Host suitability of Pratylenchus coffeae on several estate crops and coffee shade trees
Host suitability and resistance levels of 8 estate crop cultivars and 13 species of coffee shade trees to coffee root-lesion nematode Pratylenchus coffeae had been tested in the greenhouse of Indonesian Coffee and Cocoa Research Institute. The experiment was arranged in completely randomized design with plant species or cultivars as treatment, replicated 4 times and terminated after 9 months. Based on the value of reproduction factor (R) of P. coffeae and the decrease of plant growth, Saccharum officinarum (sugarcane), Leucaena leucocephala, Crotalaria striata, C. retusa, C. usaramoensis, C. juncea, Moghania macrophylla, Adenanthera microsperma, and Cajanus cajan (pigeonpea) were not hosts and were resistant to P. coffeae. Cocoa (Theobroma cacao) and rubber (Hevea brasiliensis were very favourable hosts for P. coffeae. Reproduction factor value of P. coffeae on these crops ranged from 30 to 600, but only DR 2 clone of fine flavour cocoa appeared to be susceptible to P. coffeae and the others were tolerant. Leucaena resistant to jumping lice (L. diversifolia cv. RSB 01) was a poor host for P. coffeae. Tephrosia vogelii, Erythrina lithosperma (dadap), Sesbania grandiflora and Gliricidia maculata were very suitable and susceptible hosts to P. coffeae.
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| Format: | biblioteca |
| Published: |
1994
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| Subjects: | COFFEA, PRATYLENCHUS COFFEAE, ARBOLES DE SOMBRA, HUESPEDES, RESISTENCIA A LAS PLAGAS, |
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