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global action plan for agricultural diversification

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From over half a million plant species on the planet, we currently rely on just four crops (wheat, rice, maize and soybean) for more than three-quarters of our food supply. These `major’ crops are grown in a limited number of exporting countries, usually as monocultures, and are
highly dependent on inputs such as fertiliser and irrigation. Over 7 billion people depend on the productivity of these major crops not just for their direct food needs but increasingly as raw materials for livestock and aquaculture feeds and bioenergy systems.
A global population approaching 9 billion people, living in a hotter world with scarce water and energy resources represent a `Perfect Storm’ for humanity. In these circumstances, the major crops alone may not be able to meet the world’s food and nutritional requirements. Even if crop yields can meet the food demands of a growing population, they may not provide
adequate nutrition. The double-burden of over and under-nutrition (Hidden Hunger) is a major concern. Nutrient-poor and energy-rich diets are linked with lack of dietary diversity

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