Effect of Humic and Salicylic Acids Foliar Application in the Chemical Content of Papaya Seedlings

Abstract

The experiment was carried out on Papaya seedlings (2 months old) to determine the effect of humic acid (HA) and Salicylic acid (SA) on seedlings growth under local environmental conditions of in a private orchard in Diyala governorate. Humic acid (HA) sprayed at 4 concentrations (0, 1, 2 and 3%), whereas Salicylic acid (SA) was used at three concentrations (0, 200 and 400 mg.L-1). The results showed that spraying with the high concentrations of both acids gave the best results in most studied traits, in addition these treatments decreased significantly leaves proline content.