Dorewar zafi a Michigan a yanzu ba a taɓa yin irinsa ba kuma ya kama mutane da yawa mamaki dangane da yadda apple ke haɓaka cikin sauri.Tare da hasashen damina mai zuwa ranar Juma'a, 23 ga Maris, da kuma mako mai zuwa.Yana da mahimmanci cewa an kiyaye ciyayi masu saurin kamuwa da cutar daga wannan abin da ake tsammanin kamuwa da cutar scab..
A farkon kakar 2010 (wanda har yanzu bai kasance da wuri kamar yadda muke a yanzu ba), scab naman gwari ya kasance kadan a bayan bishiyoyin apple a cikin ci gaba saboda muna da tsawon lokaci na murfin dusar ƙanƙara wanda ya kai ga kakar da ke kiyaye naman gwari a ciki. overwintering ganye sanyi.Rashin dusar ƙanƙara ya rufe wannan "bazara" na 2012 da rashin ainihin yanayin sanyi a lokacin hunturu yana nuna cewa scab naman gwari yana shirye ya tafi yanzu.
Apples a kudu maso yammacin Michigan suna cikin gungu sosai kuma a kan 0.5-inch kore tip akan Ridge.Kare bishiyoyi a wannan lokacin na ci gaba mai ban mamaki shine muhimmin mataki na farko don hana cutar scab apple.Wataƙila za mu sami babban nauyin spore a can don wannan lokacin kamuwa da scab na farko mai zuwa.Ko da yake babu wani babban adadin kore nama ba, scab cututtuka a kore tip na iya samun tsanani tattalin arziki sakamakon.Wannan shi ne saboda scab raunuka da aka fara a kusa da kore tip yawanci zai haifar da conidia tsakanin ruwan hoda da petal fall, da al'ada lokaci lokacin da primary ascospores ne a cikin mafi yawan lambobi.Zai yi matukar wahala a sarrafa scab a ƙarƙashin irin wannan matsananciyar inoculum kuma tare da girma bishiyar a lokuta na gaba inda saurin girma ya haifar da ƙarin nama mara kariya tsakanin aikace-aikacen fungicides.
Mafi kyawun magungunan kashe qwari da ake da su don sarrafa scab a wannan lokacin farkon lokacin su ne manyan masu karewa: Captan da EBDCs.Wataƙila ya yi latti don jan ƙarfe (duba labarin da ya gabata, “Aikace-aikacen tagulla na farkon kakar zai taimaka wajen guje wa jin 'baƙin ciki' game da cututtuka”).Hakanan, yana da zafi sosai ga anilinopyrimidines (Scala da Vangard) waɗanda ke da inganci mafi inganci a yanayin sanyi mai sanyi (mafi girma a cikin ƙananan 60s da ƙasa).Haɗin tanki na Captan (3 lbs/A Captan 50W) da EBDC (3 lbs) kyakkyawan haɗin sarrafa scab ne.Wannan haɗin yana ɗaukar fa'idar ingancin kayan duka biyu da mafi girman riƙewa da sake rarraba EBDCs.Tazarar fesa yana buƙatar zama mai ƙarfi fiye da na al'ada saboda adadin sabon girma.Hakanan, a kula da Captan, saboda amfani da Captan tare da mai ko wasu takin foliar na iya haifar da phytotoxicity.
Muna jin damuwa da yawa (cikakken garantin) game da hasashen amfanin gona na 2012. Ba za mu iya hasashen yanayi ba, amma sarrafa scab da wuri yana da mahimmanci.Idan muka bari scab ya kama da wuri, kuma muna da amfanin gona, naman gwari zai sami amfanin gona daga baya.Scab shine abu ɗaya da za mu iya sarrafawa a farkon wannan lokacin - bari mu yi shi!
Lokacin aikawa: Maris-30-2021