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Journal of Experimental Agriculture International

Journal of Experimental Agriculture International, ..,Vol.: 14, Issue.: 5

 

Original Research Article

 

Effect of the Stimulating Paste Conservation Period and Economic Benefit of Ethrel-Palm Oil Mixture in Rubber Tree Plantations in South-Eastern Côte d’Ivoire

 

 

S. Obouayeba1*, E. F. Soumahin2, A. P. Obouayeba3, C. B. Y. Adou4, J. L. Essehi5, G. J. O. Atsin1 and M. K. Okoma6

1Centre National de Recherches Agronomiques (CNRA-Bimbresso), Station de Recherche de Bimbresso, 01 BP 1536, Abidjan 01, Côte d’Ivoire.

2Université Jean Lorougnon Guédé, UFR Agroforesterie, Laboratoire de Physiologie et de Pathologie Végétale, BP 150 Daloa, Côte d’Ivoire.

3Université Félix Houphouët Boigny-Cocody, UFR Biosciences, Laboratoire de Pharmacodynamie Biochimique-22 BP 582 Abidjan 22, Côte d’Ivoire.

4Université Nangui Abrogoua, UFR des Sciences de la Nature, Laboratoire de Biologie et Amélioration Végétale, 01 BP 801 Abidjan 01, Côte d’Ivoire.

5Université Félix Houphouët Boigny-Cocody, Laboratoire de Pédologie et de Géologie Appliquée, 22 BP 582 Abidjan 22, Côte d’Ivoire. 

6Centre National de Recherches Agronomiques (CNRA-LCB), Laboratoire Central de Biotechnologie-01 BP 1740 Abidjan 01, Côte d’Ivoire.

 

Abstracts

 

To maintain and increase sustainable productivity and natural rubber yield, the hormonal stimulation management of rubber yield should be controlled from operation centers. A study was conducted to determine the type of prepared stimulant paste and the maximum efficiency period of this paste in southeastern Côte d’Ivoire, during two years from 2012 to 2014. The study was conducted on the clone GT 1, according to single tree plot design of 15 treatments of 30 replicate trees per treatment, corresponding to different conservation periods of the prepared stimulant paste. Two stimulant products namely Ethrel mixed with palm oil and Almephon (ready-to-use), have been stored at ambient temperature and left for cool. The prepared stimulant paste was kept for 0, 3, 7, 14, 21, 28, 42 and 56 days. The results indicated that rubber yield, radial vegetative growth, physiological profile and health of rubber trees haven’t been affected by both conservation of the stimulant paste and different conservation periods. However the prepared stimulant paste could be kept up to 56 days, at ambient temperature as well as in cold, without losing their efficiency. These important results help predict the management of hormonal stimulation of rubber yield, without electrical power, from centers which will ensure distribution to different plantations. Moreover, the stimulant paste Ethrel-mixed with palm oil, substantially cheaper and using the palm oil, an important local and profitable product to the bark of Hevea brasiliensis, would be the best choice.

 

Keywords :

Hevea brasiliensis; hormonal stimulations; conservation periods; rubber yield; Côte d’Ivoire.

 

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