evaluate the sole and interactive effect of irrigation frequencies and mulches on performance and water productivity functions … of tomato crop. The experiment was composed of three irrigation frequencies {rainfed (RF); CPE50 and CPE25 where … irrigation was given at 50 and 25mm of cumulative pan evaporation (CPE)}, kept in the main plots. The subplots consisted of four …

to the soil nitrate-N, the amount of N applied as fertilizer and grain yield. The effect of irrigation and N … without irrigation accumulated in the 0–0.2m depth and nitrate-N did not significantly decrease, due to minimal crop N uptake … both irrigation treatments (R=0.614; R=0.648), and in the wet year (2008) in the non-irrigated treatment at the V12 growth …