plant growth element Articles

  • Evaluation of elemental allelopathy in Acroptilon repens (L.) DC. (Russian Knapweed)

    Abstract  Although Acroptilon repens (L.) DC. (Russian knapweed) is known to concentrate zinc (Zn) in upper soil layers, the question of whether the elevated Zn has an allelopathic effect on restoration species has not been addressed. Experiments were conducted to investigate whether soils collected from within infestations of A. repens (high-Zn) inhibit the germination or growth and development ...


    By Springer

  • An empirical research on the interactions of China`s energy consumption, pollution emissions and economic growth

    Abstract: The negative effects of energy consumption and pollution have restrained Chinese economy from further rapid sustainable growth. Examining their relationship with economic growth can lay a solid foundation for the decision-making of energy conservation and pollution reduction and ensure the sustainable development of Chinese economy. Using panel data of 30 Chinese provinces from 2001 to ...


    By Inderscience Publishers

  • Extractability, plant yield and toxicity thresholds for boron in compost

    Boron (B) is a trace element essential to crop growth in small soil concentrations (0.2-1.5ppm), yet may produce plant toxicity symptoms readily as the amount in the soil solution increases over 2ppm. Boron is present in significant amounts in recycled materials such as municipal solid waste (MSW) and coal fly ash, and therefore composts containing these ingredients may potentially exceed ...


    By BioCycle Magazine

  • A review of the phosphorus content of dry cereal and legume crops of the world

    When food scarcity increases, instability in society increases. The majority of food consumed is from cereals and legumes. Phosphorus is essential for crop plant growth and soils are depleted as this element is removed from crop lands with harvested grains/seeds. To sustain yields, inputs of nutrients are required to balance losses. On global and continental/regional bases, we assembled nine ...


    By Inderscience Publishers

  • Tracheophytes contain conserved Orthologs of a Basic Helix-loop-helix transcription factor to modulate root hair specific genes

    Abstract Root Hair Specific (RHS) genes, which contain the root hair-specific cis-element (RHE) in their regulatory regions, function in root hair morphogenesis. Here, we demostrate that an Arabidopsis thaliana basic helix-loop-helix transcription factor, ROOT HAIR DEFECTVE SIX-LIKE 4 (RSL4), directly binds to the RHE in vitro and in vivo, up-regulates RHS genes, and stimulates root hair ...


    By H Smith Plastics LTD

  • Ecotoxicological responses of three ornamental herb species to cadmium

    Cadmium is one of the most toxic elements. The ideal vegetal cover should be ensured by the selection of appropriate plant species for successful phytoremediation. In the present study, the ecotoxicological effects of Cd on the following 3 ornamental herbs were investigated: Italian ryegrass (Lolium multiflorum Lam.), white clover (Trifolium repens L.), and alfalfa (Medicago sativa L.). Based ...


    By John Wiley & Sons, Ltd.

  • Distribution of 15N tracers applied to the canopy of a mature spruce-hemlock stand, Howland, Maine, USA

    In nitrogen (N) limited ecosystems fertilization by increases in N deposition may enhance plant growth and thus impact carbon (C) sequestration. However in many experimental N fertilization experiments that test this interaction, soils and not plants are the main fate of additional N. A key methodological feature in many N deposition-C sequestration experiments is the addition of N directly to ...


    By University of Maine

  • Potassium and winter hardiness

    The role of Potassium in metabolic processes such as protein synthesis and the movement of sugars within the plant is now well understood and recognised as crucial for maximising quality and yield. But it is now known Potassium also plays a significant role in helping crops resist disease and environmental stresses during winter dormancy and ensuring optimum supplies of Potassium to see crops ...


    By Ilex EnviroSciences Limited

  • Field of genes: Uncovering EGRINs (Environmental Gene Regulatory Influence Networks) in Rice that Function During High-temperature and Drought Stress

    Heat and drought stress greatly restrict crop productivity, but most of what we know about a plant’s response to these stresses comes from controlled laboratory studies. This factor, along with the complex nature of these responses, has hampered efforts to breed and engineer crops with improved stress tolerance. Plants respond to fluctuating environments through the altered expression of ...


    By H Smith Plastics LTD

  • Modulation of exogenous selenium in cadmium‐induced changes in antioxidative metabolism, cadmium uptake, and photosynthetic performance in the 2 tobacco genotypes differing in cadmium tolerance

    Hydroponic experiments were conducted using cadmium (Cd)–sensitive (cv Guiyan 1) and Cd‐tolerant (Yunyan 2) tobacco cultivars to evaluate cultivar differences in response to Cd toxicity in the presence of selenium (Se). The results showed that addition of 3 µM Se in 50 µM Cd solution markedly reduced Cd accumulation in plants, alleviated Cd‐induced growth inhibition, and increased nitrogen and ...


    By John Wiley & Sons, Ltd.

  • Compost Utilization goes Through the Roof

    Untitled Document Center for Green Roof Research at Penn State University uses compost in its media studies and plans to explore microbial communities. AT the Penn State ...


    By BioCycle Magazine

  • Evaluating Microbiology of Compost

    The fact that not all compost is created equal has both producers and growers looking for ways to successfully evaluate compost quality. Traditional compost analysis has focused on NPK and micronutrient concentrations in an effort to mirror fertilizer analysis. Compost, however, is much more complex than fertilizer and its most significant value to the grower may be far more than its mineral ...


    By BioCycle Magazine

  • Cultivating the Next Generation of Sustainability Leaders

    International corporate volunteerism gives future leaders real-life experience facing challenges in emerging markets and could create self-perpetuating sustainable businesses ntroduced by John Elkington two decades ago, the “triple bottom line” has helped shape the definition of sustainable business today. Giving equal importance to three indicators — ...


    By Ensia

  • Compost Users Forum: The Applied Thoughts Of A Compost Theorist

    WITHIN a 60-mile radius of my office here in central California, there are 1,000 dairies — each having an average of 2,000 cows. They generate over four million tons of manure annually, so we are pretty much in the manure business whether we want to be or not. Somebody has to manage this material and help the farmers utilize it properly, fulfilling its potential monetary value. That’s what we ...


    By BioCycle Magazine

  • The cloud isn`t just for rain anymore

    Precision agriculture has been a key enabling technology to achieve higher yields with lower cost and less environmental impact, while keeping the cost of food fairly stable Has global agricultural productivity increased or decreased in the last 25 years? It has, in fact, more than doubled since 1985. Next to advances in seed genetics, precision agriculture has been a key enabling ...

  • Arsenic in irrigated paddy soils

    Natural arsenic pollution of drinking water has been reported from over 70 countries world-wide, affecting an estimated 150 million people (Ravenscroft et. al., 2008). About 50 million of these people live in Bangladesh, 30 million in India and 33 million in six other countries of south and south-east Asia. It has recently been recognised that arsenic-contaminated groundwater used for irrigation ...

  • One Year Later · Persistent Herbicides in Compost

    ONE YEAR has passed since the Washington State University (WSU) composting facility and the Spokane Regional Compost Facility discovered traces of persistent herbicides in their composts. In Spokane, the source of contamination is a compound called clopyralid. Compost contamination at WSU initially involved the herbicide picloram, but clopyralid has since been detected in the compost also. In ...


  • California company closes the composting loop

    BEFORE we made our first ton of compost, we had already talked to farmers to determine what they needed in a soil amendment,” says Roger Van Der Wende, Vice President, Supermarket Division, Community Recycling & Resource Recovery, Inc. (Community) in Sun Valley, California. Considering the fastidious navigation the company has done to advance in a previously uncharted realm of resource ...


    By BioCycle Magazine

  • Development of Indonesian Fish Farming & Aquaculture Production

    Part 1.Fish Farms Market Overview in Indonesia Part 2.Reasons Why Fishery Industry Develops Fast in Indonesia Part 3.Fish Farm Types in Indonesian Part 4.Sustainable Development of the Fishery in Indonesia Fish Farms Market Overview in Indonesia Fish farming is the ...

  • In Business World

    In Business and BioCycle are holding their 7th Annual Conference on Renewable Energy From Organics Recycling, October 1-3, 2007 in Indianapolis, Indiana. The conference highlights renewable energy projects that cross a range of technologies and feedstock sources. Small and large-scale anaerobic digestion projects that incorporate animal manures, as well as food processing residuals, fats/ ...


    By BioCycle Magazine

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you