crop counting Articles

  • Cheap chemicals entice caterpillar-eating wasps to crops

    It may be a win-win situation: treating seeds with commercially available growth promoters before planting could have the added benefit of attracting parasitic wasps that feed on caterpillar pests, suggests a study. The protective effect of these cheap, commercially available chemicals, known as ‘plant strengtheners’, can help protect young ...


    By SciDev.Net

  • Determination of public health hazard potential of wastewater reuse in crop production

    The potential health hazard due to the utilisation of wastewater for vegetable cultivation in the agricultural fields of Titagarh was assessed. The mean concentrations of Pb, Ni and Cu in the irrigation water and the mean Cd content in soil were above the recommended levels. The mean Pb, Zn, Cd, Cr and Ni contents of the vegetables were found to be above the Indian safety limits. The faecal ...


    By Inderscience Publishers

  • Estimating ground cover of field crops using medium-resolution multispectral satellite imagery

    Remote sensing is useful for estimating plant canopy characteristics, such as leaf area index (LAI) and ground cover (GC). When the source of remote sensing data is medium-resolution satellite imagery, plant canopy characteristics can be estimated for numerous fields within an agricultural region. In this study, a procedure was developed to estimate GC of field crops from medium-resolution ...

  • Effect of AgraGel T-400 on tomato crops, U. of Valparaiso, Chile - Case Study

    Introduction At present, a great part of vegetable production in Chile is dedicated to industrial agronomy and one of the most important products is the tomato crop for industrial processing. Chile has a capacity of 180,000 tons of tomatoes per year, which is equivalent to 12,000 hectares of crop land. Among canned products tomato paste represents 38%. This is an important employment ...

  • Estimation of aeromycoflora in jute fields

    An air survey of jute fields for two seasons in West Bengal, India, revealed that the total colony forming units (CFUs) varied with time, showing peaks (231 and 483 CFUs, respectively) during harvesting of the crop. The effect of temperature as well as relative humidity is probably not so significant. However, the total rainfall does count. The CFUs are inversely proportional to the total ...


    By Springer

  • The Difficulty of Defining Adaptation Finance

    While working on tracking adaptation finance for our Adaptation Finance Accountability Initiative project, we often get the question “What is adaptation finance?” or “What counts as adaptation finance?” To our embarrassment, we ...

  • Light and moisture competition effects on biomass of red clover underseeded to winter wheat

    Red clover (Trifolium pratense L.) use as an underseeded cover crop in winter cereals has declined due to inability of growers to consistently establish uniform stands. The objective of this study was to assess the effect of light and soil moisture competition on underseeded red clover establishment and end of season dry matter production. Field trials were conducted at multiple locations in 2005 ...

  • Changes in genetic diversity of U.S. flue-cured tobacco germplasm over seven decades of cultivar development

    Plant breeding methodologies have been applied to flue-cured tobacco (Nicotiana tabacum L.) for approximately seven decades. As has been observed in several other crops, stringent quality requirements have resulted in use of conservative breeding strategies in the development of new cultivars. The impact of breeding practices on genetic diversity within U.S. flue-cured tobacco germplasm has not ...

  • Diversity of arbuscular mycorrhizal fungal species in soils of cultivated soybean fields

    Mycorrhizae are presumably important contributors to plant growth in most ecosystems. Our objective in this study was to evaluate the population diversity of arbuscular mycorrhizal (AM) fungi in Clarion (well drained) and Webster (poorly drained) soils of four Iowa soybean [Glycine max (L.) Merr.] fields. These soils normally occur together on the landscape, with Clarion in the upland and Webster ...

  • Could food shortages bring down civilization?

    One of the toughest things for people to do is to anticipate sudden change. Typically we project the future by extrapolating from trends in the past. Much of the time this approach works well. But sometimes it fails spectacularly, and people are simply blindsided by events such as today’s economic crisis. For most of us, the idea that civilization itself could disintegrate probably seems ...


    By Earth Policy Institute

  • Creating a Sustainable Food Future: Interim Findings - A menu of solutions to sustainably feed more than 9 billion people by 2050

    The world’s agricultural system faces a great balancing act. To meet different human needs, by 2050 it must simultaneously produce far more food for a population expected to reach about 9.6 billion, provide economic opportunities for the hundreds of millions of rural poor who depend on agriculture for their livelihoods, and reduce environmental impacts, including ecosystem degradation and ...

  • Can bats reduce nut farmers’ pesticide use?

    Ecologist Katherine Ingram is on a quest to quantify the economic value of insect-eating bats in walnut groves. For the past three years, Katherine Ingram has had a most unusual summer job: catching bats and studying their droppings to see what they eat. A doctoral student in ecology at the University of California, Davis, Ingram is exploring the role bats can play as winged ...


    By Ensia

  • Why Are Electric Substations Attracting Nuisance Birds and How Can We Stop Them?

    See how liquid bird repellent helped eliminate pest birds around electric substations in this article by BirdBuffer LLC. Several years ago, Pacific Gas & Electric engaged in an endeavor to find a better solution to keep birds out of their substations in California. An article written by Kellie Collins, Steve Yonge, and Ron Critchlow of the San Francisco Pacific Gas and ...


    By Avian Enterprises, LLC

  • Food sustainability: Key resources

    From contentious hunger estimates to trends in agriculture, Zareen Pervez Bharucha outlines a range of resources. Hunger, malnutrition and food insecurity The website of the Food and Agriculture Organization (FAO) of the United Nations is a key resource and offers access to several reports on hunger and ...


    By SciDev.Net

  • Shrinking forests: The many costs

    In early December 2004, Philippine President Gloria Macapagal Arroyo 'ordered the military and police to crack down on illegal logging, after flash floods and landslides, triggered by rampant deforestation, killed nearly 340 people,' according to news reports. Fifteen years earlier, in 1989, the government of Thailand announced a nationwide ban on tree cutting following severe flooding and the ...


    By Earth Policy Institute

  • Munchinator reduces trash to compost-like product

    The contraption looks a bit like a sophisticated high school science project as it rocks back and forth, with steam escaping and a slight rumble reverberating in the large room. The Munchinator is at work. A team of representatives from Carson City-based Ecologico Logic Inc. brought a prototype of their machine from their ...


    By Eco Sphere Sciences, Inc.

  • Expertise and equipment: key components in San Diego county compost site’s success

    Despite readily-available evidence to the contrary, many municipalities cling to the belief that implementing a compost program is costly, time consuming and offers no real benefit to the community. As a result, they either shy away from undertaking a composting effort entirely or — in a sort of self-fulfilling prophecy — grudgingly implement a bare-bones program. North San Diego County ...


  • What’s Happening to the Birds?

    Following in Rachel Carson’s footsteps, a new generation of scientists investigates a new generation of pesticides. Christy Morrissey is driving her white pickup truck along Canada’s endless prairie highway, windows open, listening for birds. She points to the scatter of ponds glinting in the landscape, nestled among fields of canola that stretch as far as the eye ...


    By Ensia

  • Energy`s `face of the future`

    With his slow smile, trademark black cowboy hat and soft-spoken manner, Evan Chrapko is very much a modern rural Albertan. He's completely at home in the muck and mire of a farm, but equally at ease in a boardroom or at a black-tie-and-champagne reception. Evan and his brother, Shane, part of a family that grew up on an organic farm in eastern Alberta, are also a face of the Green Future. Evan ...


    By Himark bioGas Inc

  • Urban farming is booming, but what does it really yield?

    City-based agriculture produces 15 to 20 percent of food globally. In the U.S., its benefits go far beyond nutrition. This story was produced in collaboration with the Food & Environment Reporting Network, a non-profit investigative news organization. ...


    By Ensia

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