Effect of Olive Mill Waste Water (OMWW) different levels addition to soil and irrigation water in growth and development Punica granatum L. seedlings

This research was conducted during (2020-2022) in Ain Shiqaq village _ Jableh – Lattakia. the analyzes were conducted in the Laboratories of Agriculture Faculty of Tishreen university and Agricultural Scientific Research in Lattakia and. With the aim of studying the effect of Olive Mill Waste Water on some soil properties and the growth of Punica Granatum seedlings (French variety) planted in polyethylene bags. The experiment was divided into two separate parts, in the first part OMWW was added to the soil within the bags one month before planting the cuttings according to the following treatments T1(125ml)_ T2(250ml)_ T3(375ml)_ T4(500ml) add to control to without adding OMWW, in the second part OMWW was added to the irrigation water used for irrigating Punica Granatum seedlings at the age of two month according to the following treatments B1(5%)_ B2(10%)_ B3(20%)_ B4(30%) add to control B0 (irrigation with plain water), according to Completely Random Block Design (CRBD) with four replications per treatment and 10 seedlings per replicator. The results showed that the addition of OMWW to the soil before planting led to a slight increase in the Ec value and increase in the percentage of OM, there was little effect on degree of pH, this was accompanied by a slight decrease in the soil content of total calcium carbonate compared to the control, when adding OMWW to the irrigation water it led to clear effect on the properties of the soil, the value of Ec and the percentage of OM increased dramatically, in addition the soil degree of pH and total calcium carbonate content decreased compared to the control, these effects were directly associated with the increase in the rate of added OMWW. The percentage of rooted cuttings was no effected by adding OMWW, treatment B2 outperformed all other treatments by all measurements taken on the seedlings (seedlings height_ number of leaves_ root length_ wet and dry weight of the vegetative and roots_ leaf area) followed by treatments (B1_T4) both of whish recorded similar measurements, there was also a deterioration in the growth of the seedlings of treatment(B3_B4) which resulted in the death of a number of seedlings of these treatments.