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C14.1. Eroded soil.
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C14.2. Weeding rice seedlings by hand (Taiwan). |
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| Water resources |
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| C14.3. Trickle irrigation reduces water loss to evaporation (strawberries). . |
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C14.4. Boy irrigating rice by hand (Bangladesh). |
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| C14.5. Hand irrigating cabbage (Philippines). |
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Air pollution |
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| C14.6. Marginal and interveinal chlorosis and necrosis on grape leaves caused by sulfur dioxide. |
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C14.7. Marginal and interveinal necrosis on grape leaves caused by hydrogen fluoride emitted from an aluminum-processing plant. |
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| C14.8. Forest decline of red spruce. A, Red spruce mortality, Crawford Notch, White Mountain National Forest, New Hampshire. B, Dead red spruce, Santanoni Peak, Adirondack Park, New York. |
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C14.9. Genetically based variation in sensitivity to ozone in white pine.
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| Food crops |
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C14.10. Yam (Dioscorea species) storage in Nigeria. Note how the yams are spaced for drying and up off the ground. (African yam is a different plant from sweet potato, which originated in the Western Hemisphere.)
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C14.11. Quinoa (Chenopodium quinoa), a grain crop in Central and South America.
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| C14.12. Amaranthus species produce a high-protein seed and grow well in poor soils with little water. |
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C14.13. Taro (Colocasia esculenta), also called dasheen (large leaves near the ground), growing at the edge of a cacao plantation. |
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Climate change and energy
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| C14.14. Woman gathering firewood in Taiwan. |
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| Cacao |
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| C14.15. Black pod rot of cacao (Phytophthora species), showing healthy and diseased pods on the same tree. |
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C14.16. Fruiting bodies of the witches' broom fungus (Crinipellis perniciosa) on a cacao branch and fruit. |
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| Cassava |
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C14.17. Symptoms of cassava mosaic disease.
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C14.18. Cassava roots infected by Cassava brown streak virus. |
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| Biodiversity |
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| C14.19. Polyculture: mixed cropping (seven different crops, including banana, cassava, maize, peanut, squash, and others). |
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C14.20. Diversity of beans grown by small farmers in Latin America.
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