The methods of fertilizers applying and their influence on productivity of sunflower varieties and hybrids in modal chernozem

The article gives the results of researches of 2008-2011 on influence of the methods of fertilizers applying (in sowing, in top dressing of vegetative plants, and the combination of both methods) on the seeds yield and oil collecting of 4 varieties and 2 hybrids of sunflower of usual and special purpose of use. According to these results it was determined that the most effective method of increase of seeds yield and oil collecting is the combination of application of N 30P 30 during sowing with foliage spraying by complex fertilizer in case of formation of 2-4 pairs of leaves.