Mumakore achangopfuura, kubatwa kwerapeseed white rust kwave kwakanyanya, zvichikanganisa zvakanyanya kunaka kwembeu yechibharo.
Rapeseed white rust inogona kukanganisa nhengo dzese dziri pamusoro-pevhu mukati mekukura kwekubatwa chibharo, kunyanya kukuvadza mashizha nemadzinde. Kana mashizha atanga kutapukirwa, mavara madiki madiki akasvibira ane yellow halo anozoonekwa pamberi pemashizha, izvo zvishoma nezvishoma zvinoshanduka yero kuita maronda akatenderera. Pendi yakachena-yakafanana mavanga achaonekwa kumashure kwemashizha. Kana mavanga anoputika, hupfu huchena huchabuda. Muzviitiko zvakanyanya, chirwere Mashizha anoshanduka yero uye anodonha. Pamusoro pe pedicel ine utachiona yakazvimba uye yakakomberedzwa, ichitora chimiro che "pombi", uye nhengo yemaruva yakakuvadzwa. Mapeti akaremara, akawedzerwa, anoshanduka akasvibira uye akafanana neshizha, uye haasvavi kwenguva refu uye haana kusimba. Maronda ari pahunde mavanga machena akabvongodzwa, uye maronda acho akazvimba uye akakombama.
Pane nguva mbiri dzepamusoro kubva pakuputika kusvika pakutumbuka kwakazara. Chirwere ichi chinowanzoitika kazhinji pasi pekushisa kwakadzika uye kunyorova kwemamiriro ekunze. Chirwere ichi chinowanzoitika munzvimbo dzine nzvimbo dzakadzika, mvura isina mvura, ivhu rakawanda, kudiridza zvakanyanya, kusiyana kukuru kwekushisa pakati pemasikati neusiku, kuoma kwedova, uye kuisa fetereza yenitrogen yakawandisa.
Kudzivirira uye kurapwa kwechirwere ichi kunogona kutanga kubva pane zvinotevera. Kutanga, zvakakosha kusarudza marudzi asingarware. Mhando yemastard uye rapeseed inoshingirira zvakanyanya, ichiteverwa nemhando yekabichi. Mhando yekabichi inobatwa nezvirwere uye inogona kusarudzwa maererano nemamiriro emunharaunda; chechipiri, zvakakosha kutenderera nezvirimwa zveuswa kwegore 1 kusvika ku2 kana kutenderedza zvirimwa pakati pemafashamo nekusanaya kwemvura; chechitatu, zvakakosha kubvisa zvachose zvirwere. Mbeu, kana "mapombi" aonekwa, acheke nenguva uye apise zvakanyanya; chechina, isai feteraiza zvakanaka uye bvisai migero nekubvisa tsvina.
Munguva yekuputika kwembeu, Chlorothalonil75% WP 600 times liquid, kana Zineb65% WP 100-150g/667 square metres, kana Metalaxyl25% WP 50-75g/667 Square metres, pfapfaidza 40 kusvika 50 kilograms emvura 7 kamwe chete, kamwe chete. kusvika kumazuva gumi, pfapfaidza 2 kusvika ku3 nguva, iyo inogona kunyatso kudzivirira kuitika kwezvirwere.
Payakatanga maruva, unogona kumwaya Chlorothalonil75% WP 1000-1200 times fluid + Metalaxyl25% WP 500-600 times fluid, kana Metalaxyl 58% ·Mancozeb WP 500 times liquid , control 2 to 3 times achienderera mberi, neinterval of 7 kusvika 10 mazuva pakati penguva imwe neimwe, iyo ine yakanaka yekudzora maitiro pane chena ngura.
Nguva yekutumira: Mar-25-2024
