ធនធាន ដាក់ស្លាក: Cultivated
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The aims of this book is to show just how rewarding our green inheritance is to mankind-to demonstrate the wonder and worth of plants, and their great potential, to explain why they cannot take any more punishment, and to point out how those that remain can be saved.
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This text was written to give attention to the scientific, technological, and economic foundations of world crop production. The sciences dealing with plants and the technology and economics of crop production and marketing have become irrevocably entwined. This text was planned for use primarily...
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19 មករា 1976 Worldwide, more than 3,000 plant species have been used as food, only 300 of which are now widely grown, and only 12 of which furnish nearly 90 percent of the world's food. These 12 include the grains: rice, wheat, maize (corn), sorghums, millets, rye, and barley, and potatoes, sweet potatoes,...