Sharof rashidov nomidagi samarqand davlat universiteti

As a research object, the gray soil of Samarkand region meadow, seeds, plants, cabbages of varieties and hybrids of white cabbage such as Navruz, Eliza, Coronet, Bourbon F1, Gregorian F1, Kandiza F1 were taken.
Research subject. The varieties and hybrids of Aqbosh cabbage such as Navruz, Eliza, Coronet, Bourbon F1, Gregorian F1, Kandiza F1 will serve as the main crop in the future, as well as indicators such as growth and development, productivity and productivity.
Method and methodology of research.
The analysis of soil and plant samples was carried out in the laboratory of the Samarkand Research Institute of Agricultural Innovations and Research, Department of Agrochemistry, Soil Science and Plant Protection, and Samarkand Research Institute of Potato Crops. The methods of "Methodology of conducting experiments in vegetable growing, rice growing and potato growing" (B.J.Azimov., B.B.Azimov. 2002), "Metodokiya polevogo opyta" (B.A. Dospekhov. 1985), "Metody biokhimicheskogo issledovaniya rasteniy" (1987) were used for conducting experiments.
Scientifically innovative level of research. For the first time, under the conditions of the Samarkand scientific research station of the Scientific Research Institute of Vegetables and Potatoes, located in the Toyloq district of Samarkand region, varieties and hybrids of white cabbage such as Navruz, Eliza, Coronet, Bourbon F1, Gregorian F1, Kandiza F1 were planted as the main crop in the future period. Then the growth, development and productivity of these cultivated varieties and hybrids were studied, and the production of high-quality crops was scientifically justified. In addition, the economic efficiency of growing different varieties and hybrids of white cabbage in the future period was calculated.
The main issues and hypotheses of the study. When different varieties and hybrids of white cabbage such as Navruz, Eliza, Coronet, Bourbon F1, Gregorian F1, Kandiza F1 are planted in the future period, depending on the variety, the growth development of the plant, the formation of the crop, the composition of the crop, productivity, economic efficiency indicators were studied, varieties and hybrids that provide the highest yield were selected and recommended for production.
​ The hypothesis of the research is that in the conditions of the soils of the Samarkand Research Institute of Vegetable Crops and Potato Research Institute, located in Toyloq district of Samarkand region, in the future, when different varieties and hybrids of white cabbage are planted, among them, high and quality crop-forming varieties will be produced in accordance with the climate and soil conditions. separation is assumed.