fertilizer concentration News

  • Fertilizers – a growing threat to sea life

    A rise in carbon emissions is not the only threat to the planet. Changes to the nitrogen cycle, caused in large part by the widespread use of fertilizers, are also damaging both water quality and aquatic life. These concerns are highlighted by Professor Grace Brush, from Johns Hopkins University in Baltimore, USA, in her historical review1 of landscape changes around Chesapeake Bay, a large ...


    By Springer

  • Fertilizer placement affects nutrient leaching patterns

    Controlled-release fertilizers (CRFs) are a widely used method of delivering nutrients to nursery container crops. The fertilizers contain encapsulated solid mineral nutrients that dissolve slowly in water, and are then released into substrates over an extended period of time. Although the use of CRFs is an accepted practice, growers and researchers are always looking for ways to decrease ...

  • Pesticides, Fertilizers Linked to U.S. Premature Births

    INDIANAPOLIS, Indiana (ENS) - The rising premature birth rate in the United States is associated with increased use of pesticides and fertilizers containing nitrates, according to research by a professor of clinical pediatrics at the Indiana University School of Medicine. Paul Winchester, MD, reports his findings today at the Pediatric Academic Societies' annual meeting in ...

  • Many Countries Reaching Diminishing Returns in Fertilizer Use

    By Lester R. Brown When German chemist Justus von Liebig demonstrated in 1847 that the major nutrients that plants removed from the soil could be applied in mineral form, he set the stage for the development of the fertilizer industry and a huge jump in world food production a century later. Growth in food production during the nineteenth century came primarily from expanding cultivated area. It ...


    By Earth Policy Institute

  • Smart farming technique to boost yields, cut fertilizer pollution

    Researchers at Lancaster University are using X-rays to help farmers increase yields and cut water pollution following an unexpected discovery in a pea and bean crop. Plant and Soil Scientists hope to combine two new technologies to provide a rapid "same day" measurement of soil phosphorus availability, enabling farmers and growers to make more informed decisions about fertiliser ...


    By Lancaster University

  • Fertilizer and plastic pollution are main emerging issues in 2011 unep year book

    Fertilizer and plastic pollution are main emerging issues in 2011 unep year book Massive amounts of phosphorus, a valuable fertilizer needed to feed a growing global population, are being lost to the oceans as result of inefficiencies in farming and a failure to recycle wastewater. Phosphorus pollution, along with other uncontrolled discharges, such as nitrogen and sewage, are linked with a rise ...

  • What the Fertilizer Industry Has Been Doing to Reduce Groundwater Pollution

    The fertilizer industry is very concerned and engaged in the issue of nitrate contamination in California's groundwater supplies, according to Richard Cornett, communications director for the Western Plant Health Association in Sacramento, a trade group that represents fertilizer companies, manufacturers and retailers. Regarding a recent UC Davis study on the issue, the fertilizer industry ...


    By Marketwire

  • GE and Houweling’s Tomatoes Unveil the First Greenhouse Combined Heat and Power Project in the US with Carbon Dioxide Fertilization

    GE (NYSE: GE) and its customer Houweling’s Tomatoes, a leading North American greenhouse grower, today unveiled the first combined heat and power (CHP) greenhouse project in America that captures carbon dioxide (CO2) for use in plant fertilization. Using two of GE’s 4.36-megawatt (MW), ecomagination-qualified ...


    By General Electric

  • Nitrogen use by warm-season grasses for biomass production

    Perennial, warm-season grasses are being evaluated as potential renewable energy crops. These species are well-suited for the production of biomass for energy applications because they utilize C4 photosynthesis and are perennial. Grasses that employ the C4 photosynthetic pathway use water, nitrogen (N), and solar radiation more efficiently than plants having the C3 pathway, and therefore are ...

  • Haifa Group Introduces a Mobile App Supporting Growers` Fertigation Practice

    The FertiMatch™ app helps the grower determine the right amount of fertilizers needed for a desired composition. The grower inserts details regarding his Fertigation control head, chooses a reference element and concentration and the fertilizer (Haifa or other). The output provides the fertilizer quantity needed and the concentration of elements in the irrigation water.   ...


    By Haifa Group

  • Nitrogen in reclaimed water can benefit turfgrass

    As competition for fresh water increases and fertilizer prices rise, the horticulture industry is looking to reclaimed wastewater as a valuable resource for supplying irrigation and necessary nutrients for urban landscapes. In the U.S., Florida is a leading user of recycled water; more than 50% of the state's reclaimed water is being put to use for irrigation of recreational areas such as golf ...

  • Ultra-fine coatings on sediment grains influence nitrate and sulfate storage in soil

    Tiny sediment grains are covered with a very fine-grained, complex mixture of minerals in an open fabric that results in a large surface area in contact with water between the grains. Scientists at the U.S. Geological Survey (USGS) are studying this microscopic layer and finding that the mineral composition of these coatings on sediment grains in the unsaturated zone (i.e., between land surface ...

  • New Material to Enhance Soils using Manure Waste

    The results of the research group of Valuation of resources from Universidad Politécnica de Madrid suggest an optimal solution to manage the manure from chicken and cattle. Biochar, a material obtained after thermal treatment of this waste through pyrolysis, is an organic fertilizer that applied in ...

  • Select groundcover management systems found viable for organically managed apple orchard

    Determining and implementing orchard management practices that can improve soil organic matter is one of the primary goals of the USDA's National Organic Program. For producers in the southeastern United States, where interest in small-scale and organically managed orchards is growing, the challenge can be finding combinations of groundcover management systems and organic nutrient sources that ...

  • Nutrient Management Plans: A Study in Cause and Effect

    It seems practical on the surface. Nutrient management plans (NMPs) should supply plants with ideal amounts of nutrients, minimize runoff, and maintain or even improve the soil condition. And the farmer behind the plan would work with a set of conservation practices designed to reduce harmful pollutants while still obtaining optimal crop yields. However, many U.S. Animal Feeding Operations (AFOs) ...

  • Don`t blame the pill

    Contrary to popular belief, birth control pills account for less than 1% of the oestrogens found in the nation's drinking water supplies. This was the conclusion of research scientists after conducting a study on the topic, the results of which appear in the American Chemical Society's bi-weekly journal Environmental Science & Technology. The hormone oestrogen is a source of concern ...

  • USSEC Provides Trade and Technical Servicing to Shrimp Producers in Peru

    USSEC provided technical support to commercial shrimp growers in Peru by holding multiple discussions with a feedmill representative and fish and shrimp producers about modifying diet formulations for fish and shrimp by incorporating more soybean meal derived from U.S.-grown soybeans. Visits to fish and shrimp farms and facilities by USSEC consultants Dr. John Hargreaves and Jairo Amezquita ...

  • Application brief: Reverse Osmosis of Greek-style yogurt whey

    The Greek, sometimes referred to as strained, yogurt category in the US has exploded onto the scene causing significant disruption in the overall refrigerated yogurt market. Greek yogurt accounts for some 44% of the total yogurt category sales value in the US, up from just 4% in 2008. A typical, modern manufacturing process for Greek yogurt involves high heat treatment of skim milk, inoculation ...


    By GEA Filtration

  • 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 ...


    By American Society of Agronomy

  • New environmental risk assessment of veterinary antibiotics applications in livestock farming

    Sustainability Scientists at Leuphana University of Lüneburg have devised a simple screening-based predicting procedure for region-specific environmental risks caused by veterinary antibiotics (VA). This procedure, called Usage Pattern-based Exposure Screening (UPES), makes use of utilization patterns of antibiotics in animal husbandry. By improving targeting, it enables the identification ...

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