Effect of Rainfall Time after Flowering on Grain Yield and Quality in Safflower (Carthamus tinctorius L.)

홍화 개화후 강우 시기가 종실 수량과 품질에 미치는 영향

  • Park Jun-Hong (Research Institute of Natural Product Kyoungbuk Agriculture Technology Administration) ;
  • Park So-Deuk (Research Institute of Natural Product Kyoungbuk Agriculture Technology Administration) ;
  • Kim Se-Jong (Research Institute of Natural Product Kyoungbuk Agriculture Technology Administration)
  • 박준홍 (경상북도농업기술원 신물질연구소) ;
  • 박소득 (경상북도농업기술원 신물질연구소) ;
  • 김세종 (경상북도농업기술원 신물질연구소)
  • Published : 2006.04.01

Abstract

This study was conducted to find out the effect of rainfall time on growth and seed quality in safflower. Rainfall was done artificially and the treatment of rainfall time was divided into 6 parts. Each rainfall treatment was done from the first day of flowering up to the fifth day after flowering, from sixth day after flowering to the tenth day after flowering, from the eleventh day after flowering to the fifteenth day after flowering, from sixteenth day after flowering to twentith day after flowering, from the twenty first day after flowering to the twenty fifth day after flowering and from twenty sixth day after flowering to thirtith day after flowering. Rainfall time after flowering did not affect disease occurrence on the upper part and flower bud of safflower, which were infected at were 3.3 and 1, respectively. Ripened grain found on the main stem and primary branch was 37.4% and 65.0% at first day to the fifth day and sixth day to the tenth day rainfall periods after flowering, respectively. Yield was decreased by 14% in the sixth day up to the tenth day and eleventh day up to the fifteenth day rainfall periods (282-281kg/10a) compared to the one under control (327kg/10a). Hunter's L value was 73.5 and 69.9 in twenty first up to the twenty fifth day and twenty sixth up to the thirtith day rainfall periods after flowering, which decreased significantly to 79.3 under non-rainfall period. Therefore, it can be concluded that the optimum harvest time is twenty fifth day after flowering to maintain seed quality at rainfall time and before harvesting period.

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