Production process of perennial ryegrass depending on from pre-sowing seed treatment and seeding rate

Abstract

Perennial ryegrass (Lolium perenne L.) in modern fodder production is one of the valuable fodder plants for pasture and hay use. An important condition for the formation of herbage is to ensure the friendliness of seedlings and the safety of plants, which is achieved through the preparation of seeds before sowing and the optimal feeding area, by determining the seeding rate of crops. The aim of the research is the formation of perennial ryegrass agrocenosis, which ensures a high production process of plants in the conditions of the Middle Urals. Studies on the study of pre-sowing seed treatment and the seeding rate of perennial ryegrass were carried out in 2019-2022. in UNPK-Agrotechnopark FSBEIHE Izhevsk SAA on soddy medium podzolic medium loamy soil. According to the content of humus, soils of medium degree of cultivation with slightly acidic acidity. The content of mobile phosphorus and mobile potassium is very high. Growing seasons 2019-2020, 2022 were characterized by moderately humid warm weather with a hydrothermal coefficient (HTC) of 0.9-1.5, in 2021 the HTC was < 1, there was a lack of moisture for plants. Studies have found that on average for 2020-2022. The highest yield of green mass of perennial ryegrass of the 2nd life of 15.5-15.6 t/ha was formed during pre-sowing treatment with complex fertilizer Agree's Forsage. On average, according to the experiment, the highest productivity of 14.8 t/ha was obtained when sowing 6 million. Correlation analysis of the yield of green mass with photosynthetic potential and with net productivity of photosynthesis made it possible to establish a direct average relationship (r = 0.45 and r = 0.56, respectively). The highest index of leafiness of perennial ryegrass plants (65.6%) was noted in the variant with Agree's Forsage seed treatment and sowing at a rate of 6 million tons. Keywords: PASTURE RYEGRASS, PRE-SOWING SEED TREATMENT, SEEDING RATE, FOLIAGE, PHOTOSYNTHETIC POTENTIAL, NET PHOTOSYNTHETIC PRODUCTIVITY