Introduction ield experience and research demonstrate that manure nutrients can be readily substituted for commercial fertilizer. Fertilizer needs depend on soil test levels. Substituting manure at a lower cost than commercial fertilizer can result in signifi cant savings if relatively uniform application and distribution can be maintained. The less nutrient-dense manure requires more hauling o...

In fertilizer-drawn forward osmosis (FDFO) desalination, the final nutrient concentration (nitrogen, phosphorus, potassium (NPK)) in the product water is essential for direct fertigation and to avoid over fertilization. Our study with 11 selected fertilizers indicate that blending of two or more single fertilizers as draw solution (DS) can achieve significantly lower nutrient concentration in t...

The purpose of the research was to evaluate changes in agrochemical properties sour cherry orchard soil after permanent fertilization with urea and potassium sulfate. field experiment conducted during 2017-2021 climatic conditions Central Russian Upland (Oryol region). ‘Turgenevka’ trees grafted on rootstock V-2-180 were planted 2015 at a distance 5x3 m. is loamy Haplic Luvisol following parame...

Canonical correlation analysis was applied to the study of interrelationships between two multivariate datasets, one consisting of available and exchangeable potassium content, and second consisting of pH, hydrolytic acidity, and content of exchangeable aluminum, calcium and magnesium, available phosphorus, and total nitrogen. An attempt has been made to provide an overall pattern of interrelat...

The aim of the first part of this investigation is to assess the radioactive pollution caused by a production plant of complex fertilizers (that is to say containing nitrogen, phosphorus and, in some cases, potassium). Firstly, the authors determine the concentrations of natural radioactivity present in raw materials, end products and wastes of the industrial plant. Then, they carry out an asse...

Goal. Establish the size of accumulation root mass, symbiotic nitrogen by alfalfa, soil fertility and balance essential nutrients in cultivation alfalfa-cereal mixtures under action lime fertilizers. Methods. Field, laboratory, mathematical statistical. Results. The results research on perennial grasses nitrogen, cellulase activity, erosion resistance changes fertility, as well alfalfa cereal a...

Nitrogen is abundant in the earth's atmosphere but, unlike carbon, cannot be directly assimilated by plants. The limitation this places on plant productivity has been circumvented in contemporary agriculture through the production and application of chemical fertilizers. The chemical reduction of nitrogen for this purpose consumes large amounts of energy and the reactive nitrogen released into ...