0103 lucreze [&hellip;]<\/p>","protected":false},"author":34,"featured_media":7582,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[88],"tags":[],"class_list":["post-7581","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-agribusiness"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Cum s\u0103 p\u0103strezi azotul \u00een sol: secretele fermierilor canadieni, UAN, uree \u0219i inhibitor de ureaz\u0103<\/title>\n<meta name=\"description\" content=\"Cum s\u0103 reduci pierderile de azot dup\u0103 aplicarea UAN \u0219i ureei. 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