Al Qaţīf, Saudi Arabia
Al Qaţīf, Saudi Arabia

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Faleiro J.R.,ICAR Research Complex for Goa | Ben Abdallah A.,National Date Palm Research Center | Ashok Kumar J.,ICAR Research Complex for Goa | Shagagh A.,National Date Palm Research Center
International Journal of Tropical Insect Science | Year: 2010

A decision-making sampling plan was developed to initiate new and validate ongoing area-wide red palm weevil Rhynchophorus ferrugineus (Olivier) integrated pest management (IPM) programmes in date palm plantations of Saudi Arabia based on the concept of sequential sampling. Spatial distribution studies revealed that R. ferrugineus population was aggregated and followed the negative binomial series with a mean aggregation index (common K) value of 3.56. In the sampling plan developed, young date palms are inspected in a sequence in units of 100 palms (1ha) until an accurate decision on the infestation level can be made. The plan rates infestations as low and high if d00.478n7.519 and d10.478n+7.519, respectively, where d0 and d1 are the cumulative maximum and minimum infested palms per ha (100 young palms) for not recommending and recommending area-wide management of R. ferrugineus, respectively, and n is the area sampled in ha. In this sampling plan, if 100 palms are inspected and eight or more infestations are detected, then area-wide R. ferrugineus IPM is required. On a 100ha scale (10,000 palms) the plan becomes stricter and permits only 55 infestations. Copyright © 2010 ICIPE.

Al Darwish Z.S.,National Date Palm Research Center | Ben Abdallah A.,National Date Palm Research Center
Acta Horticulturae | Year: 2010

Date palm (Phoenix dactylifera) is the most important crop in Saudi Arabia which accounts for nearly 15% of the global production of dates. Shriveling of dates as characterized by drying, wrinkling and underdevelopment of mature (tamar) dates causes substantial reduction in yield. Trials were carried out during 2007 and 2008 to assess the effect of bunch removal (main treatment) and fruit thinning (sub treatment) on shriveling of matures dates in 'Ghar', a popular date palm cultivar in the Kingdom of Saudi Arabia. Data on the number of shriveled fruits per palm were subjected to analysis of variance using the two-factor factorial experimental design. Results revealed significant differences among treatments. With regard to the main treatment of bunch removal the lowest number of shriveled dates (153) was recorded when 33.00% of the bunches were removed, while for the sub-treatment of fruit thinning the least shriveling (148) was recorded with 25% strand thinning. With regard to the overall treatment mean (interaction), 33.00% bunch removal coupled with 25% strand thinning recorded the lowest number of shriveled dates of 124 which was statistically at par with 25% bunch removal coupled with 25% strand cutting.

Alsenaien W.A.,King Faisal University | Alamer R.A.,National Date Palm Research Center | Tang Z.-X.,King Faisal University | Albahrani S.A.,King Faisal University | And 2 more authors.
Advance Journal of Food Science and Technology | Year: 2015

In this study, the effects of dates powder and dates syrup as a sugar substitution, on the physical properties and sensory attributes of cookies were studied. An increase in firmness and moisture content of cookies supplemented with dates was obtained. The diameter and spread ratio of cookies showed a decrease with increasing levels of date powder or date syrup. Partial replacement of sugar with date powder or date syrup produced cookies with more dark and red color. Sensory evaluation results indicated that cookies with acceptable preference could be supplemented up to 50% with dates powder and up to 75% with dates syrup. Date-based cookies using dates powder or dates syrup could be produced at a commercial scale. © Maxwell Scientific Organization, 2015.

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