Long-term effect of ethylene stimulation on the yield of rubber trees is linked to latex cell biochemistry

Lacote, Régis; Gabla, O.R.; Obouayeba, Samuel; Eschbach, Jean-Marie; Rivano, Franck; Dian, Kouadio; Gohet, Eric

doi:10.1016/j.fcr.2009.10.007

Cited by 75 publications

(83 citation statements)

References 7 publications

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“…However, the cumulative yield of T 5 was not the highest but comparable to that of T 1 , S/2 d2 tapping system. These results confirmed that tapping frequency is negatively correlated to the yield per tapping per tree and positively related to cumulative yield (Obouayeba et al, 2011;Lacote et al, 2014). Thanh et al (1996) reported that cumulative yield of d3 was only 93% of that obtained from d2 tapping system.…”

Section: Rubber Yield Performancesupporting

confidence: 75%

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

Zaw¹,

Sdoodee²,

Lacote³

2017

Aust J Crop Sci

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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: (T 1 ) S/2 d2 (no tapping in the rainy season); (T 2 ) S/2 2d3 (no tapping in the rainy season); (T 3 ) S/2 (RG) d2 (tapping with rainguard in the rainy season); (T 4 ) S/2 d3 ET2.5% Pa (1) 3/y (m) (tapping without rainguard in the rainy season); (T 5 ) 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 T 5 during the study period was comparable to that of T 1 , while its daily yield in gram per tapping per tree was 23% and 30% higher than that of T 1 and T 2 , respectively. Bark consumption of T 5 was 16% and 39% lower than that of T 1 and T 2, respectively. T 5 needed only 67% of tapper requirement by d2 frequency tapping. Tapping costs of T 5 were 17% lower than those of conventional tapping system, T 1. The study suggested that LFRTS with rainguard could be implemented to address the problems of the farmers in the area.Keywords: bark consumption; low frequency rubber tapping system; rainguard; tapping cost; tapper productivity; tapper requirement. Abbreviations: 2d3_ two tappings in three days; BO-2_ virgin bark at second basal panel; d2_ alternate tapping; d3_third daily tapping; ET_ethephon stimulation; LFRTS_ low frequency rubber tapping system; Pa_ panel application; RG_rainguard; S/2_ half spiral cut (length of tapping cut)

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Section: Rubber Yield Performancesupporting

confidence: 75%

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

Zaw¹,

Sdoodee²,

Lacote³

2017

Aust J Crop Sci

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“…Moreover, for Koffi (1995) and Gohet (1996), clones that do not respond favorably to stimulation, relative to others, may be considered to have certain intrinsic dispositions that allow them to respond. These provisions seem to be the availability of intrinsic energy (Lacote et al 2010) conferring on these clones the ability to activate their metabolism to the absence of hormonal stimulation. The metabolism of clones exhibiting such abilities can be considered as easily enabled ).…”

Section: Resultsmentioning

confidence: 99%

Latex Micro Diagnosis, Modern Management Tool of Rubber Plantations of Clones With Active or Rapid Metabolism IRCA 18, IRCA 130, PB 235, PB 260 and PB 330

Christophe

Mathurin

Pacôme

et al. 2018

ESJ

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The cultivated rubber clones are sensitive to latex harvesting regimes according to their laticiferous metabolism. Thus, in order to determine the best latex harvesting systems of clones with active or rapid metabolism (IRCA 18, IRCA 130, PB 235, PB 260 and PB 330), six latex harvesting technologies are applied to them in a bulk statistical device from Fisher to four rehearsals. The rubber is tapped in downward half spiral stimulated or not for nine years after the opening of the tapping panel. The agronomic parameters (production, vegetative growth), the tapping panel dryness and those of the latex micro diagnosis were evaluated. The results indicate that these clones independently of the latex harvesting system have good rubber productivity (2310 kg.ha -1 .y -1 ) with good radial vegetative growth (2.9 cm.y -1 ). Their trees show a wellbalanced physiological profile and an acceptable sensitivity to the tapping panel dryness (4.9%). However, the physiological index, the bark consumption and the sensitivity to the tapping panel dryness lead to retain the latex harvesting technologies " S/2 d3 6d/7 Pa1(1) ET2.5% 4/y and S/2 d4 6d/7 Pa1(1) ET2.5% 4/y " for the best. This index, favorably influencing the choice of technologies adapted to clones with active metabolism, contributes to the modern and efficient management of a rubber plantation.

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“…Aplikasi dilakukan terutama pada bulan-bulan produksi tinggi dan dihentikan pada saat gugur daun alami. Lacote et al (2010) menyimpulkan bahwa frekuensi aplikasi stimulan yang tinggi dalam jangka p a n j a n g d i k h awa t i r k a n m e n g g a n g g u metabolisme dalam biosintesis lateks. Efek lebih lanjut mengakibatkan kelelahan tanaman secara fisiologis sehingga terjadi KAS.…”

Section: Frekuensi Pengisian Gasunclassified

Strategi Peningkatan Produksi Lateks Secara Kontinu Dengan Teknologi Stimulan Gas Etilen Rigg-9

Rouf¹,

Nugrahani²,

Pamungkas³

et al. 2015

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AbstrakPenerapan teknologi penyadapan melalui penggunaan stimulan telah banyak dilakukan pada perkebunan karet. Ada dua jenis stimulan yang dapat dipilih, yaitu stimulan cair atau gas. Kedua jenis stimulan ini dapat meningkatkan produksi lateks. Bahan aktif stimulan cair adalah etefon (2-chloro ethyl phosphonic acid) yang akan menghasilkan gas etilen, sedangkan stimulan gas adalah gas etilen. Peningkatan produksi lateks dengan menggunakan stimulan cair lebih rendah dibandingkan stimulan gas. Penggunaan stimulan cair hanya dapat meningkatkan produksi lateks sekitar 30%, sedangkan stimulan gas dapat mencapai lebih dari 100% di atas kontrol (tanpa stimulan).Stimulan gas etilen RIGG-9 merupakan teknologi hasil penelitian dan pengembangan Balai Penelitian Getas dengan sebuah perusahaan mitra. Penelitian stimulan gas etilen RIGG-9 yang telah dilakukan pada Kebun Kahuripan dan Kebun Cimangsud PT. Wiriacakra. Hasil penelitian selama 3 tahun (tahun 2010-2012) menunjukkan bahwa terjadi peningkatan produksi yang kontinu. Rata-rata produksi karet kering per pohon per sadap pada tahun pertama menggunakan stimulan gas etilen RIGG-9 sekitar 101,8 gram/pohon/sadap (g/p/s); pada tahun kedua meningkat menjadi 137,9 g/p/s; dan pada tahun ketiga sudah mencapai 143,0 g/p/s. Hasil penelitian tersebut membuktikan bahwa aplikasi stimulan gas etilen tidak memberikan dampak negatif ber upa penurunan produksi apabila prosedur aplikasinya benar dan kesehatan tanaman dijaga. Selain diterapkan secara selektif pada tanaman yang potensial dan sehat, juga diperlukan strategi berupa penerapan sistem sadap yang tepat, prosedur pemasangan aplikator stimulan gas yang benar, dan pemenuhan pupuk sesuai kebutuhan tanaman.Kata kunci: peningkatan produksi lateks, kontinyu, stimulan gas etilen, strategi yang tepat. Abstract

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Long-term effect of ethylene stimulation on the yield of rubber trees is linked to latex cell biochemistry

Cited by 75 publications

References 7 publications

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

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

Latex Micro Diagnosis, Modern Management Tool of Rubber Plantations of Clones With Active or Rapid Metabolism IRCA 18, IRCA 130, PB 235, PB 260 and PB 330

Strategi Peningkatan Produksi Lateks Secara Kontinu Dengan Teknologi Stimulan Gas Etilen Rigg-9

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