Effect of polyoxal and Seaweed Extract In soil salinity and yield of eggplant Solanum melongena L. Grown in plastic houses

This experiment was carried out in Al-Muthanna Governorate in one of the unheated greenhouses Dimensions (9 x 54 m) belonging to Experiment Station of agricultural research in Al-Bandar area on the side of the Euphrates River, belonging to the College of Agriculture / University of Al-Muthanna for the winter growing season (2021-2022), to study the effect of adding polixal 20-8 at four concentrations (0, 4, 8, 12 ml L-1 ) and the effect of foliar spraying seaweed extract (Algaren) at four concentrations (0, 1.5, 3, 4.5 ml L-1 ) in the readiness of Some nutrients and their concentration in the plant of growth yield of eggplant cv Barcelona. The treatments were assigned to experimental following a randomized completely block design (R.C.B.D.) with three replicates and means were compared according to L.S.D. test at the level 0.05. The results showed the significant superiority of adding a polixal (12 ml L-1 ) on soil salinity and plant yield. The electrical conductivity when adding the transactions in the first batch amounted to 4.758 ds m-1 and the electrical conductivity when adding the transactions in the second batch amounted to 3.727 ds m-1 , and the electrical conductivity when adding the transactions in the third batch amounted to 2.653 ds m-1 . The total yield of the greenhouse was 566.37 kg dunums -1 .