Cucumber “Cucumis sativus “ is one of the famous and a widely cultivated vegetable plant in Palestine and in worldwide , it is belongs to the ground family of “ Cucurbitaceae “ genus of “ Cucumis “.
Salicylic acid is a phenolic phytohormone and is found in plants with roles in plant growth and development, photosynthesis, transpiration, ion uptake and transport. SA has the formula C6H4(OH)COOH.