Effect of spent mushroom compost in organic agriculture to produce Okra under drip irrigation system.

The experiment was conducted in 2022 to find out the effect of the amount of fertilizers Spent Mushroom compost (COM) added to the soil in different ratios COM0, COM1, COM2, COM3, COM4,(0,1.5,2,2.5,3) kg.m2 respectively under three levels of dripping drainage 2, 3, and 4 L.hr−1 on the soil properties, represented by the density and total porosity of the soil and the okra plant characteristics Lahlouba Cultivar As well as studied the chemical characteristics of some major elements in plant leaves.The experiments were conducted by adopting the Randomized Complete Block Design (RCBD), L.S.D 0.05 according to the program Genestat in three replications. The results indicated that the COM4 treatment achieved the best results and was much better than the other treatments in soil properties: soil bulk density (SBD) and total soil porosity (TSP), as well as achieved the best results and was much better than the other treatments significantly in yield characteristics, plant height (PH), plant dry weight (PDW), Pods number for the growing season (PNGS), water use efficiency (WUE), one plant yield (OPY) and proportion of nutrients in plant leaves N, P and K. While dripping discharge 4L.hr−1significantly outperformed to the other two levels of 2 and 3 L.hr−1 in all studied characteristics, except water use efficiency (WUE) which achieved the best results when discharging 2L.hr−1. [ABSTRACT FROM AUTHOR]