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History
Crop diversity
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Crop diversity or crop biodiversity is the variety and variability of crops, plants used in agriculture, including their genetic and phenotypic characteristics. It is a subset of a specific element of agricultural biodiversity. Over the past 50 years, there has been a major decline in two components of crop diversity; genetic diversity within each crop and the number of species commonly grown.
Within-crop diversity: maize cobs of differing colours
Within-crop diversity: maize cobs of differing colours
Biodiverse agroecosystem: traditional potato harvesting high in the Andes, Manco Kapac Province, Bolivia, 2012
Biodiverse agroecosystem: traditional potato harvesting high in the Andes, Manco Kapac Province, Bolivia, 2012
Loss of low-diversity crop to a single disease: the Great Famine, caused by the oomycete Phytophthora infestans. Starvation followed, as illustrated b
Loss of low-diversity crop to a single disease: the Great Famine, caused by the oomycete Phytophthora infestans. Starvation followed, as illustrated by James Mahony, 1847
Wheat stem rust is evolving new, virulent strains, threatening many low-diversity cultivars.
Wheat stem rust is evolving new, virulent strains, threatening many low-diversity cultivars.
Crop
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A crop is a plant that can be grown and harvested extensively for profit or subsistence. In other words, a crop is a plant or plant product that is grown for a specific purpose such as food, fibre, or fuel.
Domesticated plants
Domesticated plants
Crops drying in a home in Punjab, Pakistan
Crops drying in a home in Punjab, Pakistan