Ososayensi eNyuvesi yasePurdue babheke abalimi ukuthi babambe iqhaza kumaphrojekthi amabili ahloselwe ukuthuthukisa izinga lokuvundiswa kanye nokuhlwanyela kwezilimo ezihlukahlukene. UDavid Cammarano, UProfesa Ohlangene Wezokulima, uzosebenzisa inzwa ekude kanye nesayensi yedatha ukukhulisa inzuzo yepulazi ngenkathi enciphisa ubungozi bemvelo.
Iphrojekthi yokuqala, iphrojekthi ehlanganyelwe phakathi kweNyuvesi yaseMinnesota kanye nePurdue, ifuna ukuthola abalimi base-Indiana naseMinnesota abazimisele ukuhlola uchungechunge lwezindlela zokufaka isicelo se-nitrogen. Ngaphambi kokutshala ummbila, bazocelwa ukuthi bafake imithamo ehlukahlukene ye-nitrogen emigqeni. Kamuva, abacwaningi bazothola izithombe zesathelayithi noma zasemoyeni zezinkambu futhi basebenzise le datha ukuze bathuthukise imiyalelo yesilinganiso esishintshayo sokuvundisa i-nitrogen.
Namuhla, amaphesenti angama-20 kuphela abalimi eMidwest abasebenzisa i-nitrogen emapulazini abo. Imininingwane izosiza u-Cammarano nozakwabo ukuthi banqume amazinga okufaka isicelo anikeza izinzuzo ezinkulu kakhulu zezolimo, ezomnotho nezemvelo ezimweni eziningi ezihlukahlukene zasemapulazini, okuvumela abalimi abaningi ukuba basebenzise amasu e-nitrogen ngokuzethemba.
"Imininingwane esiyiqoqayo izosisiza ukuthi sakhe izinhlelo zokusebenzisa i-nitrogen ezimeni ezithile nasezitshalweni ezithile," kusho uCammarano, osipiliyoni sakhe sihlanganisa ukumodela kwezitshalo, ukuzwa ukude nokulima ngokunemba. "Sisebenzisa amathuluzi okulima edijithali ukuletha inzuzo enkulu kubalimi kanye nemvelo."
Abacwaningi bafuna isamba sezinkambu eziyi-10 okungenani zamahektha angama-30 kuzo zonke izifunda ezihluka ngobungozi bazo bokungcoliswa kwamanzi angaphansi kwe-nitrate. Lezi kuzoba yizifunda zaseJasper, Cass, Miami, Carroll, Blackford, Henry, Hendrix, Shelby, DuBois, kanye neWonderburg e-Indiana.
Abalimi kufanele bafanelekele i-Environmental Quality Incentive Programme (EQUIP) futhi babe nomeluleki wezitshalo ozimisele ukubambisana nalo msebenzi. Okuncamelayo kunikezwa labo abanamabalazwe okufakwa kukamanyolo, amasimu, izivuno kanye nedatha yesampula yomhlabathi yeminyaka eyisishiyagalombili kuya kweyishumi edlule.
Abalimi ababamba iqhaza ocwaningweni bazothola u-$1000 kanye nesinxephezelo sanoma yikuphi ukulahleka kwezitshalo. Abaxhumanisi bezitshalo bazothola u-$300 insimu ngayinye.
Iphrojekthi yesibili yokusebenzisana eholwa yiNyuvesi yase-Illinois ifuna abalimi bakakotini, ummbila, usoya, nokolweni abavela e-Indiana, Arkansas, Idaho, Illinois, Louisiana, Texas, Michigan, Minnesota, Montana, Nebraska, North Dakota, Ohio, South Dakota, kanye neWashington ukuthuthukisa amasu kamanyolo.
Abacwaningi bazohlinzeka abalimi ngamathuluzi abangawasebenzisa ukwenza ukuhlola okuqondile, okusekelwe ebufakazini bemithelela yezomnotho neyemvelo ye-nitrogen, i-phosphorus kanye namasu okulawula izinga lembewu.
“Sibheke amathuba okuthi abalimi bathole okuningi ngamanani embewu nasekufakeni umanyolo,” kusho uCammarano. "Uma singathola indawo emaphakathi yokuthola isivuno esiphezulu ngenani elincane likamanyolo, ngeke sizuze ngokwezomnotho kuphela, kodwa nangokwezemvelo."