Iyo yakakwana nitrogen mitengo yemakerotsi muminda chaiyo inogona kunge iri shoma pane inogamuchirwa kazhinji kurudziro. Iyi ndiyo mhedziso yakaitwa nemasayendisiti kuYunivhesiti yeCalifornia zvichienderana nemhedzisiro yetsvagiridzo. Ruzivo urwu rwakakosha maererano nekukwira kwemitengo yemafetereza ezvicherwa pasi rose.
Vazhinji varimi vemakarotsi vanoisa fetereza yenitrogen yakawanda kupfuura inodiwa. Kunyangwe makaroti achida mamiriro ekukura akakosha uye huwandu hwakakwana hwemamineral nitrogen nemvura, iyo yakawandisa haibatsiri tsika. Makarotsi ane midzi yakadzika uye ine mapazi, saka vanokwanisa kuwana yakasara nitrogen yemwaka wapfuura, iyo yakapinda mukati mevhu.
Zvinodiwa nenitrogen pamakarotsi kuti pave negoho rakakwana remidzi inotsamira pamamiriro ekunze, rudzi rwevhu uye nenitrogen yakasara muvhu.
Goho rakadzikira rinogona kuwanzo onekwa kana madhasi makuru enitrogen fertilizer akaiswa panguva yekudyara, saka kushandiswa kwefotereza inononoka kuburitswa kunodiwa kubva pakugadzirwa uye maonero ezvakatipoteredza.
Kudiridza kwakanyanya kunokonzera kukanganisa kwakasiyana kwemidzi yekaroti, saka, zvinodikanwa kunyatso kudzora kudiridza panguva yekukura. Kunyange zvazvo fetereza yenitrogen isinganyanyi kuwedzera kudyiwa kwemvura yechirimwa nekuda kwekuwedzera kwenzvimbo yemashizha, inowedzera zvakanyanya kushandiswa kwemvura kusvika pakuisa 120 kg nitrogen pahekita.
Ongororo yakaitwa nenyanzvi dzesainzi dzekuAmerica yakaratidza kuti goho repamusoro-soro rembesa midzi rakawanikwa paivhu rejecha nerame nechikamu che75% chehunyoro hwevhu mumunda uye kuisa 150 kg yenitrogen pahekita.
Kutora nitrojeni mumakaroti kunowanzo kuderera mumazuva makumi mana kusvika makumi mashanu ekutanga, saka varimi vanorayirwa kuti vadzikise kubereka kwavo panguva iyi. Nepo kudiridza kazhinji kunokurudzirwa panguva imwe chete, zvinodikanwa kudzora huwandu hwemvura nekudiridza kwega kwega kudzikisa kudonha kwenitrogen yakasara. Mushure mezvose, mupiro wake unogona kuve wakakosha, kunyanya munzvimbo ye monoculture.
Migumisiro yeongororo yakaratidza kuti nitrogen yakawanda yakaramba iri pamusoro pemakaroti panguva yekukohwa, zvichiita kuti paunganidzwe avhareji ye42-44% yenitrogen yakazara muchirimwa (misoro nemidzi) mumwaka unotevera.
Zvinokurudzirwa kugara uchiita ongororo yekutanga yenitrogen yevhu kusvika pakadzika masendimita makumi matanhatu uye wozoverengera zvakare mitengo yekushandisa zvichienderana neruzivo urwu. Iyi tsika chishandiso chakanakisa chekuwedzera goho uye kuvandudza mhando nemutengo wakaderera wehupfumi uye kwezvakatipoteredza.