Cotton (Gossypium hirsutum, L.) was planted in Weslaco, TX into a Raymondville clay loam soil on 8 Mar. 2000 in order to evaluate the potential use of multiple applications of a 6 % (w:v) particle film, ‘Surround’, to plants grown under two soil moisture regimes. Treatments were evaluated for their effect on soil and plant water status, plant canopy temperatures, and agronomic performance. ‘Surround’ spray applications reduced mid-day canopy temperatures typically 1.5 C and reduced leaf transpiration rates 13% compared to unsprayed plants. ‘Surround’-sprayed plants had slightly improved light penetration through the canopy (P=0.13), higher canopy reflectance, and lighter leaf objective color attributes, as determined by ‘L’ ‘-a’, hue angle and chroma values. Leaf chlorophyll (mg/g dw) was not affected by spraying , but leaf area (P=0.10) and plant height (P=0.07) were slightly reduced in plants given particle film applications. Raw lint yields were increased 24% when ‘Surround’ was applied (P=0.12). There were no differences in soil moisture between sprayed and unsprayed plants, but there was more soil moisture in the high soil moisture regime in the 25-cm depth on the second and last three of the eight measurement dates. Five inches of rainfall during the establishment of the two water regimes negated most soil moisture profile differences.