The experiment conducted during 2018-2019 to study effect of added 15 and 30 t.h-1 level of three kinds of decomposing organic fertilizers on some chemical properties for two varieties of tomato (Red flower F1 and Waad RZ) in field of agricultural experiments station college of Agriculture, University of Basrah. Results showed a significantly effect of hybrid (Red flower F1) compared with hybrid (Waad RZ) on leaves content of : Total chlorophyll, total N and total soluble carbohydrate, increased 10.6, 14.39 and 8.84% respectively. Results showed a significant effect of organic fertilizer especially 15 t.ha-1 poultry fertilizer on total chlorophyll and total N in leaves content with increase of 67.75 and 110.31% respectively, 30 t.ha-1 poultry fertilizer significantly increased of total P in leaves content increased 143.48%. Decomposing cattle fertilizer with 30 t.ha-1 significantly increased of total K in leaves content with increased 181.30% also corn residues fertilizer with 30 t.ha-1 significantly increased of total soluble carbohydrate with 109.89%. Interaction between experiment factors were significantly effect on total chlorophyll, K and soluble carbohydrate in leaves content. Study also revealed different influences of organic fertilizer as follow: The poultry fertilizer (15 t.ha-1) increased the total leaves content of chlorophyll and N with 67.75 and 110.31% respectively. While the poultry fertilizer (30 t.ha-1) significantly increased the total leaves content of P with 143.48%. The decomposed cattle fertilizer (30 t.ha-1) significantly increased the total leaves content of K with 181.30%. Whereas corn residues (30 t.ha-1) significantly raised the total leaves content of soluble carbohydrate with 109.89%.

This experiment aimed to determine the impact of organic and biological fertilizers on the development of the okra plant. The research was carried out in a private field in the Al- Madinah district north of Basra during the 2022 agricultural season. Organic manure (cow manure) was added to the soil at two different rates of 5% and 10% of the soil weight at a depth of 30 cm. Biofertilizer was sprayed on the leaves at three different rates of 2%, 4%, and 8 g/l of yeast suspension. Comparisons were made between the outcomes and the control group (without any addition). The experiment outcomes demonstrate that all indicators of vegetative growth and production were maximized by treating organic fertilizer at 10% concentration and spraying biofertilizer at 8 g/liter concentration. It attained the most significant values for plant height, leaf number, leaf area, fruit weight, and overall plant yield, measuring 156.18 cm, 85.34 leaves, 1.48 m2, 4.86 g, and 338.16 g/plant, respectively.