Effect of Humic Acid, Atonic and Salicylic Acid Spray on some Vegetative Traits on Sweet Orange Transplants cv.Local and Bloody

Abstract

The experiment was conducted in the nursery of Diyala Agriculture Directorate during the growing seasons 2021 from March to November 2021 to study the effect of growth promoters Humic acid, Atonic and Salicylic growth promoters acid spray on some chemical and vegetative parameters of Local and bloody orange transplants budded on sour orange rootstock. The experiment included two factors, the first one was two orange cultivars (Local and bloody), and the second was the spray of growth promoters(Humic acid, Atonic and Salicylic acid). Humic acid was sprayed at 1%, Atonic at 1 ml L-1, and salicylic acid at 300 mg L-1. Results revealed the superiority of bloody cultivar compared to local orange in most studied characteristics (plant height, scion diameter, leaf area, leaves chlorophyll, nitrogen, phosphorous and potassium content). The interaction between salicylic and atonic showed a significant increase in scion diameter, leaf area, leaf chlorophyll content, nitrogen, phosphorous and potassium content compared to untreated transplants.