Climate change is affecting crop yields and reducing global food supplies

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Posted by admin | Posted in Agri Knowledge, Climate Change, Food Security | Posted on 10-07-2019

Farm land near Holly Bluff, Miss., covered with backwater flooding, May 23, 2019. AP Photo/Rogelio V. Solis

Deepak Ray, University of Minnesota

Farmers are used to dealing with weather, but climate change is making it harder by altering temperature and rainfall patterns, as in this year’s unusually cool and wet spring in the central U.S. In a recently published study, I worked with other scientists to see whether climate change was measurably affecting crop productivity and global food security.

To analyze these questions, a team of researchers led by the University of Minnesota’s Institute on the Environment spent four years collecting information on crop productivity from around the world. We focused on the top 10 global crops that provide the bulk of consumable food calories: Maize (corn), rice, wheat, soybeans, oil palm, sugarcane, barley, rapeseed (canola), cassava and sorghum. Roughly 83 percent of consumable food calories come from just these 10 sources. Other than cassava and oil palm, all are important U.S. crops. Read the rest of this entry »

Synchronizing food production can have disastrous effects

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Posted by admin | Posted in Agri Knowledge, Climate Change, Food Security | Posted on 03-05-2019

Global synchronization of food production negatively impacts food security. Shutterstock

Zia Mehrabi, University of British Columbia and Navin Ramankutty, University of British Columbia

Crop failures are an important cause of food price spikes, conflict and food insecurity. The likelihood of local crop failures being catastrophic at the global level is exacerbated when they happen at the same time — that is, when our agricultural systems become more synchronized.

In a paper in Nature Ecology and Evolution, we show that while some crops such as maize and soybean have become less synchronized in recent decades (a seemingly good news story), the synchronization of production between crops increased overall. This has, in turn, destabilized our total global calorie supply.

Read the rest of this entry »

World hunger has risen for three straight years, and climate change is a cause

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Posted by admin | Posted in Agri Knowledge, Agri Sci, Climate Change, Food Security | Posted on 07-11-2018

A man walks through a greenhouse in northeastern Uganda where sustainable agriculture
techniques such as drought-resistant crops and tree planting are taught, Oct. 19, 2017.
AP Photo/Adelle Kalakouti

Jessica Eise, Purdue University and Kenneth Foster, Purdue University

Leer en español.

World hunger has risen for a third consecutive year, according to the United Nations’ annual food security report. The total number of people who face chronic food deprivation has increased by 15 million since 2016. Some 821 million people now face food insecurity, raising numbers to the same level as almost a decade ago.

The situation is worsening in South America, Central Asia and most regions of Africa, the report shows. It also spotlights a troubling rise in anemia among women of reproductive age. One in 3 women worldwide are affected, with health and developmental consequences for them and their children. Read the rest of this entry »

Why developing countries should boost the ways of small-scale farming

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Posted by admin | Posted in Agri Extension, Agri Knowledge, Climate Change, Food Security | Posted on 02-09-2018

A diversity of seeds on sale in Nanyuki market, Kenya. K Dekeyser

Rachel Wynberg, University of Cape Town and Laura Pereira, Stellenbosch University

Industrial agriculture – farming that involves the intensive production of livestock, poultry, fish and crops – is one of the most environmentally destructive forms of land use. It depends on mechanisation and on inputs like synthetic fertiliser and harmful pesticides and herbicides and has led to widespread contamination of soil and water. It also relies on just a few major crops like wheat, maize, soybean and rice, the seeds of which are owned by a mere handful of companies.

A different approach to agriculture is sorely needed. This should, ideally, deliver household food security, ensure sustainable livelihoods and produce quality nutrition in a rapidly changing climate.

Developing countries that are industrialising at a pace are uniquely placed to avoid developing a dependency on one type of technological innovation at the expense of others. This is what is known as technological lock-in, with industrial agriculture being one form of lock-in. Such countries are also well placed to establish alternative ways to grow food that maximise livelihoods and sustainable food production. Read the rest of this entry »

Sustainable Development Goals

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Posted by admin | Posted in Climate Change, United Nations | Posted on 07-07-2016

sdg1

In 2015, 193 countries agreed on 17 ambitious,
universal Sustainable Development Goals (SDGs)
as part of the broader 2030 Agenda for Sustainable Development.