Open AccessLatex 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
Author(s) -
Adou Bini Yao Christophe,
Okoma Koffi Mathurin,
Obouayéba Abba Pacôme,
Atsin Guy Jöel Olivier,
Ballo Espérence Kouadio,
Essehi Jean-Lopez,
Wahounou Polié Jean,
Soumahin Eric Francis,
Kouakou Tanoh Hilaire,
Samuel Obouayéba
Publication year - 2018
Publication title -
european scientific journal
Language(s) - English
Resource type - Journals
eISSN - 1857-7881
pISSN - 1857-7431
DOI - 10.19044/esj.2018.v14n3p385
Subject(s) - dryness , tapping , natural rubber , hevea brasiliensis , horticulture , bark (sound) , productivity , pulp and paper industry , elevator , toxicology , botany , biology , environmental science , materials science , engineering , composite material , mechanical engineering , ecology , macroeconomics , economics , immunology
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.y1) 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.