A Formulated Container Medium Suppressive to Rhizoctonia damping-off of Cabbage

研製具有抑制甘藍立枯病的栽培介質

黃振文(Jenn-Wen Huang) ； 黃鴻章(Hung-Chang Huang)

《Botanical Bulletin of Academia Sinica》 41卷1期 (2000/01) Pp. 49-56

https://doi.org/10.7016/BBAS.200001.0049

摘要

Abstract. Ten agricultural wastes were tested for their suitability as substrates for the growth of cabbage seedlings. Spent forest mushroom compost (SFMC) and spent golden mushroom compost (SGMC) were found to be more suitable than raw spent forest mushroom growth medium (RFM), raw spent golden mushroom growth medium (RGM), rice hull, carbonized rice hull, peanut husk, coconut fiber, bagasse meal or wasted cotton. The optimum composting period for SFMC and SGMC was 10 and 6 weeks, respectively. A new container medium (SSC-06) was formulated using SFMC, carbonized rice hull, shrimp and crab shell meal, blood waste, and lime. The SSC-06 medium was suitable for growth of cabbage seedlings and was suppressive to Rhizoctonia solani AG-4. The suppressive effect of 20-day-old SSC-06 medium on colonization of cabbage seeds by R. solani AG-4 was reduced after it was steamed in 100℃ hot air for l5~30mm. However, the inhibitory effect was restored to the steamed SSC-06 medium by inoculation with Trichoderma harzianum isolate TH-05 at a concentration of 10^5cfu/g dry medium. After the medium was steamed for 5, 10, 15, 25 or 30mim, no fungal colonies were recovered, but the colony-forming units of the bacterial population were maintained at＞10^6/g dry medium. The potential for SSC-06 as a container medium for commercial nursery industries is discussed.

關鍵字

栽培介質 ； 農業發棄物 ； 甘藍立枯病 ； 生物防治

並列摘要

Abstract. Ten agricultural wastes were tested for their suitability as substrates for the growth of cabbage seedlings. Spent forest mushroom compost (SFMC) and spent golden mushroom compost (SGMC) were found to be more suitable than raw spent forest mushroom growth medium (RFM), raw spent golden mushroom growth medium (RGM), rice hull, carbonized rice hull, peanut husk, coconut fiber, bagasse meal or wasted cotton. The optimum composting period for SFMC and SGMC was 10 and 6 weeks, respectively. A new container medium (SSC-06) was formulated using SFMC, carbonized rice hull, shrimp and crab shell meal, blood waste, and lime. The SSC-06 medium was suitable for growth of cabbage seedlings and was suppressive to Rhizoctonia solani AG-4. The suppressive effect of 20-day-old SSC-06 medium on colonization of cabbage seeds by R. solani AG-4 was reduced after it was steamed in 100℃ hot air for l5~30mm. However, the inhibitory effect was restored to the steamed SSC-06 medium by inoculation with Trichoderma harzianum isolate TH-05 at a concentration of 10^5cfu/g dry medium. After the medium was steamed for 5, 10, 15, 25 or 30mim, no fungal colonies were recovered, but the colony-forming units of the bacterial population were maintained at＞10^6/g dry medium. The potential for SSC-06 as a container medium for commercial nursery industries is discussed.

並列關鍵字

Agricultural wastes ； Biocontrol ； Cabbage ； Container medium ； Rhizoctonia damping-off.