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 kuseri kwa mitengo ya maapulo chifukwa tinali ndi nthawi yotalikirapo ya chipale chofewa chomwe chinapangitsa kuti nyengoyi ikhale yozizira kwambiri. 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.

Mankhwala ophera fungal abwino kwambiri opezeka polimbana ndi nkhanambo panthawi ino ya nyengo yoyambilira ndi oteteza ma spectrum: Captan ndi EBDCs. Mwina kwachedwa kwambiri kuti mupeze 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 bwino ntchito kuzizira kozizira (kutsika kochepera 60s ndi pansi) Kusakaniza kwa tanka (3 lbs/A Captan 50W) ndi EBDC (3 lbs) ndi njira yabwino kwambiri yowongolera nkhanambo. Kugawikananso kwa EBDCs Kupopera nthawi kumafunika kukhala kolimba kuposa nthawi zonse chifukwa cha kukula kwatsopano, samalani ndi Captan, monga kugwiritsa ntchito Captan ndi mafuta kapena feteleza wina wa masamba 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!