000			02406 a2200337 4500
008			230420b |||||||| |||| 00| 0 eng d
022			_a24570591
041			_aEn
044			_aCIV
090			_bDG/A/1406
100			_aKOUAKOU, N'Guessan Kan Pulcherie
100			_aDIARRASSOUBA, Moussa
100			_aESSEHI, Jean Lopez
100			_aOBOUAYEBA, Samuel
110			_aCentre National de Recherche Agronomique
110			_bCote d'Ivoire
245			_aEffect of early upward tapping on rubber productivity of clone PB 260 of the high metebolic activity class
260			_bJournal of Experimental Agriculture International
260			_cAvr 2022
302			_ap. 25-35
362			_a2022
388			_a20-04-2023
520			_aIn order to evaluate the effect of early upward tapping on rubber productivity of rubber trees and to determine its proportion relative to downward tapping, a study was conducted at SAPH Divo on the PB 260 clone of the fast metabolic activity class. The experimental set-up was a Fisher block with seven treatments and three replications. Tapping was carried out in d3 with 6 stimulations. Three upward tapping times at 6, 7 and 8 years, each coupled with two concentrations of the stimulating paste 2.5 and 5% of Ethephon and a downwardly tapped control stimulated with 5% of Ethephon were tested. The data collected were for rubber production, isodiametric growth, tapping panel dryness susceptibility and tree physiological profile. The results showed that the different treatments tapped in upward at 6, 7 and 8 years of age significantly improved the productivity of the PB 260 clone relative to the control by downward for nine years. All treatments combined, productivity (4723 kg.ha-1.yr-1) and radial vegetative growth (3.8 cm.yr-1) were good. The gain in rubber productivity of the early upward tapping compared to the downward tapping was 42%. The tapping panel dryness rate was low at 2.6% and the physiological profile of the trees was well balanced. Our results suggest that PB 260, and therefore metabolically active clones, can be tapped in early upward tapping, especially at 6 years of age.
650			_2AGROVOC _gCote d'Ivoire
650			_gHevea brasiliensis Muell Arg
650			_gProduction
650			_gClone
650			_gPlant
760			_b44 _w6
856			_uhttps://journaljeai.com/index.php/JEAI/article/view/1945/3896
999			_c4979 _d4979