AGROTECHNOLOGICAL HARVESTING FEATURES OF TRIFOLIUM REPENS FOR SEEDS

Abstract

The features of the Lugovik new variety Trifolium repens seed yield formation dynamics with a different number of ripe ears were studied, and a comparative assessment of the effectiveness of methods of harvesting seed grass stand with the use of contact action desiccant based on the Reglon Super diquat in the Central Non-Black Earth Region was carried out. White clover (Trifolium repens L.) is one of the best legume components for creating cultivated meadow and pasture agrophytocenoses in temperate areas. A large shortage and high market demand for white clover seeds causes an urgent need to organize commercial seed production of domestic varieties. The most problematic link in the technology of cultivation of this crop is harvesting. The collection of white clover seeds under production conditions rarely exceeds 30-50% of the biological yield. This is due to the low growth of plants, a large amount of leaf mass and the extended period of maturation of inflorescences in previously cultivated varieties. These factors make it very difficult to choose the optimal time and method of harvesting seed stands. The new variety Lugovik is adapted to combine harvesting due to the higher and less flattened flower stalks. At the maximum peak of maturation, the number of browned heads in the Lugovik variety reaches 72-77%, which is noted after 59-70 days from the beginning of flowering or 75-85 days after mowing the herbage. With traditional methods of harvesting, the most effective is single-phase threshing of grass with preliminary desiccation with one of the permitted" List... " preparations based on diquat V. R. (150 g/l) at a dose of 4-5 l / ha, which allows you to collect up to 72% of the formed biological yield of seeds. With the technical capabilities for harvesting seed crops of creeping clover, it is promising to use combines with combing reapers for harvesting or to collect the grown crop using the "Neveyka" technology.