A Factorial experiment was conducted in the lath house of the Technical college /Musaib from August 2014 to December 2015 to find out the influence of Salicylic acid and Humic acid on growth and development of domestic mandarin budded on sour orang rootstock . The experiment includes two factors ; salicylic acid (0 , 50 , 100 and 150 mg/l ) and Humic acid (0 , 200 and 400 mg/l ) sprayed 3 times from during the growing season , C. R. D. with 3 replicates and 4 seedlings for each experiment unit was adopted. Results may be summarized as follow :
• Salicylic acid (150 mg/l ) gave higher means of plant height , girth , leaf number , leaf area , shoot number and dry matter of green parts.
• Humic acid at 400 mg/l had an obvious impact on the vegetative traits. This concentration however gave the highest means of plant height , girth , leaf number , leaf area , shoot number , dry matter of vegetative and root parts as well as leaf content of chlorophyll |