نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشیار بخش تحقیقات علوم زراعی و باغی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان آذربایجان شرقی، سازمان تحقیقات، آموزش
2 دانشیار بخش تحقیقات بیماری های گیاهان، موسسه تحقیقات گیاه پزشکی کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The current research aimed to study the effect of delaying the fall planting date of rapeseed in cold climates using Trichoderma fungi. An experiment was conducted as a split plot based on an RCBD design with three replications using the Ahmadi cultivar in the East Azarbaijan Agriculture and Natural Resources Research and Education Center for two years (2021-23). The main factor was planting date including apropos (11 and 21 September) and late cultivation (1 and 11 October), and the sub-factor was Trichoderma fungi (Trichoderma harzianum) treatment including control, seed, and soil treatments. Delaying the planting date from 11 September to 11 October by increasing 20.7 percent in cold damage led to a decrease in seed and oil yields by 1425 and 676 Kg ha-1, respectively. The soil and seed treatment with fungi significantly increased plant growth rate and chlorophyll and decreased cold damage during winter from 35.2 in control (unused fungi) to 28.7 and 21.3 percent in soil and seed treatment respectively. Also, seed and oil yields increased. These effects were higher in seed treatment and seed yield increased by 27 and 27.6 percent on the 11 September and 11 December planting dates respectively, to soil treatment by fungi. According to the results, using Trichoderma fungi as a seed treatment on 11 October late cultivation date, increased seed yield from 2703.3 to 4128.6 Kg ha-1. The mentioned fungi by increasing fall growth and decreasing cold damage in rapeseed, caused a prevent of significant decrease in seed yield at late cultivations.
کلیدواژه‌ها [English]
)