Effect of Both Soil Improvements and Irrigation Levels on Potato Productions

This study dealt with the effect of the irrigation water quantity added at the irrigation levels I1 and I2 (100 and 50% of available water and the effect of correlation between the polymer and animal amendments added to the soil on the potato crop. Result showed that the plant properties were impacted by the irrigation level I1 compared to the level I2. The values of site 2 were superior over the values of site 1 in terms of the plant height, number of stems, dry root weight, average weigh of the tuber and the yield of each plant. The interference treatment P3O2 of the irrigation level I1 achieved the best values for the two sites, in addition to the positive role played by the soil improvements (polymer and animal amendments), which meliorated the values of porosity, infiltration, increased water retention by soil and decreased the bulk density. In addition to that, there is an evident effect of the irrigation level I1 and the interference amongst the levels P 3 O 2 , P 2 O 2 and P 3 O 1 on the total number of the tubers and the total production in comparison to their counterparts at the irrigation level I2. The treatment P3O2 achieved the best results in terms of the number of tubers and the total production at the irrigation level I2 for both sites whereas the effect of I1 irrigation level with the animal amendments was clear in terms of number of the big tubers and big-size production. The interference between the polymer and the animal amendments at the I1 level, showed a clear superiority in terms of tubers number and the productivity as small tubers for planting and the interference treatment P 3 O 2 recorded the highest results at the irrigation level for both of the two sites .