Effect of some Foliar Spray Substances During Growth, Flowering and Chemical Composition of Orange Jasmine Plants Grown under Thermal Stress

Abstract

It was known that the changes in the climate during the last years negatively affected the plant's production. At this trend, the effect of high temperatures on the orange jasmine plants was studded. To enhance the ability of orange jasmine plants under thermal stress, various foliar spray components such as calcium nitrate, salicylic acid, spirulina algae extract, and potassium silicate different concentrations were tested. The study was conducted throughout two seasons in 2021 and 2022. Generally, the tested spray compounds reduced the effect of high and low-temperature stresses and improved flower productivity of Murraya paniculata, L. Salicylic acid at a concentration of 75 mg/l and potassium silicate at 3cm/l were superior most of the other treatments in terms of extending plant height, producing more leaves and flowers, increasing plant weight both fresh and dry and improving the chemical composition of leaves.Spraying the plants by salicylic acid at 75 mg/l or potassium silicate at 3cm/l every month besides using the compound fertilization reduced the thermal stress effects and increased the quantity and quality flowers of Murraya paniculata, L.