Вплив густоти стояння рослин та удобрення на формування насіннєвої продуктивності сої / Influence of plant density and fertilization on the formation of seed yield of soybeans
Journal Title: Вісник Львівського національного аграрного університету. Агрономія - Year 2018, Vol 22, Issue
Abstract
The article presents the results of studying the influence of the density of standing of plants and fertilizer on the formation of seed productivity of the medium-ripening variety of soya Svyatogor in conditions of irrigation of the south of Ukraine. Field and laboratory studies were carried out on irrigated lands of the Institute of Irrigated Agriculture of the National Academy of Sciences of Ukraine, which is located in the South Steppe of Ukraine in the territory of the Ingulets irrigated massif. The soil of the investigated area is dark chestnut medium loamy slightly solonetsous with a deep level of ground water. Experience two-factor: factor A – seeding rates (300, 400, 500, 600, 700, 800, 900 (thousand), 1 million pieces/ha); factor B – doses of nitrogen fertilizers (without fertilizer, N30, N60). The repetition is fourfold with the placement of variants by the method of the randomized split sections. The area of the planting plot is 22 m2, accounting – 18,5 m2. The agrotechnical conditions for conducting research are generally accepted for the southern region of Ukraine, except for the options that have been studied. Fertilizers were applied to the pre-sowing cultivation, according to the scheme of the experiment. They were conducted on May 2 in 2016 and on the 6th in 2017. Watered DDA-100 MA. Weed control was carried out by applying the soil herbicide Harnes (2 l/ha) and the insurance Picador (1 l/ha). Studies have established that the density of plant standing is closely related to the formation of elements of productivity. Increase in the density of plant standing from 300 thousand pieces./ha to 1 million led to a decrease in the structure of the crop: the number of beans on the plant, the seeds and their weight, regardless of the doses of application of nitrogen fertilizers. The best yield and elements of the crop structure were obtained with the introduction of N60 and the density of plants 600 thousand pieces./ha.
Authors and Affiliations
R. Vozhegova, V. Borovik, D. Rubtsov
Keywords
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