تأثير التلقيح بالتعفير في صنفي نخيل البلح روثانة وربيعة على : أ _ عقد الثمار ووزن العذق

This research was conducted during two successive seasons (1995, 1996) on two date palm cultivars; Rothana and Rabia, at Hada AL-Sham region at the Agricultural Research of King Abdulaziz University. The objective of the study was comparing the traditional pollination method with dusting pollination on fruit set and bunch weight. Traditional pollination method gave the highest fruit set percentage and bunch weight as compared with dusting pollination method. Dusting pollination led to early fruit thinning which was light at higher pollen grain concentrations in the mixture of dusting pollination (2025%). Meanwhile, the heaviest fruit thinning was observed at lower pollen grain concentrations (2.5-5%). The results of this experiment suggested that using 15-20% pollen grain concentrations gave satisfactory yield in both Rothana and Rabia date palm cultivars.