What technologies could sustainably replace pesticides, without compromising on yield or quality? The Global Food Security (GFS) programme’s David O’Gorman reviews a recent GFS workshop on the topic.
What would happen if we could no longer use pesticides? Well, there would be significant yield losses, food price increases, greater food insecurity and potentially political unrest and instability. There may well be reduced ecological impacts, but with loss of yield would come expansion of agricultural land, with release of GHGs and loss of biodiversity.
We are heavily reliant on pesticides to maximise crop yields and put food on our tables. Even with the use of pesticides, a third of food (PDF) produced for human consumption is lost or wasted – what might the figure be with a dramatic increase in pre-harvest losses following reduced pesticide use?
Continue reading How would we cope with a post-pesticide world?
Can we tap into ecological defences to better protect crops? The University of Sheffield’s Will Buswell reports.
Crop pathogens are a substantial drain on world food production. Annually, an estimated 20% of global yields are lost to disease, but this figure belies far greater losses for specific food systems and the people whose stable existence is dependent upon them, particularly in developing countries.
For instance, rice is the staple crop for over half of the world’s population, yet almost 40% of yield is lost to disease each year.
Continue reading Priming plants for natural disease control
A natural virus could control devastating pest outbreaks and improve food security for thousands of farmers. In a special video diary, Ken Wilson reports on a long weekend in Zambia.
“We have arranged for you to meet the Vice President at 10am on Sunday. Is this OK?”. That was it, my trip to Zambia was definitely on and I had just a few hours to prepare for my field visit and meet one of the country’s top politicians who was leading their efforts to manage a food security crisis.
But as you can see in the video below (which you can also watch on YouTube, or in a shorter 03:50 video feature), this visit turned out to be rather different from the rest.
Continue reading Video blog: The hunt for African armyworm
The needs of food security require that food production be increased on a relatively fixed amount of land but in a sustainable way. How can this objective be achieved?
In particular how can we protect plants against pests and diseases in a sustainable way? Many consumer and environmentalists would like
Continue reading ‘Green’ pesticides and a greener revolution