Dependence of efficiency of annual fodder crops on the degree of intensity of fertilizing systems and fertility level of meadow-soddy soil of the Sakhalin Island. L.V. SAMUTENKO

Abstract

Dependence of efficiency of annual fodder crops on the degree of intensity of fertilizing systems and fertility
level of meadow-soddy soil of the Sakhalin Island. L.V. SAMUTENKO (Sakhalin Research Institute of Agriculture,
Yuzhno-Sakhalinsk).

The productivity of forage crops as a whole and the effectiveness of the extensive, low-intensity and intensive fertilizer systems depend on the saturation of the soil with organic matter, probably its labile part, on the presence of different forms of nitrogen, and the amount of acidity. 1 and 3NK, 2–3NPK, 100–200 t/ha of compost (aftereffect) + 2–3NPK were characterized by a more pronounced positive effect on the productivity of legume-grass mixtures during 3 rotations of crop rotation on all initial backgrounds. The decrease in the content of the nitrogen component in the mineral complexes and the placement of legume-cereal crops as a result of the ameliorant aftereffect led to a loss in the productivity of feed mixtures.