A recent study published in Nature Climate Change has suggested that the future global effects of climate change will impact the livelihoods of over 200,000 coastal farmers in Bangladesh as sea levels rise. Flooding of saltwater is already negatively impacting coastal residents in the country as soil conditions alter, causing farmers to either change from historic rice farming to aquaculture or to relocate further inland to avoid such salinity changes.
Using specialised carbon-fixing material from blue-green algae, scientists have successfully engineered crop plants to boost photosynthetic productivity and crop yields. This exciting development promises to increase the yield of important food crops such as cassava, wheat and cowpea.
Typhoon Mangkhut (local name: Ompong) recently swept across the northern island of Luzon, Philippines, severely affecting the country’s bread basket. According to the National Disaster Risk Reduction and Management Council, approximately 171,932 farmers have suffered as a consequence of the storm.
Reblogged from The New York Times
Climate change is expected to make insect pests hungrier, which could encourage farmers to use more pesticides.
Ever since humans learned to wrest food from soil, creatures like the corn earworm, the grain weevil and the bean fly have dined on our agricultural bounty. Worldwide, insect pests consume up to 20 percent of the plants that humans grow for food, and that amount will increase as global warming makes bugs hungrier, according to a study published Thursday in the journal Science.
Smallholder farmers provide the vast majority of the world’s food supply, and ‘small-scale farming’ is the largest occupation group of economically active people, 43% of which are women.
Approximately 2 billion of the world’s poorest live in households that depend on agriculture in some form for their livelihoods, whether this is for market or subsistence. The Food and Agriculture Organization (FAO) states that growth in agriculture in developing countries is on average almost 3 times more effective in reducing poverty (relative to non-agriculture GDP growth).
Many farmers who grow soybean and corn also integrate crop rotation strategies to avoid the continuous corn yield cost, but scientists from the US have given a new reason to use crop rotation. Evidence suggests that rotating crops increases yield and lowers greenhouse gas emissions compared to monoculture corn or soybean.
Researchers at the RIKEN Centre of Sustainable Resource Science (CSRS) in Japan have discovered a hormone linked to the stimulation of drought-resistant characteristics in plants.
Published in the journal Nature earlier this month, the study shows how the peptide CLE25 is synthesised in the roots of plants when under stress due to a lack of water in the soil, resulting in the closing of pores (stomata) in the leaf surfaces.