Evaluation of Some Tomato Varieties Grown at El-Kharga, New Valley, Under Drip and Furrow Surfaces Irrigation Method

Abstract

These experiments were carried out at the experimental research farm of the New Valley Agriculture Research Station ( EL-Kharga Oasis Fig 1 ) in three successive winter seasons 199811999, 1999/2000 and 2000/ 200 l.Three factors were tested in this study .

Four tomato cultivars i.e. Castle Rock , Strain B., Super Marmand and Super Strain B, were grownusing two irroigation methods i.e. drip and furrow. The two irrigation systems had three irrigation regime 1200,1800 and 2400m3 I fed. The growth and yield was found to increase steadily with increasing, therefore the 3000m3/fed irrigation regime was added as the four level in both system in the • third winter season 2000/2001 to need the point of growth curve decline .

Drip irrigation produced a significantly ligher tomato fruit yield than the furrow irrigation, However the WUE was about 50% higher under dripirringatir. Increasing irrigation water from 1200 m3 to 1800 m3 and 2400 increased the Tomato fruit yield steadly during the first tow season, therefor the fourth irrigation level of 3000 m3 irrigation level was introduced to find the point of yield decline with excessive irrigation water. The suggestion of the fourth level produced the excepted point of yield declin in which the yield declined from 21.6 ton when 2400 m3 water were aplied to 17.91 ton when 3000 m3 water was applied. The four tested cultivars showed clear significant differences under the New Valley conditions. The order of performance for either yield or WUE were Super Marmand >Castel Rock> Super Strain B > Starin B. Viewing the picture of the respected cultivars match the recorded data and showed the clear vigor size of the Super Marmand cultivar.