crop circle Articles

  • Active sensor reflectance measurements of corn nitrogen status and yield potential

    Active sensor reflectance assessments of corn (Zea mays L.) canopy N status are advocated to direct variable N applications and improve N use efficiency (NUE). Our goals were to determine: (i) growth stage and (ii) sensor vegetation index with greatest sensitivity in assessing N status and grain yield. Variable crop N was generated by supplying N at different amounts and times in three field ...

  • AutoTerrain - Worlds best boom stability

    The AutoTerrain works and reacts on both boom movements and twisting forces on the boom. This allows the system to be proactive and react on the cause more than on the symptom. AutoTerrain works with 5 ultrasonic sensors and three gyro sensors. Ultrasonic sensors are located at a given distance on the boom and measure the height of the crops multiple times per second. The gyro sensors measure the ...


    By Hardi International A/S

  • Evaluating multiple indices from a canopy reflectance sensor to estimate corn n requirements

    With the increasing cost of fertilizer N, there is a renewed emphasis on developing new technologies for quantifying in-season N requirements for corn (Zea mays L.). The objectives of this research are (i) to evaluate different vegetative indices derived from an active reflectance sensor in estimating in-season N requirements for corn, and (ii) to consider the influence of the N:Corn price ratio ...

  • How to grow more food with less water

    Scientists and farmers collaborate on a quest for more efficient irrigation This story was co-published with Civil Eats, a daily news source for critical thought about the American food system. From reading the weather to choosing a ...


    By Ensia

  • Keyhole Gardens; Positive Impact on Food Security

    World hunger is a constant problem. It has been one of the most widely discussed topics in recent years. Rapidly increasing global population, limited natural resources, and climatic changes, has resulted in the need for a sustainable increase in food production. Scientists, governments, and organizations across the world are working together to bring innovations and good farming practices which ...


    By Agrivi Ltd

  • Seeing Green: Saving Forests or Food Prices?

    A growing population and rapid development will put a strain on land used to grow food over the next century. But if reforestation is used to avoid climate change it will create further strain, says a new MIT study. Written by Vicki Ekstrom.You can read the original new in MIT ...

  • 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

  • Rake In Greater Capacity And Higher Hay Quality

    It’s been said that the steel-toothed dump rake was first introduced in the 1860s. Of course, the process back then was to rake hay into piles, which were then pitched onto a wagon for transport to a haystack or the barn loft. To make windrows for the balers that came later, the operator simply spaced the “dumps” equally so they lined up in the field. The irony is that until ...


    By Vermeer

  • Can We Prevent A Food Breakdown?

    Food & Water Security: Protecting our Most Precious Resources will be a major issue discussed at GLOBE 2014, taking place in Vancouver Canada march 26-28. This article by Lester R. Brown, reprinted here with the kind permission of the author, puts the issue of water and food security ...


    By GLOBE SERIES

  • Can We Prevent A Food Breakdown?

    By Lester R. Brown As food supplies have tightened, a new geopolitics of food has emerged—a world in which the global competition for land and water is intensifying and each country is fending for itself. We cannot claim that we are unaware of the trends that are undermining our food supply and thus our civilization. We know what we need ...


    By Earth Policy Institute

  • 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

  • The complex nature of GMOs calls for a new conversation

    An honest discussion of genetically modified organisms must move beyond narrow concepts of human health to the wider social and environmental impacts of engineered crops. The GMO debate is one from which I’ve kept a purposeful distance. For one thing, it’s an issue that has already garnered more than its fair share of attention. For another, when you consider that many ...


    By Ensia

  • Green catering tips

    It's that time of the year again - party time. Whether it's St Patrick's Day, Easter, birthdays, Christmas, weddings, Thanksgiving, Halloween or Hanukkah, we all enjoy letting our hair down and having fun with friends and family! And with these events, come the mountains of munch-ables - tasty treats of every shape, colour and ingredient. But how green is our spinach really, and should we be ...


    By green24

  • If Our Planet Had a Say, Here’s Where Future Roads Would Go

    A new global ‘roadmap’ shows where to put roads for maximum benefit and least cost to the Earth. “The best thing you could do for the Amazon is to blow up all the roads.” These might sound like the words of an eco-terrorist, but it’s actually a direct quote from ...


    By Ensia

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