Effect of light irradiation after harvest of sweet pepper (Capsicum annuum L.) fruit on yield and color promotion in summer-fall cultivation
2019
Furuno, S. (Shonai Area General Branch, Administration of Yamagata Prefectural Office, Sakata, Yamagata (Japan). Agricultural Technique Improvement Research Office) | Yoshida, C. | Matsunaga, H.
The effect of light irradiation after harvest of sweet pepper (Capsicum annuum L.) fruit on yield and color promotion by growing stage in summer-fall cultivation was investigated. Light irradiation for 4-7 days promoted fruit coloring by ≥10%, and ≤5% of fruits did not color sufficiently to meet the shipping standard. The number of irradiation days required to promote fruit coloring after harvest from 10 to 90% was also investigated. About 4 days of irradiation promoted fruit coloring in 10% of fruits for each harvest period. Further, for fruits that were left on the plant, the number of days required for coloring from 10 to 90% was 4 days from July to mid-October. After late-October, it increased gradually, and it was over 20 days by December. It is recommended to perform light irradiation post harvest after October in the Tohoku region as it increases the fruit yield by more than 10%.
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