BASIC NUTRIENT CONSUMPTION AND REMOVAL WITH RAPESEED SEEDS WHEN APPLYING DIFFERENT FERTILIZER COMBINATIONS
In the context of different fertilizer combination applica-tion (urea-ammonia liquor KAS-32, liquid complex fertilizer ZhKU, and compound NPK fertilizerDiammophoska) N89P26K26S14, N70P26K26S14, N73P39K13S14, N89P39K13S14, N87P37S14and N71P37S14, we revealed increased removal of CaO to 15.6-20 kg ha as opposed to 13.8 kg ha in the con-trol; MgO to 12.3-16 kg ha compared to 10.2 kg ha in the control. Taking into account Ca and Mg removal without return, it requires the introduction of compound fertilizers containing these nutrients into the fertilizer system. Nitro-gen removal was 110.3-165.5 kg ha compared to 102.6 kg ha, and sulfur -10.9-12.8 kg ha compared to 7.8 kg ha in the control. The S/N ratio ranged from 8.9-15.4 compared to 14 in the control. For the most part, it was equal to 10.7-12.9 which was indicative of satisfactory sulfur supply to oil seed rape crops and the need to increase sulfur dose to 21-28 kg ha. The largest removal of all nutrients was found inthe variants with N73P39K13S14and N71P37S14; the highest yield was formed with N73P39K13S14with N:P:K removal ratio of 1:0.39:0.21