Gwiritsani ntchito fungicides kuti muteteze ku matenda a apulo musanayambe nthawi yoyembekezera.

Kutentha komwe kukuchitika ku Michigan pakadali pano sikunachitikepo ndipo kwadabwitsa anthu ambiri pankhani ya momwe maapulo akukulira mofulumira. Mvula ikuyembekezeredwa Lachisanu, pa 23 Marichi, komanso sabata yamawa,Ndikofunikira kwambiri kuti mitundu ya zomera zomwe zimakhudzidwa ndi nkhanambo zitetezedwe ku matenda oyamba a nkhanambo.

Kumayambiriro kwa chaka cha 2010 (chomwe sichinali chakale ngati momwe tilili panopa), bowa wa scab anali atatsala pang'ono kupangidwa chifukwa tinali ndi nthawi yayitali yophimba chipale chofewa yomwe inapangitsa kuti bowa likhalepo m'masamba a nthawi yozizira kwambiri. Kusowa kwa chipale chofewa mu "kasupe" uno wa 2012 komanso kusowa kwa kutentha kwenikweni m'nyengo yozizira kukusonyeza kuti bowa wa scab wakonzeka kutha tsopano.

Maapulo kum'mwera chakumadzulo kwa Michigan ali pafupi kwambiri ndipo ali ndi nsonga yobiriwira ya mainchesi 0.5 pa Ridge. Kuteteza mitengo panthawiyi yakukula mofulumira kwambiri ndi gawo loyamba lofunika kwambiri popewa mliri wa nkhanambo ya apulo. Mwina tidzakhala ndi spores yambiri kunja uko pa nthawi yoyamba yodwala nkhanambo. Ngakhale kuti palibe minofu yobiriwira yambiri, matenda a nkhanambo pa nsonga yobiriwira akhoza kukhala ndi zotsatirapo zoyipa zachuma. Izi zili choncho chifukwa zilonda za nkhanambo zomwe zimayamba kuzungulira nsonga yobiriwira nthawi zambiri zimapanga conidia pakati pa pinki ndi petal fall, nthawi yachikhalidwe yomwe ascospores yoyamba imakhala yambiri. Zidzakhala zovuta kwambiri kulamulira nkhanambo pansi pa kupanikizika kwakukulu kwa inoculum komanso ndi kukula kwa mtengo kumapeto kwa nthawi komwe kukula mwachangu kumabweretsa minofu yosatetezedwa pakati pa kugwiritsa ntchito fungicide.

Mankhwala abwino kwambiri ophera fungicide omwe alipo polimbana ndi nkhanambo nthawi ino yoyambirira ya nyengo ndi oteteza ku madera osiyanasiyana: Captan ndi EBDCs. Mwina mkuwa wachedwa kwambiri (onani nkhani yapitayi, “Kupaka mkuwa kumayambiriro kwa nyengo kungathandize kupewa 'kukhumudwa' ndi matenda"). Komanso, kutentha kwambiri kwa anilinopyrimidines (Scala ndi Vangard) omwe amagwira ntchito bwino kutentha kozizira (kwapamwamba kwambiri m'ma 60s otsika ndi pansi). Kusakaniza kwa Captan (3 lbs/A Captan 50W) ndi EBDC (3 lbs) ndi njira yabwino kwambiri yothanirana ndi nkhanambo. Kuphatikiza kumeneku kumagwiritsa ntchito bwino zinthu zonse ziwiri komanso kusunga bwino ndi kugawanso kwa EBDCs. Kupopera kuyenera kukhala kocheperako kuposa masiku onse chifukwa cha kuchuluka kwa zomera zatsopano. Komanso, samalani ndi Captan, chifukwa kugwiritsa ntchito Captan ndi mafuta kapena feteleza ena kungayambitse poizoni wa phytotoxicity.

Tikumva nkhawa zambiri (zotsimikizika) zokhudza chiyembekezo cha mbewu mu 2012. Sitingathe kuneneratu nyengo, koma kuwongolera nkhanambo msanga n'kofunika kwambiri. Ngati tilola nkhanambo kuyamba msanga, ndipo tikakhala ndi mbewu, bowa lidzatenga mbewu pambuyo pake. Nknambo ndi chinthu chimodzi chomwe tingathe kulamulira mu nyengo yoyambirira ino - tiyeni tichite!