Open AccessEffect of Late Upward Tapping on the Productivity of the Metabolically Active Hevea brasiliensis Clone PB 260 in Southwestern Cote d'Ivoire
Author(s) -
Kouakou N’guessan Kan Pulchérie,
Moro Affia Perpétue,
Diarrassouba Moussa,
Lehi Irénée Malydie,
Konan Djézou,
Koffi Antoine,
Kouakou Tanoh Hilaire,
Samuel Obouayéba
Publication year - 2021
Publication title -
annual research and review in biology
Language(s) - English
Resource type - Journals
ISSN - 2347-565X
DOI - 10.9734/arrb/2021/v36i1030440
Subject(s) - tapping , hevea brasiliensis , natural rubber , productivity , biology , cote d ivoire , horticulture , randomized block design , mathematics , botany , zoology , chemistry , humanities , engineering , mechanical engineering , philosophy , organic chemistry , economics , macroeconomics
In order to evaluate the improvement of rubber productivity of rubber trees by late upward tapping. A study was conducted at SCASO (Société Civile Agricole du Sud-Ouest) on the PB 260 clone of the active metabolic class. The experimental set-up is a Fisher block design with eight treatments and three replications. The treatments compared were bled in reverse in the eleventh year of harvest, in quarter spiral every 3, 4, 5 and 6 days, with stimulation frequencies of 6, 8, 10, 12 and 13 times a year. The parameters measured were rubber production, isodiametric growth, sensitivity to dry notching of trees and physiological profile. The results show that the different latex harvesting technologies improve the rubber productivity of PB 260 (5469 kg.ha-1.yr-1) with a low dry-nut rate (1.2%) and satisfactory radial vegetative growth (3.9cm.yr-1). The physiological profile of the trees is balanced, but the treatments significantly influenced the different parameters except sucrose. Trees bled in S/4U d3 gave better results due to their high yield with an acceptable dry notch rate. Late reverse tapping is therefore a good latex harvesting technology for improving rubber productivity after down tapping.