Quimio, A. J. and Chan, H. H (1979) Survival of Pseudomonas solanacearum E.F. Smith in the rhizosphere of some weed and economic plant species. Philippine Phytopathology, 15 (2). pp. 108-121.
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Abstract
Populations gradually declined in both rhizosphere and nonrhizosphere soils of Echinochloa colonum, Eleusine indica, Amaranthus spinosus, maize, Vigna radiata and rice but not in rhizosphere soil of Portulaca oleracea where they gradually increased. Overall the decline rate was lower in P. oleracea, E. colonum and E. indica and relatively higher in rice and maize. Latent infection by the bacterium was found in P. oleracea but not in the other plant spp. The population was higher in the rhizosphere soil than in nonrhizosphere soil of the weeds; both maize and rice had relatively higher populations in nonrhizosphere soil. In bare fallow soil population decline was slow and comparable to that in weeds. In bioassays with the wilt-susceptible tomato cv. Yellow Plum, the highest level of wilting occurred in soil previously planted to P. oleracea and the lowest in soils previously planted to maize and rice. Compared with previously fallowed soil there was significantly less wilt in soils previously planted to maize, rice and A. spinosus, but not to E. indica, E. colonum and P. oleracea.
| Item Type: | Article |
|---|---|
| Author Affiliation: | Univ. Philippines, Los Banos, College, Laguna, Philippines. |
| Subjects: | Social Sciences > Agricultural Economics |
| Divisions: | General |
| Depositing User: | Siva Shankar |
| Date Deposited: | 28 Oct 2010 05:51 |
| Last Modified: | 28 Oct 2010 05:51 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/354 |
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