Response of Saeidy Date Palms Grown Under New Valley Conditions to Spraying Salicylic Acid and Seaweed Extract

摘要

This study was conducted during 2013 and 2014 seasons to examine the effect of single and combined applications of salicylic acid at 0.0 to 0.2 % and seaweed extract at 0.0 to 4 % on growth, palm nutritional status, flowering, fruit setting, yield and fruit quality of Saeidy date palms grown under New Valley environmental conditions. The selected palms received four sprays from each biostimulant. Treating the palms four times with salicylic acid at 0.05 to 0.2% and / or seaweed extract at 1 to 4 % was very effective in improving growth characters, palm nutritional status, flowering, fruit setting, yield and fruit quality over the check treatment. The promotion was materially associated with increasing concentrations. Meaningless promotion on these characters was observed with increasing concentrations of salicylic acid from 0.1 to 0.2% and seaweed extract from 2 to 4%. The best results with regard to yield and fruit quality of Saeidy date palms grown under New Valley conditions were obtained due to spraying the palms four times with a mixture of 0.1% salicylic acid plus 2 % seaweed extract.