Published in Scientific Papers. Series A. Agronomy, Vol. LXVIII, Issue 2
Written by Nataliia VALENTIUK, Yevgen YURKEVYCH, Olesia DROBIT, Anatolii TOMNYTSKYI, Elgudzha KULIDZHANOV
Recently, the population of Ukraine has been paying more attention to a balanced diet and preferring products that contain the necessary complex of proteins, fats, carbohydrates, vitamins and micro- and macro elements. To meet such needs, manufacturers are constantly replenishing the range of products by adding non-traditional types of food raw materials to the recipes. One of these is a fairly new agricultural crop for our country - Amaranth. The extremely wide possibilities of using Amaranth are gradually increasing the demand for its production. This encourages agro-producers to improve cultivation technology, to obtain stable high yields of grain of this crop. One of the ways to increase the yield of agricultural crops is to regulate the sowing density. This measure allows plants to develop well and accumulate above-ground mass for the formation of a subsequent harvest. The article presents the results of a study of the Amaranth plants growth and development peculiarities depending on the post-emergence plant density. The highest values of amaranth plant height were recorded at the highest post-emergence plant density (180·103 plants/ha). In the phase of full grain ripeness, amaranth plants of the Kharkivs'kyi 1 variety were 164.0 cm high, plants of the Liera variety were 170 cm high. The greatest stem thickness was at a post-emergence plant density of 90 103 plants/ha. The stem thickness of plants of the Kharkivs'kyi 1 variety was 3.0 cm, the stem thickness of plants of the Liera variety was 3.2 cm. The greatest values of (Leaf mass ratio) LMR were at a post-emergence plant density of 150 103 plants/ha. For the Kharkivs'kyi 1 variety, this indicator was 0.197 g/g, and for the Liera variety it was 0.232 g/g. To ensure the best conditions for plant growth and development, the optimal post-emergence plant density was 150 103 plants/ha. The obtained results will help agricultural producers to optimize the sowing parameters when growing Amaranth.
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