CUCUMBERS CULTIVATION EFFICIENCY IN CONDITIONS OF THE LOWER VOLGA REGION LIGHT-BROWN SOILS
It is important to know basic biological features, heat requirements, light, moisture and soil conditions, vegetation period feeding factors for the growth of environmentally friendly products of vegetable crops. Climate, topography, agro-chemical and agro-physical soils properties, methods of soil cultivation, vegetable crops varieties, post - harvesting processing and storage are greatly affected on vegetables crop improvement. With the optimal combination of these factors excellent flavor and product properties vegetables high yields can be produced. All the factors are of equal value. With a large variety of domestic and foreign selection vegetable seeds the varieties and hybrids, which have a high plasticity index, a significant level of potential yield and suitability for climatic conditions are more preferable. In order to identify cucumber varieties and hybrids, adapted to the light-brown soils conditions and the weather factors of the Lower Volga region, research has been conducted. Analysis of experimental data results allowed to identify a number of cucumber hybrids with high biological productivity - 124.6... 72.5t /ha and adaptability with coefficient units : Musical fingers (1.84), Pupa (1.70) Day, Russian style (1.66), and others. And a group of determined medium adaptability hybrids yield 55.9... 51.8t / ha, their cultivation does not require such a significant financial expenses. Low adaptability hybrids with yielding index 46.1...12.6 t/ha and a coefficient of 0.19... 0.56 adaptability can also be used at the least cost on small squares.