Proceedings
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| Filter results2 paper(s) found. |
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1. Phosphorus Loss with Runoff after Applying Fertilizer or Manure as Affected by the Timing of RainfallPublic concerns about agriculture impacts on water quality and the likelihood of further government regulation have been increasing. Phosphorus usually is the nutrient that limits and controls algae growth and eutrophication in freshwater bodies. The uninformed public and many in regulatory agencies see reducing fertilization rates as an effective way of reducing nutrient loss from fields and improving water quality, especially when animal manure is applied. Soil testing for P is a useful, although... |
2. Evaluation of Agricultural Lime and Pelleted Lime to Increase Soil pH and Crop YieldAgricultural lime (aglime) is applied to increase pH of acidic soils to values optimum for crop production, and its effectiveness is affected mainly by it calcium carbonate (CaCO3) equivalent (CCE) and fineness. Availability and use of pelletized limestone has increased in recent years, but there is limited information about its effectiveness. Six field trials were established in 2014 at acidic Iowa soils (pH 4.9-6.1) with contrasting texture and organic matter. Treatments replicated three times... A. Mallarino, M. Haq |