Influence of Soil Water Stress on Evaporation, Root Absorption, and Internal Water Status of Cotton 1

AUTOR(ES)

Jordan, Wayne R.

RESUMO

Diurnal variations in leaf water potential, diffusion resistance, relative water content, stem diameter, leaf temperature, and energy balance components were measured in cotton (Gossypium hirsutum L. var. Lankart 57) during drought stress under field conditions. A plot of leaf water potential against either relative water content or stem diameter during the 24-hour period yielded a closed hysteresis loop. The relation between cell hydration and evaporation is discussed.

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