Sub-plot size was 4.2 m 4.2 m, with 84 plants spaced 0.3 m apart, in
rows separated from one another by 0.7 m (equivalent to a planting density of4.76 plants m2). The 50% ETM irrigation regime generated only a moderate water deficit
because the local climatic conditions alleviated its effect to the extent that there was little
evidence of afternoon leaf wilt. ETM (net of rain) was calculated using the following
formula: