Results 21 to 30 of about 1,115,302 (317)

Treating performance of a commercial-scale constructed wetland system for aquaculture effluents from intensive inland Micropterus salmoides farm

Frontiers in Marine Science, 2022
In intensive inland fish farming, discharge of untreated effluents adversely affects adjacent water bodies and causes water pollution. Thus, it is highly necessary to treat the effluents from inland fish farm.
Bing Li, Rui Jia, Yiran Hou, Jian Zhu
doaj   +1 more source

Estimation of soil nitrogen availability [PDF]

Journal of Agricultural Sciences (Belgrade), 2003
Our research has been made on brown forest soil that is used in long-term experiments. The soil we used had a certain crop rotation (wheat-corn) and had been fertilized according to a certain system for 30 years. In the experiment, quantities of nitrogen
Kresović Mirjana M., Ličina V.
doaj   +1 more source

Nitrogen and phosphorus limitation of phytoplankton growth in New Zealand lakes: Implications for eutrophication control

, 2010
We examine macronutrient limitation in New Zealand (NZ) lakes where, contrary to the phosphorus (P) only control paradigm, nitrogen (N) control is widely adopted to alleviate eutrophication.
Jonathan M. Abell, Deniz Özkundakci, David P. Hamilton, Özkundakci, Deniz, Abell, Jonathan Michael, Hamilton, David P.   +5 more
core   +1 more source

Convergence of soil nitrogen isotopes across global climate gradients [PDF]

, 2015
Quantifying global patterns of terrestrial nitrogen (N) cycling is central to predicting future patterns of primary productivity, carbon sequestration, nutrient fluxes to aquatic systems, and climate forcing.
Brookshire, E. N. Jack, Brookshire, E N J, Mack, Michelle C., Stevenson, Bryan A, Cramer, Michael Denis, Hobbie, Erik A, Richter, Andreas, Viani, Ricardo A.G., Oliveira, Rafael S., Tumer, Benjamin L., Oliveira, Rafael S, McLauchlan, Kendra K, Peri, Pablo L, Mack, Michelle C, Zeller, Bernd, Kahmen, Ansgar, Brookshire, E. N. J., Hasselquist, Niles J., Nardoto, G. B., Craine, Joseph M., Viani, Ricardo A G, Wan?k, Wolfgang, Stevenson, Bryan A., Nardoto, Gabriela B, Nardoto, Gabriela B., Quesada, Carlos Alberto, Brookshire, E.N.J., Turner, Benjamin L., Turner, Benjamin L, Craine, Joseph M, Viani, Ricardo A. G., Cramer, Michael D, Peri, Pablo Luis, Elmore, Andrew J., McLauchlan, Kendra K., Augusto, Laurent, Marin-Spiotta, Erika, Zeller, Bernhard, Kranabetter, J. Marty, Mayor, Jordan R., Hasselquist, Niles J, Richter, Andreas A., Quesada, Carlos A, Kranabetter, John Marty, Hobbie, Erik A., Brookshire, E. N.Jack, Michelsen, Anders, Perakis, Steven S, Wanek, Wolfgang, Craine, Joseph Mitchell, Schipper, L. A., Peri, Pablo L., Elmore, Andrew J, Perakis, Steven S., Kranabetter, J Marty, Schipper, Louis A., Baisden, W. Troy, Koba, Keisuke, Elmore, Andrew James, Viani, Ricardo Augusto Gorne, Baisden, W Troy, Wang, Lixin, Schipper, Louis A, Mayor, Jordan R, Cramer, Michael D., Quesada, Carlos A.   +65 more
core   +1 more source

Changes in the contents of nitrogen fractions with loosing vital capacity of the Siberian fir Abies sibirica Ledeb. seeds [PDF]

Сибирский лесной журнал, 2017
Siberian fir seeds often lose their germinating capacity during storage. This results from, among other factors, changing contents of nitrogen compounds in the seeds, especially those of protein fractions. This paper focuses on analyzing changes of these
S. G. Prokushkin, V. V. Panova
doaj   +1 more source

Influence of enzymative catalysis on technological parameters of apple juice production

Новые технологии, 2021
The article provides data on the investigation of the effect of enzymatic catalysis on the technological parameters of apple juice production. Apples are distinguished by the presence of a heterogeneous high-molecular complex of biopolymers, which ...
L. V. Gnetko, L. P. Nerovnykh, M. M. Udychak, B. B. Siyukhova, M. M. Kobleva   +4 more
doaj   +1 more source

Total Nitrogen in Fertilizers

Journal of AOAC INTERNATIONAL, 1968
Abstract A three-laboratory collaborative study was made of the comprehensive nitrogen method and the new Raney catalyst powder method for total nitrogen in fertilizers. Both methods worked quite well and, with minor modifications, they should provide the basis for a broader collaborative stvidy to provide an official method for total ...
Gary F Krause, Paul R Rexroad
openaire   +1 more source

A spatial total nitrogen budget for Great Britain [PDF]

Science of The Total Environment, 2020
Understanding nutrient budgets makes it possible to predict where and by how much nutrients are accumulating in the environment. Previous studies have considered this problem for nitrogen (N) but have limited themselves to reactive N species (i.e. excluding N2) or have considered total N (including N2) but have been limited to regional or national ...
Xiangwen Fan, Fred Worrall, Lisa M. Baldini, Tim P. Burt   +3 more
openaire   +4 more sources

N Fertilizer in Combination with Straw Improves Soil Physicochemical Properties and Crop Productivity in Sub-Humid, Drought-Prone Areas

Agronomy
Straw returning may be an efficient strategy to maintain agricultural sustainability. However, which straw returning strategy can effectively improve soil properties and crop yield remain unclear.
Qingyue Liu, Liang Lu, Jian Hou, Jinling Bai, Qin’ge Dong, Hao Feng, Yufeng Zou, Kadambot H. M. Siddique   +7 more
doaj   +1 more source

Structural Variations of Bacterial Community Driven by Sphagnum Microhabitat Differentiation in a Subalpine Peatland

Frontiers in Microbiology, 2019
Sphagnum microbiomes play an important role in the northern peatland ecosystems. However, information about above and belowground microbiomes related to Sphagnum at subtropical area remains largely limited.
Wen Tian, Hongmei Wang, Hongmei Wang, Xing Xiang, Ruicheng Wang, Ying Xu   +5 more
doaj   +1 more source