A survey of Phomopsis leptostromiformis infection of lupin seed in Western Australia: 1976-81

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Abstract
Samples of seed from commercial crops of Lupinus spp. in Western Australia were tested over a 6-year period (1976-8 1) for levels of infection by Phomopsis leptostromiformis. Of the 584 samples tested, 49% were not infected and a further 43% had <4% infection. Overall the levels of infection were higher than those previously recorded in this State. There was a highly significant effect of rainfall zone (P<0.001) on infection level. After accounting for this, there was no significant effect of cultivar, year, or growing zone. The method used was compared with that of Ali et al. (Australian Journal of Experimental Agriculture and Animal Husbandry, 1982, 22, 190-3). No significant differences between the two methods in assessment of lupin seed were observed.

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