COMPETITIVE TESTING OF OATS VARIETIES IN THE UDMURT REPUBLIC

Abstract

Spring oats has high adaptive capacity in the soil and climate conditions of the Udmurt Republic. The great variety of oats varieties is cultivated in the Republic (feed oats, corn oats, etc.). The authors analyzed oats commercial seeds in 2014-2015, which was 66-75% of the total spring oats. The paper reveals the most efficient varieties cultivated in different agricultural climate zones of the Republic. Gunter and Konkur oats varieties take the most part of the area. Gunter variety is more preferable for northern and central parts of the Republic where it takes more than 21-53% of sowing area. Konkur variety is mostly grown in the southern part of the Republic (more than 16.47 thousands ha) and northern parts - 7.10 thousands ha. The competitive testing of oats which was carried out at Udmurt Research Institute has shown that Stipler, Vsadnik and Liniya 65/12 varieties surpass the crop yield of Agramak (2.07 tones/ha) on 21-28%; they had high coefficient of adaptibility (1.1). The experiment lasted for 2 years and was carried out in 5 climate zones of the Republic; the research results in complex estimation of new and already used in the Udmurt Republic varieties according to the parameters of crop yield and adaptability. The article shows the most productive oats varieties according to the mid crop yield: Vsadnik, Stipler and Yakov. Strong crop yield variations were observed in all varieties. According to plasticity, the most intensive varieties are Avatar, Sapsan and Medved. The Stipler variety, Vsadnik variety and Konkur one require good growing conditions, but they are more resistant to the climate conditions. The Yakov variety, Argamak variety and Galop one have high correlation dependence (r=0.99) on the climate conditions and they refer to the stable varieties.