Fodder productivity of meadow clover at different seeding rates and mowing phases in Krasnoyarsk forest steppe

The aim of the study is to assess the forage productivity of meadow clover at different seeding rates and mowing phases. The study was carried out in the forest-steppe zone of the Krasnoyarsk Region, on the experimental field of the Department of Plant Growing and Horticulture at the Borsky Research and Production Complex, qualitative analysis - in the research and testing center for quality control of agricultural raw materials and food products of the Krasnoyarsk State Agrarian University in 2017-2020. Meadow clover was sown at rates of 5; 10 and 15 kg/ha. Control - the seeding rate recommended for the forest-steppe zone of the Krasnoyarsk Region, 15 kg/ha. The productivity of meadow clover was assessed by collecting dry matter and crude protein; for this, the yield of green mass in the budding, flowering and fruiting phases of clover was taken into account, the content of dry matter and crude protein in dry matter was determined, and then the collection of dry matter and protein was found by calculation. The collection of dry matter of meadow clover depended on the yield of green mass, seeding rate, weather conditions of the years of research and the mowing phase. The collection of dry matter of meadow clover was influenced by the seeding rate, the mowing phase, the yield of green mass, the content of dry matter in the green mass, and the weather conditions of the years of the study. The collection of dry matter increased from budding to fruiting. The average collection of dry matter in budding was 2.26 t/ha; in bloom - 3.01; in fruiting - 6.54 t/ha. The protein harvest of meadow clover was influenced by the seeding rate, protein content in dry matter, mowing phase and weather conditions of the years of study. The contribution of the seeding rate to the collection of dry matter of meadow clover was 10.8; 10.6 and 12.4 % in the phase of budding, flowering and fruiting. The contribution of the seeding rate to the protein harvest of meadow clover was more significant: in flowering it was 36.0 %, in fruiting - 14.1 %. The seeding rate of meadow clover with the best forage productivity was 15 kg/ha. When sowing at a rate of 15 kg/ha, the dry matter collection in the budding phase was 2.57 t/ha; in bloom - 3.76; in fruiting - 7.27 t/ha. The average dry matter harvesting and protein harvesting rates for the mowing phases were 4.53 and 0.87 t/ha, respectively.