The effect of fruit thinning time and thinning rate on flowering, fruit yield and fruit quality of clementine trees (Citrus clementine Hort. ex Tanaka) was investigated during three successive seasons 2017/2018, 2018/2019 and 2019/2020. Data recorded only during 2018/2019 and 2019/2020 seasons. Thinning applied at three different times on 1st June, 15th June and 30th June. Fruit thinning rate were performed when the fruit diameter reached about 25-30 mm, as hand thinning by removing 0, 25 or 50% of fruit number/shoot per tree. Clementine trees grafted on sour orange were studied in an 8-years-old orchard in Al-Sheikh Zuwaid destrict, North Sinai, Egypt. The experimental treatments were arranged in a complete randomized block design. The results obtained showed that thinning clementine trees on 1st June exhibited the greatest value for each of No. inflorescences/ one year shoot, flowers number/ one year shoot, fruit set (%), No. remaining fruits, fruit yield (kg/tree) and fruit weight (g), fruit volume (cm3), fruit length (cm), fruit width(cm) in both seasons while 15th June time thinning gave the highest T.S.S.(%) and segments number, on the contrary 15th June time thinning gave the highest juice acidity(%). Hand thinning at 50% increased all fruit yield and quality parameters except the juice acidity (%) that induced with non- thinning tree (control). Finally, on 1st June, removing 50% of fruit number/shoot per tree caused a significantly increase in flower number, fruit set (%), fruit number, fruit weight, yield/tree and improved the commercial classification of mandarin fruits compared to unthinned ones.
Hammad, S., El-Alakmy, H., Ghieth, W., & El-Deeb, M. (2022). EFFECT OF MANUAL FRUIT THINNING ON YIELD AND FRUIT QUALITY OF CLEMENTINE MANDARIN (Citrus clementine Hort. ex Tanaka) UNDER NORTH SINAI CONDITIONS. Sinai Journal of Applied Sciences, 11(2), 245-256. doi: 10.21608/sinjas.2022.117399.1089
MLA
Saleh Mohamed Hammad; Hany El-Alakmy; Wael Moussa Ghieth; Mohamed D. El-Deeb. "EFFECT OF MANUAL FRUIT THINNING ON YIELD AND FRUIT QUALITY OF CLEMENTINE MANDARIN (Citrus clementine Hort. ex Tanaka) UNDER NORTH SINAI CONDITIONS". Sinai Journal of Applied Sciences, 11, 2, 2022, 245-256. doi: 10.21608/sinjas.2022.117399.1089
HARVARD
Hammad, S., El-Alakmy, H., Ghieth, W., El-Deeb, M. (2022). 'EFFECT OF MANUAL FRUIT THINNING ON YIELD AND FRUIT QUALITY OF CLEMENTINE MANDARIN (Citrus clementine Hort. ex Tanaka) UNDER NORTH SINAI CONDITIONS', Sinai Journal of Applied Sciences, 11(2), pp. 245-256. doi: 10.21608/sinjas.2022.117399.1089
VANCOUVER
Hammad, S., El-Alakmy, H., Ghieth, W., El-Deeb, M. EFFECT OF MANUAL FRUIT THINNING ON YIELD AND FRUIT QUALITY OF CLEMENTINE MANDARIN (Citrus clementine Hort. ex Tanaka) UNDER NORTH SINAI CONDITIONS. Sinai Journal of Applied Sciences, 2022; 11(2): 245-256. doi: 10.21608/sinjas.2022.117399.1089
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