Abstract
An experiment was conducted in a greenhouse at research station (A) / College of Agricultural Engineering Sciences / University of Baghdad to study the impact of exogenous application of hydrogen peroxide and soil amendments (zeolite and Disper osmotic regulator) in the physiological traits of the Ranunculus asiaticus L. grown in saline soils. The experiment included three factors, soil (S) at two kinds (2.17, 5.8 dsm), soil amendments at includes 3 levels of zeolite (0,4,8 gm kg-1 soil), and two levels Disper Osmotic (1,2 gm l-1), hydrogen peroxide application (0,5,10 mmol l-1). results showed saline soils caused a significant decrease in vegetative and flowering growth, and the leaf content of N, P, K. While a significant increase in the leaf content of Na was observed, is an indicator of oxidative stress. The addition of soil amendments (M3) (1 gm l) to plants grown under salinity stress caused a significant increase in the leaf content of N, P, K and plant height, leaf area and all flowering growth characteristics. Exogenous application of hydrogen peroxide at a concentration (5 mmol l-1) had a significant effect on most of the vegetative and flowering growth characteristics.
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