Efficacy of Crown (carbathiin and thiabendazole) to control seed borne Ascochyta blight on kabuli chickpea
Date
2001-02-22
Authors
Matus, A.
Atchison, J.
Pensaert, E.
McLeod, R.
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Ascochyta blight (Ascochyta rabiei) of chickpea (Cicer arietinum L.) is an economically important disease transmitted through the seed and stubble. In 2000, approximately 25% of the chickpea acreage in Saskatchewan was lost as a result of ascochyta blight (Pearsy, 2000). Partial resistance in ‘Sanford’, ‘Dwelley’, ‘Myles’, and ‘B90’ chickpea cultivars becomes less effective as the plant matures. The sexual stage (Didymella rabiei) has been found on chickpea residues in some regions of Saskatchewan (Chongo et al., 2000). Ascochyta infection from seed-borne inoculum occurs as scattered patches across the field and the disease spread from these patches. When infected seeds are sown, the fungus infects the seedling as it emerges and continue to sporulates on the plant until it eventually infects neighbouring plants. This disease may cause serious damage to a chickpea crop under cool and wet growing conditions, particularly at flowering and pod setting (Nene, 1984). Infected seed is presumed responsible for the introduction of the pathogen into new areas (Kaiser and Hannan, 1988). This study was conducted to determine efficacy of Crown (Carbathiin 92 g L-1 and Thiabendazole 58 g L-1) to control seed borne ascochyta blight on Kabuli chickpea.
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Part Of
Soils and Crops Workshop