000			01466nam a2200193Ia 4500
008			220216s9999 xx 000 0 und d
100			_aThomas M
245		0	_aDrain of resources in Hevea brasiliensis on ethephon application
260			_bPlacrosym XIII, 1998, Coimbatore, Tamil Nadu, India. Recent Advances in Plantation Crops Research, p256-262
520			_aApplication of ethephon on the bark of mature trees of Hevea brasiliensis is widely practiced to increase the rubber yield where the volume of latex harvested per tap per tree is enhanced considerably. As a result, the drain of carbohydrates and minerals alongwith the latex is increased in the trees applied with ethphon. An experiment was conducted in which ethephon was applied on virgin trees of clone RRII 105 and estimated the concentration of sucrose, Pi, Mg++, K+ and Cu++ in the latex. Concentration of sucrose in the latex was less in ethephon treated plants than control while Pi, Mg++, K+ and Cu++ were more in the latex. When the total drain of these components per tree was computed for the entire experimental period, the loss of sucrose, Pi, Mg++, K+ and Cu++ were 21, 400, 186, 68 and 67 per cent, respectively, more in ethephon treated plants than untreatd control.
650			_aEthephon application
650			_aHevea brasiliensis
700			_aAbraham J
700			_aGopalakrishnan J
700			_aJacob J
700			_aNair D B
700			_aSreelatha _BS
942			_cJS
999			_c57364 _d57364