Agroecosystem nitrogen (N) loss produces greenhouse gases, induces eutrophication, and is costly for farmers; therefore, conservation agricultural management practices aimed at reducing N loss are increasingly adopted. However, the ecosystem consequences of these practices have not been well-studied. We quantified N loss via leaching, NH3 volatilization, N2O emissions, and N retention in plant ...

Biochar production and subsequent soil incorporation could provide carbon farming solutions to global climate change and escalating food demand. There is evidence that biochar amendment causes fundamental changes in soil nutrient cycles, often resulting in marked increases in crop production, particularly in acidic and in infertile soils with low soil organic matter contents, although comparabl...

Irrigation with reclaimed wastewater (effluent) is one way to dispose this waste particularly in water scarce arid and semi-arid areas. Secondary effluent used for irrigation contains considerable amounts of N, both in inorganic and organic forms. Whereas attention was given to transformations of inorganic N originated from effluent, little is known regarding the fate of the organic N in efflue...

A novel dipolar-modulated charge-doped trilayer n-n organic heterojunction with a bidirectional tunable energy band discontinuity is constructed. The rectifying mechanism of the trilayer is similar to the rectifying and inverse-rectifying characteristics from n-p and p-n junctions, respectively. Zero-bias optoelectronic behavior and persistent photoconductivity are discovered. These results sho...

Simple and reliable procedures have been developed for analyses of N03 , total N, and organic N in fresh waters. N03is determined by second-derivative UV spectroscopy. Total N and organic N are determined based on secondderivative analyses of N03following persulfate digestion. Resolution of organic N determinations was increased by using ion-exchange resins to remove N03from samples with high c...

much amount of solid waste disposed from human communities, daily. considerable part of these solids is organic waste that recycling and utilization of it by miscellaneous methods to holdup of damage to environment and maintenance of resources and energy is noteworthy for human. one of suitable methods for disposal of these wastes is production of organic fertilizer by use of vermicompost metho...