Membrane-encapsulated controlled-release urea fertilizers based on acrylamide copolymers
✍ Scribed by Joshua Abraham; V. N. Rajasekharan Pillai
- Book ID
- 101251130
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 387 KB
- Volume
- 60
- Category
- Article
- ISSN
- 0021-8995
No coin nor oath required. For personal study only.
✦ Synopsis
About 40-70% of the applied urea fertilizer is lost to the environment, causing serious pollution. Controlled-release technology is useful in increasing the efficiency of fertilizer urea as well as in checking environment pollution. Four laboratory-level controlled-release urea fertilizers were formulated based on polymers which are soil conditioners and then evaluated for their slow-release property. Urea was coated with the copolymer of acrylamide and divinylbenzene/N,~-methylenebisacrylamide/tetraethyleneglycol diacrylate or pentaerythritol triacrylate and sealant materials (wax and polystyrene). Urea coated with copolymer of acrylamide-tetraethyleneglycol diacrylate was found to be having a better slowrelease property among the systems prepared.