IMPROVEMENTS OF YIELD AND FRUIT QUALITY OF ZAGHLOOL DATE PALM BY USING THE DIFFERENT THINNING TREATMENTS | ||
| Journal of Productivity and Development | ||
| Article 3, Volume 24, Issue 4, October 2019, Pages 743-756 PDF (441.97 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpd.2019.71654 | ||
| Authors | ||
| Osama Zagzog* 1; bahaa el bana2; Saed Mehana3; ElSaied Qauod4 | ||
| 1Plant Prod. Depart. Fac. of Tech. and Deve., Zagazig Univ., Egypt. | ||
| 21Department of Plant Production, Faculty of Technology and Development, Zagazig University., Egypt. | ||
| 3Department of Plant Production, Faculty of Technology and Development, Zagazig University., Egypt. | ||
| 4Department of Pomology, Faculty of Agic. Suez Canal University. Egypt | ||
| Abstract | ||
| Different hand thinning treatments were conducted on Zaghloul date palm cultivar to study their effects on bunch yield and fruit quality. Seven thinning treatments; (1) control (no thinning), (2) Thinning by removing 25% the bunches number/ palm in Hababouk stage, (3) Thinning by removing 25% the strands number/ palm in Hababouk stage (4) Thinning by removing 25% of strands length per bunch in Hababouk stage, (5) Thinning by removing 25% the bunches number/ palm in Kemri stage, (6) Thinning by removing 25 the strands number/ palm in kemri stage, (7) Thinning by removing 25% of strands length per bunch in kemri stage, at a private farm under the conditions of the Ismailia Governorate, Egypt. Fruit thinning significantly decreased yield per palm. Fruit thinning by treatments (2,5) significantly increased the bunch/weight, however the other thinning treatments decreased the bunch weight. Fruit thinning significantly increased the average fruit weight, fruit size, flesh weight, flesh thick, fruit dimensions, seed weight and color index as compared to the control in both seasons. Fruit thinning had significant effect on the total soluble solids, fruit acidity, vitamin C, reducing sugars, non-reducing sugars, total sugars and total soluble tannins in both seasons. Thinning by removing 25% of strands length bunch in Hababouk stage significantly improved fruit quality compared with the other treatments. Conclusively, it is concerning mentioned that the thinning treatments occurred in Hababouk stage gave good results than in kemri stage. | ||
| Keywords | ||
| date palm; Thinning; fruit quality; Bunch weight; Hababouk stage; kemri stage | ||
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