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is to compare potential atrazine, nitrogen, and sediment loadings from regional conventional and alternative cropping … conventional system, but higher loading levels for nitrogen …
Persistent link: https://www.econbiz.de/10009368639
Agricultural activities have been identified as major contributors to the non-point pollution of the Chesapeake Bay. Low-input agricultural practices are being considered to reduce pollution in areas adjoining the Chesapeake Bay. A multiperiod mathematical programming model was used to examine...
Persistent link: https://www.econbiz.de/10009368649
In this review, we present the recent developments and future prospects of improving nitrogen use efficiency (NUE) in … alternative farming techniques based on no-till continuous cover cropping cultures and/or organic nitrogen (N) nutrition. Whatever …
Persistent link: https://www.econbiz.de/10009295102
Globally, we are applying excessive nitrogen (N) fertilizers to our agricultural crops, which ultimately causes … nitrogen pollution to our ecosphere. The atmosphere is polluted by N2O and NOx gases that directly and indirectly increase … atmospheric warming and climate change. Nitrogen is also leached from agricultural lands as the water-soluble form NO3 2, which …
Persistent link: https://www.econbiz.de/10009323687
Human urine and faeces are products formed every day in every human society. The volume and fertilisation value of urine is higher than that of faeces. This paper reviews data that urine has been used successfully as a fertiliser for cereals and some vegetables. According to the literature,...
Persistent link: https://www.econbiz.de/10008683188
Persistent link: https://www.econbiz.de/10008741154
and available P levels were within the standard limits, but nitrate nitrogen (NO3-N) levels were close to the upper level …
Persistent link: https://www.econbiz.de/10008741179
Combustible biomass fuels may be produced on set-aside land by growing crops that produce a heavy yield of dry matter. Two promising candidate species are Miscanthus and Switchgrass. Establishment of both species was slow and weeds may cause problems. Yields were low because of the short growing...
Persistent link: https://www.econbiz.de/10010804788
.  Four varieties (HC 541, HC 308, HC 171 and HJ 513) and five nitrogen levels (0, 40, 60, 80 and 100 kg N ha-1) were taken in … the main plots and subplots, respectively.  Data collected revealed that varieties and nitrogen levels has a significant …) and grain yield (1949 and 1938 kg ha-1) in both the years. The overall economic optimum nitrogen rate (EONR) was found to …
Persistent link: https://www.econbiz.de/10010769091
are already in commercial use, this first study using this approach suggests that improvements in nitrogen use efficiency …Pastoral farming can result in adverse environmental effects such as nitrogen leaching and greenhouse gas emissions … how efficiently nitrogen leaching and greenhouse gas are used to generate production. We interpret this distribution as a …
Persistent link: https://www.econbiz.de/10010856278