Study on sub-surface irrigation in new lands

Effect of lateral pipes spacing for net irrigation on maize and beans crop: 1- Maize and beans emergence percent, plant height and root depth decreased by increasing plant distance from lateral. No significant decrease was noticed with increased plant distance 0 and 25 cm from lateral pipe, but difference was very significant when plant distance increased at 50 and 75 cm from lateral. 2- No significant difference in branches and pods per plant were noticed at increased the plant distance from 25 cm from lateral pipe , but they were very significant when the plant distance from lateral were 50 and 75 cm 3- Seed yield of maize and beans were not significantly affected , but were significantly affected by plant distance from lateral the treatment A ( spacing 75 cm ) gave more yield of maize and beans yield . 4- The maximum value of water use efficiency ( WUE ) for maize crop was 2.92 kg/m3 at treatment C while the minimum value of water use efficiency ( WUE ) was 2.31 Kg/m3 at treatment A . The maximum value of water use efficiency ( WUE ) of beans crop was 2.37 kg/m3 at treatment C , while the maximum value of water use efficiency ( WUE ) was 1.51 kg/m3 at treatment B. 5- Water application efficiency of maize and beans crops increased as the age increased due to increasing the effective root zone and reduction of water irrigation losses. 6- Economic analysis for maize production under sub-surface irrigation treatments , it is show that the treatment : A gave more profitable than another treatments. Economic analysis for beans production under sub-surface irrigation treatments it is show that the treatment C gave more profitable than other treatments.