Hevea Brasiliensis; Or Para Rubber, Its Botany, Cultivation, Chemistry and Diseases

Hevea Brasiliensis; Or Para Rubber, Its Botany, Cultivation, Chemistry and Diseases

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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. 1906 edition. Excerpt: ...in this island. Matale District. In the Matale District there are estates where an average yield of lb. of dry rubber per tree from 5,000 trees has been obtained in one month's tapping. The average circumference of these trees was 35 inches a yard from the ground. On another property a yield of 3lb. of rubber per tree has been obtained from 499 trees in seven months' tapping. Another estate, in the same district, has obtained an average yield of 3 lb. of dry rubber per tree from 311 trees in one year. The age of these trees varied from 10 to 15 years, and the trees varied in circumference from 30 to 70 inches at a yard from the ground. These trees were tapped on the full herring-bone system; the tapping area covered half the tree and extended from the base to a height of seven feet. The tapping was done very carefully, the distance of seven feet being worked through in 240 days of continuous tapping. The yield from these particular trees will probably be increased by a change in the method of tapping and tapping instruments during the current year. On a third Matale estate the Para rubber is interplanted among cacao; the cacao is planted 12 by 12 feet and the rubber through alternate lines of cacao 24 by 12 feet. By the V method of tapping a yield of 3 lb. of dry rubber from each of 10,000 trees is expected during the present year, the trees being 8 to 15 years old. On this See Jumelle I.e. t Seeligmann, Caoutchouc et lu Qutta Peroha, p 48. Photo by Colombo Apothecaries Co. Lent by M. Scowen. PARA RUBBER IN CEYLON. Mature Rubber And Tea; Holton Estate, Wattegama. Tapping 15 Year-old Trees. estate several encouraging experiments in tapping from 6 feet upwards to a height of 15 feet have been made, light ladders being used for the purpose....show more

Product details

  • Paperback | 80 pages
  • 189 x 246 x 4mm | 159g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • Illustrations, black and white
  • 1236575423
  • 9781236575425