Effects of Depth and Duration of Flooding on Growth and Yield at Different Growth Stage in Pepper(Capsicum annuum L.);I. Response to Flooding at Seedling Stage

고추(Capsicum annuum L.)의 생육단계별(生育段階別) 침수처리(浸水處理)에 따른 생육반응(生育反應);I. 유묘기(幼苗期) 반응(反應)

  • Guh, Ja-Ock (College of Agriculture, Chonnam National University) ;
  • Kuk, Yong-In (College of Agriculture, Chonnam National University)
  • Published : 1996.09.30

Abstract

Pepper plants were flooded at 0, 5, 10 and 15cm at seedling stage under the condition of greenhouse. Treatment of flooding times are 6, 12, 24, 48 and 120 hours. The results obtained are summarized as follows. Plant height, number of leaves, shoot and root fresh weight were not recovered the flooding damages regardless of flooding time and depth. Pepper plant died in flooding depth of 5cm or more for over 48 hours. Plants in fallen leaves were found at more than 5cm depth and 6 hours of floodings. Photosynthesis and respiration rate decreased in the 5cm flooding depth or more for 24 hours. Chlorophyll content and root activity decreased for 12 hours or more at all the flooding depth. Also, diffusion resistance of stomata cell increased as increased flooding time and depth. Diseases occurred remarkably in proportion to the depth and hours of flooding treatment. It was not possible to control the desease by fungicide, also then was no effects of foliar spray of urea. Weight of fruit per plant not decrease by the 12 hours of 0cm and the 6 hours of 5cm flooding but decreased at deeper and longer flooding. Average weight of a fruit increased. The yield could not expected in the depth of 5cm or more for over 48 hours, There was significant positive correlation between all the investigated characteristics of growth and yield. There was, however, negative correlation between number of leaf and diffusion resistance of stomata.

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