Impact of okra leaf curl disease on morphology and yield of okra
The impact of okra leaf curl disease on four accessions of a local okra cultivar and four commercial okra cultivars was assessed in field conditions from June to October in 2007 and 2008. Disease incidence varied from 68.5% to 72.5% among accessions of the local cultivar while commercial cultivars were much less infected (8.7-16.2%). Diseased plants of the local cultivar suffered more reduced growth (58% reduction) than those of the commercial cultivars (39.6%). The number of marketable fruits per plant, the fruit length, fruit diameter and fruit weight which were subject to reductions of 26-61%, 19-64%, 6-42% and 23-63%, respectively. The overall yield losses were significantly higher in accessions of the local cultivar (26-55%) than in the commercial ones (4.4-9.6%). The average economic losses for one hectare of crop were estimated at of 11,100 USD and 1950 USD, respectively for the local and the commercial cultivars.
| Main Authors: | , , , , , , |
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| Format: | article biblioteca |
| Language: | eng |
| Subjects: | H20 - Maladies des plantes, Abelmoschus esculentus, enroulement des feuilles, http://aims.fao.org/aos/agrovoc/c_8557, http://aims.fao.org/aos/agrovoc/c_4237, http://aims.fao.org/aos/agrovoc/c_8081, |
| Online Access: | http://agritrop.cirad.fr/555567/ http://agritrop.cirad.fr/555567/1/document_555567.pdf |
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