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Preliminary yield potential comparison on 1/2S d/3 and 1/2S d/4 tapping systems of some Hevea clones in Cambodia

Mak S., Hav S., Lacote R.. 2007. In : Natural rubber industry: R and D achievements and challenges : International Rubber Conference 2007, Siem Reap, Cambodia, 12-13 November 2007. Phnom Penh : CRRI, p. 142-150. International Rubber Conference, 2007-11-12/2007-11-13, Siem Reap (Cambodge).

The experiment on Preliminary Yield Potential Comparison on ½ S d/3 and d/4 Tapping Systems of Some Hevea Clones in Cambodia was on farm research at Chup Rubber Research Station of Cambodian Rubber Research Institute (CRRI). The objective of the experiment was to investigate the preliminary yield potential comparison of the tapping system ½ S d/3 7d/7 and ½ S d/4 7dl7based on frequency of ethephon stimulation. The result for first year, revealed that clone IRCA 111 and PB 330 produced high yield in ½ S d/4 7d/7. ET 2.5%. Pa.4/y. Clone GT1 produced high yield ½ S d/3 7d/7. ET 2.5%. Pa.8/y. Clone IRCA 230 produced high yield in ½ S d/4 7d/7. ET 2.5%. Pa.12/y in Cambodian condition.

Mots-clés : hévéa; cambodge

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