Bayan dogon lokacin ajiya, gwajin fungicides a cikin karas daga masana'anta BASF ya nuna cewa masu noman karas suna da zaɓi don iyakance asarar ajiyarsu. An dai gudanar da shari'ar a Flevoland a bara.
BASF da farko kwatanta nau'ikan fungicides, gami da samfuran sa Signum, Scala da Dagonis SC. An yi wannan a cikin jadawali mai jujjuyawa da kuma a cikin jadawali da yawa inda aka canza albarkatun kamar yadda ake yi. An gudanar da gwajin maganin kashe kwayoyin cuta tare da nau'in Nerac akan filaye masu amfani a cikin Dronten da Marknesse.
Masanin fasaha Kick van Saarloos ya bayyana sakamakon gwajin da aka yi a wannan makon. Don tallafawa labarinsa, ya tattara karas da aka ware tare da cututtukan fungal daga samfuran ajiya. Rashin gazawar abubuwan da aka jiyya bayan watanni biyar na ajiya sun bambanta sosai dangane da jadawalin jiyya da matsa lamba na cuta.
Babban matsa lamba
Gwajin BASF a cikin Dronten an gina shi a cikin 2020 akan makirci tare da matsananciyar mildew. A kan makircin aikin a Marknesse, foliage ɗin ya kamu da cutar ta hanyar wucin gadi yayin lokacin girma. A cikin duka gwaje-gwajen BASF idan aka kwatanta, a tsakanin sauran abubuwa, samfuran nata tare da daidaitaccen maganin fungicides.
An yi feshin magungunan kashe qwari guda hudu a duk abubuwan da aka yi wa magani. An fara sarrafa naman gwari a ƙarshen watan Yuli. Daga baya, an yi amfani da tazara na kusan makonni biyu da rabi a cikin jadawalin. An yi feshin na ƙarshe ne a tsakiyar watan Satumba.
Gwajin filin ya nuna cewa Signum da Dagonis SC da kuma Signum a hade tare da Scala suna da tasiri mai kyau akan duka mildew da alternaria. Van Saarloos ya nuna a kan zanen gado cewa an ƙaddara tasirin mildew na kashi 98 cikin ɗari ga Dagonis SC, don Signum da aka fesa da wani wakili mai jika wanda shine kashi 95 cikin ɗari.
Tasiri akan alternaria
A cikin yanayin kamuwa da cuta mai nauyi mai nauyi, tsarin tare da Signum sau biyu tare da wakili na wetting sau biyu Scala tare da wakilin jika don cimma ƙimar inganci na kashi 80. A cikin wannan binciken na BASF, daidaitaccen maganin kashe kwayoyin cuta ya kasance a sakamakon kashi 64.
"Kyakkyawan tasiri akan fungi kuma yana nunawa a cikin yawan amfanin gona na hectare a filin," in ji Van Saarloos. 'Idan aka kwatanta da wanda ba a kula da shi ba, muna ƙididdige ƙarin yawan amfanin ƙasa na kashi 22 na abubuwan da ke da Signum da Scala da abubuwan da ke da Dagonis SC da Scala. A cikin wannan gwaji, wannan kuma yana nufin za mu iya girbi karin karas ton 22 daga hecta ɗaya. '
Binciken da aka yi kwanan nan game da samfuran ajiya ya nuna cewa bayan watanni biyar kafin gwaji a Dronten, raguwar kashi ya bambanta daga kashi 9.8 zuwa kashi 22.7. Karas daga makircin gwaji a Marknesse sun fi karfi a ajiya. Anan mafi kyawun abu yana ƙididdige ƙimar gazawar ajiya na kashi 2.4 kuma ga abu mara kyau, BASF tana rikodin ƙimar gazawar kashi 6.3.
Mafi kyau fiye da daidaitattun fungicides
Van Saarloos: 'Mafi kyawun samfuran ajiya an bi da su tare da Signum da Scala. Abubuwan da ke tare da Dagonis SC suna da ɗan ƙara gazawa, amma har yanzu suna yin mafi kyau fiye da daidaitaccen maganin kashe ƙwayoyin cuta. A cewar kwararre na karas na BASF, tushen mold ya ƙunshi botrytis da sclerotinia.
Ya kammala cewa samfurori irin su Signum da Scala a cikin karas suna ba da kyakkyawan sakamako na sarrafawa. Bugu da ƙari, Van Saarloos yana ganin Dagonis SC a matsayin madadin mai kyau. Wannan fungicides yana da tasiri mai yawa akan cututtukan fungal a yawancin kayan lambu. Ƙarin fa'ida shine ƙarancin adadin kayan aiki wanda ake fesa kowace kadada. Wannan yana sa samfurin ya zama mai ban sha'awa, alal misali, noma bisa ga yanayin PlanetProof. '
A Brassicas, manyan cututtuka sune Alternaria, zobe spot da Botrytis. Juriya lamari ne na gaske don haka ana roƙon masu noma da su yi amfani da adadin fungicides tare da nau'ikan ayyuka daban-daban. Alamar alama (boscalid da pyraclostrobin) yana da matsayi mai ƙarfi a cikin wannan sashe (Brassicas da karas musamman) saboda ayyukansa mai fa'ida da yanayin aikin sa.