Red rot ne mai muhimmanci ajiya cuta dankali.Ana haifar da shi ta hanyar ƙwayoyin cuta na phytophthora, Phytophthora, kuma ana samunsa a wuraren da ake noman dankalin turawa a duniya.
Wannan ƙwayar cuta tana haifuwa a cikin ƙasa mai cike da ƙima, don haka cutar yawanci tana haɗuwa da ƙananan filayen kwance ko wuraren da ba su da kyau.Yawan cutar ya fi girma a yanayin zafi tsakanin 70°F da 85°F.
Wataƙila ba za ku lura da ɓacin ruwan hoda ba kafin girbi ko ajiyar tuber, amma yana farawa a cikin filin.Cututtuka yawanci sun samo asali ne daga abin da aka makala ƙafa, amma kuma suna iya faruwa a cikin idanu ko raunuka.Rubewar ruwan hoda kuma na iya yaduwa daga tubers zuwa tubers yayin ajiya.
Kamar ƙwayoyin cuta na marigayi blight (Phytophthora infestans) da leakage (Pythium kisa), ruwan hoda rotting pathogen ne naman gwari-kamar oomycete, ba "ainihin" naman gwari.
Me ya sa za mu damu?Saboda sarrafa sinadarai na cututtukan fungal gabaɗaya baya amfani da oomycetes.Wannan yana iyakance zaɓuɓɓukan sarrafa sinadarai.
Mafi yawan amfani da oomycete fungicides don maganin robobin ruwan hoda sune mefenfloxacin (kamar Ridomil Gold daga Syngenta, Ultra Flourish daga Nuffam) da metalaxyl (kamar MetaStar na LG Life Sciences).Metalaxyl kuma an san shi da metalaxyl-M, wanda ke da kama da metalaxyl.
Alamar phosphoric acid tana nuna lokuta da hanyoyin aikace-aikace daban-daban.A cikin Pacific Northwest, muna bada shawarar aikace-aikacen ganye uku zuwa hudu, farawa da girman tuber da girman kusurwa.
Hakanan za'a iya amfani da acid phosphoric azaman magani bayan girbi bayan tubers sun shiga ajiya.Sauran magungunan kashe qwari da ake amfani da su don sarrafa robobin ruwan hoda sune fentrazone (misali, Ranman daga Summit Agro), oxatipyrine (misali, Orondis daga Syngenta), da flufentrazone (misali, Valent USA Presidio).
Karanta alamar samfurin a hankali kuma tuntuɓi masana na gida game da mafi kyawun farashi da jadawalin a yankinku.
Abin takaici, wasu Rhodopseudomonas suna jure wa metalaxyl.An tabbatar da juriyar shan muggan kwayoyi a yankunan da ake noman dankalin turawa a Amurka da Kanada.Wannan yana nufin cewa wasu masu noman na iya buƙatar yin la'akari da wasu hanyoyin don sarrafa ruɓar ruwan hoda, kamar aikace-aikacen phosphoric acid.
Ta yaya za ku san idan akwai keɓancewar ruwan hoda mai jure wa metalaxyl a gonar ku?Ƙaddamar da samfurin tuber zuwa dakin gwaje-gwaje na bincike na tsire-tsire kuma a tambaye su don yin gwajin ji na metalaxyl - tuber ya kamata ya nuna alamun rot.
An yi nazari kan wasu wurare don tantance yawan ruɓar ruwan hoda mai jure wa magani.Za mu gudanar da bincike a wannan shekara a Washington, Oregon da Idaho.
Muna rokon masu noma a yankin Arewa maso Yamma na Pacific da su nemo alamun rubewar ruwan hoda lokacin girbi ko duba wurin ajiya, kuma idan an same su, a aiko mana da shi.Wannan sabis ɗin kyauta ne, saboda ana biyan kuɗin gwajin ne daga tallafi daga Ƙungiyar Binciken Dankali ta Arewa maso Yamma.
Carrie Huffman Wohleb mataimakiyar farfesa ce/kwararre a yanki a fannin dankalin turawa, kayan lambu da iri a Jami'ar Jihar Washington.Duba duk labarun marubuci anan.