Rice (Oryza sativa L.) is the most important food crop not only in Asia but also entire world. Over past several decades, conventional fertilizer application for rice has caused loss of nutrients, which could lead to a series environmental problems such as eutrophication and greenhouse effects. The emergence slow controlled-release fertilizers provides new option more efficient fertilization ri...

Tillage practices and nitrogen (N) sources are important factors affecting rice production. Few studies, however, have examined the interactions between tillage practices and N fertilizer sources on NH3 volatilization, nitrogen use efficiency (NUE), and rice grain yield. This study aimed to investigate the effects of N fertilizer sources (no N fertilizer, inorganic N fertilizer, organic N ferti...

A new controlled release fertilizer was developed by coating urea particles with bio-based polyurethane. Coating materials were synthesized from liquefied wheat straw, isocyanate, and castor oil. The effects of liquefied solvents, mass ratio of liquid to solid, size of wheat straw, and reaction time during liquefaction process on the nitrogen release rate of polyurethane-coated urea (PCU) were ...

Abstract In this study, an eco-friendly controlled release fertilizer cellulose-based hydrogel was prepared from cellulose fibers derived wastepaper, epichlorohydrin (ECH) as a crosslinker and carboxy methyl (CMC) gelling agent. A maximum swelling capacity of 2000% achieved for with optimum composition. The soil moisture contents in the presence optimized hydrogels were determined using digital...

A novel interpenetrating polymer network (IPN) has been synthesized through enzymatic initiation using lipase as initiator, glutaraldehyde as cross-linker, acrylic acid as primary monomer and acrylamide as secondary monomer. Biodegradability of synthesized interpenetrating polymer network was studied through soil burial and composting methods. Synthesized hydrogel was completely degraded within...