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Effects of fruit thinning on fruit drop, leaf carbohydrates concentration,fruit carbohydrates concentration, leaf nutrient concentrationand fruit quality in Pummelo cultivar Thong Dee |
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| รหัสดีโอไอ | |
| Creator | Pongnart Nartvaranant |
| Title | Effects of fruit thinning on fruit drop, leaf carbohydrates concentration,fruit carbohydrates concentration, leaf nutrient concentrationand fruit quality in Pummelo cultivar Thong Dee |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2559 |
| Journal Title | Songklanakarin Journal of Science and Technology (SJST) |
| Journal Vol. | 38 |
| Journal No. | 3 |
| Page no. | 249-255 |
| Keyword | pummelo,fruit drop,fruit thinning,Thong Dee,leaf carbohydrates concentration |
| ISSN | 0125-3398 |
| Abstract | The effects of fruit thinning on fruit drop, leaf carbohydrates concentration, fruit carbohydrates concentration, leafnutrient concentration and fruit quality in pummelo cultivar Thong Dee growing in Nakhon Pathom province, Thailand, werestudied during January-August 2013. The results showed that 50% fruit thinning by hand at 1 month after fruit set increasedpercent of fruit retention throughout fruit development. At 2 month after fruit set, 50% fruit thinning gave 62% of fruitretention, which were significantly higher than no thinning (36.60%), whereas, 50% fruit thinning gave 40% of fruit retentionat 6 month after fruit set, which significantly higher than no thinning (20.2%). A significant difference in leaf carbohydrateconcentration was found in 3-6 month after fruit set. At 3 months after fruit set, 50% fruit thinning gave significantly higherleaf carbohydrate concentration (81.80 mg.g-1) than no thinning (73.56 mg.g-1), whereas, at 6 month after fruit set, 50% fruitthinning gave significantly higher leaf carbohydrate concentration (128.92 mg.g-1) than no thinning (102.90 mg.g-1). Although,50% fruit thinning gave no effect on peel and pulp dry weight including peel and pulp carbohydrates concentration duringfruit development. For plant nutrient analysis, 50% fruit thinning gave significantly higher leaf nitrogen (N), phosphorus (P)and potassium (K) concentration than no thinning during 3-6 month after fruit set. However, 50% fruit thinning had no effecton fruit weight, fruit circumstance, fruit diameter, titratable acidity (TA) and total soluble solid (TSS). It was concluded that50% fruit thinning increased percent of fruit retention and may have an effect on the accumulation of leaf carbohydrates,leaf N, leaf P and leaf K concentrations in pummelo cultivar Thong Dee. |
