Azadeh Niroomand - Department of Biology, Payame Noor University
Seyyed Mansour Seyyed nejad - Department of Biology, Shahid Chamran University
Farshad Abrahimpour - Faculty of Agriculture, Payame Noor University
Abdolali Gillani - Seed and Plant Improvement Research Department Khuzestan Agricultural and Natural Resource Research Center

Rice (Oryza sativa L.) is a monocots plant of Poaceae family and considered as a strategic crop. Currently, chemical fertilizer use has expanded as the fastest way to recover the shortage of soil nutrients and also to increase agricultural production. Application of chemical fertilizers has caused many environmental impacts, including water and soil pollution, and human health problems. Therefore, replacing organic fertilizers rather than chemical fertilizers that have a biological origin and no contaminating effects seems necessary. In this regard, olive pomace can be one of the best options for plant life due to the presence of various useful compounds. In this study, the effect of olives pomace on the Physiological properties of three cultivars of rice plant and its effect on physiological factors in the reproductive stage were studied. A pot experiment was factorial based on completely randomized design with three replications. Three cultivars of Rice, Champa, Red Anboori and Danial were planted in soils mixed with 1,3,5,7 percent of olive fruit pomace. Treated plants were harvested after growth during the reproductive stage. Plant length, fresh weight, dry weight of shoot and root, total chlorophyll and carotenoid, soluble carbohydrates were measured. The amount of K, P, N, and Zn in the different treatments was measured. The results of this study showed that application of olive pomace increased plant height, fresh and dry weight of root and shoot compared to the control treatment. Also, changes in photosynthetic pigments, carbohydrate content, proline, showed that application of olive pomace resulted in an increase in the mentioned indices compared to the control treatment. The optimal concentration was 5% and the growth indices increased. Since olive pomace is a rich source of nutrients and organic substances needed for plant growth, it is recommended to increase in agricultural production.

Rice, Olive pomace, Organic fertilizer, Physiological properties