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Performances of low frequency rubber tapping system with rainguard in high rainfall area in Myanmar

Zar Ni Zaw, Sdoodee S., Lacote R.. 2017. Australian Journal of Crop Science, 11 (11) : p. 1451-1456.

In Myanmar, natural rubber (Hevea brasiliensis) is mainly grown in the southern part of the country, where the rainfall is too high leading to suspension of tapping in the rainy season and intensive tapping after the rainy season. Rubber farmers face problems of uneven distribution of tapping days, low tapper productivity, high tapping cost, and shorter economical lifespan of the trees. Hence, a study was carried out to address the problems by conducting an on-farm experiment to assess performances of low frequency rubber tapping system (LFRTS) with rainguard in the area. Five treatments: (T1) S/2 d2 (no tapping in the rainy season); (T2) S/2 2d3 (no tapping in the rainy season); (T3) S/2 (RG) d2 (tapping with rainguard in the rainy season); (T4) S/2 d3 ET2.5% Pa (1) 3/y (m) (tapping without rainguard in the rainy season); (T5) S/2 (RG) d3 ET2.5% Pa (1) 3/y (m) (tapping with rainguard in the rainy season) were evaluated. The cumulative yield in kilogram per tree of T5 during the study period was comparable to that of T1, while its daily yield in gram per tapping per tree was 23% and 30% higher than that of T1 and T2, respectively. Bark consumption of T5 was 16% and 39% lower than that of T1 and T2, respectively. T5 needed only 67% of tapper requirement by d2 frequency tapping. Tapping costs of T5 were 17% lower than those of conventional tapping system, T1. The study suggested that LFRTS with rainguard could be implemented to address the problems of the farmers in the area. (Résumé d'auteur)

Mots-clés : coût de production; productivité; rendement; saison humide; pluviométrie; extraction; récolte; hevea brasiliensis; myanmar

Thématique : Culture des plantes; Systèmes et modes de culture; Météorologie et climatologie

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