Scientific Reports of the National University of Life and Environmental Sciences of Ukraine

Productivity of alfalfa in the system of organic production under the conditions of climate change

Nadiya Hetman, Lesia Burko, I. Svystunova
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Abstract

The article presents the results of studies of the influence of the modes of use of the grass stand on the forage productivity of different ecotypes of alfalfa. It was established that due to the correction of the alienation of the grass stand according to the main phases of growth and development of the plants, stable indicators of their height along the slopes were obtained. With a combination of organic fertilizers and soil liming, plant growth was within 4.4-4.9 cm, or 6.7-8.9% of the background. Under the conditions of climate change, alfalfa sowing formed stable productivity indicators on the organic background of fertilizer in combination with soil liming. An increase in the yield of leaf-stem mass in the first slope of sowing alfalfa according to the main phases of growth and development was noted, which, regardless of the varietal characteristics of the crop, was in the range of 22.4-23.5 t/ha in the budding phase, 27.6-28.4 t/ha - at the beginning of flowering and 28.3-29.2 t/ha - in flowering. The highest productivity of the culture was provided by the 3rd mode of using the grass stand "three slopes at the beginning of the flowering phase". The southern ecotype of alfalfa of the Unitro seed variety in 4 cuttings produced a leaf-stem mass yield of 64.3 t/ha with a dry matter yield of 14.79 t/ha. The alfalfa variety of the Rosana seed provided 64.8 and 15.60 t/ha, respectively. The yield of crude protein was 2.88-3.03 t/ha, or was higher by 24.7-28.0%, compared to the use of the grass of all slopes in the budding phase. Based on the analysis of the obtained data, it can be concluded that regardless of the change in the alternation of slopes according to the main phases of growth and development of the culture, its endurance and stability to produce regardless of the hydrothermal conditions of the growing season have been noted

Keywords

alfalfa seed, variety, height, organic matter, foliage, budding, flowering, productivity, dry matter

Suggested citation
Hetman, N., Burko, L., & Svystunova, I. (2023). Productivity of alfalfa in the system of organic production under the conditions of climate change. Scientific Reports of the National University of Life and Environmental Sciences of Ukraine, 19(2). https://doi.org/10.31548/dopovidi2(102).2023.006
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