Сontrol of brown leaf spot for environmentally safe protection of grain sorghum in Ukraine
نویسندگان
چکیده
Purpose. The purpose of the research was to determine effectiveness complex application biological preparations in grain sorghum crops control brown spotting and their impact on crop yield level Ukraine. Methods. study protection for carried out during 2018–2022 by conducting surveys agrocenoses conditions educational field Polish National University PE "Chaykivka" Radomyshl district Zhytomyr region. Field laboratory methods were used conduct experiment. Results. causative agent is fungus Helminthosporium turcicum (Luttr.) K.J. Leonard & Suggs. During research, first spots leaves visible already decade June, development did not exceed 1.6%. disease reached its maximum 2022 29.5%. It possible achieve reduction as a result two-time spraying cenosis with preparations, which reduced 10.7% phase milky-waxy ripeness. Complex (two-time biopreparation Agat-25K, PA, 0.03 kg/ha plant growth regulator Endophyt EM-1, v.s.r., 0.010 l/ha at 30th stage development) provided value technical efficiency - 39.5%. productivity hybrid 419 x 124 realized environmentally safe sorghum: development, 6.24 t/ha. Conclusions. Due use protection, we solved urgent problem ecologically
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ژورنال
عنوان ژورنال: ????? ? ????????????????
سال: 2022
ISSN: ['0135-2377']
DOI: https://doi.org/10.31073/kormovyrobnytstvo202294-04