Luhlobo luni lwesifo i-wheat mildew
Context:Isikhunta sikakolweni yisifo sikakolweni esithinta indlebe, futhi sibangelwa yizimbangela ezifanayo nalezo ezibangela ukubola, nakuba esikhathini esithuthuke kakhulu sonyaka. Uma lesi sifo siqala ngokushesha ngemva kokuvela kwezindlebe okokuqala, ithanga nalo liyathinteka, kodwa uma i-grain icishe yakheka noma isakhiwe ngokuphelele, ukulimala kwe-straw akubonakali kangako. Ukolweni ungase ukhunta lapho utshani busha ngokuphelele, kodwa akuvamile. Nokho, isikhutha esibi siyalinciphisa ukuvuthwa okunye kokusanhlamvu notshani futhi siholele ekufeni. Okuthile okufana nesikhunta yi-gum, okuthi, kuzo zonke izinkathi ezishisayo ezimanzi, inamathele endlebeni, futhi ngokuvamile ibangele umonakalo omkhulu. Zonke lezi zinkinga ezihlukene ngokuvamile zihambisana nezinambuzane, nokwanda okuncane kwemifino okuyizilokazane, abaningi abakubheka njengembangela yomonakalo. Nokho, ukuvela kwazo kungase kuthiwe kungenxa yesimo sesitshalo esigulayo; ngoba nomaphi lapho ukubola kwenzeka khona, kungaba ezintweni zezilwane noma zemifino, ukuba khona kwalezi zilokazane akusoze kwaphela.  Okunye ukuphazamiseka okuthinta ukolweni kubangelwa ukushisa ngokweqile, okwenza izitshalo zingondleki kahle, futhi zigule futhi zibe buthakathaka. Kulesimo sokuwohloka komzimba uhlobo oluthile lothuli luqoqeka eziqwini nasemaqabungeni, olukhulayo njengoba lesi sifo siqhubeka, kuze kube yilapho isitshalo sesigugile futhi sesikhathele kakhulu. Okuwukuphela kwekhambi kulokhu, futhi okungeke kube lula ukulisebenzisa ngesandla somuntu, ukunikezwa umswakama omningi, okuthi, uma utholakala ngaphambi kokuba ukusetshenziswa kube kude kakhulu, isivuno sizuzwe ngezinga elilingana nezinga lokudla okutholakalayo, kanye nesigaba lesifo esifinyelele kuso.  Abanye abantu baye batusa ukuba kusetshenziswe ukolweni owonakele noma osuswe isikhutha njengembewu. Nokho, lokhu kungase kube ingozi. Ukolweni omncane noma onesici uyamila futhi ukhiqize isitshalo, kodwa isitshalo singase sibe sezingeni eliphansi futhi singakwazi ukumelana nemimoya yasebusika.
Isikhunta sikakolweni yisifo sikakolweni esithinta indlebe, futhi sibangelwa yizimbangela ezifanayo nalezo ezibangela ukubola, nakuba esikhathini esithuthuke kakhulu sonyaka. Uma lesi sifo siqala ngokushesha ngemva kokuvela kwezindlebe okokuqala, ithanga nalo liyathinteka, kodwa uma i-grain icishe yakheka noma isakhiwe ngokuphelele, ukulimala kwe-straw akubonakali kangako. Ukolweni ungase ukhunta lapho utshani busha ngokuphelele, kodwa akuvamile. Nokho, isikhutha esibi siyalinciphisa ukuvuthwa okunye kokusanhlamvu notshani futhi siholele ekufeni. Okuthile okufana nesikhunta yi-gum, okuthi, kuzo zonke izinkathi ezishisayo ezimanzi, inamathele endlebeni, futhi ngokuvamile ibangele umonakalo omkhulu. Zonke lezi zinkinga ezihlukene ngokuvamile zihambisana nezinambuzane, nokwanda okuncane kwemifino okuyizilokazane, abaningi abakubheka njengembangela yomonakalo. Nokho, ukuvela kwazo kungabangelwa isimo esiyingozi sesitshalo; ngoba noma ngabe ukubola kwenzeka kuphi, kungaba ezintweni zezilwane noma zemifino, ukuba khona kwalezi zilokazane akusoze kwaphela.  Okunye ukuphazamiseka okuthinta ukolweni kubangelwa ukushisa ngokweqile, okwenza izitshalo zingondleki kahle, futhi zigule futhi zibe buthakathaka. Kulesimo sokuwohloka komzimba uhlobo oluthile lothuli luqoqeka eziqwini nasemaqabungeni, olukhulayo njengoba lesi sifo siqhubeka, kuze kube yilapho isitshalo sesigugile futhi sesikhathele kakhulu. Okuwukuphela kwekhambi kulokhu, futhi okungeke kube lula ukulisebenzisa ngesandla somuntu, ukunikezwa komswakama omningi, okuthi, uma utholakala ngaphambi kokuba ukusetshenziswa kube kude kakhulu, isivuno sizuzwe ngezinga elilingana nezinga lokudla okutholakalayo, kanye nesigaba lesifo esifinyelele kuso.  Abanye abantu baye batusa ukuba kusetshenziswe ukolweni owonakele noma osuswe isikhutha njengembewu. Nokho, lokhu kungase kube ingozi. Ukolweni omncane noma onesici uyamila futhi ukhiqize isitshalo, kodwa isitshalo singase sibe sezingeni eliphansi futhi singakwazi ukumelana nemimoya yasebusika.