Eminyakeni yakamuva, izigameko zokugqwala okumhlophe kwe-rapeseed beziphezulu kakhulu, okulimaza kakhulu ikhwalithi ye-rapeseed.
Ukugqwala okumhlophe kwe-rapeseed kungathinta zonke izitho ezingaphezulu komhlaba ngesikhathi sokukhula kokudlwengulwa, ikakhulukazi amaqabunga alimazayo neziqu. Lapho amaqabunga eqala ukungenwa igciwane, amachashaza amancane aluhlaza anokukhanya okuphuzi azovela ngaphambili kwamaqabunga, aphenduke kancane kancane abe izilonda eziyindilinga. Izibazi ezimhlophe ezifana nopende zizovela ngemuva kwamaqabunga. Lapho izibazi ziphuka, impushana emhlophe izophuma. Ezimweni ezimbi kakhulu, isifo Amaqabunga aphenduka aphuzi futhi awe. Ingaphezulu le-pedicel elinegciwane livuvukele futhi ligobile, lithatha isimo "sompompi", futhi isitho sembali sonakalisiwe. Amacembe akhubazekile, akhulisiwe, aphenduka abe luhlaza futhi afane namaqabunga, futhi awabuni isikhathi eside futhi awaqinile. Izilonda esiqwini ziyizibazi ezimhlophe ezi-oblong, futhi izilonda zivuvukele futhi zigobile.
Kunezikhathi ezimbili eziphakeme kakhulu ukusuka ekuqhakazeni kuya ekuqhakazeni okugcwele. Lesi sifo sivame ukwenzeka njalo ngaphansi kwezinga lokushisa eliphansi kanye nezimo zemvelo ezinomswakama ophezulu. Lesi sifo sivame kakhulu ezindaweni ezinendawo ephansi, amanzi angenalutho, inhlabathi enzima, ukuchelela ngokweqile, umehluko omkhulu wokushisa phakathi kwemini nobusuku, ukujiya kwamazolo amakhulu, kanye nokufakwa komanyolo we-nitrogen ngokweqile.
Ukuvimbela nokwelashwa kwalesi sifo kungaqala kulezi zici ezilandelayo. Okokuqala, kubalulekile ukukhetha izinhlobo ezimelana nezifo. I-mustard kanye ne-rapeseed imelana kakhulu, ilandelwa uhlobo lweklabishi. Uhlobo lweklabishi lungenwa izifo futhi lungakhethwa ngokuya ngezimo zendawo; okwesibili, kuyadingeka ukushintshanisa izitshalo zotshani unyaka owodwa kuya kwemibili noma ukushintshanisa izitshalo phakathi kwezikhukhula nesomiso; okwesithathu, kuyadingeka ukuqeda izifo ngokuqinile. Izithombo, lapho "ompompi" bevela, banqume ngesikhathi futhi bashise kakhulu; okwesine, vundisa kahle futhi uvule imisele futhi ukhiphe amabala.
Ngesikhathi sokuvuthwa kwembewu edlwenguliwe, i-Chlorothalonil75% WP 600 times liquid, noma i-Zineb65% WP 100-150g/667 square metres, noma i-Metalaxyl25% WP 50-75g/667 Square metres, fafaza amakhilogremu angama-40 kuye kwangama-50 njalo ngo-7 amakhilogremu amanzi ngokulinganayo, kanye ezinsukwini eziyi-10, fafaza izikhathi ezi-2 kuye kwezi-3, ezingavimbela ngempumelelo ukuvela kwezifo.
Ekuqaleni kokuqhakaza, ungafafaza i-Chlorothalonil75% WP 1000-1200 times liquid + Metalaxyl25% WP 500-600 times liquid, noma Metalaxyl 58% ·Mancozeb WP 500 times liquid , lawula izikhathi ezi-2 kuya kwezi-3 ngokuqhubekayo, ngesikhawu Izinsuku eziyi-7 kuye kweziyi-10 phakathi kwesikhathi ngasinye, okunomthelela omuhle wokulawula ekugqwaleni okumhlophe.
Isikhathi sokuthumela: Mar-25-2024
