Comparative assessment of carrying out nutritious elements with the harvest of various forage crops at application of fertilizers in the conditions of the Central Yakutia

The researches on carrying out nutritious elements with the crop from the soil were conducted in three cli-matic zones of Central Yakutia: Suburban, Zarechnaya and Vilyui. In Zarechnaya and Vilyui zones carrying out nutritious elements and FUC (fertilizers using coeffi-cient) defined on various alasic natural phytocenosis at using organic and mineral fertilizers within four years. In Zarechnaya zone at using humus of 20 t/hectare and mineral fertilizers which are (earlier developed) con-sumption of nitrogen cereal miscellaneous phytocenosis increased by 6.2 time, phosphorus in 3 and potassium by 3.1 times. In Vilyui zone receiving nutrition from the soil and fertilizers at grassy phytocenosis was higher in nitrogen on 3.7-15.7 kg/hectare, in phosphorus on 2.4-3.3 and in potassium on 5.5-6.8 kg/hectare in compari-son with Zarechnaya zone. Irrespective of climatic con-ditions of studied zones high FUC of nutrition from hu-mus of 20 t/hectare (on nitrogen of 37-68 %, phospho-rus of 17-33 % and potassium of 26-45 %) can be ex-plained by mulching effect of superficial introduction of organic fertilizer. In Residential suburb the definition of carrying out basic elements of food from the soil were made by crop on miscellaneous-cereal phytocenosis at using complex fertilizers in the conditions of the second floodplain terrace of the Central Lena valley. So, the introduction of humus in the dose of 20 t/hectare pro-motes the increase of consumption of basic elements of food to miscellaneous-cereals phytocenosis in nitrogen by 2.5 times, in phosphorus in 2, in potassium by 1.8 times. Thus introduction of complex fertilizer (humus of 20 t/hectare once in 4 years + N150P90K60 annually) con-siderably increases consumption of nutrition from the soil. The researches on carrying out basic elements of food with variety oat crop Pokrovsky 9 at using mineral fertilizers were conducted in Suburban and Vilyui zones within three years. The consumption of nutrition ele-ments from the soil in the conditions of the Vilyui zone was defined by climatic conditions, especially extent of moistening. By the researches it was established that raised doses of fertilizers (N150P90K60) in the crops of oats increased the consumption of nitrogen to 203 kg/hectare, phosphorus to 45 and potassium to 76 kg/hectare that was above control group without fertiliz-ers by 93. 20 and 35 kg/hectare.