Citation
Ting A. S. Y., . and Sariah M., . and Jugah K., . and Anuar A. R., . (2000) Effect of ;induced; suppressive soil to Fusarium development. [Proceedings Paper]
Abstract
Fusarium wilt caused by Fusarium oxysporum f. sp. cubense race 4 FocR4 is one of the most serious diseases affecting a wide variety of commercially cultivated bananas. Cultural and chemical control strategies adopted have not been successful due to the soil-borne nature of the pathogen. In most Fusarium wilt suppressive soils it has been reported that disease incidence remains low in spite of the presence of the pathogen the susceptible host and factors favouring disease development. Experiments in the laboratory attempt to establish the role of Trichoderma harzianum and calcium nitrate CaN032 as potential components of suppressive soil. T harzianum produced antagonistic activity towards FocR4 mainly through mycoparasitism lytic activity and antibiosis based on Dual Culture Test Colony Degradation Test Cellophane Overlay Test Double Plate Test Culture Filtrate Test and Hyphal Interaction. T harzianum and FocR4 tolerated pH range of 5-7 and Ca2 concentration of 5-480 ppm when tested on agar and in broth culture. T harzianum and FocR4 was also able to grow and proliferate in Ca2 amended soils up to 1000 ppm. However growth of T harzianum and FocR4 at 1000 ppm was significantly reduced to 108 and 107 from the starting inoculum of 109 and 108 respectively. Ca2 applied as CaN032. was sufficiently absorb by the roots of the banana seedlings within a week after application presumably providing further barriers to infection.
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Abstract
Fusarium wilt caused by Fusarium oxysporum f. sp. cubense race 4 FocR4 is one of the most serious diseases affecting a wide variety of commercially cultivated bananas. Cultural and chemical control strategies adopted have not been successful due to the soil-borne nature of the pathogen. In most Fusarium wilt suppressive soils it has been reported that disease incidence remains low in spite of the presence of the pathogen the susceptible host and factors favouring disease development. Experiments in the laboratory attempt to establish the role of Trichoderma harzianum and calcium nitrate CaN032 as potential components of suppressive soil. T harzianum produced antagonistic activity towards FocR4 mainly through mycoparasitism lytic activity and antibiosis based on Dual Culture Test Colony Degradation Test Cellophane Overlay Test Double Plate Test Culture Filtrate Test and Hyphal Interaction. T harzianum and FocR4 tolerated pH range of 5-7 and Ca2 concentration of 5-480 ppm when tested on agar and in broth culture. T harzianum and FocR4 was also able to grow and proliferate in Ca2 amended soils up to 1000 ppm. However growth of T harzianum and FocR4 at 1000 ppm was significantly reduced to 108 and 107 from the starting inoculum of 109 and 108 respectively. Ca2 applied as CaN032. was sufficiently absorb by the roots of the banana seedlings within a week after application presumably providing further barriers to infection.
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| Additional Information: | Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. QK710.2 M239 2000 Call Number |
| AGROVOC Term: | Fusarium |
| AGROVOC Term: | Wilts |
| AGROVOC Term: | Fusarium oxysporum |
| AGROVOC Term: | Plant diseases |
| AGROVOC Term: | Cultivated plants |
| AGROVOC Term: | Bananas |
| AGROVOC Term: | Soil |
| AGROVOC Term: | Cultivars |
| AGROVOC Term: | Rhizosphere |
| AGROVOC Term: | Isolation of microorganisms |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Suzila Mohamad Kasim |
| Last Modified: | 24 Apr 2025 05:15 |
| URI: | http://webagris.upm.edu.my/id/eprint/12934 |
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