Navigation Links
Scientists find that evergreen agriculture boosts crop yields
Date:11/1/2010

THE HAGUE (2 November 2010)A unique acacia known as a "fertilizer tree" has typically led to a doubling or tripling of maize yields in smallholder agriculture in Zambia and Malawi, according to evidence presented at a conference in the Hague today. The findings were central to the arguments of agroforestry experts at the conference, who urged decision makers to spread this technology more widely throughout the African nations most vulnerable to climate change and food shortages, and to think differently about more practical ways to solve the problems that are most pressing to smallholder farmers.

Speaking today at The Hague Conference on Agriculture, Food Security and Climate Change, Dr. Dennis Garrity, Director General of the World Agroforestry Centre, said that evergreen agricultureor the integration of fertilizer trees into crop and livestock-holding farmsis rapidly emerging as an affordable and accessible solution to improving production on Africa's farms.

"Doubling food production by mid-century, particularly in Africa, will require nonconventional approaches, particularly since so many of the continent's soils are depleted, and farmers are faced with a changing climate," Garrity said. "We need to reinvent agriculture in a sustainable and affordable way, so that it can reduce its emissions of greenhouse gases and be adapted to climate change."

Garrity spoke to leading agriculture and climate scientists, policymakers, development experts, and private sector representatives from around the world gathered at The Hague to develop a concrete action plan for linking agriculture-related investments, policies, and measures to transition agriculture to lower carbon-emitting, climate-resilient growth.

In a recent article in Food Security, Garrity and co-authors highlighted how evergreen agriculture has already provided benefits to several million farmers in Zambia, Malawi, Niger and Burkina Faso. Fertilizer trees draw nitrogen from the air and transfer it to the soil through their roots and leaf litter, replenishing exhausted soils with rich sources of organic nutrients. The trees bolster nutrient supply, increase food crop yields, and enhance the production of fodder, fuel and timber. These systems also provide additional income to farmers from tree products, while at the same time storing much greater amounts of carbon than other agricultural systems.

For example, farmers in Malawi have increased their maize yields by up to 280 percent when the crop is grown under a canopy of one particular fertilizing tree, Faidherbia albida. Unlike most other trees, Faidherbia sheds its leaves during the early rainy season and remains dormant during the crop-growing period. This makes it highly compatible with food crops because it does not compete with them for water, nutrients, or lightonly the bare branches of the tree's canopy spread overhead while crops of maize, sorghum, or millets grow to maturity below. The leaves and pods also provide a crucial source of fodder in the dry season for livestock when nearly all other plants have dried up. The trees may continue to provide these cost-free benefits for up to 70 to 100 years.

In Niger, there are now more than 4.8 million hectares of millet and sorghum being grown in agroforests that have up to 160 Faidherbia trees on each hectare.

The Intergovernmental Panel on Climate Change (IPCC) has already noted that transforming degraded agricultural lands into agroforestry has far greater potential to store carbon than any other managed land use change.

Researchers suggest that integrating agroforestry into farming systems on a massive scale would create a vital carbon bank. The IPCC estimates that a billion hectares of developing country farmland is suitable for conversion to carbon agroforestry projects.

A broad alliance is now emerging of governments, research institutions, and international and local development partners committed to expanding evergreen agriculture and agroforestry. The International Fund for Agricultural Development, the Alliance for a Green Revolution in Africa, the European Union, the Consultative Group on International Agricultural Research, and the UN Environment Programme are among those interested in developing partnerships to move the evergreen agriculture agenda forward.

"We are already working with 18 countries across the African continent to develop national plans for the accelerated implementation of evergreen agriculture," Garrity explained.

The next step is to further refine and adapt the technologies to a wider range of smallholder farming systems in diverse agricultural environments, so that millions more farmers can benefit now and for generations to come from such sustainable solutions to their food production challenges.

"Evergreen agriculture allows us to glimpse a future of more environmentally-sound farming where much of our annual food crop production occurs under a full canopy of trees," said Garrity.


'/>"/>

Contact: Megan Dold
mdold@burnesscommunications.com
301-280-5720
Burness Communications
Source:Eurekalert

Related biology news :

1. VIMS scientists help solve mystery of alien pod
2. Speed installation of system to monitor vital signs of global ocean, scientists urge
3. Media alert: Agronomists, crop and soil scientists to convene in Long Beach
4. Scientists describe new approach for identifying genetic markers for common diseases
5. Rictor protein offers scientists a new molecular target for cancer therapies
6. USDA scientists helping keep in-demand smoked salmon safe to eat
7. Scientists reveal the sex wars of the truffle grounds
8. Discovery may help scientists boost broccoli’s cancer-fighting power
9. Barrow scientists uncover clues on inflammation in central nervous system
10. Entire issue of scientific journal devoted to center headed by Scripps Research Scientists
11. Frontal lobe of the brain is key to automatic responses to various stimuli, say scientists
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/13/2017)... , March 13, 2017 Future of security: Biometric Face ... ... DERMALOGs Face Matching enables to match face pictures against ... basis to identify individuals. (PRNewsFoto/Dermalog Identification Systems) ... DERMALOG,s "Face Matching" is the fastest software for biometric Face Matching ...
(Date:3/6/2017)... 6, 2017 Mintigo , the ... announced Predictive Sales Coach TM , its new ... intelligence into Salesforce. This unique AI application will ... organizations with deep knowledge of their customers and ... engagement. Predictive Sales Coach extends Mintigo,s existing customer ...
(Date:3/1/2017)...  Aware, Inc. (NASDAQ: AWRE), a leading supplier of ... Moberg has resigned, effective March 3, 2017, as ... and Treasurer of Aware citing a desire to retire.  ... of the Board of Directors of Aware. ... and co-President, General Counsel has been named Chief Executive ...
Breaking Biology News(10 mins):
(Date:3/23/2017)... -- NetworkNewsWire Editorial Coverage  ... Cancer remains one of the ... care systems, in terms of costs and resources. However, as ... development of innovative and efficient therapies that demonstrate higher chances ... of cancer treatments, a growing number of patients receiving immuno-oncology ...
(Date:3/23/2017)... ... March 23, 2017 , ... Advanced Polymer Monitoring ... of Dr. Sigmund “Sig” Floyd as Vice President ? Global Business Development. Dr. ... activities. , “Dr. Floyd’s career has spanned 30 years in the chemicals and ...
(Date:3/22/2017)... SANTA MONICA, Calif. , March 22, 2017 ... Council (MassMEDIC) are proud to announce their extended partnership ... Week will be headlined by the 21 st ... UBM,s BIOMEDevice Boston, taking place May 3-4, 2017. ... with Advanced Medical Technology Association (ADVAMED) President and ...
(Date:3/22/2017)... York , March 22, 2017 ... largely fragmented, states a research report by Transparency Market ... Pfizer Inc., Amgen Inc., and AbbVie Inc., accounted for ... 2015. The prominent players in this market are focusing ... their product portfolio, which is likely to lead to ...
Breaking Biology Technology: