The influence of fertilization systems on the productivity of crop rotation and agrochemical indicators of soddy-podzolic sandy loam soil

Изучено влияние запашки побочной продукции и доз минеральных удобрений на продуктивность севооборота и агрохимические показатели дерново-подзолистой супесчаной почвы. Установлено, что осеннее внесение компенсирующей дозы азота по соломе не обеспечило существенного увеличения продуктивности севооборота. Показано, что внесение скорректированных доз фосфорных и калийных удобрений с учетом фосфора и калия, высвобождающихся из соломы предшественника, не привело к снижению продуктивности севооборота по сравнению с применением полных доз удобрений и позволило сохранить Р60 и K360.

English. Straw appears one of the cheapest and accessible source of organic matter able to be used as organic fertilizer directly in agrophytocenosis. Utilization of the straw allows preserving all necessary nutritive substances available for plants directly in soil. Nitrogen and phosphorus contained in the straw is represented with easily accessible forms and appear more effective than artificial mineral fertilizers. Therefore, the main goal of the research appears evaluation of the impact of straw plowback along with mineral fertilizers&#039

Russian. application on the productivity of crop rotation and agrochemical characteristics of sod-podzol sandy soil. The influence of byproducts ploughing and mineral fertilizer doses on the crop rotation productivity and agrochemical indicators of sod-podzol sandy loam soil is studied. It is established that autumn application of a compensatory dose of nitrogen to the straw did not ensure the increased productivity of crop rotation. It has shown that application of correct doses of phosphorus and potassium fertilizers taking into account the phosphorus and potassium from a straw predecessor didn’t bring about the reduction of the productivity of crop rotation in comparison with the application of full doses of fertilizers and allowed saving P60 and K360.