Sharof rashidov nomidagi samarqand davlat universiteti

ABSTRACT OF MASTER'S DISSERTATION


Relevance of the topic. Today, cabbage, one of the most popular vegetable crops in the world, is 2.82 million. It is grown on an area of more than one hectare. The average yield is 29.4 tons per hectare, and the total yield is 82.8 million. tons. In order to meet the demand for white cabbage, to improve the technology of growing this crop as a main crop for agricultural producers, in which the researches on the determination of the soil and climate of each region of the newly created varieties and hybrids every day, as well as the selection of high-quality and high-yielding varieties and hybrids is relevant.
Today, cabbage is the leading vegetable crop in the world. In order to ensure food security and effective use of existing irrigated areas in the countries of the world with moderate natural and climatic conditions, it is relevant to increase the productivity of this crop and the volume of gross product production by using effective agrotechnologies in the cultivation of white cabbage as a main crop.
In recent years, in our republic, by ensuring the food safety of the population, fully satisfying the need for vegetable products, diversifying agriculture, using land and water resources more rationally, and growing exportable products, farmers and farms large-scale measures are being taken to increase the income.
Also, it is important to study the growth, development, yield and yield of the newly created and introduced varieties and hybrids of white cabbage in the climate and soil conditions of each region.
The purpose of the study. The story of 6 varieties and hybrids of white cabbage is to select promising ones based on the study of its growth, development, yield, high-quality product yield when grown as a main crop, and to give recommendations for production.
The tasks of the research are as follows:
-comparison of white cabbage varieties and hybrids in terms of growth development, productivity, yield quality indicators in the main crop in the next term;
- distinguish promising ones among the varieties and hybrids of white cabbage;
- calculating the economic efficiency of growing different varieties and hybrids of white cabbage as the main crop in the future;
- applying and making recommendations for the production of varieties and hybrids of white cabbage grown as a main crop and having indicators.