|
2019, N 4 (38) |
|
GENERAL AGRICULTURE, PLANT GROWING
|
|
Vashchenko A., Kamenev R., Sewostyanova A. |
|
|
Efficiency of application of mineral fertilizers and bacterial preparations under sunflower on ordinary black soil |
|
|
In 2012-2014, the effect of mineral fertilizers and bacterial preparations containing strains of associative nitrogen fixators, as well as their combinations on the yield and quality of sunflower seeds on ordinary black soil of the Rostov region was studied. The yield of oil seeds in the control variant averaged 1.54 t/ha for 3 years. A significant increase in the yield of sunflower seeds and oil collection on the variant with pre-sowing application of mineral fertilizers at a dose of N40P100 was found. The increase compared to the control version was 0.47 t / ha or 30.7%, and in the collection of oil in the crop-224 kg / ha or 37.6%. The use of biological products of associative nitrogen fixators contributed to an increase in the yield of sunflower seeds. The use of biological preparation Flavobacterium was more effective. The increase in the yield of sunflower seeds compared to the option without fertilizers was 0.12 t / ha or 7.8%. The study of the use of bacterial preparations for sunflower on the background of nitrogen-phosphorus fertilizers was ineffective.
Keywords: SUNFLOWER, ASSOCIATIVE NITROGEN FIXATORS, MINERAL FERTILIZERS, ORDINARY BLACK SOIL, YIELD, OIL CONTENT |