REACTION OF SEEDED OATS VARIETIES TO PRE-SOWING TREATMENT OF SEEDS WITH JUSS-1 (B + Cu) PREPARATION
The work reflects the results of studies on the treatment of seed material of oat varieties with the drug ZhUSS-1 (liquid fertilizer-stimulating composition) for field germination of seeds, prevalence of diseases, photosynthetic indicators and productivity of oat varieties (Argamak, Ulov, Gunther, Yakov). Investigations (2003-2016) with different varieties were carried out on sod-podzolic soil in the field crop rotation of JSC «Uchkhoz Iyul'skoe IzhGSKhA». The territory of this farm is located in the Votkinsk District and occupies the southern half of the Udmurt Republic, it is considered a warm, to a certain extent arid region (GTC = 1.0-1.2). The research results showed that the treatment of seed material with the drug ZhUSS-1 contributed to obtaining a higher grain yield by 14.2% in the Argamak variety, by 18.7% in the Ulov variety, by 17.7% in the Gunther variety, by 12.4% in varieties Yakov in comparison with the yield in the control without seed treatment. The increase in the yield of the studied varieties was due to an increase in seed germination by 3-10% in field conditions, by 59-210 thousand m2 x day / ha of photosynthetic potential, by 0.31-0.99 g / m2 per day in the net productivity of photosynthesis, reduction by 7.3- 2.4% of the prevalence of red-brown spotting and by 7.2-8.1% of root rot.