Brief literature analysis on the topic.
S.V. Koroleva, S.V.Sitkinov, V.V.Skorina, V.F.Pivovarov, L.K.Gurkina, T.V.Lizgunova, V.A.Denisov, R.D.Almasker, I.D.Rajabli, N.B.Petrov, O.N.Vishnevskaya, on the improvement of technologies for growing white cabbage in different regions, under different soil and climatic conditions. A.F. Bukharov, L.I. Uralets, M.N. Shapturenko, V.N. Lukyanets, G.A. Kostenko, A.D. Dzhakhangirov, V.P. Kuzmishchev, G.F. Monakhos; scientific researches were carried out in our republic by V.I.Zuev, O.Kadirkhojaev, B.J.Azimov, A.M.Abbasov, M.Kh.Aramov, A.J.Shokirov and many other scientists. However, comparing the varieties and hybrids of white cabbage, which are being renewed every day, in the future crop, according to their growth, development, productivity, and market yield in different soil and climate conditions, the meadow of Toylaq district of Samarkand region is gray. The development of cultivation technology under the conditions of the soil has not been sufficiently compared scientifically and practically.
Practical significance and application of research results. The influence of zoned and promising varieties and hybrids of white cabbage as a main crop on the indicators of economic efficiency was studied, and the features of crop formation were determined.
The structure and content of the work. The dissertation consists of an introduction, 4 chapters, conclusions, recommendations for production, a list of used literature. The volume is 100 pages, decorated with 12 tables, 1 picture.
The main results of the work. When various varieties and hybrids of white cabbage were planted as the main crop in the conditions of the meadow gray soils of Toyloq district of Samarkand region, the yield of white cabbage increased from 42.1 tons to 51.4 tons per hectare according to years and repetitions. In the experimental years, the yield of varieties and hybrids of white cabbage, such as Eliza, Gregorian F1, Candiza F1, was the highest, correspondingly 45.5; It was 51.4 and 48.6 t/ha. Compared to the control, 1.9-5.8 t/ha excess yield was obtained from these varieties and hybrids.
A brief summary of the conclusions and recommendations. In our experiments, 6 varieties and their hybrids were planted as main crops in the early period. Among these varieties and hybrids, such as Eliza, Gregorian F1, Kandiza F1, depending on the biological characteristics of the varieties and hybrids suitable for the climatic conditions of Toyloq district, due to the comfortable and good growth of white cabbage plants, up to 42.1-51.4 tons per hectare cabbage crop was obtained. When the varieties and hybrids of Aqbosh cabbage, such as Eliza, Gregorian F1, Kandiza F1, were planted in the main crop in the next period, the net profit from one
hectare provided 22,933,800-28,102,300 soums and the level of profitability was 92.3-108.6 percent.
Master's student: O.J.Usmatullaev
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