INFLUENCE OF ORGANIC FERTILIZER AND POLLINATIONS TREATMENTS ON LEAVES CHEMICAL CONCETRATION AND YIELD OF" BARHI" DATE PALM

This study was aimed to investigate the response of "Barhi" cultivar trees to sheep manure, pollinator's and number of pollinations. This experiment was carried out during 2022 and 2023 seasons at one of "Barhi" palm orchards propagated by tissue culture, grown in Al-Dawwar date palm station affiliated to Ministry of Agriculture. ten-year-old Barhi cultivar. Factors of experiment included addition of three levels of sheep manure, 0 (M0), 20 (M1) and 40 kg,tree-1 (M2), as well as two pollinators cultivar, Ghanami Akhdar (P1), and local cultivar (P2), while pollinations number were three times; once (N1), Two pollinations (N2) (2 days after first pollination) and pollination three times (N3) (3 days after first and 3 days after second). 54 date palm trees were utilized in factorial experiment; treatments were replicated three times in RCBD. The results showed that manure (40 kg.tree-1) (M2) was significantly effective in leaf potassium concentration 1.488 and 1.531 % , leaf chlorophyll concentration 1.568 and 1.723 mg,100g-1 , fresh weight 9.42 and 12.36 kg and tree yield 47.10 and 61.80 kg for both seasons respectively. Pollinators did not significantly effect on leaf potassium and chlorophyll concentration while local cultivar pollinator (P2). significantly increased bunch weight 7.82 and 10.59 kg and highest fruit yield weight 39.11 and 52.95 kg for both seasons respectively.Results also showed that pollinations number did not significantly effect on leaf potassium and chlorophyll concentration while pollination three times (N3) gave highest bunch weight 7.91 and 11.31 kg .