Disease Control Efficacy of the Extract of Magnolia officinalis against Perilla and Zoysiagrass Rusts

Research in Plant Disease 2013;19(1):45-48.
Published online March 30, 2013.

단보 : 후박 추출물의 들깨 녹병과 잔디 녹병에 대한 방제 효과

윤미영 ( Mi Young Yoon ) , 최용호 ( Yong Ho Choi ) , 강문성 ( Mun Seong Kang ) , 이재홍 ( Jae Hong Lee ) , 한성숙 ( Seong Sook Han ) , 명인식 ( In Sik Myoung ) , 한병수 ( Byoung Soo Han ) , 최경자 ( Gyung Ja Choi ) , 장경수 ( Kyoung Soo Jang ) , 김진철 ( Jin Cheol Kim )

Disease Control Efficacy of the Extract of Magnolia officinalis against Perilla and Zoysiagrass Rusts

Mi-Young Yoon1, Yong Ho Choi1, Mun Seong Kang2, Jae Hong Lee3, Seong Sook Han4, In Sik Myoung5, Byoung Soo Han3, Gyung Ja Choi1, Kyoung Soo Jang1 and Jin-Cheol Kim1*

¹Ecofriendly New Materials Research Group, Korea Research Institute of Chemical Technology, Daejeon 305-605, Korea
²Yoosung Chemical R&T Co., Ltd., Daejeon 306-120, Korea
³Technical Research Institute, Dongbang Agro Co., Buyeo 323-932, Korea
⁴Department of Crop Environment, National Academy of Agricultural Science, Suwon 441-707, Korea
⁵Department of Crop Protection, National Academy of Agricultural Science, Suwon 441-707, Korea

Received: March 15, 2013 Revised: March 18, 2013 Accepted: March 20, 2013

Abstract

Rusts are plant diseases caused by pathogenic fungi of the order Pucciniales. Rusts can affect a variety of plants. Development of new effective and environmentally benign agents against rusts is of great interest. In this study, we investigated the disease control efficacy of the emulsion concentrate (EC10) and wettable powder (WP20) type formulations of the extract of Magnolia officinalis (Magjia90; containing honokiol and magnolol at 90%) against rust diseases of perilla and zoysiagrass in fields. The treatment of EC10 and WP20 of Magjia90 showed control values of 47.9% to 69.6% and Magjia90-WP20 reduced more effectively the development of rust symptoms on perilla plants than Magjia90-EC10. Magjia90-WP20 also highly suppressed zoysiagrass rust with control values of 65.7% to 80.5%. On the other hand, no harmful effect of Magjia90- EC10 and Magjia90-WP20 was observed on the perilla and zoysiagrass plants tested. The results strongly indicate that the extract of M. officinalis (Magjia90) can be used as a natural fungicide for the control of rust diseases.

Key Words: Eco-friendly organic material, Magnolia officinalis, Perilla rust