英文摘要 |
Treatments of soil pH adjustment and applications of organic fertilizers, beneficial microbes and antifungal metabolite in a series of combination were practiced to create different soil conditions on Fusarium wilt-infected banana plots. The disease incidences of tissue-cultured Pei-Chiao (Cavendish, AAA) compared. Results revealed that three out of the twelve treatments had lower disease incidence, i.e. Treatment G-soi1 pH adjustment with application of organic fertilizer and Streptomyces,Treatment J-soil pH adjustment with application of tea seed dregs, Treatment C-soil pH adjustment with application of castor seed meal, Streptomyces metabolite and Trichoderma-enriched organic fertilizer, each with a disease incidence of 11.1 %, 12.2% and 19.5%, respectively. In addition, Treatment A-soil pH adjustment with application of castor seed meal, Streptomyces metabolite, Streptomyces and Trichoderma-enriched organic fertilizer had the lowest browning index of vascular bundle among treatments. Treatment B-soil pH adjustment with application of tea seed dregs, Streptomyces metabolite and Streptomyces had no disease symptoms on vascular bundle and extremal appearances. It was conc1uded that soil management practices by adjusting soil pH in combination with the application of tea seed meal, castor seed cake, Streptomyces,Streptomyces metabolite and Trichoderma-enriched organic fertilizer in a Fusarium wilt-diseased soil had the effect of lowering the disease incidence of Fusarium wilt. To further reduce the disease incidence, both increase in the dosage of organic materials and a longer treatment time before seedlings being planted are suggested. |