Effect of planting density on growth and yield productivity of Hevea brasiliensis Muell. Arg. clone PB 235

Boko A.M.C., . and Dian K., . and Gnagne Y.M., . and Ake S., . and Obouayeba S., . Effect of planting density on growth and yield productivity of Hevea brasiliensis Muell. Arg. clone PB 235. pp. 257-270. ISSN 1511-1768

Clone PB 235 is high yielding and vigorous but highly sensitive to tapping panel dryness andwind damage in Africa. The planting density for panel opening at six years after planting was studied since 1989 in south western C´te d Ivoire to determine the influence of environmental parameters in reducing the incidence of tapping panel dryness. The study showed that the numberof tappable trees was acceptable and had not varied much with the density of planting. There were also no link between density of planting and the occurrence of tapping panel dryness and wind damage. Bole growth and yield were strongly influenced by planting density yet their interactions were in opposing modes indicating the antagonism of the bole growth yield factors. The optimum planting density was determined at 650 trees/ha. In spite of the high yield noted the physiological status was in equilibrium indicating the effective tapping system practised. This tapping system resulted in a low rate of panel dryness. These results confirm the influence of age at opening of tapping on bole growth and yield especially the opening for tapping of clone PB 235 at six years after planting.

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Abstract

Clone PB 235 is high yielding and vigorous but highly sensitive to tapping panel dryness andwind damage in Africa. The planting density for panel opening at six years after planting was studied since 1989 in south western C´te d Ivoire to determine the influence of environmental parameters in reducing the incidence of tapping panel dryness. The study showed that the numberof tappable trees was acceptable and had not varied much with the density of planting. There were also no link between density of planting and the occurrence of tapping panel dryness and wind damage. Bole growth and yield were strongly influenced by planting density yet their interactions were in opposing modes indicating the antagonism of the bole growth yield factors. The optimum planting density was determined at 650 trees/ha. In spite of the high yield noted the physiological status was in equilibrium indicating the effective tapping system practised. This tapping system resulted in a low rate of panel dryness. These results confirm the influence of age at opening of tapping on bole growth and yield especially the opening for tapping of clone PB 235 at six years after planting.

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Item Type:	Article
AGROVOC Term:	Planting density
AGROVOC Term:	Hevea brasiliensis
AGROVOC Term:	Tapping
AGROVOC Term:	Wind damage
AGROVOC Term:	High yielding breeds
AGROVOC Term:	Growth rate
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/23122

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