E hoʻohana i nā fungicides no ka pale ʻana i ka scab apple ma mua o ka manawa mua i manaʻo ʻia

ʻAʻole i ʻike ʻia ka wela hoʻomau ma Michigan i kēia manawa a ua pīhoihoi nā mea he nui i ke ʻano o ka wikiwiki o ka ulu ʻana o nā ʻāpala.Me ka ua i wānana ʻia no ka Pōʻalima, Malaki 23, a no kēia pule aʻe.He mea koʻikoʻi ia e pale ʻia nā mea kanu i hiki i ka scab-susceptible cultivars mai kēia hanana mua i manaʻo ʻia..

I ke kau mua o ka makahiki 2010 (ʻaʻole naʻe e like me ka wā e hiki mai ana i kēia manawa), aia ma hope o nā kumulāʻau ʻāpala i ka ulu ʻana o ka scab fungus no ka mea ua lōʻihi ka manawa o ka uhi hau e alakaʻi ana i ke kau i mālama ʻia ai ka haʻo. lau hoʻoilo anu.ʻO ka nele o ka hau e uhi ana i kēia "punawai" o 2012 a me ka nele o nā mahana anu maoli i ka wā hoʻoilo e hōʻike ana ua mākaukau ka haʻi scab e hele i kēia manawa.

Aia nā ʻāpala ma ke komohana hema ʻo Michigan ma ka puʻupuʻu paʻa a ma ka piko ʻōmaʻomaʻo 0.5-inihi ma ka Ridge.ʻO ka pale ʻana i nā kumulāʻau i kēia wā o ka ulu wikiwiki ʻana he hana mua koʻikoʻi ia e pale aku ai i kahi maʻi maʻi ʻāpala.Loaʻa paha iā mākou ka haʻahaʻa spore kiʻekiʻe ma laila no kēia manawa maʻi scab mua e hiki mai ana.ʻOiai ʻaʻole nui ka ʻiʻo ʻōmaʻomaʻo i kēia manawa, hiki i nā maʻi scab ma ka piko ʻōmaʻomaʻo ke loaʻa i nā hopena waiwai koʻikoʻi.ʻO kēia no ka mea, ʻo nā ʻeha ʻōpala i hoʻomaka ʻia a puni ka piko ʻōmaʻomaʻo e hana maʻamau i ka conidia ma waena o ka ʻulaʻula a me ka hāʻule ʻana o ka petal, ʻo ka manawa kuʻuna i ka nui o nā ascospores mua.He mea paʻakikī loa ka hoʻomalu ʻana i ka scab ma lalo o ke kaomi inoculum kiʻekiʻe a me ka ulu ʻana o ka lāʻau i nā manawa hope kahi e ulu wikiwiki ai ka ʻiʻo i pale ʻole ʻia ma waena o nā noi fungicide.

ʻO nā fungicides maikaʻi loa i loaʻa no ka mālama ʻana i ka scab i kēia manawa o ke kau mua ʻo ia nā mea pale ākea ākea: Captan a me nā EBDC.Ua lohi paha no ke keleawe (e nānā i ka ʻatikala mua, "ʻO ka noi keleawe mua e kōkua i ka pale ʻana i ka 'blus' e pili ana i nā maʻi”).Eia kekahi, he wela loa ia no nā anilinopyrimidines (Scala a me Vangard) i ʻoi aku ka maikaʻi o ka maikaʻi ma nā mahana anuanu (nā kiʻekiʻe ma nā 60s haʻahaʻa a lalo).ʻO kahi pahu-hui o Captan (3 lbs/A Captan 50W) a me EBDC (3 lbs) kahi hui hoʻomalu scab maikaʻi loa.Hoʻohana kēia hui ʻana i ka pono o nā mea ʻelua a me ka paʻa ʻana a me ka hāʻawi hou ʻana o nā EBDC.Pono e ʻoi aku ka paʻa o nā wā pāpaʻi ma mua o ka mea maʻamau no ka nui o ka ulu hou.Eia kekahi, e makaʻala me Captan, no ka mea, hiki i ka hoʻohana ʻana iā Captan me nā aila a i ʻole kekahi mau mea kanu foliar hiki ke alakaʻi i ka phytotoxicity.

Ke lohe nei mākou i ka hopohopo nui e pili ana i ka manaʻo o ka huaʻai no 2012. ʻAʻole hiki iā mākou ke wānana i ke aniau, akā he mea koʻikoʻi ka hoʻomalu ʻana i ka scab.Inā ʻae mākou e paʻa koke ka pehu, a loaʻa iā mākou kahi ʻai, e loaʻa ka ʻuala i ka hua ma hope.ʻO Scab kekahi kumu hiki iā mākou ke hoʻomalu i kēia kau mua - e hana kāua!