title: Multifunctional Environmental Smart Fertilizer Based on l-Aspartic Acid for Sustained Nutrient Release.
abstract: Fertilizer is one of the most important elements of modern agriculture. However, conventional fertilizer, when applied to crops, is vulnerable to losses through volatilization, leaching, nitrification, or other means. Such a loss limits crop yields and pollutes the environment. In an effort to enhance nutrient use efficiency and reduce environmental pollution, an environmental smart fertilizer was reported in the current study. Poly(aspartic acid) and a degradable macro-cross-linker based on l-aspartic acid were synthesized and introduced into the fertilizer as a superabsorbent to improve the fertilizer degradability and soil moisture-retention capacity. Sustained release behavior of the fertilizer was achieved in soil. Cumulative release of nitrogen and phosphorus was 79.8% and 64.4% after 30 days, respectively. The water-holding and water-retention capacities of soil with the superabsorbent are obviously higher than those of the control soil without superabsorbent. For the sample of 200 g of soil with 1.5 g of superabsorbent, the water-holding capacity is 81.8%, and the water-retention capacity remains 22.6% after 23 days. All of the current results in this study indicated that the as-prepared fertilizer has a promising application in sustainable modern agriculture.
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and Department of Chemistry, Lanzhou University, Lanzhou 730000, People's Republic of China.
authors.forename: Shaoyu
authors.initials: S
authors.lastname: Lü
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and Department of Chemistry, Lanzhou University, Lanzhou 730000, People's Republic of China.
authors.forename: Chen
authors.initials: C
authors.lastname: Feng
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and Department of Chemistry, Lanzhou University, Lanzhou 730000, People's Republic of China.
authors.forename: Chunmei
authors.initials: C
authors.lastname: Gao
authors.affiliation: Research Institute of Lanzhou Petrochemical Corporation, Petrochina Lanzhou Petrochemical Company , Lanzhou 730060, People's Republic of China.
authors.forename: Xinggang
authors.initials: X
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and Department of Chemistry, Lanzhou University, Lanzhou 730000, People's Republic of China.
authors.forename: Xiubin
authors.initials: X
authors.lastname: Xu
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and Department of Chemistry, Lanzhou University, Lanzhou 730000, People's Republic of China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Bai
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and Department of Chemistry, Lanzhou University, Lanzhou 730000, People's Republic of China.
authors.forename: Nannan
authors.initials: N
authors.lastname: Gao
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province and Department of Chemistry, Lanzhou University, Lanzhou 730000, People's Republic of China.
authors.forename: Mingzhu
authors.initials: M
authors.lastname: Liu
mesh_terms: D001224:Aspartic Acid / Q000737:chemistry*; D003692:Delayed-Action Preparations / Q000737:chemistry*; D004339:Drug Compounding; D004787:Environmental Pollution / Q000517:prevention & control; D005308:Fertilizers / Q000032:analysis*; D009584:Nitrogen / Q000737:chemistry*; D010758:Phosphorus / Q000737:chemistry*; D012987:Soil / Q000737:chemistry
chemical_list: D003692:Delayed-Action Preparations; D005308:Fertilizers; D012987:Soil; D010758:Phosphorus; D001224:Aspartic Acid; D009584:Nitrogen
keywords: multifunctional fertilizer; poly(aspartic acid); sustainable agriculture; sustained release; water holding; water retention