Balasimha, D.Rajagopal, V.2014-08-062014-08-061988Indian J.Agrl.Sci.1988 v-58 i-3 p-213-216http://hdl.handle.net/123456789/4626The stomatal response of cocoa {Theobroma cacao Linn.) leaves to ambient humidity, light and temperature was studied under low and high soil-moisture regimes. The stomatal diffusion resistance increased with decrease in relative humidity, which was magnified by soil-moisture stress. However, the effects of light and temperature were not so pronounced as that of humidity. Stomatal regulation by internal (stress) and external factors (humidity) led to a decrease in transpiration rate, which was a major strategy for water conservation in cocoa plants.enArticle