Open AccessInfluence of seeding rate on grain and seed productivity of winter barley
Author(s) -
Л. А. Радченко,
T.L. Ganotskaya,
А. F. Radchenko
Publication year - 2021
Publication title -
tavričeskij vestnik agrarnoj nauki
Language(s) - English
Resource type - Journals
ISSN - 2542-0720
DOI - 10.33952/2542-0720-2021-1-25-187-194
Subject(s) - seeding , hectare , agronomy , productivity , steppe , yield (engineering) , biology , winter wheat , environmental science , agriculture , ecology , materials science , metallurgy , economics , macroeconomics
High yields of winter barley significantly depend on the elements of cultivation technology, among which seeding rate is of considerable importance. The aim of the current research was to identify the optimal seeding rate for winter barley in the current climatic conditions of the steppe zone of the Crimea. Winter barley variety ‘Buran’ served as a material of this study. In the course of the research we studied five variants of seeding rate – 1.0; 2.0; 3.0; 4.0; 5.0 million seeds per hectare. The experiments were carried out in the central steppe zone of the Crimea in 2018-2020 according to the methods of the State variety testing of agricultural crops. The first year of research was favourable in climatic conditions; the second one – unfavourable during the entire growing season. The survey highlighted some key points: the seeding rate influences the main components of winter barley yield – plants (stems) density and productivity of the ear. Over two years, an increase in the seeding rate increased plant density on average from 229 to 465 plants per m2. Ear productivity (grain weight per ear), on the contrary, decreased from 2.5 to 1.3 g. The yield of winter barley depended on the weather conditions of the year and, on average, reached 5.76 t/ha in 2019 and 3.41 t/ha in 2020 (which is 41 % less than in 2019). In 2019, at a seeding rate of 1.0 million/ha, a minimum yield (4.71 t/ha) was obtained. At other seeding rates, the yield of winter barley was statistically equivalent: 2.0 million/ha – 6.07 t/ha; 3.0 million/ha – 5.99 t/ha; 4.0 million/ha – 5.96 t/ha; 5.0 million/ha – 6.11 t/ha. In 2020, seeding rate did not have any effect on the yield of winter barley. It varied from 3.23 to 3.52 t/ha and was within the experimental error. The dependence of the indicators of grain quality on the seeding rates was noted only in 2020 for 1000-grain weight, which was significantly higher at seeding rates of 1.0 and 2.0 million/ha (36.8 and 36.7 g, respectively) compared to other studied ones. According to the efficiency of seed reproduction, the variants with the minimum seeding rates (1.0 and 2.0 million/ha) were the best. The rate of reproduction in these cases was 91 and 55, respectively.