"; echo ''; echo ''; $addCommentOnClick = ""; if(check_logged()){ $addCommentOnClick = 'javascript: addComment(\l properties and a low content of humus, nitrate nitrogen, mobile phosphorus, and an average content of exchange potassium. We studied early ripe varieties Kuvonch-1656m, mid-early varieties Bahro-30, Sante and Kondor for the following summer and winter siderates - rapeseed, oil radish, barley, peas, mustard, and peas+oil radish. Winter plowing served as control. The highest biomass productivity ( 29,9-34,5 t/ha ) was observed in summer and winter siderate crops - peas, rapeseed, oilseed radish and pea+oil radish. With these siderates, the proportion of macroaggregates ( >0,25 mm ) in the 0-30 cm layer was 1,6-8,6 ( summer ), 5,8-9,6 percent more ( winter ), and the bulk mass was 0,04-0,07 g/cm3 lower in comparison with the control. After the best siderates ( peas, rapeseed and peas + oil radish ), the humus content in the arable layer increases by 0,01-0,02percent, nitrate-nitrogen 7,40-10,05 mg/kg, mobile phosphorus 14,4-16,3 mg/kg, potassium exchange 10,36-21,10 mg/kg compared with the control. Potato planting after selected siderate crops the germination of seed tubers was 99,6-99,9 percent by variety, seedlings were accelerated by 2-6 days, and the growing season was extended by 4-8 days, the leaf surface area was 20,6-21,7 thousand m2 more, the harvest of tubers from the bush is 206,0-223,7 g more than the control. At the same time, the highest yield of marketable ( 30,0-35,0 t/ha ) and seed tubers ( 21,5-25,4 t/ha ) with a reproduction ratio ( 6,5-7,7 ) was obtained. When planting seed tubers of the studied potato varieties grown after the best siderates ( peas and peas + oil radish ), it was found that the infection of plants with viruses decreased by 9,7-10,2 percent ( in the explicit form ), and in a latent form by 21,9-22,2 percent. The proportion of degenerated tubers decreases by 3,0-3,4percent and contributes to a healthy harvest of seed potatoes