Efficiency of fertilizing in sunflower cultivation technology

Nutritional conditions of plants during the growing season is one main factors aimed at realizing genetic potential sunflower hybrids for them in any soil and climatic conditions. Currently, it important to study domestic under different order identify their competitiveness, which provides an increase quality yield crop. The use production a significant range complex microfertilizers on background fertilizer helps efficiency plant nutrients mineral fertilizers soil, ways crop yields agricultural products. Despite relevance as oil crop, technology its cultivation not perfect study, addition, previous studies often contain conflicting indicators. An place among agronomic techniques increasing productivity belongs provision optimal nutrition season. purpose research was establish influence culture selection high-yielding (NK Diamantis, SI Kupava, NK Neoma) specific through formation productivity. conducted 2018–2019 typical low-humus chernozems. program provided establishment three-factor field experiment, studied (factor A) options B) foliar fertilization crops phase 4 8 leaves with Ecoline Bor, Nertus Bast Bor. are Neoma. results revealed changes diameter inflorescence nutritional created by options. hybrid characteristics also determined this indicator. Plants Diamantis formed baskets, diameters varied from 17.6 21.2 cm, Kupava - 18.8 22.1 Neoma – 17.2 21.6 cm. maximum value obtained variant introduction N36P56K108S28 + N23 Boron (phase leaves) corresponded weight 1 000 achenes belonging genetically traits culture, depending 59.3 62.3 g, 69.8 74.0 68.8 72.6 g. leaves). Studies have shown that most productive (in l / ha) 3.46 t per ha.