Зерновое хозяйство России (May 2018)
The improvement of the efficiency of fertilizers’ use for spring barley sowings
Abstract
The improvement of the efficiency of fertilizers’ use for spring barley sowings According to three-year long researches and farming tests the article presents the efficiency of fertilizers’ use combined with the compound microelement fertilizer “Akvadon-Mikro”. The principle effect of microelements and their use with mineral fertilizers upon increase of barley productivity has been established. On average the grain productivity was 2.25 t/ha on the control variant. While using mineral fertilizers (in proportion of N40P60K90) the yield increased on 0.73 t/ha with the payback of 1 kg of NPK equal to 3.9 kg of grain. The use of the fertilizer “Akvadon-Mikro” increased the productivity up to 0.98 t/ha, with the payback of 1 kg of NPK equal to 5.2 kg of grain. The use of the fertilizer in proportion of N28P40K60 increased the productivity on 0.99 t/ha with the payback of 1 kg of NPK equal to 7.8 kg of grain. The farming experiments showed that the use of the fertilizer in a reduced to N28P40K60 proportion combined with the microelement fertilizer “Akvadon-Mikro” produced the largest yield of grain (3.89 t/ha), that is on 1.91 t/ha more than that of the control variant. The use of the fertilizers with this microfertilizer increased the profit per hectare on 31 745 rb and on 803.7 rb per 1 hwt of barley, if the fertilizer was used in proportion N40P60K90. The profitability has increased on 61% compared with the control variant and it is 161.9%. When the fertilizer was used in proportion N28P40K60, the profit per hectare increased on 32 286 rb and on 830 rb per 1 hwt of barley. The profitability has increased on 75.7% compared with the control variant and it is 176.6%. The study showed, the use of microfertilizers has become an important factor of barley productivity increase, providing reliable yields. On average during the years of study the efficiency of a combined use of microelements and mineral fertilizers was the same. Due to better assimilation of nutrients, the use of a microelement fertilizer increased productivity on the areas with various fertilizing, which made it possible to reduce the dosage of mineral fertilizers.
