For over 40 years, Earth Day has served as a call to action, mobilizing individuals and organizations around the world to address these challenges. This year Nourishing the Planet highlights agriculture -- often blamed as a driver of environmental problems -- as an emerging solution.
Agriculture is a source of food and income for the world's poor and a primary engine for economic growth. It also offers untapped potential for mitigating climate change and protecting biodiversity, and for lifting millions of people out of poverty.
This Earth Day, Nourishing the Planet offers 15 solutions to guide farmers, scientists, politicians, agribusinesses and aid agencies as they commit to promoting a healthier environment and a more food-secure future.
1. Guaranteeing the Right to Food. Guaranteeing the human right to adequate food -- now and for future generations -- requires that policymakers incorporate this right into food security laws and programs at the regional, national, and international level. Governments have a role in providing the public goods to support sustainable agriculture, including extension services, farmer-to-farmer transmission of knowledge, storage facilities, and infrastructure that links farmers to consumers.
2. Harnessing the Nutritional and Economic Potential of Vegetables. Micro-nutrient deficiencies, including lack of vitamin A, iodine, and iron, affect 1 billion people worldwide. Promoting indigenous vegetables that are rich in micro-nutrients could help reduce malnutrition. Locally adapted vegetable varieties are hardier and more dependable than staple crops, making them ideal for smallholder farmers. Research organizations like AVRDC/The World Vegetable Center are developing improved vegetable varieties, such as amaranth and African eggplant, and cultivating an appreciation for traditional foods among consumers.
3. Reducing Food Waste. Experts continue to emphasize increasing global food production, yet our money could be better spent on reducing food waste and post-harvest losses. Already, a number of low-input and regionally appropriate storage and preservation techniques are working to combat food waste around the world. In Pakistan, farmers cut their harvest losses by 70 percent by switching from jute bags and containers constructed with mud to more durable metal containers. And in West Africa, farmers have saved around 100,000 mangos by using solar dryers to dry the fruit after harvest.
4. Feeding Cities. The U.N. estimates that 70 percent of the world's people will live in cities by 2050, putting stress on available food. Urban agriculture projects are helping to improve food security, raise incomes, empower women, and improve urban environments. In sub-Saharan Africa, the Educational Concerns for Hunger Organization (ECHO) has helped city farmers build food gardens, using old tires to create crop beds. And community supported agriculture (CSA) programs in Cape Town, South Africa, are helping to raise incomes and provide produce for school meals.
5. Getting More Crop per Drop. Many small farmers lack access to a reliable source of water, and water supplies are drying up as extraction exceeds sustainable levels. Only 4 percent of sub-Saharan Africa's cultivated land is equipped for irrigation, and a majority of households depend on rainfall to water their crops -- which climate scientists predict will decline in coming decades. Efficient water management in agriculture can boost crop productivity for these farmers. By practicing conservation tillage, weeding regularly, and constructing vegetative barriers and earthen dams, farmers can harness rainfall more effectively.
6. Using Farmers' Knowledge in Research and Development. Agricultural research and development processes typically exclude smallholder farmers and their wealth of knowledge, leading to less-efficient agricultural technologies that go unused. Research efforts that involve smallholder farmers alongside agricultural scientists can help meet specific local needs, strengthen farmers' leadership abilities, and improve how research and education systems operate. In southern Ethiopia's Amaro district, a community-led body carried out an evaluation of key problems and promising solutions using democratic decision-making to determine what type of research should be funded.
7. Improving Soil Fertility. Africa's declining soil fertility may lead to an imminent famine; already, it is causing harvest productivity to decline 15-25 percent, and farmers expect harvests to drop by half in the next five years. Green manure/cover crops, including living trees, bushes, and vines, help restore soil quality and are an inexpensive and feasible solution to this problem. In the drought-prone Sahel region, the Dogon people of Mali are using an innovative, three-tiered system and are now harvesting three times the yield achieved in other parts of the Sahel.
8. Safeguarding Local Food Biodiversity. Over the past few decades, traditional African agriculture based on local diversity has given way to monoculture crops destined for export. Less-healthy imports are replacing traditional, nutritionally rich foods, devastating local economies and diets. Awareness-raising initiatives and efforts to improve the quality of production and marketing are adding value to and encouraging diversification and consumption of local products. In Ethiopia's Wukro and Wenchi villages, honey producers are training with Italian and Ethiopian beekeepers to process and sell their honey more efficiently, promote appreciation for local food, and compete with imported products.
9. Coping with Climate Change and Building Resilience. Global climate change, including higher temperatures and increased periods of drought, will negatively impact agriculture by reducing soil fertility and decreasing crop yields. Although agriculture is a major contributor to climate change, accounting for about one-third of global emissions, agricultural practices, such as agro-forestry and the re-generation of natural resources, can help mitigate climate change. In Niger, farmers have planted nearly 5-million hectares of trees that conserve water, prevent soil erosion, and sequester carbon, making their farms more productive and drought-resistant without damaging the environment.
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