Effect of Different Levels of Applications of Illite on the Growth of Red Pepper (Capsicum annuum L.) in Bed Soil

This study was performed to explore the effect of the clay mineral illite on the improvement of bed soil and plant growth. Red pepper (Capsicum annuum L.) was used as a model vegetable crop. The experiment was performed during the whole six weeks in the glass house of the Chungbuk National University. Its seedlings were cultivated in the bed soil normally used for horticultural purpose. Of the seedlings cultured, the healthy and regular size of seed were selected and cultivated in the pots. They were treated with two forms of illite, particulate (PA) and powder (PW), at the following application rates: standard application[P1 (PA1, PW1), 1:20 (w/w)], two times[P2 (PA2, PW2), 1:10 (w/w)], and four times[P4 (PA4, PW4), 1:5 (w/w)] of standard application. Untreatment (P0) was used as a control pot. At six weeks of cultivation, their growth lengths were correspondingly increased as the application rate was increased ranging from P0, P1, P2, and to P4. Their growth length was a little greater on the application of powder illite (PW) than on the particulate illite (PA). Based on the plant analysis for the root, leaf, stem of red pepper, the uptake amounts of K, Ca, and Mg, were correspondingly increased, as the application rate was increased ranging from P0, P1, P2, and to P4, respectively. At the same application rate, their amounts taken up in the respective parts were higher on the application of PW illite than on the PA one. Especially the amounts of Ca and Mg were higher in the stem, leaf than root. Consequently, it appears that the illite treatment, especially, PW form of illite, enhance the growth of red pepper in the glass house during the whole six weeks of experiment.

상토에서 일라이트의 혼합비율에 따른 고추 육묘시 생육효과

점토광물 일라이트를 이용하여 고추의 생육증진 효과를 평가하기 위하여 2010년 충북대학교 첨단원예 유리온실에서 시험을 수행 하였다. 시험은 상토를 이용하여 수행하였으며 일라이트 처리는 기준량 처리 1:20 (w/w), 2배량 처리 1:10 (w/w), 4배량 처리 1:5 (w/w)의로 처리하였으며 재배기간 동안 수분공급 이외에 다른 영양성분은 일체 공급하지 않았다. 고추는 대촌을 선택하여 실험하였으며 작물의 양이온 K, Ca, Mg의 흡수량을 측정하여 일라이트 처리에 따른 효과의 차이를 평가하였다. 6주간의 생육 특성을 비교 해본 결과 고추는 무처리구 대비 1~21%의 생장이 증가함을 보였다. 처리량에 따른 고추의 뿌리, 줄기, 잎에서의 무처리구 대비 처리구의 흡수량은 K가 무처리구 대비 뿌리에서 -0.09-32%, 줄기 34-85%, 잎에서 29-110%, Ca는 뿌리에서 -12-29%, 줄기 49-120%, 잎에서 22-86%, Mg의 뿌리는 -0.3-56%, 줄기 40-128%, 잎은 31-155%의 차이를 보였다. 또한 고추 대촌은 일라이트 처리량에 따라 양분흡수량이 증가한다는 것을 확인할 수 있었으며 이로 인하여 고추의 생장의 차이가 발생하였다고 사료된다.