agricultural advancement and population growth have prompted increases in food supplies, and higher crop yields have been made possible through the application of fertilizers. large quantities of livestock and poultry on farms, along with the accumulation of biomass and agricultural residues, can cause contamination of ground water resources and other water sanitation concerns in both developin...

Chemical nitrogen (N) fertilizers are regarded as one of the environmental contaminants in addition to necessity for fossil sources their production. Conversely, it is impossible neglect supply needed essential ingredients plant function. For organic agriculture, crucial use alternative fertilizer management reduce harmful impacts and production costs chemical fertilizers. In a one-year pot exp...

© The Ecological Society of America www.frontiersinecology.org E nitrogen (N) concentrations, often in the form of nitrate, present a water-quality problem of growing concern. Nitrate concentrations in groundwater and rivers in developed areas of the world have risen substantially as a result of the use of synthetic N fertilizers and cultivation of N-fixing crops (Turner and Rabalais 2003). Inc...

Increased nutrient inputs to temperate coastal waters have led to increased occurrences of macroalgal blooms worldwide. To identify nutrients that are limiting to macroalgae and to determine whether different forms of these nutrients and long-term ambient nutrient conditions affect macroalgal response, we used in situ enrichment methods and tested the response of 2 bloom-forming species of macr...

Soybean is traditionally grown in soil, where root symbiosis with Bradyrhizobium japonicum can supply nitrogen (N), by means of bacterial fixation of atmospheric N2. Nitrogen fertilizers inhibit N-fixing bacteria. However, urea is profitably used in soybean cultivation in soil, where urease enzymes of telluric microbes catalyze the hydrolysis to ammonium, which has a lighter inhibitory effect c...

In recent years, the increase in grain yield under irrigated conditions has led to a decrease technological quality of grain. The main reason for this is lack nitrogen during formation wheat on gray soils with low humus content. Under conditions, one most urgent tasks winter and improve quality. According results scientific research, today absorbs 50-55% fertilizers, 20-22% phosphorus fertilize...