Effect of DCA (double cut alternate tapping system) on renew bark and TPD (tapped panel dryness) symptom with RRIM 600 clone

Chantuma Pisamai, Gohet Eric, Lacote Régis. 2015. Effect of DCA (double cut alternate tapping system) on renew bark and TPD (tapped panel dryness) symptom with RRIM 600 clone. In : Proceedings International Rubber Conference 2015: Productivity and quality towards a sustainable and profitable natural rubber sector. Le Quang Khoi (ed.). IRRDB, RRIV. Ho Chi Minh City : Agricultural Publishing House, 365-375. ISBN 978-604-60-2156-8 International Rubber Conference 2015, Ho Chi Minh City, Viet Nam, 2 Novembre 2015/3 Novembre 2015.

Résumé : The purpose of this study was to characterize affect of DCA (double cut alternate tapping system) on renew bark and TPD (tapped panel dryness) symptom with RRIM 600 clone. This expriment was set up in Chachoengsao Rubber Research Center since 1999. Experimental design was RCB comprising 4 replications with 6 treatments: I). S/2 d2, 2). S/3 d2 ET 2.5% 4/y, 3-5). S/2 d3 ET 2.5% 4, 6 and 8/y and 6). DCA ((2xS/2 d2 (t,t)). The 2"d phase focus on l l -l 5th tapping year. The results show yield of DCA and S/3 d2 ET 2.5% 4/y were 1,760 and 1,819 kg/ha/year or higher 12% and 16% than S/2 d2 consequence. However, S/2 d3 ET 2.5%, 4-8/y were the highest average yield 36-44% but yield in term of kg/tree/year and kg/ha/year were lower than the others tapping system 15%, according to less tapping days than 32 days in comparison with d2. Over a period of 15 years, compared to a single cut tapping system (S/2 d2) of equivalent intensity, DCA increased cumulative rubber production by 10%. DCA, S/2 d2 and S/3 d2 ET 2.5% 4/y also resulted in higher TPD rates 33-34% than S/2 d3 ET 2.5% 4, 6 and 8/y which occurrence 19-24%.

Classification Agris : F01 - Culture des plantes

Auteurs et affiliations

• Chantuma Pisamai, CIRAD-PERSYST-UPR Systèmes de pérennes (FRA)
• Gohet Eric, CIRAD-PERSYST-UPR Systèmes de pérennes (FRA) ORCID: 0000-0002-0379-0592
• Lacote Régis, CIRAD-PERSYST-UPR Systèmes de pérennes (THA) ORCID: 0000-0002-8184-5763

Source : Cirad-Agritrop (https://agritrop.cirad.fr/579209/)

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