Activites of Molds and Insects during Rice Storage -Part II. Activities of rice weevil(Sitophilus oryzae L.) and Aspergillus species-

쌀 저장중의 곰팡이와 저곡해충 -제2보. 쌀 바구미(Sitophilus oryzae L.)와 Aspergillus species의 생육-

During the rice storage at $28^{\cir}{\pm}1^{\cir}C$ and $60{\sim}70%$ R.H., the moisture content of rice, was increased max. 1. 6% by the activity of rice weevil. The growth of Asp. repens was not affected, while Asp. niger was inhibited after the appearance of its second generation adults. The development of rice weevil was generally accelerated by both of Asp. repens and Asp. niger, but decelerated at higher density of Asp. niger($1.6{\times}10^4$ propagules/g). The total number of rice weevil showed no significant difference during six weeks.

$28^{\cir}{\pm}1^{\cir}C$ 및 $60{\sim}70%$의 상대 습도에서 저장된 쌀은 쌀바구미의 활동에 의해서 6주후 최고 1.6%의 수분함량의 증가를 보였다. Asp. repens의 생육은 쌀바구미의 활동에 영향을 받지 않았으나 Asp. ηiger는 제 2세대 성충의 출현 후 저해되었다. 쌀바구미의 발육도는 Arp. repens 및 Asp. niger에 의해 촉진(促進)되었으나 예외적으로 Asp. niger의 높은 균수(菌數)($1.6{\times}10^4$ propagules/g)에서만은 억제되었다. 6주후 총충체수(體體數數)에는 유의(有意)한 차이가 없었다.