Spraying biostimulants on Le Conte pear trees reduces fruit drop and enhances yield, improves fruit quality, and storability | ||||
| Egyptian Journal of Agricultural Research | ||||
| Article 43, Volume 102, Issue 2, July 2024, Page 251-261 PDF (629.83 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejar.2024.245336.1457 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Hamdy E. Elzayat1; Nevien M. Taha2; Naglaa H. Shakweer  2
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| 1Fruit Handling Research Department, Horticulture Research Institute, Agricultural Research Center, Giza, Egypt | ||||
| 2Deciduous Fruit trees, Horticulture Research Institute, Agricultural Research Center, Giza, Egypt | ||||
| Abstract | ||||
| The aim of this research paper is to compare the effects of spraying four affordable plant biostimulants on the yield of pear trees and fruit quality at harvest and during cold storage for 2 months at 0 ºC. This study investigated the effect of bean extract solution of a concentration 0.1, 0.2 %, sodium alginate at 0.1, 0.2 %, succinic acid at 200 or 400 ppm, salicylic acid at 200 or 400 ppm, and a combination of bean extract at (0.1 % + succinic acid at 200 ppm), and treatments, in addition to control. Trees of “Le-Conte” cv. of 10 years old were sprayed with the above-mentioned substances three times: at bud swelling date, at onset of fruit set, and after 2 months of the 2nd estimation. At harvest, pear fruits were stored at 0 ºC for 2 months. The present results clearly showed that, all treatments yielded in good results of increasing fruit number per tree and all parameters of fruit quality especially the combination of bean extract 0.1 %+ succinic acid 200 ppm induced the highest fruit yield, T.S.S., hue angle, fruit shape index, and increased T.S.S. and vitamin C content compared to control during cold storage. In the meantime, these treatments these treatments decreased fruit weight loss and acidity percentage. Bean extract at 0.1 or 0.2 % increased fruit yield, weight, volume, T.S.S., vitamin C content and fruit lightness, but caused a decrease in acidity and fruit weight loss during 2 months of cold storage. Therefore, we can recommend for “Le-Conte” pear growers to spray trees with a combination of the extract of germinated bean seeds at 0.1% + succinic acid at 200 ppm three times: at growth start, at onset fruit set, and after 2 months, to raise fruit yield, and to improve fruit quality expressed as T. S. S., hue angle and vitamin C content at harvest and after cold storage at 0 ºC for 2 months. | ||||
| Keywords | ||||
| Le-Cont Pear; Bean extract; Sodium alginate; Succinic acid; Salicylic acid; fruit quality | ||||
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