A Reader of Elementary Tropical Agriculture; Adapted to Farming in the Philippine Islands

A Reader of Elementary Tropical Agriculture; Adapted to Farming in the Philippine Islands

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 edition. Excerpt: ...throw up watery suckers from the root. If these are allowed to grow, they attract a large share of nutriment from the root at the expense of the fruitbearing power of the plant. Their removal, with one exception, is always in order. The exception is that if the main body of the plant is diseased, we can cut it down and renovate the tree with the vigorous sucker. 135. Pruning as a remedy for disease. Pruning is an admirable remedy for certain diseases that originate within the tissues of plants. Judicious and energetic use of the knife will sometimes stamp them out. The prunings of diseased plants should always be burned to prevent further spread of the disease. CHAPTER THIRTEEN PLANT DISEASES AND INSECT ENEMIES 136. Definition. For the farmer's purpose, any departure from the normal, that is, crop loss resulting from any causes other than violent physical disturbances, such as fire, flood, or typhoon, is to be considered as due to disease. Strictly speaking, the crop's injury incident to prolonged drouth or to excess of moisture comes under this head, but they carry their own suggestion of the remedy, and we irrigate, cultivate, or drain as the requirements of the case demand. Other diseases of less obvious origin, and often with protracted and varying life history, call, however, for extended study and explanation. 137. Classification. For convenience, and not on account of "sharply denned differences, we may classify all plant ailments other than those named above as follows: 1. Diseases caused by micro-organisms. 2. Diseases due to insect or animal enemies. 138. Micro-organisms. Micro-organisms are forms of animal or vegetable life, frequently so infinitely small, that thousands of their bodies are contained within the space of a cubic...show more

Product details

  • Paperback | 46 pages
  • 189 x 246 x 3mm | 100g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 123652618X
  • 9781236526182