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You searched for: Journal Journal of environmental quality Remove constraint Journal: Journal of environmental quality Publication Year 2015 Remove constraint Publication Year: 2015 Source 2015 v.44 no.2 Remove constraint Source: 2015 v.44 no.2
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1. Contributions of systematic tile drainage to watershed scale phophorus transport

Author:
King, Kevin W.; Williams, Mark R.; Fausey, Norman R.
Source:
Journal of environmental quality 2015 v.44 no.2 pp. 486-494
ISSN:
0047-2425
Subject:
Algae; algal blooms; application rate; best management practices; ecosystem services; fields; freshwater; losses from soil; phosphorus; spring; streams; summer; surface water; tile drainage; water pollution; watersheds; winter; Ohio
Abstract:
... Phosphorus (P) transport from agricultural fields continues be a focal point for addressing harmful algal blooms (HABs) and nuisance algae in freshwater systems throughout the world. In humid, poorly drained regions, attention has turned to P delivery through subsurface tile drainage. Research on the contributions of tile drainage to watershed scale P losses, however, is limited. The objective of ...
Handle:
10113/61311
DOI:
10.2134/jeq2014.04.0149

2. Phosphorus losses from an irrigated watershed in the Northwestern U.S.: Case study of the Upper Snake Rock Watershed

Author:
Bjorneberg, David L.; Leytem, April B.; Ippolito, James A.; Koehn, Anita C.
Source:
Journal of environmental quality 2015 v.44 no.2 pp. 552-559
ISSN:
1537-2537
Subject:
case studies; conservation practices; drainage water; irrigation; irrigation water; monitoring; nutrients; phosphorus; ponds; sediments; surface water; suspended sediment; total maximum daily load; water quality; watersheds; Northwestern United States; Snake River
Abstract:
... Watersheds utilizing surface water for irrigation often return a portion of the water to a water body. This irrigation return flow often includes sediment and nutrients that reduce the quality of the receiving water body. Research in the 82,000 ha Upper Snake Rock (USR) watershed from 2005 to 2008 showed that, on average, water diverted from the Snake River annually supplied 547 kg/ha of total sus ...
Handle:
10113/60495
DOI:
10.2134/jeq2014.04.0166

3. Composting and Gypsum Amendment of Broiler Litter to Reduce Nutrient Leaching Loss

Author:
Adeli, Ardeshir; Sheng, J.; Jenkins, J. N.; Feng, G.
Source:
Journal of environmental quality 2015 v.44 no.2 pp. 676-683
ISSN:
0047-2425
Subject:
Cynodon dactylon; biomass; composting; copper; grasses; gypsum; hay; leaching; litter weight; nitrate nitrogen; nutrients; phosphorus; plant growth; potassium; poultry manure; soil; soil amendments; soil organic carbon; zinc
Abstract:
... The effect of composted litter relative to fresh litter on leaching losses of nutrients has not been well documented. Fresh and composted broiler litter was surface-applied to bermudagrass (hay) [Cynodon dactylon (L.) Pers.] established in undisturbed soil columns based on N need of the grass in the presence or absence of flue gas desulfurization (FGD) gypsum to evaluate an approach to reduce broi ...
Handle:
10113/60925
DOI:
10.2134/jeq2014.04.0144

4. Effect of replacing surface inlets with blind or gravel inlets on sediment and phosphorus subsurface drainage losses

Author:
Feyereisen, Gary W.; Francesconi, Wendy; Smith, Douglas R.; Papiernik, Sharon K.; Krueger, Erik S.; Wente, Christopher D.
Source:
Journal of environmental quality 2015 v.44 no.2 pp. 594-604
ISSN:
0047-2425
Subject:
agrochemicals; drainage water; environmental quality; gravel; growing season; hydrochemistry; nutrients; phosphorus; pollution load; sand; sandy clay loam soils; snowmelt; spring; subsurface drainage; surface water; suspended sediment; tile drainage; water flow; Indiana; Minnesota
Abstract:
... Open surface inlets that connect to subsurface tile drainage systems provide a direct pathway for sediment, nutrients, and agrochemicals to surface waters. This study was conducted to determine whether modifying open inlets by burying them in gravel capped with 30 cm of sandy clay loam soil or in very coarse sand/fine gravel could reduce suspended sediment and phosphorus concentrations and loads i ...
Handle:
10113/60620
DOI:
10.2134/jeq2014.05.0219

5. Measures of Nitrogen Use Efficiency and Nitrogen Loss from Dairy Production Systems

Author:
Powell, J. M.; Rotz, C. A.
Source:
Journal of environmental quality 2015 v.44 no.2 pp. 336-344
ISSN:
0047-2425
Subject:
ammonia; corn silage; cows; crop yield; cropping systems; crude protein; dairy farming; emissions; environmental impact; excretion; farms; field experimentation; milk production; nitrates; nitrogen; nitrogen fertilizers; nitrous oxide; nutrient use efficiency; nutrition; production technology; simulation models; stocking rate
Abstract:
... In dairy production systems, tradeoffs can occur between fertilizer N applications and crop N use, feed N consumption and manure N excretion, and environmental impacts. This paper examines (i) how stocking rates affect N imports and management on dairy farms, N use efficiency (NUE; i.e., the amount of applied N incorporated into product N), and N loss; (ii) how reductions in fertilizer N and feed ...
Handle:
10113/62909
DOI:
10.2134/jeq2014.07.0299