Organic and low-input systems are proposed as ways to reduce the environmental impacts of agriculture. Previous studies have shown that yields of organic systems can be ∼19 to 25% lower than conventional systems. An intermediary, low-input system could be less damaging for the environment than conventional systems, while reducing yield losses in comparison with organic systems.
In this study, we performed a meta-analysis to compare low-input systems to conventional and organic systems. Our analysis is based on data of cropping system experiments conducted in Europe and North America, and focuses on two important crops, maize and soft winter wheat.
Pesticide use was greatly reduced for low-input systems as compared with conventional for the two crops (50% for maize, 70% for wheat on average). Mean mineral N use was also reduced by 36% for maize and 28% for wheat in low-input relative to conventional.
Maize yields in low-input systems were not different from those in conventional systems, and were higher than yields in organic systems (yield ratio of low-input vs. organic = 1.24). Wheat yields in low-input systems were lower than yields in conventional systems (yield ratio of low-input vs. conventional = 0.88), but were substantially higher than yields in organic systems (yield ratio of low input vs. organic = 1.43).
This is one of the first meta-analyses to assess performance in terms of pesticide use intensity, and yields, with clear evidence emerging that low-input systems can markedly reduce pesticide application, without strongly reducing crop yields.
The International Symposium on Biodiversity and Edible Wild Species will be held on 24-27 October 2016 in Antalya, Turkey and will be organized by the General Directorate of Agricultural Research and Policies in collaboration with the Biodiversity for Food and
…a commission ordered that the land of the academy be transitioned for the destruction of educational buildings and living, agricultural fields, in order to establish the new development and construction of multi-level residential buildings.
According to a new research paper from the Quaker UN Office, those seeking positive policy change around seeds should look to progress in the “access to medicines” problem for inspiration. The paper identifies several similarities in context and recommends priority
In most cases, seeing a bug on your plate at a restaurant will prompt a return of the plate, a refund and a one-star review of the establishment. Yes, there's nothing wrong with that — your carbonara would be much better without the ants — but there are cultures around the world where eating insects isn't frowned upon. Rather, it's a delicacy.
And there are a lot of options to go through — 1,900 documented insect species are deemed edible. They might not be a staple in most American diets, but there are some nutritional properties that could make at least some bugs enticing enough to try.
"Most food, if we trace it back far enough, began as a seed. And the business of supplying those seeds to farmers has been transformed over the past half-century. Small-town companies have given way to global giants. A new round of industry consolidation is now underway. Multibillion-dollar mergers are in progress, or under discussion, that could put more than half of global seed sales in the hands of three companies."
"Esri Canada pays tribute to Dr. Roger Tomlinson, known as the 'Father of GIS'. Dr. Tomlinson passed away on Feb. 7, 2014, leaving a remarkable legacy that laid the foundation for modern digital mapping and transformed the field of geography."
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