Sentences with phrase «of superweeds»

That is one of the reasons that farmers are worried by a new generation of superweeds that has developed resistance to the herbicide glyphosate, the active ingredient in Monsanto's Roundup.

The emergence of superweeds also raises questions about justifications for genetically engineered crops

There have been no tests whatsoever on the much more important issues of long - term soil pollution, transgene flow (carrying contamination to neighbouring fields), the very difficult problem of superweeds, or on the environmental impacts if crop yield profiteering were maximised.

Not exact matches

Also, instead of controlling pests and weeds, GMOs have led to the emergence of superpests and superweeds.

There is evidence from Canada and Argentina that initially yields increased with GM and pesticide use fell.However, Charles Benbrook, an independent US scientist formerly of the US Department of Agriculture, carried out a series of systematic studies that showed that over a five - year period, yields began to fall and pesticide use markedly increased to counter the proliferation of volunteers and superweeds.

Many experts do fear the great homogenisation of nature, a world taken over by a few mongrel and ubiquitous species — brown rats and house sparrows, superweeds and cultivated crops.

By Carey Gillam (Reuters)- Farmers in important crop - growing states should consider the environmentally unfriendly practice of deeply tilling fields to fight a growing problem with invasive «superweeds» that resist herbicides and choke crop yields, agricultural experts said this week.

Moore warns that we are facing seemingly insurmountable problems: rising energy costs, escalating competition for arable land for agrofuels, the grow of invasive species, the herbicide / glyphosate - resistant superweeds effect, aquifer depletion, and end of cheap water as global warming melts glaciers, and the weakening effectiveness of fertilizers on yield growth.

The rampant use of agricultural chemicals is creating superweeds that laugh in the face of chemicals... which is bad news for crop productivity and food security.

In the case of plants, one of those consequences is superweeds.

The rampant use of agricultural chemicals is creating superweeds that laugh in the face of chemicals; which is bad news for crop productivity and food security... but may have a silver lining.