soil-water conductivity News

  • Challenges in soil and water conservation

    Productive soils and clean water are essential elements for economic and social prosperity and environmental sustainability. Throughout history, civilizations have thrived or collapsed based on the availability of these vital resources. The lack of arable land and evidence of soil degradation have been identified as causes for the fall of many ancient civilizations, such as those in Mesopotamia, ...

  • Root hydraulic conductance linked to trees` post-transplant recovery

    Survival of field-grown trees grown for transplanting into landscapes depends on many factors, such as transplant timing and tree size. Species-specific characteristics also contribute to trees' ability to withstand and survive environmental stresses. In a newly published study researchers report on the relationship between tree roots' hydraulic conductance -- the roots' ability to take up water ...

  • Philippines: IRRI conducts first training on laser leveling of rice fields

    The Training Center Unit of the International Rice Research Institute (IRRI) conducted its first laser leveling course at IRRI Headquarters on 2 -5 February. The 4-day course is designed to train participants in 1) operating four-wheel tractors; 2) conducting field topographic surveys; 3) understanding the principles of laser leveling; 4) creating field plans for efficient laser leveling; 5) ...

  • Free Software Lets You Use HydraProbe to Determine Soil Water Retention Curve

    The Soil Water Characteristics software is a hydraulic properties calculator, developed by the USDA and Washington State University. It estimates soil water tension, conductivity and water holding capability based on the soil texture, organic matter, gravel content, salinity, and compaction. The software is for Windows-based PCs and is available for free ...

  • Continuing nightmare in Bhopal: CSE laboratory tests soil, water samples from Union Carbide

    For more than 25 years, the Union Carbide (UCIL) factory has been contaminating the land and water of Bhopal. Latest tests show that groundwater in areas even three km away from the factory contains almost 40 times more pesticides than Indian standards. These are the findings of a study released here today by the New Delhi-based research and advocacy organisation, Centre for Science and ...

  • Impacts of tillage on soil and crops

    The increasing popularity of reduced tillage on crops has not only been an important development in combating soil erosion, but it has also been associated with increasing organic material and producing high crop yields. For peanut crops, however, reduced tillage has not gained a large acceptance as a viable practice, as findings of inconsistent yields have not encouraged farmers to make a switch ...


    By American Society of Agronomy

  • Improving Soil for Better Lawns and Gardens

    U.S. Department of Agriculture (USDA) scientists in West Virginia are finding ways to improve soil on degraded land so it can be used for sports fields and other uses. Researchers with USDA's Agricultural Research Service (ARS) at the agency's Appalachian Farming Systems Research Center (AFSRC) in Beaver, W.Va., are developing constructed or replacement subsoils and topsoils to build better and ...

  • Nitrogen fertilizers` impact on lawn soils

    Nitrogen fertilizers from farm fields often end up in aquatic ecosystems, resulting in water quality problems, such as toxic algae and underwater ‘dead zones’. There are concerns that fertilizers used on lawns may also contribute to these problems. All of the lawns in the United States cover an area almost as large as Florida, making turfgrass our largest ‘crop’ and lawn ...

  • Manure runoff depends on soil texture

    Research has documented the rise of nutrient runoff from flat agricultural fields with high rates of precipitation that adds nitrates and phosphates to waterways. These nutrients increase the amount of phytoplankton in the water, which depletes oxygen and kills fish and other aquatic creatures. While injecting animal manure slurry into the soil has been proven to be an effective way of reducing ...

  • Preventing soil erosion in continuous corn

    With recent increase in the cost of energy and subsequent explorations into alternative energy sources, the increased harvest of corn residue for cellulosic ethanol production is likely in the future. This may be especially true in fields where corn is grown continuously, in part because perennially high residue amounts favor annual harvests, and also because corn residue left on the soil surface ...

  • The importance of measuring and monitoring soil moisture

    Crop irrigation uses more than 70% of the world’s water, and thus, improving irrigation efficiency is decisive to sustain the food demand from a fast-growing world population.* In future measuring and monitoring soil moisture will get more and more important to meet the needs of an increasing demand for food. Eijkelkamp offers solutions with a wide range of ...


    By Eijkelkamp Soil & Water

  • Past, present and future of soil sciences

    The Soil Science Society of America (SSSA) is reporting the results of a recent survey of trends related to the soil science profession. The results suggest that employment opportunities in soil and related sciences are increasing, and students, academics, and employers have a positive outlook for the future of soil science. Despite these positive findings, the survey identified areas to be ...

  • Soil nitrogen test measures microbial nitrogen

    Contrary to the prevailing view, cereal crops derive the majority of their nitrogen from the soil, not fertilizer. Soils differ considerably in microbial activities that determine nitrogen-supplying power, and these differences must be taken into account if nitrogen fertilizers are to be used efficiently. The Illinois Soil Nitrogen Test (ISNT) was developed for this purpose, and involves ...


    By ScienceDaily

  • Soil gives away soybean pathogen’s presence

    New research reveals that soil pH is a useful guide for farmers and agronomists to detect and manage soybean cyst nematode, a devastating soybean pathogen. The investigation uncovered a relationship between high soil pH, which is already outside the ideal growing conditions for soybean, and high populations of cyst nematodes. Scientists from Iowa State University and University of ...

  • Through microbes, nitrogen alters soil carbon cycle

    Soil scientists studying bacterial communities in hardwood forests have found evidence that extra human-derived nitrogen deposited from the atmosphere can change the composition of the soil microbial community, with implications for carbon cycling and sequestration. Don Zak and Sarah Eisenlord from the University of Michigan conducted a study on the response the soil bacterial community to levels ...

  • Tropical soil carbon sink under threat

    There are strong concerns that the conversion of tropical forests into land for agriculture or plantations has negative effects on the carbon budget. A new study conducted in South-East Asia reveals that moderate or heavy disturbance of tropical forests can damage fine root structures, which in turn reduce carbon transfer to the soil. Tropical forests are being converted into agricultural land or ...

  • Simple method to estimate soil carbon stocks in grassland

    Storage of carbon in soil helps to keep land fertile and regulates the climate, and is therefore an important ecosystem service. However, mapping of soil carbon stocks currently uses unreliable measures. This study used data from a national survey of English grasslands to show that soil carbon stocks can be accurately predicted using simple measures of soil and climatic conditions. Two to three ...

  • EPA Issues One-Year Registration for Soil Fumigant Iodomethane

    EPA has approved a one-year registration of iodomethane (methyl iodide) under highly restrictive provisions governing its use. Iodomethane is an alternative to the ozone-depleting pesticide methyl bromide – reflecting the U.S. commitment to protecting the earth's ozone layer. The risk assessment process for iodomethane has been one of the most thorough analyses ever conducted on a new pesticide. ...

  • Save the date: 12 February - Webinar on Soil Biodiversity and Carbon

    The Convention on Biological Diversity (CBD), Ramar Convention and Wetlands International invite government-nominated representatives and all interested participants in the African region to participate in a webinar on biodiversity and soil carbon on 12 February 2015. With this capacity building workshop we aim to build knowledge and expand the understanding of policy and ...


    By Wetlands International

  • Will large amounts of soil carbon be released to the atmosphere if grasslands are converted to energy crops?

    Grasslands in the Conservation Reserve Program (CRP) in the United States may be increasingly converted to growing bioenergy grain crops. Questions abound regarding the fate of carbon sequestered in the soil during the CRP program by perennial grasses if the land is converted to grain crop production and the potential effectiveness of no-till production systems to conserve the sequestered soil ...

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