ROOT SYSTEM DEVELOPMENT IN AGRO GRAIN IN GRAY FOREST SOIL
Penetration of root system deep into subarable layers and development of its weight reliably guarantees to plants supply by their water and nutrients if the top layers dry up. Need to reveal influence of receptions of the main processing on formation of weight and distribution of root system in arable and the subarable horizons of the gray forest soil became the purpose of our researches. Researches conducted in field long-term experiment I BEND the Vladimir NIISH (Suzdal) on the gray forest middle loany soil. Crop rotation in experience: oats +long term herbs (clover) - long term herbs of 1 g of using - long term herbs of 2 g of using - a winter rye - a spring-sown field - barley. The following options were studied: 1-annual flat sharp processing on depth of 6-8 cm; 2-annual flat sharp processing on depth of 20-22 cm; 3-annual dump plowing on depth of 20-22 cm; 4-level plowing on depth of 28-30 cm under a winter rye, under other cultures in a crop rotation carried out flat sharp processing on depth of 6-8 cm. Experience is put on the gray forest midle loany soil. Researches showed that density of shoots of a winter rye, a spring-sown field and barley doesn't depend on reception and depth of the main processing. In agroecosystems roots of grain crops get into arable and subarable layers of the gray forest soil on depth not less than 150 cm. The highest mass of roots of a winter rye and summer barley is formed in agroecosystems with annual dump plowing on depth of 20-22 cm, and at a spring-sown field - with annual dump plowing and flat sharp processing on 20-22 cm.