I Wayan, Wangiyana and Peter S., Cornish and E. Charles, Morris JI-01 ARBUSCULAR MYCORRHIZAL FUNGI (AMF) DYNAMICS IN CONTRASTING CROPPING SYSTEMS ON VERTISOL AND REGOSOL SOILS OF LOMBOK, INDONESIA. Experimental Agriculture.
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Abstract
Arbuscular mycorrhizal (AM) fungi may have a major role in P nutrition of crops in Lombok, where fertiliser use is low. As a start to understanding this role, AMF dynamics were monitored from the 1999 non-rice season to the end of the 1999/2000 rice season at 32 sites including dryland systems with no rice, upland rice, and flooded systems with one or two rice crops per year in the rotation. Over all four systems, root colonisation was greater in vertisol (22.3% of roots) than in regosol (9.5%) soil, possibly due to lower Bray- 1 P content of the vertisol (6.2 versus 13.7 mg kg-1). Colonisation was poor in flooded rice (3.1-5.1%), but at the same sampling times it was better in upland rice (10.6-13.4%) and in non-rice crops growing in dryland systems (13.8-17.0%). Therefore, the low colonisation in flooded rice appeared to be the result of flooding, not the rice itself. Flooding also reduced transparent spore numbers, but sufficient inoculum appeared to survive flooding for plants in the following non-rice season to be well colonised (19-33%) regardless of system. These non-flooded crops appear to replenish depleted AMF propagules.
| Item Type: | Article |
|---|---|
| Subjects: | S Agriculture > S Agriculture (General) |
| Divisions: | Fakultas Pertanian |
| Depositing User: | Dr. Wayan Wangiyana |
| Date Deposited: | 23 Nov 2022 05:58 |
| Last Modified: | 23 Nov 2022 05:58 |
| URI: | http://eprints.unram.ac.id/id/eprint/33329 |
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