manure phosphorus News
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Target the crop not the soil - to reduce fertiliser use
Feed the crop not the soil’ is the message of a new review into sustainable phosphorus use. Currently, phosphorus fertiliser is applied to the soil, and plants then take it up through the roots. However, more precise nutrient management is needed on farms, the researchers say, so that the phosphorus is targeted at the crop just as it needs it. Modern agriculture is dependent on phosphorus, ...
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Improve crop yield by removing manure solids
Manure has long been used as a crop fertilizer, but the challenge of finding an efficient use of the nutrients found in manure is ever present. The ratio of nitrogen to phosphorus in manure is low in relation to the nutrient needs of most crops. Therefore, crops tend to be overloaded with manure to meet the nitrogen requirement of agricultural crops, but the excess phosphorus from the process can ...
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Tracking phosphorus runoff from livestock manure
Nutrient runoff from livestock manure is a common source of agricultural pollution. Looking for an uncommon solution, a team of scientists has developed an application of rare earth elements to control and track runoff phosphorus from soils receiving livestock manure. In addition to reducing the solubility of phosphorus, this method shows particular promise for researchers interested in tracking ...
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Study probes sources of Mississippi river phosphorus
In their eagerness to cut nitrogen and phosphorus pollution in the Mississippi River and Gulf of Mexico, people have often sought simple explanations for the problem: too many large animal operations, for instance, or farmers who apply too much fertilizer, which then flows into waterways. But according to new modeling research that examined phosphorus loading from all 1768 counties in the ...
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Manure and sewage can provide crops with more phosphorus than chemical fertilisers
Phosphorus in sewage and manure could be more available to crops than previously thought, suggests new research. The study found that some forms of sewage and manure treatment provided plants with more phosphorus than conventional inorganic fertilisers. Over the past 50 years, chemical fertilisers containing inorganic phosphorus have boosted crop yields and food production across the globe. ...
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LWR manure treatment system goes solar
Solar energy is now making it easier for farms to implement the manure treatment technology that is revolutionizing the livestock industry. Livestock Water Recycling's Innovation Centre has just released the latest advancement in manure treatment technology which allows farmers the ability to power their LWR Manure Treatment System by solar energy. "Farmers inherently want to leave the world ...
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Soil phosphorus in an organic cropping system
Phosphorus is a nonrenewable resource, raising concerns that agricultural practices may deplete reserves. (For one overview discussion of phosphorus, see Phosphorus Famine: The Threat to Our Food Supply in the June 2009 Scientific American.) Organic farming with low phosphorus inputs can result in deficient levels of plant-available phosphorus (available-P).A group of researchers from Canada ...
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New EPA requirements for controlling wastewater from large animal feeding operations
EPA has finalized a rule helping to protect the nation’s water quality by requiring concentrated animal feeding operations (CAFOs) to safely manage manure. EPA estimates CAFO regulations will prevent 56 million pounds of phosphorus, 110 million pounds of nitrogen, and 2 billion pounds of sediment from entering streams, lakes, and other waters annually. “EPA’s new regulation of animal feedlots ...
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