Abstract
Field experiments were carried out on chestnut soils of Piedmont Dagestan in 2018-2020. Hybrids of grain corn treated with different growth stimulants were the object of еру research. The experiments showed that the harvesting ripeness of hybrids ROSS 299 MV and Mashuk 355 MV occurred 2...5 days earlier after treatment with growth stimulants compared to the control. The growth stimulants used in the experiment did not have a significant effect on seed germination rate. Among the studied hybrids, the highest seed germination were observed in Mashuk 355 MV hybrid. The highest values of leaf area and net productivity of crops were in hybrid Mashuk 355 MB. Plants treated with growth regulators had higher leaf surface by 4.4% and 5.5%; 6.0 % and 8.4%, respectively. Approximately the same dynamics was recorded for photosynthesis net productivity and accumulation of dry matter. Mashuk 355 MV hybrid showed the best yield, which was 30.5; 31.5 and 32.5% higher respectively, compared to the standard. Productivity of corn hybrids treated with growth regulators increased significantly. The highest data were observed on plants treated with Megamiks N10 growth regulator, which were higher than the control data by 30.0 and 32.5%, respectively. Aminokat 30% growth regulator increased corn productivity by 23.7 and 24.7%, respectively. Sufficiently high indicators of yield structure were 10 recorded in Mashuk 355 MV hybrid in the variant with the Megamiks N10 growth stimulator.
Highlights
For citation: Khashdakhilova SM, Musaev MR, Khalilov MB, Magomedova AA
Effect of growth stimulants on yield and quality of grain corn grown in Piedmont sub-province of Dagestan
Гасанов Г.Н., Гасанбеков Г.Р., Абдурахманов Ю.З., Шахбазов Г.Н
Summary
Полевые исследования были проведены в 2018—2020 гг. в двухфакторном полевом опыте по следующей схеме. Фактор А — гибриды: изучалась сравнительная продуктивность следующих гибридов кукурузы на зерно: РОСС 299 MB (стандарт), Машук 355 МВ. Фактор В — стимуляторы роста: 1 — без обработки (контроль); 2 — Аминокат 30%; 3 — Мегамикс N10. Посевы кукурузы в фазе 5-6 листьев были обработаны стимуляторами роста Аминокат 30% и Мегамикс N10, дозой 0,5 л/га. Величина перегноя в гумусовом горизонте этих почв колеблется от 2 до 3,5 %, а запасы гумуса в метровом слое равняются 190...220 т/га. В пахотном слое почвы содержится от 30 до 90 мг/кг гидролизуемого азота, от 10 до 35 мг/кг — подвижного фосфора и от 200 до 300 мг/кг — обменного калия. Показатели плотности и наименьшей влагоемкости каштановых почв в метровом слое составляют соответственно 1,54 т/м3 и 22,4 %, в слое почвы 0,6 м — 1,42 т/м3 и 25,0 %.
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