Results 191 to 200 of about 3,128 (229)
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OXIDATIVE RELEASE OF POTENTIALLY MINERALIZABLE SOIL NITROGEN BY ACID PERMANGANATE EXTRACTION
Soil Science, 1978The relation of potentially mineralizable soil nitrogen, No, to the oxidative release of NH4-N from soil organic matter during extraction with acid KMnO4 was investigated, using 62 soils. Included in the study were members of 8 soil orders comprising 43 noncalcareous and 19 calcareous soils.
GEORGE STANFORD, S. J. SMITH
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Soil Science Society of America Journal, 2008
Tillage practices may affect the active fraction of soil organic N. As part of a national project to examine soil management and environmental controls on the active fraction of organic N, this study examined the effects of no‐till (NT) and conventional tillage (CT) systems on the quantity of potentially mineralizable soil N (N
Mehdi Sharifi +7 more
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Tillage practices may affect the active fraction of soil organic N. As part of a national project to examine soil management and environmental controls on the active fraction of organic N, this study examined the effects of no‐till (NT) and conventional tillage (CT) systems on the quantity of potentially mineralizable soil N (N
Mehdi Sharifi +7 more
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Journal of Environmental Science and Health . Part A: Environmental Science and Engineering and Toxicology, 1993
Abstract There is an urgent need for a rapid and reliable laboratory procedure capable of predicting soil N availability during land treatment of organic wastes or other sources of nitrogen. Soil systems which have been treated with organic wastes will likely to exhibit a relatively high potential to mineralize organic N into soluble forms under ...
R. Saint‐Fort +2 more
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Abstract There is an urgent need for a rapid and reliable laboratory procedure capable of predicting soil N availability during land treatment of organic wastes or other sources of nitrogen. Soil systems which have been treated with organic wastes will likely to exhibit a relatively high potential to mineralize organic N into soluble forms under ...
R. Saint‐Fort +2 more
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Journal of Soil Science and Plant Nutrition, 2021
Maintaining adequate nitrogen (N) supply to dryland cereal crops remains a critical management issue for optimizing productivity and N-use efficiency. Combinations of crop residue and fertilizer-N inputs can be used to manipulate soil-N supply factors at critical stages of plant N demand.
Muschietti Piana, Maria del Pilar +4 more
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Maintaining adequate nitrogen (N) supply to dryland cereal crops remains a critical management issue for optimizing productivity and N-use efficiency. Combinations of crop residue and fertilizer-N inputs can be used to manipulate soil-N supply factors at critical stages of plant N demand.
Muschietti Piana, Maria del Pilar +4 more
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Canadian Journal of Soil Science, 1982
Although it is known that considerable loss in total organic matter has occurred due to cultivation of prairie soils, there is little information on changes in the fertility-related fraction of the organic matter. Twelve prairie surface soils representing paired virgin and cultivated coarse-, medium-, and fine-textured soils from the Brown, Dark Brown,
C. A. CAMPBELL, W. SOUSTER
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Although it is known that considerable loss in total organic matter has occurred due to cultivation of prairie soils, there is little information on changes in the fertility-related fraction of the organic matter. Twelve prairie surface soils representing paired virgin and cultivated coarse-, medium-, and fine-textured soils from the Brown, Dark Brown,
C. A. CAMPBELL, W. SOUSTER
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Communications in Soil Science and Plant Analysis, 2007
Abstract Mineralization of soil organic nitrogen (N) and its contribution toward crop N uptake is central to developing efficient N‐management practices. Because biological incubation methods are time consuming and do not fit into the batch‐analysis techniques of soil‐testing laboratories, an analytical procedure that can provide an estimate of the ...
D. K. Benbi, H. S. Haer
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Abstract Mineralization of soil organic nitrogen (N) and its contribution toward crop N uptake is central to developing efficient N‐management practices. Because biological incubation methods are time consuming and do not fit into the batch‐analysis techniques of soil‐testing laboratories, an analytical procedure that can provide an estimate of the ...
D. K. Benbi, H. S. Haer
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Australian Journal of Soil Research, 1981
The procedure of Stanford and coworkers was used to quantitatively relate net nitrogen mineralization in five Queensland semi-arid soils to temperature. The concentration of potentially mineralizable nitrogen (No) (1) ranged from 67 µg nitrogen g-1 for a red earth subsoil to 256 for a recently cultivated cracking clay surface soil, (2) was directly ...
CA Campbell, RJK Myers, KL Weier
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The procedure of Stanford and coworkers was used to quantitatively relate net nitrogen mineralization in five Queensland semi-arid soils to temperature. The concentration of potentially mineralizable nitrogen (No) (1) ranged from 67 µg nitrogen g-1 for a red earth subsoil to 256 for a recently cultivated cracking clay surface soil, (2) was directly ...
CA Campbell, RJK Myers, KL Weier
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Soil Use and Management, 2005
Abstract. Over the last three decades there has been a great increase in the production of waste from urban, industrial and agricultural activity that could be recycled as a source of plant nutrients, and used to enhance soil quality.
C.M. d. S. Cordovil +3 more
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Abstract. Over the last three decades there has been a great increase in the production of waste from urban, industrial and agricultural activity that could be recycled as a source of plant nutrients, and used to enhance soil quality.
C.M. d. S. Cordovil +3 more
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Journal of Environmental Science and Health . Part A: Environmental Science and Engineering and Toxicology, 1991
Abstract A recent water quality assessment by the Nebraska Department of Health, Water Quality (1987) reported that many municipal wells in the area of Sidney, Nebraska have nitrate (NO3 ‐) concentrations above the maximum safe water drinking standard.
R. Saint‐Fort +2 more
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Abstract A recent water quality assessment by the Nebraska Department of Health, Water Quality (1987) reported that many municipal wells in the area of Sidney, Nebraska have nitrate (NO3 ‐) concentrations above the maximum safe water drinking standard.
R. Saint‐Fort +2 more
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Soil Biology and Biochemistry, 1988
Abstract Aerobic long-term incubations (40-wk) were employed to measure the potentially mineralizable nitrogen (N 0 ) in five 30-yr old cropping systems. The cropping systems consisted of: (1) bare fallow; (2) cropping with no additions; (3) cropping with 80 kg N ha −1 y −1 as Ca(NO 3 ) 2 ; (4) cropping with 80 kg N ha −1 yr −1 as Ca(NO 3 ) 2 ...
T BONDE, J SCHNURER, T ROSSWALL
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Abstract Aerobic long-term incubations (40-wk) were employed to measure the potentially mineralizable nitrogen (N 0 ) in five 30-yr old cropping systems. The cropping systems consisted of: (1) bare fallow; (2) cropping with no additions; (3) cropping with 80 kg N ha −1 y −1 as Ca(NO 3 ) 2 ; (4) cropping with 80 kg N ha −1 yr −1 as Ca(NO 3 ) 2 ...
T BONDE, J SCHNURER, T ROSSWALL
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