Contamination of plants and waters with nitrate and sodium is an important environmental problem that can affects humans. An experiment was carried out aiming to evaluate the effect of fertilization and irrigation water quality on NO3- and Na+ contents of drained water and lettuce (Lactuca sativa L.) plants in Rio Claro, São Paulo State, Brazil. Treatments were distributed in a factorial arrang...

The purpose of the research is to study effect and interaction straw-litter compost (20 t/ha), ammonium nitrate (30 kg/ha N) microfertilizer Azosol 36 Extra (2 times 2 l/ha) on fertility indicators typical chernozem for soybean cultivation in southern forest-steppe Central Chernozem region. It was found that increase fertilization level based use contributed positive dynamics organic matter mac...

Nitrate and nitrite are reaction products that result, for example, from the application of nitrogenous fertilizers to agricultural land. That part nitrogen not absorbed by plants can pass into groundwater in form nitrate or nitrite. This also lead contamination drinking water via groundwater, with all its negative side effects. In present article an automatic system is presented, which perform...

abstract by increasing the world population and more need to supply food, farmers attend to use of chemical fertilizers, organic manures and pesticides. also, applications of these agents without attention to their side effects, cause more problems to human health and environment. nitrate is one of the most important elements of organic manures, which leach through soil to surface and ground wa...

minoodasht which is located 18 km. far from the east of gonbad-kaboos, is one of the most important agricultural areas of iran. a great development in the agriculture of this area has been achieved by drilling wells, building canals, constructing the dams and also irrigation of the farms by pump. for determination of the physical and chemical characteristics of the waters from different sources...

nterest in organic fertilizers is growing in the greenhouse industry, but experience and trials are not keeping up. There is little information available on how well the new types of fertilizers provide nutrition for plants compared to traditional water-soluble chemical fertilizers. The most widely available “organic” fertilizers for application like traditional water-soluble fertilizers are fi...

Nitrogen availability is often a limiting factor in plant growth and crop productivity, but the application of nitrogen fertilizers to counteract nitrogen deficiencies can have detrimental economic and environmental effects. Therefore, it is important to understand mechanisms of nitrogen uptake, transport, and utilization within the plant. The most common form in which nitrogen is assimilated b...