The Experts below are selected from a list of 75963 Experts worldwide ranked by ideXlab platform
Taylor H. Ricketts - One of the best experts on this subject based on the ideXlab platform.
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Determining socially optimal rates of nitrogen Fertilizer Application
Agriculture Ecosystems & Environment, 2018Co-Authors: Jesse D. Gourevitch, Bonnie L. Keeler, Taylor H. RickettsAbstract:Abstract Effective management of nitrogen (N) Fertilizer is central to enhancing agricultural productivity, while improving water and air quality and mitigating climate change. Quantifying “socially optimal” rates of N Fertilizer (i.e. maximizing net benefits to society while minimizing social costs) is a key component of any regulatory or incentive program designed to better manage N Application. Here, we estimate spatially-explicit socially optimal N Fertilizer Application rates for corn in Minnesota that account for uncertainty, both in valuation techniques and model parameters. We find that socially optimal rates of N Fertilizer Application are between 0 and 161 kg ha−1, whereas the private optimum is 165 kg ha−1. Choice of valuation methods shifts the spatial configuration and magnitude of the socially optimal N Application rates illustrating the importance of valuation method and assumptions. Even after accounting for uncertainty in valuation methods, we find reducing rates of N Fertilizer Application offers significant opportunities to improve social welfare. By internalizing the social costs of nitrogen, net social benefits of N could increase by over $1100 ha−1, even while accounting for declines in agricultural yields.
Zhonghou Tang - One of the best experts on this subject based on the ideXlab platform.
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optimized nitrogen Fertilizer Application mode increased culms lignin accumulation and lodging resistance in culms of winter wheat
Field Crops Research, 2018Co-Authors: Xiaoguang Chen, Jing Wang, Zhenlin Wang, Wenyang Li, Chengyu Wang, Hongmin Li, Aijun Zhang, Zhonghou TangAbstract:Abstract The present study used both winter wheat cultivars Jimai 22 (lodging-resistant cultivar) and Yannong 19 (lodging-susceptible cultivar) to investigate the effect of optimized nitrogen Fertilizer Application on lignin accumulation, its related enzyme activities in the basal second internode, and the breaking strength and culm lodging resistance index (CLRI) in winter wheat. Results showed that optimized nitrogen Fertilizer Application rates significantly increased the phenylalanine ammonia-lyase (PAL), tyrosine ammonia-lyase (TAL) and peroxidase (POD) activities as well as lignin accumulation, the breaking strength and CLRI. Lignin accumulation and CLRI could be significantly increased by shifting nitrogen from base to topdressing under identical nitrogen Application rates. Lignin accumulation, PAL, TAL and POD activities, the breaking strength and CLRI were significantly increased by an appropriate increase of the booting Fertilizer proportion (DC 4.1) when identical base and topdressing ratios. These results suggested that the nitrogen Fertilizer Application rate of 202.5 kg hm−2 with the ratio of 4:4:2 for base (DC 0.0), elongation (DC 3.0) and booting stage (DC 4.1) significantly increased the lodging resistance of winter wheat in Xuhuai district.
Joshua Theodore Bazuin - One of the best experts on this subject based on the ideXlab platform.
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Green With Envy: Psychological and Social Predictors of Lawn Fertilizer Application
Environment and Behavior, 2012Co-Authors: Amanda R. Carrico, James C. Fraser, Joshua Theodore BazuinAbstract:Fertilizer Application has many known environmental impacts, and household use of Fertilizer for lawn cultivation contributes a significant amount toward these impacts. Previous study provides a compelling narrative of the social, political, and cultural factors that drive Fertilizer Application; however, the psychological factors involved are not well known. This article examines factors that motivate Fertilizer Application using surveys among a sample of 194 residents within an urban watershed. Measures included aesthetic preferences, financial concerns, social norms, and environmental concerns. A principal components analysis (PCA) revealed four orthogonal factors. Among them, individual interests and social pressures positively predicted Fertilizer Application, as did the likelihood that children and pets play on a resident’s lawn. Environmental concerns were not predictive. These data contribute to an evolving storyline suggesting that households make tradeoffs between lawn aesthetics and concern for the environment and exposure to chemicals in part due to strong social pressures surrounding lawn maintenance.
Wen Chun-bo - One of the best experts on this subject based on the ideXlab platform.
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Present Study Situation of the Silicon Fertilizer Application to Rice
Areal Research and Development, 2003Co-Authors: Wen Chun-boAbstract:On the base of consulting large amount of science and technical references, this article summarized the mechanism of output increasing and quality improving of the silicon Fertilizer Application to rice, reached the conclusion that the Application of the silicon Fertilizer not only can produce good effects on the ecology of rice blades, roots and resistance to disadvantage, but also can improve the utilization ratio of phosphate and nitrogenous Fertilizers. This paper also compared the relation between the effective silicon content of soils and the effectiveness of increase production of the silicon Fertilizer Application to rice, found that there are different ranges of increase production in different soils and it is higher in northern soils than in southern soils. It concluded that there are different critical values of silicon deficiency in different soil types. It is 250mg/kg in Huabei Plain. At last the paper tell the method of the silicon Fertilizer Application to rice and the study trend.
Yu Kun - One of the best experts on this subject based on the ideXlab platform.
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Increased organic Fertilizer Application and reduced chemical Fertilizer Application affect the soil properties and bacterial communities of grape rhizosphere soil.
Scientific reports, 2020Co-Authors: Yu Jiang, Zhao Fengyun, Huaifeng Liu, Yu KunAbstract:Increasing organic Fertilizer Application can improve the sustainability of soil productivity, but the effects of increased organic Fertilizer Application with reduced chemical Fertilizer Application over different time periods on chemical properties and bacterial community of grape rhizosphere soil in an arid region are not clear. In this study, three years of fixed-point field tests were used to compare the effects of various fertilization treatments on the soil properties and bacterial community in the grape rhizosphere. The results showed that (1) T1 and T2 significantly increased SOM, AN, AP and AK contents in grape rhizosphere soil. TN, TP and TK contents in grape leaves of T2 were the highest of those in five fertilization treatments. (2) The abundances of Proteobacteria and Bacteroidetes phyla and especially of Arthrobacter, Pseudomonas, Nitrosopira and Bacillus genera were higher in T2 than in the other samples. (3) SOM, AP and AN contents in soil were the main factors affecting soil bacterial community and mineral element contents in grape leaves and roots according to an RDA analysis. In summary, the Application of organic Fertilizer with reduced chemical Fertilizer for two years had the greatest impact on the soil properties and bacterial community of the grape rhizosphere soil.