|
KMID : 0525720140190010015
|
|
Journal of Chitin and Chitosan
2014 Volume.19 No. 1 p.15 ~ p.20
|
|
|
Effect of Chitin, Chitosan, and Yucca Extract on Efficacy of Biological Control for Cucumber Seedling Damping-off
|
|
Kim Sung-Mo
Ju Wan-Taek
Song Yong-Su
Kim Young-Ju
Jung Woo-Jin
Park Ro-Dong
|
|
|
Abstract
|
|
|
|
To test the effect of biological control on the dampping-off (Rhizoctonia solani) of cucumber, chitin (CTN), chitosan (CSN), yucca extract (YE), and microorganism formulations [Bacillus subtilus (BIO), Trichoderma harzianum GBF-0208 (TRI), and Bacillus subtilus GB-0365 (CIL)] were applied to the cucumber seedlings in an environment-controlled chamber. Growth characteristics and the incidence of dampping-off (IDO) were investigated in the treated cucumber seedlings for 9 days after inoculation of R. solani. When treated with mixture of 1% yucca extract and 1% chitin, growth of cucumber seedlings was the highest. IDO decreased less than 50% in the plants treated with the mixture of chitin, chitosan, and yucca extract, while IDO was over 50% in the single treatment of chitin, chitosan, and yucca extract. Especially, yucca extract decreased IDO significantly. IDOs were 22.2% in the plants treated with BIO+YE and 25% with CIL+YE, suggesting the synergistic effect of YE with BIO and CIL. All these results indicated that chitin, chitosan, and yucca extract showed a bio-control effect against the cucumber dampping-off R. solani disease and the application of the microorganism formulations together with them was also proven the synergistic effect on controlling the cucumber dampping-off R. solani disease.
|
|
|
KEYWORD
|
|
|
Rhizoctoni solani, Bacillus subtilus, Trichoderma harzianum, Yucca extract, Chitin, Chitosan, Bio-control
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|
|