Improvement of Productivity of the Moderate Metabolism Clone GT 1 of Hevea Brasiliensis Muell. Arg. by Early Upward Tapping in Côte d'Ivoire

Obouayeba Samuel; Soumahin Eric Francis; Lacote Regis; Essehi Jean Lopez; Gohet Eric; Obouayeba Abba Pacome

doi:doi:10.11648/j.ajbio.20210901.14

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Improvement of Productivity of the Moderate Metabolism Clone GT 1 of Hevea Brasiliensis Muell. Arg. by Early Upward Tapping in Côte d'Ivoire

Obouayeba Samuel, Soumahin Eric Francis, Lacote Regis, Essehi Jean Lopez, Gohet Eric, Obouayeba Abba Pacome

Published in American Journal of BioScience (Volume 9, Issue 1)

Received: 23 January 2021 Accepted: 1 February 2021 Published: 10 February 2021

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Abstract

The quest for greater return on investment at short time is a recurring concern of the rubber industry. Early reverse tapping could be an option to this concern. It is therefore to verify this hypothesis that five different stages of initiation of upward tapping, 6^th, 7^th, 8^th, 9^th year and the control in 10^th year, with application of 2.5 and 5% ethephon was conducted for eight years in the South-East (Bettié) and the Centre-West (Gagnoa) of Côte d'Ivoire. Irrespective of the ethephon concentration used, average yield obtained from upward tapping at 6^th year was 3012 ± 516 kg ha^-1 y^-1 against 2528 kg ha^-1 y^-1 in the control, where controlled upward tapping started at 10^th year with a productivity gain of 19%. The mean annual increase in circumference in the upward tapped trees at 6^th year, was 3.02 ± 0.18 cm y^-1 and statistically higher than that of the control treatment (2.40 cm y^-1). Physiological profiles improved during the experiment, regardless of site and of periods of upward tapping. Generally, the sensitivity to panel dryness in the control is more pronounced than that of early upward tapping. Our results suggest very early upward tapping at 6^th year after the 5 years of downward tapping, is the best period to harvest latex from the high tapping panel.

Published in	American Journal of BioScience (Volume 9, Issue 1)
DOI	10.11648/j.ajbio.20210901.14
Page(s)	25-33
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2021. Published by Science Publishing Group

Keywords

Early Upward Tapping, Rubber Productivity, Radial Vegetative Growth, Physiological Profile, Panel Dryness Sensitivity

References

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Obouayeba Samuel, Soumahin Eric Francis, Lacote Regis, Essehi Jean Lopez, Gohet Eric, et al. (2021). Improvement of Productivity of the Moderate Metabolism Clone GT 1 of Hevea Brasiliensis Muell. Arg. by Early Upward Tapping in Côte d'Ivoire. American Journal of BioScience, 9(1), 25-33. https://doi.org/10.11648/j.ajbio.20210901.14

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ACS Style

Obouayeba Samuel; Soumahin Eric Francis; Lacote Regis; Essehi Jean Lopez; Gohet Eric, et al. Improvement of Productivity of the Moderate Metabolism Clone GT 1 of Hevea Brasiliensis Muell. Arg. by Early Upward Tapping in Côte d'Ivoire. Am. J. BioScience 2021, 9(1), 25-33. doi: 10.11648/j.ajbio.20210901.14

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AMA Style

Obouayeba Samuel, Soumahin Eric Francis, Lacote Regis, Essehi Jean Lopez, Gohet Eric, et al. Improvement of Productivity of the Moderate Metabolism Clone GT 1 of Hevea Brasiliensis Muell. Arg. by Early Upward Tapping in Côte d'Ivoire. Am J BioScience. 2021;9(1):25-33. doi: 10.11648/j.ajbio.20210901.14

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@article{10.11648/j.ajbio.20210901.14,
  author = {Obouayeba Samuel and Soumahin Eric Francis and Lacote Regis and Essehi Jean Lopez and Gohet Eric and Obouayeba Abba Pacome},
  title = {Improvement of Productivity of the Moderate Metabolism Clone GT 1 of Hevea Brasiliensis Muell. Arg. by Early Upward Tapping in Côte d'Ivoire},
  journal = {American Journal of BioScience},
  volume = {9},
  number = {1},
  pages = {25-33},
  doi = {10.11648/j.ajbio.20210901.14},
  url = {https://doi.org/10.11648/j.ajbio.20210901.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajbio.20210901.14},
  abstract = {The quest for greater return on investment at short time is a recurring concern of the rubber industry. Early reverse tapping could be an option to this concern. It is therefore to verify this hypothesis that five different stages of initiation of upward tapping, 6th, 7th, 8th, 9th year and the control in 10th year, with application of 2.5 and 5% ethephon was conducted for eight years in the South-East (Bettié) and the Centre-West (Gagnoa) of Côte d'Ivoire. Irrespective of the ethephon concentration used, average yield obtained from upward tapping at 6th year was 3012 ± 516 kg ha-1 y-1 against 2528 kg ha-1 y-1 in the control, where controlled upward tapping started at 10th year with a productivity gain of 19%. The mean annual increase in circumference in the upward tapped trees at 6th year, was 3.02 ± 0.18 cm y-1 and statistically higher than that of the control treatment (2.40 cm y-1). Physiological profiles improved during the experiment, regardless of site and of periods of upward tapping. Generally, the sensitivity to panel dryness in the control is more pronounced than that of early upward tapping. Our results suggest very early upward tapping at 6th year after the 5 years of downward tapping, is the best period to harvest latex from the high tapping panel.},
 year = {2021}
}

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TY - JOUR
T1 - Improvement of Productivity of the Moderate Metabolism Clone GT 1 of Hevea Brasiliensis Muell. Arg. by Early Upward Tapping in Côte d'Ivoire
AU - Obouayeba Samuel
AU - Soumahin Eric Francis
AU - Lacote Regis
AU - Essehi Jean Lopez
AU - Gohet Eric
AU - Obouayeba Abba Pacome
Y1 - 2021/02/10
PY - 2021
N1 - https://doi.org/10.11648/j.ajbio.20210901.14
DO - 10.11648/j.ajbio.20210901.14
T2 - American Journal of BioScience
JF - American Journal of BioScience
JO - American Journal of BioScience
SP - 25
EP - 33
PB - Science Publishing Group
SN - 2330-0167
UR - https://doi.org/10.11648/j.ajbio.20210901.14
AB - The quest for greater return on investment at short time is a recurring concern of the rubber industry. Early reverse tapping could be an option to this concern. It is therefore to verify this hypothesis that five different stages of initiation of upward tapping, 6th, 7th, 8th, 9th year and the control in 10th year, with application of 2.5 and 5% ethephon was conducted for eight years in the South-East (Bettié) and the Centre-West (Gagnoa) of Côte d'Ivoire. Irrespective of the ethephon concentration used, average yield obtained from upward tapping at 6th year was 3012 ± 516 kg ha-1 y-1 against 2528 kg ha-1 y-1 in the control, where controlled upward tapping started at 10th year with a productivity gain of 19%. The mean annual increase in circumference in the upward tapped trees at 6th year, was 3.02 ± 0.18 cm y-1 and statistically higher than that of the control treatment (2.40 cm y-1). Physiological profiles improved during the experiment, regardless of site and of periods of upward tapping. Generally, the sensitivity to panel dryness in the control is more pronounced than that of early upward tapping. Our results suggest very early upward tapping at 6th year after the 5 years of downward tapping, is the best period to harvest latex from the high tapping panel.
VL - 9
IS - 1
ER -

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Author Information

Obouayeba Samuel

Centre National de Recherche Agronomique (CNRA), Bimbresso Research Station, Hevea Programme, Abidjan, C?te d’Ivoire
Soumahin Eric Francis

Laboratory of Plant Physiology and Pathology, Agroforestry Training and Research Unit, Jean Lorougnon Guédé University, Daloa, C?te d’Ivoire
Lacote Regis

Centre for International Cooperation in Agricultural Research for Development (CIRAD), Own research unit (PRU), Tree Crop-Based Systems, Montpellier, France
Essehi Jean Lopez

Centre National de Recherche Agronomique (CNRA), Bimbresso Research Station, Hevea Programme, Abidjan, C?te d’Ivoire
Gohet Eric

Centre for International Cooperation in Agricultural Research for Development (CIRAD), Own research unit (PRU), Tree Crop-Based Systems, Montpellier, France
Obouayeba Abba Pacome

Laboratory of Plant Physiology and Pathology, Agroforestry Training and Research Unit, Jean Lorougnon Guédé University, Daloa, C?te d’Ivoire

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APA Style

Obouayeba Samuel, Soumahin Eric Francis, Lacote Regis, Essehi Jean Lopez, Gohet Eric, et al. (2021). Improvement of Productivity of the Moderate Metabolism Clone GT 1 of Hevea Brasiliensis Muell. Arg. by Early Upward Tapping in Côte d'Ivoire. American Journal of BioScience, 9(1), 25-33. https://doi.org/10.11648/j.ajbio.20210901.14

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Obouayeba Samuel; Soumahin Eric Francis; Lacote Regis; Essehi Jean Lopez; Gohet Eric, et al. Improvement of Productivity of the Moderate Metabolism Clone GT 1 of Hevea Brasiliensis Muell. Arg. by Early Upward Tapping in Côte d'Ivoire. Am. J. BioScience 2021, 9(1), 25-33. doi: 10.11648/j.ajbio.20210901.14

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AMA Style

Obouayeba Samuel, Soumahin Eric Francis, Lacote Regis, Essehi Jean Lopez, Gohet Eric, et al. Improvement of Productivity of the Moderate Metabolism Clone GT 1 of Hevea Brasiliensis Muell. Arg. by Early Upward Tapping in Côte d'Ivoire. Am J BioScience. 2021;9(1):25-33. doi: 10.11648/j.ajbio.20210901.14

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@article{10.11648/j.ajbio.20210901.14,
  author = {Obouayeba Samuel and Soumahin Eric Francis and Lacote Regis and Essehi Jean Lopez and Gohet Eric and Obouayeba Abba Pacome},
  title = {Improvement of Productivity of the Moderate Metabolism Clone GT 1 of Hevea Brasiliensis Muell. Arg. by Early Upward Tapping in Côte d'Ivoire},
  journal = {American Journal of BioScience},
  volume = {9},
  number = {1},
  pages = {25-33},
  doi = {10.11648/j.ajbio.20210901.14},
  url = {https://doi.org/10.11648/j.ajbio.20210901.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajbio.20210901.14},
  abstract = {The quest for greater return on investment at short time is a recurring concern of the rubber industry. Early reverse tapping could be an option to this concern. It is therefore to verify this hypothesis that five different stages of initiation of upward tapping, 6th, 7th, 8th, 9th year and the control in 10th year, with application of 2.5 and 5% ethephon was conducted for eight years in the South-East (Bettié) and the Centre-West (Gagnoa) of Côte d'Ivoire. Irrespective of the ethephon concentration used, average yield obtained from upward tapping at 6th year was 3012 ± 516 kg ha-1 y-1 against 2528 kg ha-1 y-1 in the control, where controlled upward tapping started at 10th year with a productivity gain of 19%. The mean annual increase in circumference in the upward tapped trees at 6th year, was 3.02 ± 0.18 cm y-1 and statistically higher than that of the control treatment (2.40 cm y-1). Physiological profiles improved during the experiment, regardless of site and of periods of upward tapping. Generally, the sensitivity to panel dryness in the control is more pronounced than that of early upward tapping. Our results suggest very early upward tapping at 6th year after the 5 years of downward tapping, is the best period to harvest latex from the high tapping panel.},
 year = {2021}
}

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