Formation of seed productivity and sowing qualities of red clover seed depending on the effect of lime, mineral and water-soluble fertilizers

Abstract

Aim. Development of effi cient fertilization of red clover seed sowings with mineral, lime and microfertilizers in order to optimize plant nutrition during their vegetation period to obtain stable seed yields with high sowing and yield qualities. Methods. fi eld, visual, measuring, weight, quantitative, method of a test sheaf, laboratory, mathematical-statistical. Results. The paper presents the results of optimizing the nutrition of red clover seed sowings on the basis of the rational application of quick-acting lime (Ca(OH) 2 – 0.5 of the rate by hydrolytic acidity, mineral (N 30 P 60 K 60 ) and water-soluble fertilizers, which ensured seed yield increase 1.8–2.0 times at the level of 0.35–0.40 t/ha. Conclusions. The most effective combination of the basic fertilization with mineral fertilizers (N 30 P 60 K 60 ) and lime fertilizers (Са(ОН) 2 ) at the rate of 0.5 by hydrolytic acidity applied under the cover crop using water-soluble fertilizer (plantafol – 1.0 kg/ha) and boric fertilizers (H 3 BO 4 – 0.8 kg/ha) at the shooting stage of the second cut of red clover and molybdenum fertilizers ((CNH 4 ) 2 MoO 4 – 0.3 kg/ha) in spring at the beginning of its regrowth.