Comparative evaluation of seeding spring wheat methods when using different types of coulters

Abstract

Abstract The studies were carried out with the aim of identifying the most effective method for sowing spring wheat for the Pre-Baikal region through a comparative study of sowing machines of domestic and foreign production with different types of openers according to the backgrounds of dump, non-dump and zero tillage. The research was carried out on the basis of advanced farms in the Irkutsk region, widely using modern sowing units in 2016-2018 on typical gray forest loamy soils. In experiments, in comparison with the SZ-3,6 seeder, the Case IH Concord 2000, John Deere 1830, Morris Concept 2000, Tom-10 sowing complexes were studied, providing strip-spread, tape, single-line sowing with paw, anchor and disk coulters. As a result, it was found that the application of the band-spread method of sowing with the Concord 2000, John Deere 1830, Morris Concept 2000 sowing complexes increases the field germination of spring wheat seeds by 10-20%, plant standing density by 34-42%, and yield by 0.38- 0.47 t/ha. An increase in the depth of seed placement to 5-6 cm led to an increase in the yield of wheat by 0.16 t/ha when sowing SZ-3.6; 0.26 t/ha when sowing John Deere 1830; 0.23 t/ha when sowing Concord 2000. In the pre-Baikal agricultural sector, to increase the yield of grain crops, it is advisable instead of the ordinary method of sowing with the SZ-3.6 seeders to apply the tape and strip-spread methods of sowing with the paw and anchor coulters both for dump and for subsurface processing and for direct sowing. The most promising sowing machines are the sowing complexes Concord 2000, John Deere 1830, Morris Concept 2000 and their domestic counterparts Kuzbass-8.5.