Вестник ОрелГАУ, 1(64), Февраль 2017, http://dx.doi.org/10.15217/48484 UDC / УДК 546.18.003.13:631.582:631.855+631.851:631.862+631.84/83 EFFICIENCY AND BALANCE OF PHOSPHORUS FOR TWO CROP ROTATIONS IN MAKING THE ANNUAL AND SPARE APPLICATION OF SUPERPHOSPHATE AND PHOSPHORITE MEAL IN COMBINATION WITH MANURE AND NITROGEN-POTASSIUM FERTILIZERS ЭФФЕКТИВНОСТЬ И БАЛАНС ФОСФОРА ЗА ДВЕ РОТАЦИИ СЕВООБОРОТА ПРИ ЕЖЕГОДНОМ И ЗАПАСНОМ ВНЕСЕНИИ СУПЕРФОСФАТА И ФОСФОРИТНОЙ МУКИ В СОЧЕТАНИИ С НАВОЗОМ И АЗОТНО-КАЛИЙНЫМИ УДОБРЕНИЯМИ Nebytov V.G.1, Candidate of Biological Sciences, Associate Professor, Senior Research Worker of Laboratory of Agricultural Chemistry Kolomeichenko V.V.2, Doctor of Agricultural Sciences, Professor, Corresponding Member of the Russian Academy of Sciences Небытов В. <...> В., доктор сельскохозяйственных наук, профессор, членкорреспондент РАН Mazalov V.I.1, Candidate of Agricultural Sciences, Director 1Shatilovo Agricultural Experiment Station of State Scientific Institution the all-Russia Research Institute of Legumes and Groat Crops, Orel Region, Russia 1Шатиловская сельскохозяйственная опытная станция ВНИИЗБК, Орловская область, Россия Мазалов В. <...> In the condition of the systematic application of phosphate fertilizer plants unused phosphorus presents in the soil in a reversible condition in the four pools and respectively is available for plants in different amounts, providing a lasting effect as an aftereffect [1]. <...> Scientific rationale for the use of phosphorite meal on the northern border of black earth is due to the field experience of «Enriching of the soil by phosphates» [2, 3]. <...> The experimental data set that the effect of phosphorite meal in comparison with superphosphate on the yield of cereals under its basic application is practically the same, a long-effect on subsequent crops is considered and its introduction to stock up on crop rotation as a permanent system 13 Вестник ОрелГАУ, 1(64), Февраль 2017, http://dx.doi.org/10.15217/48484 of admission to fertilizers recommended [4, 5]. <...> However, unbalanced unilateral use of low pay and grain yield of phosphate fertilizers in three-field crop rotation determined the need for use of nitrogen- potash fertilizer to enhance phosphate plant nutrition. <...> The purpose of the study is to research the effects of annual and reserve making of superphosphate and phosphorite meal made by N60K60 background and background with manure and N60K60 on crop yields and changes in the content of available phosphorus in the soil for two crop <...>