Agricultural practices in côte d’ivoire and apparition and development of tapping panel dryness in hevea brasiliensis muell. arg

Author: 
Okoma Koffi Mathurin, Dian Kouadio, Soumahin Eric Francis, Elabo Agniman Angéline, Doumbia Sékou, Obouayeba Samuel and KELI Zagbahi Jules

In rubber tree, Hevea brasiliensis, tapping panel dryness manifested by non-exudation of latex from panel after tapping, is a plant response to non-biotic stress. To identify agricultural practices that induce the stress favoring the occurrence and development of tapping panel dryness in rubber tree, in Côte d’Ivoire, a study was conducted in small-older plantations. A diagnostic survey of agricultural practices was made and the lengths of dry panel were measured for two years. Analysis of variance and principal component analysis of the lengths of dry panel in relation to agricultural practices were carried out. Results showed that the tapping panel dryness rate exceeds 30 % in small-older plantations. They also showed that agricultural practices contribute over 60 % to the occurrence and development of tapping panel dryness. These practices were summarized in three main factors: the sensitivity of the planted clone, the bad application of latex harvesting technology and the age of plantation. These agricultural practices that promote the appearance and development of tapping panel dryness are bad. They should be avoided to minimize the tapping panel dryness in rubber tree, Hevea brasiliensis.

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