Preliminary report on a clonal trial Hevea brasiliensis in Guthrie estate Peninsular Malaysia

Leong T. T., . and P'ng T. C ., . Preliminary report on a clonal trial Hevea brasiliensis in Guthrie estate Peninsular Malaysia. pp. 346-354. ISSN 0126-575X

A clonal trial was conducted in Nov. 1974 in Sengkang Estate a wind prone coastal area. Three years of recordings showed that among the 15 clones 5 clones namely PB 235 RRIM 703 RRIM 712 PB 260 and NAB 17 yield more than control clone RRIM 600. In the first year of tapping high incidence of dryness was observed in PB 260 (15 percent) and PB 252 (7 percent). The remaining clones recorded less than 5.0 percent. At the end of the second year sharp increase in dryness was noted in PB 235 while PB 260 and PB 252 continued to show high dryness incidence. The incidence of dryness for clone RRIM 712 was less than 10 percent after the third year of tapping. Growth-wise PB 235 recorded 22 percent better growth than RRIM 600 during the immature phase but showed 46 percent poorer growth than RRIM 600 after three years tapping. This clone did not succumb to any wind damage incidence while clone RRIC 6 suffered heavy loss

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Abstract

A clonal trial was conducted in Nov. 1974 in Sengkang Estate a wind prone coastal area. Three years of recordings showed that among the 15 clones 5 clones namely PB 235 RRIM 703 RRIM 712 PB 260 and NAB 17 yield more than control clone RRIM 600. In the first year of tapping high incidence of dryness was observed in PB 260 (15 percent) and PB 252 (7 percent). The remaining clones recorded less than 5.0 percent. At the end of the second year sharp increase in dryness was noted in PB 235 while PB 260 and PB 252 continued to show high dryness incidence. The incidence of dryness for clone RRIM 712 was less than 10 percent after the third year of tapping. Growth-wise PB 235 recorded 22 percent better growth than RRIM 600 during the immature phase but showed 46 percent poorer growth than RRIM 600 after three years tapping. This clone did not succumb to any wind damage incidence while clone RRIC 6 suffered heavy loss

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Item Type:	Article
Additional Information:	7 tables. Summary (En)
AGROVOC Term:	HEVEA BRASILIENSIS
AGROVOC Term:	PRUEBAS
AGROVOC Term:	CLONES
AGROVOC Term:	MALASIA PENINSULAR
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:53
URI:	http://webagris.upm.edu.my/id/eprint/18256

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