Aug 28 (Reuters) - Researchers in the key corn-growing stateof Illinois are finding significant damage from rootworms infarm fields planted in a rotation with a genetically modifiedcorn that is supposed...
Abstrat: Yield improvements are critical to ensuring food security for a growing world population especially in view of the increasing potential for use of land in biofuel production. Efforts to sustain the impressive rate of past productivity gains, epitomized by such successes as the Green Revolution, are bound to rely on biotechnology innovations such as those responsible for the development of genetically engineered (GE) crops. Some argue that the use of biotechnology can substantially improve yields relative to the trajectory established by traditional breeding in the 20th century. Because U.S. adoption of GE varieties has been very strong since their introduction in the late 1990s, we investigated empirically whether and to what extent the GE technology has improved realized yields. We study this question for nonirrigated U.S. maize (Zea mays L.) and soybean [Glycine max (L.) Merr.] yields over 1964 through 2010, having controlled for local effects, weather, fertilization, and the preexisting (non-GE) crop improvement trend. For maize we find that GE varieties have increased realized yields, with a stronger gain in the Central Corn Belt (CCB). For soybeans, GE varieties appear to have slightly reduced yields. For both crops we find a strong trend in yield growth, which may have accelerated in recent years within the CCB. However, the combined effects of yield trend and GE adoption are predicted to fall short of the growth rate envisioned by industry projections.
Dar es Salaam — Thousands of farmers in western Kenya are successfully battling the invasion of a deadly parasitic weed called Striga, dubbed the 'violet vampire' because of its beautiful violet flowers.
WITH growers selecting new crop varieties based on yielding ability, grain quality and disease resistance, new Australian Hard (AH) wheat variety Wallup is shaping up to be one of the most reliable options for Victoria’s Wimmera and North...
Country: Kenya Organization: IRES Registration deadline: 13 May 2013 Starting date: 27 May 2013 Ending date: 30 May 2013 INTRODUCTION This training will offer a set of methods and techniques that use GIS and Remote Sensing for analysis and...
Grain breeder Cimmyt will use genetic mapping to develop heat-tolerant wheat for South Asia, in a project funded by the U.S. Department of Agriculture aimed at boosting the crop’s resilience to climate change.
AbstractRice brown spot (BS) is a chronic disease that affects millions of hectares of rice every growing season, grown by some of the most resource-poor farmers. Despite its widespread occurrence and impact, much still needs to be understood about BS. Reported yield losses in relative terms vary widely from 4 to 52 %. However, accurate, systematic estimates are lacking. BS is conventionally perceived as a secondary problem that reflects rice crops that experience physiological stresses, e.g. drought and poor soil fertility, rather than a true infectious disease. Much remains to be understood about the mechanisms leading to epidemics and crop losses. Quantitative and qualitative knowledge gaps exist in our understanding of the epidemiological processes, sources of resistance and biocontrol methods. In this review we identify several of these gaps, which if filled, could lead to a strong impact on the management of brown spot. We also use the architecture of a simulation model to position and prioritize these knowledge gaps, assess the epidemiological consequences of disease management options on BS monocyclic processes and explore the impact changing production situations on this important disease.
One of the most unique large-scale international climate change projects is underway in Africa. A 4,000 mile “wall of trees” is being constructed across the east-west axis of the continent as a defense against rapid, expanding desertification of the Sahara.
The case for genetically modified (GM) food is getting stronger because of its importance as a tool to feed a growing global population, according to the Government’s new chief scientific adviser. Sir Mark Walport, who is one month into his new job, said today that he will aim to offer ministers the best and most accurate advice on all aspects of science policy, including the introduction of GM crops.
“The issue is European regulation, which is that Europe grows remarkably little genetically modified crops so I don’t think this is something that is going to change overnight... But I think it is inexorably rising up the agenda again because as a technology it is showing its value more and more obviously in terms of the crops that are able to feed the world,” he said.
Public opposition to GM food, and the reluctance of supermarkets to stock it, has hindered the kind of wide-scale farming of genetically engineered crops seen in other parts of the world, notably North and South America. However, Sir Mark questioned whether the majority of the public are as opposed to the technology as some GM critics have argued. He also said GM crops should be considered on a case-by-case basis.
“For every genetic modification you have to ask: what plant, what gene and for what purpose? The case will be strong for some and not strong for others. Each case has to be decided on its merits,” Sir Mark said. “If it were possible for instance to develop a blight-resistant potato then that would be a valuable thing to do,” he said referring to a GM potato variety that is resistant to the fungal pest.
“I think the job of a scientific adviser is to set out the scientific case and that scientific case [for GM] it becoming stronger and stronger and stronger. But ultimately I’m very clear that my job is to advise on the science and it is then the politician’s job to decide how to use that. The final decision is a political decision,” Sir Mark said.
A two-year trial of a GM variety of aphid-resistant wheat is underway at Rothamsted Research in Harpenden, Hertfordshire. Sir Mark said that it is unfortunate that a large part of the trial’s costs is being spent on security to prevent the field being destroyed by anti-GM campaigners. “The rule of law is absolutely paramount and in a sense you can say that it is a tragedy to spend so much on the rule of law for something like this,” he said...
Maize Lethal Necrosis disease has affected farms in parts of the Rift Valley. Some farmers in parts of Nandi county have reported that maizeon their farms are turning yellow and drying up two months after they were planted.
Gap analysis results have been completed for CWR taxa related to 29 crops, including maps displaying distributions, patterns of richness, and areas worldwide where CWR are particularly in need of collecting for conservation.
Living in Costa Rica, it is readily apparent the effects that this disease has had on coffee producers this growing season. The next time you purchase your coffee, stop and think a bit about this situation as it affects a large area in Central America.
By Abigail Rumsey: The flowers might look pretty but Striga has affected millions of hectares of crops in Africa. Striga hermonthica, or witchweed, is the main weed affecting many cereals including rice, maize, sorghum and millet. It is responsible for more crop loss in Africa than any other individual species of weed. Striga is a hemi-parasitic weed; its roots latch onto the roots of its host (e.g. a crop plant such as rice) and take water and nutrients from the host plant.
Islamabad—Due to favourable climate conditions, sufficient availability of agricultural inputs and best management practices, bumper wheat crop production of 25 million tons is expected during the current year.
AgEcon Search is a free, open access repository of full-text scholarly literature in agricultural and applied economics, including:
Working papersConference papersJournal articles
AgEcon Search: Research in Agricultural and Applied Economics collects, indexes, and electronically distributes full text copies of scholarly research in the broadly defined field of agricultural economics including sub disciplines such as agribusiness, food supply, natural resource economics, environmental economics, policy issues, agricultural trade, and economic development.
The majority of items in AgEcon Search are working papers, conference papers, and journal articles, although other types such as books chapters and government documents are included.
AgEcon Search will serve as the permanent archive for this literature and encourages authors and organizations to use this electronic library as the storehouse for additional appropriate scholarly electronic works.
Sharing your scoops to your social media accounts is a must to distribute your curated content. Not only will it drive traffic and leads through your content, but it will help show your expertise with your followers.
How to integrate my topics' content to my website?
Integrating your curated content to your website or blog will allow you to increase your website visitors’ engagement, boost SEO and acquire new visitors. By redirecting your social media traffic to your website, Scoop.it will also help you generate more qualified traffic and leads from your curation work.
Distributing your curated content through a newsletter is a great way to nurture and engage your email subscribers will developing your traffic and visibility.
Creating engaging newsletters with your curated content is really easy.