파종전 무기유황 관주처리가 묘삼의 생육 및 뿌리썩음병 발생에 미치는 영향
Effect of Irrigation of Sulfur Solution before Sowing on Growth and Root Rot Disease of Seedling in Ginseng Nursery
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To control the disease of root rot in ginseng nursery, inorganic sulfur solution of 0.1%, 1.0%, and 2.0% wereirrigated by amount of 10 ℓ per 3.3 ㎡ before sowing. On the last ten days of July, Fusarium solani and F. oxysporum weresimilarly detected by 44.8% and 43.8%, respectively, while Cylindrocarpon destructans was low detected by 4.4% in the diseasedseedling. The more sulfur’s concentration was increased, the more soil pH was decreased. Soil pH was decreased from5.87 to 4.59 by the irrigation of sulfur solution of 1.0%. The more sulfur’s concentration was increased, the more electricalconductivity (EC) of soil was increased. EC was increased from 0.27 dS/m to 1.28 dS/m by the irrigation of sulfur solution of1.0%. Irrigation of sulfur solution was effective on the inhibition of damping-off caused by Rhizoctonia solani in ginsengseedling. Control value for damping-off by the irrigation of sulfur solution of 1.0% and 2.0% were 75.7%, and 78.5%,respectively. Growth of leaf was inhibited by the irrigation of sulfur solution of 2.0%. Root weight per 3.3 ㎡ showed thepeak in sulfur solution of 1.0%, while survived-root ratio and root weight per plant were decreased in the level of 2.0%. Survived-root ratio of seedling in sulfur solution of 1.0% was distinctly increased by 4.7 times compare to the control, butcontrol value for root rot was relatively low as 49.2%. Mycelium growth of C. destructans, F. solani, and R. solani weredistinctly inhibited by the increase of sulfur’s concentration in vitro culture using PDA medium.
Abstract
To control the disease of root rot in ginseng nursery, inorganic sulfur solution of 0.1%, 1.0%, and 2.0% wereirrigated by amount of 10 ℓ per 3.3 ㎡ before sowing. On the last ten days of July, Fusarium solani and F. oxysporum weresimilarly detected by 44.8% and 43.8%, respectively, while Cylindrocarpon destructans was low detected by 4.4% in the diseasedseedling. The more sulfur’s concentration was increased, the more soil pH was decreased. Soil pH was decreased from5.87 to 4.59 by the irrigation of sulfur solution of 1.0%. The more sulfur’s concentration was increased, the more electricalconductivity (EC) of soil was increased. EC was increased from 0.27 dS/m to 1.28 dS/m by the irrigation of sulfur solution of1.0%. Irrigation of sulfur solution was effective on the inhibition of damping-off caused by Rhizoctonia solani in ginsengseedling. Control value for damping-off by the irrigation of sulfur solution of 1.0% and 2.0% were 75.7%, and 78.5%,respectively. Growth of leaf was inhibited by the irrigation of sulfur solution of 2.0%. Root weight per 3.3 ㎡ showed thepeak in sulfur solution of 1.0%, while survived-root ratio and root weight per plant were decreased in the level of 2.0%. Survived-root ratio of seedling in sulfur solution of 1.0% was distinctly increased by 4.7 times compare to the control, butcontrol value for root rot was relatively low as 49.2%. Mycelium growth of C. destructans, F. solani, and R. solani weredistinctly inhibited by the increase of sulfur’s concentration in vitro culture using PDA medium.
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