Gwiritsani ntchito fungicides kuti muteteze nkhanambo musanafike nthawi yoyambira matenda

Kutentha kosalekeza ku Michigan pakali pano sikunachitikepo ndipo kudadabwitsa anthu ambiri potengera momwe maapulo amakulirakulira.Ndi mvula yomwe ikuyembekezeka Lachisanu, Marichi 23, komanso sabata yamawa,m'pofunika kuti mbeu za nkhanambo zitetezedwe ku matenda a nkhanambo..

Kumayambiriro kwa nyengo ya 2010 (yomwe inali isanayambikebe monga momwe tilili pano), mafangasi a nkhanambo anali kumbuyo pang'ono kwa mitengo ya maapulo yomwe ikukula chifukwa tinali ndi nthawi yayitali ya chipale chofewa mpaka nyengo isanakwane. overwintering masamba ozizira.Kusowa kwa chipale chofewa kuphimba "kasupe" wa 2012 komanso kusowa kwa kutentha kwenikweni m'nyengo yozizira kumasonyeza kuti nkhungu ya nkhanambo yakonzeka kupita tsopano.

Maapulo kumwera chakumadzulo kwa Michigan ali pagulu lolimba komanso pansonga yobiriwira ya 0.5-inch pa Ridge.Kuteteza mitengo munthawi imeneyi yomwe ikukula mwachangu ndi gawo lofunikira popewa mliri wa nkhanambo.Titha kukhala ndi spores wambiri pa nthawi yomwe ikubwerayi ya nkhanambo.Ngakhale kulibe kuchuluka kwa minofu yobiriwira yomwe ilipo, matenda a nkhanambo pansonga yobiriwira amatha kukhala ndi zovuta zachuma.Izi zili choncho chifukwa zilonda za nkhanambo zomwe zimayambika kuzungulira nsonga yobiriwira nthawi zambiri zimatulutsa conidia pakati pa pinki ndi kugwa kwa petal, nthawi yomwe ma ascospores oyambira amakhala ochulukirapo.Zidzakhala zovuta kwambiri kulamulira nkhanambo pansi pa kupanikizika kwakukulu kwa inoculum komanso ndi kukula kwa mtengo m'kupita kwa nthawi kumene kukula mofulumira kumabweretsa minofu yosatetezedwa pakati pa mankhwala ophera bowa.

Ma fungicides abwino kwambiri omwe amapezeka polimbana ndi nkhanambo panthawi ino ya nyengo yoyambilira ndi oteteza ma spectrum: Captan ndi EBDCs.Zikutheka kuti kwachedwa kwambiri mkuwa (onani nkhani yapitayi, "Kugwiritsa ntchito mkuwa woyambira nyengo yoyambirira kumathandizira kupewa 'zovuta' za matenda”).Komanso, kumatentha kwambiri kwa anilinopyrimidines (Scala ndi Vangard) omwe amagwira ntchito bwino pa kutentha kozizira (kutsika kwa 60s ndi pansi).Kusakaniza kwa thanki kwa Captan (3 lbs/A Captan 50W) ndi EBDC (3 lbs) ndi njira yabwino yothanirana ndi nkhanambo.Kuphatikiza uku kumagwiritsa ntchito mphamvu ya zida zonse ziwiri komanso kusungidwa kwapamwamba ndikugawanso ma EBDC.Nthawi zopopera zimayenera kukhala zothina kuposa nthawi zonse chifukwa cha kukula kwatsopano.Komanso, samalani ndi Captan, monga kugwiritsa ntchito Captan ndi mafuta kapena feteleza wina wa foliar kungayambitse phytotoxicity.

Tikumva zodetsa nkhawa zambiri (zotsimikizika) zokhudzana ndi chiyembekezo cha mbewu mu 2012. Sitingathe kulosera zanyengo, koma kuwongolera nkhanambo msanga ndikofunikira.Ngati tilola nkhanambo kuti igwire msanga, ndipo titakolola, bowa amadzakolola pambuyo pake.Mkhosa ndi chinthu chimodzi chomwe tingathe kuwongolera munyengo yoyambilira - tiyeni tichite!