All Issue

2018 Vol.30, Issue 2 Preview Page
July 2018. pp. 83-89
Abstract
This study was conducted to select the optimal water spray number for the efficient utilization of a pulsatory direct water spray gun system. In order to accomplish the purpose of this research, we evaluated the impingement forces, according to different power pressures, distances, and water spray numbers per second, using a novel pulsatory direct water spray gun system. Based on the result of the basic test, the power pressure and distance of spray that can expect excellent performance were selected as 2 MPa and 1 m, respectively. Then, the flower and leaf bud thinning rate were investigated with different water spray numbers per second under four different flower developmental stages. The optimal water spray frequency for the use of the pulsatory direct water spray gun system was nine sprays per second at the flowering stage, because it resulted in 80% of the flower thinning rate and less than 8% of the leaf bud thinning rate. These results will be used for field applications, which could contribute to labor savings in peach cultivation.
References
  1. Choi, D. J., Park, W. H., Kim, I. S., Cho, J. W., Sim, Y. G., Kim, S. J. (2007) Breeding of early season peach cultivar ‘Miwhang’ (Prunus sp.) with high quality. Korean J Hortic Sci Technol 25:83.
  2. Costa, G., Vizzotto, G. (2000) Fruit thinning of peach trees. Plant Growth Regul 31(1):113-119.10.1023/A:1006387605042
  3. Jun, J. H., Kwon, J. H., Nam, E. Y., Chung, K. H., Yun, I. K., Yun, S. K., Kwack, Y. B., Kim, S. J., Kang, S. J. (2013) ‘Yumi’ peach. HortScience 48:1416-1417.
  4. Myers, S. C. (1986) Effect of thinning time on the subsequent development of fruit, shoots, and flower buds of peaches. HortScience 21:680-687.
  5. Park, Y. S., Heo, J. Y., Lee, W. K., Nam, J. S. (2017) Performance test of direct water spraying labor-saving system for flower and bud thinning of peach. J Agric Life Sci 51:161-170.10.14397/jals.2017.51.4.161
  6. Rural Development Administration (2011) Income reference of agro-products in 2011, Seoul, Korea.
  7. Southwick, S. M., Fritts, R. (1994) Commercial chemical thinning of stone fruit in California by gibberellins to reduce flowering. Acta Hortic 394:135-147.10.17660/ActaHortic.1995.394.13
  8. Southwick, S. M., Weis, K. G., Yeager, J. T. (1995) Controlling cropping in ‘Loadel’ cling peach using gibberellin: effects on flower density, fruit distribution, fruit firmness, fruit thinning, and yield. J Am Soc Hortic Sci 120: 1087-1095.
  9. Theron, K. I., Steenkamp, H., Steyn, W. J. (2017) Efficacy of ACC (1-aminocyclopropane-1-carboxylic acid) as a chemical thinner alone or combined with mechanical thinning for Japanese Plums (Prunus salacina). HortScience 1:110-115.10.21273/HORTSCI11445-16
  10. Tukey, H. B., Einset, O. (1939) Effect of fruit thinning on size, color, and yield of peaches and on growth and blossoming of the tree. Am Soc Hortic Sci 36:314-319.
  11. Yoo, J. G., Kang, B. K., Kim, D. H., Lee, J. W., Choi, I. M., Jung, H. Y., Choung, M. G., Lee, D. H., Choi, D. G. (2016) Effect of flower and fruit thinner on fruit set and fruit quality of ‘Gamhong’ apples. Korean J Hortic Sci Technol 34:24-31.
Information
  • Journal Title :Journal of Agricultural, Life and Environmental Sciences
  • Volume : 30
  • No :2
  • Pages :83-89
  • Received Date :2018. 07. 04
  • Accepted Date :2018. 07. 09
Journal Informaiton Agriculture and Life Sciences Research Institute Journal of Agricultural, Life and Environmental Sciences
  • NRF
  • KOFST
  • crosscheck
  • crossref crossmark
  • crossref cited-by
  • crossref funder-registry
  • orcid
  • open access
  • ccl
Journal Informaiton Journal Informaiton - close