agriculture imaging Articles

  • Estimation of the increase in deforestation due to agricultural and pastoral activities in the Brazilian Western Amazon: an approach based on the relationship between production and productivity

    This paper presents and discusses the evaluation results of the increase in deforestation verified in the period of 1970 to 1990 in the Cruzeiro du Sul area, Acre State, in the Brazilian Western Amazon, based on an analysis of the relationship between the production and the productivity of the agricultural and pastoral (A&P) activities. The analysis suggests a deforestation increase owing to ...


    By Inderscience Publishers

  • Spatial and temporal changes at Tuzla (Palas) Lake in Turkey

    Saline lakes are widespread throughout the arid and semi-arid regions of the world and have considerable ecological importance. They are also very vulnerable to climatic changes or changes in their hydrological regimes. Most saline lakes of Turkey are close to the verge of extinction due to natural and anthropogenic impacts. This study analyzes the spatial and temporal changes at a relatively ...


    By IWA Publishing

  • 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 ...

  • Learning from the Terminator debacle

    Monsanto's 1999 decision not to acquire "sterile seed technology", otherwise known as the "Terminator", was in response to widespread pressure. The technology's commercial potential was "uncertain", and the company's image and share price were taking a beating. Potential international suitors risked being scared off. Few people anywhere could find any redeeming ...


    By Inderscience Publishers

  • 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 ...

  • Sentera Launches Disruptive Technology with Quad-Rotor Omni UAV

    Sentera Launches Disruptive Technology: Omni UAV Sentera, LLC brings game-changing aerial data-capture capabilities to the industry with the revolutionary Omni™ Quad-Rotor Unmanned Aerial Vehicle (UAV). The Omni naturally partners with a gimbaled Sentera Double 4K Sensor, creating an easy-to-use, precise ...


    By Sentera, LLC

  • Corn and soybean mapping in the united states using modis time-series data sets

    Monitoring and mapping of U.S. croplands has long been a primary goal of many users of earth observation satellite data. The advantages of using low spatial and high temporal resolution data are (i) increased ability to monitor the phenological change of crop plants, and (ii) the possibility of generating consistent large area crop cover maps. This study investigates the potential of 500-m MODIS ...

  • Many Countries Reaching Diminishing Returns in Fertilizer Use

    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 was not until the ...


    By Earth Policy Institute

  • Rising Temperature, Rising Food Prices

    Agriculture as it exists today developed over 11,000 years of rather remarkable climate stability. It has evolved to maximize production within that climate system. Now, suddenly, the climate is changing. With each passing year, the agricultural system is becoming more out of sync with the climate system. In generations past, when there was an extreme weather event, such as a monsoon failure in ...


    By Earth Policy Institute

  • Presence and persistence of wastewater pathogen Escherichia coli O157:H7 in hydroponic reactors of treatment wetland species

    Treatment wetlands (TWs) efficiently remove many pollutants including a several log order reduction of pathogens from influent to effluent; however, there is evidence to suggest that pathogen cells are sequestered in a subsurface wetland and may remain viable months after inoculation. Escherichia coli is a common pathogen in domestic and agricultural wastewater and the O157:H7 strain causes ...


    By IWA Publishing

  • Regional-scale assessment of soil salinity in the Red river valley using multi-year MODIS EVI and NDVI

    Received for publication April 15, 2009. The ability to inventory and map soil salinity at regional scales remains a significant challenge to scientists concerned with the salinization of agricultural soils throughout the world. Previous attempts to use satellite or aerial imagery to assess soil salinity have found limited success in part because of the inability of methods to isolate the effects ...

  • Data Highlight: Arab Grain Imports Rising Rapidly

    The Arab countries in the Middle East and North Africa make up only 5 percent of the world’s population, yet they take in more than 20 percent of the world’s grain exports. Imports to the region have jumped from 30 million tons of grain in 1990 to nearly 70 million tons in 2011. Now imported grain accounts for nearly 60 percent of regional grain consumption. With water scarce, arable ...


    By Earth Policy Institute

  • Losing Soil

    In 1938, Walter Lowdermilk, a senior official in the Soil Conservation Service of the U.S. Department of Agriculture, traveled abroad to look at lands that had been cultivated for thousands of years, seeking to learn how these older civilizations had coped with soil erosion. He found that some had managed their land well, maintaining its fertility over long stretches of history, and were ...


    By Earth Policy Institute

  • Heat and Drought Ravage U.S. Crop Prospects—Global Stocks Suffer

    September estimates from the U.S. Department of Agriculture (USDA) show 2012 U.S. corn yields at 123 bushels per acre, down by a fourth from the 2009 high of 165 bushels per acre. Yields are the lowest since 1995 and well below the average of the last 30 years. The summer heat and drought also hit U.S. soybean yields, which are down 20 ...


    By Earth Policy Institute

  • Can the World Feed China?

    By Lester R. Brown Overnight, China has become a leading world grain importer, set to buy a staggering 22 million tons in the 2013–14 trade year, according to the latest U.S. Department of Agriculture projections. As recently as 2006—just eight years ago—China had a grain surplus and was exporting 10 million tons. What caused this dramatic shift? It wasn’t until 20 years ...


    By Earth Policy Institute

  • Turning abandoned rice fields into mangroves

    What do you do when mangroves fail to naturally recolonise abandoned rice fields in one of the most precious mangrove deltas of the world? Pieter van Eijk reports on a recent mission to Western Africa that paves the way for large-scale mangrove recovery through a so-called ‘ecological restoration’ approach. ...


    By Wetlands International

  • The organic farm and restaurant `O Fogar do Santiso` in Spain is composting on-site with Big Hanna composter

    'O Fogar do Santiso' is an organic farm and restaurant located approximately 15 km south from Santiago de Compostela in the Galicia region in northern Spain. In the autumn of 2013 a Big Hanna composter model T240 was installed to compost the organic waste on-site.  ...


    By Susteco AB

  • Pacific fisheries need tech to track climate impact

    Climate change could benefit some Pacific fisheries, but tracking the success of adaptation needs effective monitoring, says Johann Bell. Climate change could derail plans by Pacific Island countries and territories (PICTs) to use ...


    By SciDev.Net

  • Science’s role in growing diverse, nutritious food

    Can science meet the demand for more diverse and nutritious food? Jan Piotrowski investigates. The riots that swept Africa in 2007 and 2008 in response to the spiralling costs of staple crops brought the effects of food shortages into sharp focus. Images of unrest circled the globe, and the consequent instability brought to the forefront of political debate a question that had ...


    By SciDev.Net

  • Getting seed to smallholders needs a business approach

    A locally owned, alternative model of supplying affordable seed is working for Africa’s framers, says Joe DeVries. Smallholder farmers in Africa — mostly women — wage silent battles against the elements and other forces beyond their control to feed ...


    By SciDev.Net

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