Ishishini lezolimo liyindawo apho izinto ezintsha zesayensi nezobuchwepheshe ziqala khona. Iifama zanamhlanje kunye neminye imisebenzi yezolimo yahluke kakhulu kwezo zangaphambili.
Iingcali kweli shishini zihlala zikulungele ukusebenzisa ubuchwepheshe obutsha ngezizathu ezahlukeneyo. Ubuchwepheshe bunokunceda ekwenzeni imisebenzi isebenze ngakumbi, nto leyo evumela abalimi ukuba benze okungakumbi ngexesha elincinci.
Njengoko inani labantu likhula, imveliso yokutya iyaqhubeka nokwanda, konke oku kuxhomekeke kwizichumiso zeekhemikhali.
Eyona njongo iphambili kukuba abalimi banciphise ubungakanani besichumiso abasisebenzisayo ngelixa bekhulisa isivuno.
Khumbula ukuba ezinye izityalo zifuna isichumiso esingakumbi, njengengqolowa.
Isichumisi yiyo nayiphi na into eyongezwa emhlabeni ukukhuthaza ukukhula kwezityalo kwaye ibe yinxalenye ebalulekileyo yemveliso yezolimo, ingakumbi xa kusenziwa ushishino. Kukho iintlobo ezininzi zezichumisi, kuquka izichumisi zeminerali, ze-organic neze-industrial. Uninzi lwazo luqulathe izondlo ezintathu ezibalulekileyo: i-nitrogen, i-phosphorus kunye ne-potassium.
Ngelishwa, ayizizo zonke iinitrogen ezifikelela kwizityalo ngokwazo. Enyanisweni, yi-50% kuphela yenitrogen ekwizichumisi esetyenziswa zizityalo ezikwimihlaba yokulima.
Ukulahleka kwe-nitrogen yingxaki yokusingqongileyo njengoko ingena emoyeni nakwimizimba yamanzi efana namachibi, imilambo, imilambo kunye neelwandle. Kubalulekile ukuqaphela ukuba kwezolimo zanamhlanje, izichumisi ze-nitrogen zihlala zisetyenziswa.
Ezinye iintsholongwane ezisemhlabeni zinokuguqula i-nitrogen ibe zezinye iigesi eziqulethe i-nitrogen ezibizwa ngokuba zii-greenhouse gases (GHGs). Ukwanda kwamanqanaba okukhutshwa kweegesi ezigcina ubushushu emoyeni kukhokelela ekufudumaleni kwehlabathi, kwaye ekugqibeleni, kutshintsho lwemozulu. Ukongeza, i-nitrous oxide (igesi egcina ubushushu) isebenza ngcono kune-carbon dioxide.
Zonke ezi zinto zinokuba nefuthe elibi kwindalo esingqongileyo. Izichumisi ezine-nitrogen zikrele elibukhali kabini: zibalulekile ekukhuleni kwezityalo, kodwa i-nitrogen egqithisileyo inokukhululwa emoyeni kwaye ibangele iziphumo ezininzi ezimbi kubomi babantu nakwizilwanyana.
Njengoko abathengi abaninzi besamkela indlela yokuphila eluhlaza, iinkampani kuzo zonke iimboni zijonge ukwamkela iindlela ezizinzileyo ukuze zibe nefuthe elihle kwindalo esingqongileyo.
Abalimi baya kukwazi ukunciphisa ubungakanani bezichumisi zeekhemikhali ezisetyenziswa kwimveliso yezityalo ngaphandle kokuchaphazela isivuno.
Abalimi banokuzilungisa iindlela zabo zokuchumisa ngokusekwe kwiimfuno ezithile zezityalo zabo kunye neziphumo abafuna ukuzifikelela.
Ixesha lokuthumela: Disemba-28-2023