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  1. The old adage ‘You can’t fix a problem if you don’t know you have one’ underpins the basic science of diagnosing plant diseases and nutrient deficiencies. For years, farmers and scientists have worked together to identify a set of visual clues that can be used to determine diseases and nutrient...
     
  2. Cereal cropsare interchangeably calledgrain crops. In many publications and correspondence, they are simply called grains or cereals. As of 2012, the top 5 cereals in the world ranked on the basis of production tonnage are maize (corn), rice (paddy), wheat, barley and sorghum. These crops are...
     
  3. Herbs are herbaceous plants used to flavor foods and for home remedies. It is best to seed or transplant herbs during cooler months in the tropics. Flowers, as well as being pleasing ornamentals, serve to attract pollinators and beneficial insects. Flowers are also used as companion plants, to...
     
  4. Industrial crops provide oils, fiber, or chemicals from leaves, seeds, bark, or roots for income or on-farm use. Plants in our collection are used for edible oil, confection, forage, fiber, fuel oil, or as a pesticide.
     
  5. Root crops,tuber cropsandcorm cropsare special terms used to refer to specific types of farm crops collectively called root and tuber crops. The starchyroot and tuber crops, also calledroots and tubersandtuberous crops, are plants that are grown for their modified, thickened root or stem which...
     
  6. Biodiversity is declining steadily throughout the world [113]. The current rate of extinction is largely the result of direct and indirect human activities [95]. Building accurate knowledge of the identity and the geographic distribution of plants is essential for future biodiversity conservation...
     
  7. Insects and other pests can be a serious constraint to food production, especially where resources for pest management are scarce. For example, inEDN 133, we responded to a question about problems with tomato leaf miner (Tuta absoluta) in Nigeria. Heavy infestations of this pest alone can reduce...  
  8. Home gardens are found in many humid and sub-humid parts of the world. They are sometimes called backyard or kitchen gardens. These gardens have an established tradition and offer great potential for improving household food security and alleviating micronutrient deficiencies. Gardening can...
     
  9. The cultivation of fruit trees is one strategy that we feel can fight hunger on a long-term, sustainable basis. Though the importance of raising fruit trees has been underestimated by development communities, it ought to be a major element in any development scheme. Fruits and nuts, when eaten in...
     
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