The Cultivation of Hevea a Manual for the Planter
The Cultivation of Hevea a Manual for the Planter
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In our eReader you can find the full English version of the book. Read The Cultivation of Hevea a Manual for the Planter Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Cultivation of Hevea a Manual for the Planter
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The consequence is, that the production of latex ceases sooner or later, and the tree becomes stripped. The full spiral system has conse- 77 quently been practically abandoned in the Malay Penin- sula. The only case where this method is of value is when it is intended to kill trees in a plantation by tapping in order to thin them out. (See fig. 280).
FIGURE 2?. Sketch showing tapping systems.
V cut.
d. Full Herringbone.
2. Half spiral.
With this system the tapping- surface is divided into two h...alves only one of which is tapped. Accordingly 78 the cut covers half the surface, and leaves the other half to maintain the connection of the crown with the root. Often several cuts are made, one above the other, FIGURE 28. Sketch showing tapping systems.
e. Herringbone.
f. Two Half Herringbones.
and along the lower ends of the cut, a groove is made, ending in a drip -tin.
One advantage of the half spiral is, that the cut runs to one side, and that therefore the tapper does not need to change the position of his knife, hand or arm.
What to read after The Cultivation of Hevea a Manual for the Planter?
You can find similar books in the "Read Also" column, or choose other free books by P J S Pieter Johannes Samuel Cramer to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The consequence is, that the production of latex ceases sooner or later, and the tree becomes stripped. The full spiral system has conse- 77 quently been practically abandoned in the Malay Penin- sula. The only case where this method is of value is when it is intended to kill trees in a plantation by tapping in order to thin them out. (See fig. 280).
FIGURE 2?. Sketch showing tapping systems.
V cut.
d. Full Herringbone.
2. Half spiral.
With this system the tapping- surface is divided into two h...alves only one of which is tapped. Accordingly 78 the cut covers half the surface, and leaves the other half to maintain the connection of the crown with the root. Often several cuts are made, one above the other, FIGURE 28. Sketch showing tapping systems.
e. Herringbone.
f. Two Half Herringbones.
and along the lower ends of the cut, a groove is made, ending in a drip -tin.
One advantage of the half spiral is, that the cut runs to one side, and that therefore the tapper does not need to change the position of his knife, hand or arm.
What to read after The Cultivation of Hevea a Manual for the Planter?
You can find similar books in the "Read Also" column, or choose other free books by P J S Pieter Johannes Samuel Cramer to read onlineMoreLess
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