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Showing 1 to 9 of 9 for “"Nutrient Balances"”.
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Nutrient balances in terraced paddy fields under traditional irrigation in Indonesia
… focuses on these. The mobility of sediments and nutrients, nutrient uptake during rice growth and the effect of rice straw addition on rice production were evaluated. Sediment was found to be mainly displaced during harrowing in the terraced paddy fields under traditional irrigation, both in the …
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Water and Nutrient Balances of Vegetative Treatment Systems for Feedlots in South Dakota
… was evaluated by determining water and mass balances on each vegetative treatment area (VTA). The balances were determined by measuring all inflow, outflow, evapotranspiration, precipitation, and both soil and water nutrient concentrations within the VTA. Twelve site years have been completed …
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On-farm evaluation of nitrogen use efficiency and nutrient balances at the intra-field scale in north-central Illinois
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-08-01
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Nitrate and phosphorus leaching, surface soil nitrate concentrations, and nutrient balances under conservation tillage and cover crops in central Illinois
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-08-01
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Nutritional and endocrine aspects of the lactation cycle of Holstein and Jersey cows: nutrient balances, response to supplemental dietary fat, rib composition and rib histology
Eight mature Holstein and Jersey cows beginning their third or later lactation were used throughout this study to evaluate various aspects of the lactation cycle. The lactation (control) diet consisted of 28.8% corn silage, 22.4% alfalfa haylage, and 48.8% concentrate dry matter. Breeds responded …
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Nutritional and Management Practices to Reduce Excessive Nutrient Excretion on Dairy Farms
A 2-yr field study was conducted to reduce nutrient losses from Virginia dairy farms through nutritional and herd management practices. Ten collaborator herds were identified, all at state DHIA average or better for milk yield and days open. Baseline feed samples and ration information were …
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EFFECTS OF NITROGEN DEPOSITION ON BOREAL BOGS: A THREE YEAR NITROGEN FERTILIZATION AND TRACER EXPERIMENT
… peatlands play important roles in global C and nutrient cycling. Oligotrophic bogs are naturally nitrogen (N) limited, receiving nutrients only via atmospheric deposition. Increased nutrient deposition, particularly N will almost certainly change the microbiology, biogeochemistry, and C and …
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Diapycnal Mixing and Mass Transfer in Western Boundary Currents
<p>The distribution of nutrient flux in five sections across the Gulf Stream (from the Florida Straits of 35°W) is characterized by an intense core, centered at the depth of the 26.8 σ<sub>t</sub> isopycnal surface. This 'Nutrient Stream' transports nutrients of O(10<sup>3</sup> <em>kmol …
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Effective Modeling of Nutrient Losses and Nutrient Management Practices in an Agricultural and Urbanizing Watershed
… Manassas is experiencing eutrophication due to nutrient loads associated with agricultural activities and urban development in its drainage areas. Two watershed model applications using HSPF, and one receiving water quality model application using CE-QUAL-W2, were linked to simulate Lake …