论文信息 - SCLEROTINIA SCLEROTIORUM AND MOWING INDEPENDENTLY REDUCE CALIFORNIAN THISTLE IN A SHEEP PASTURE

SCLEROTINIA SCLEROTIORUM AND MOWING INDEPENDENTLY REDUCE CALIFORNIAN THISTLE IN A SHEEP PASTURE

An experiment was conducted in a sheep-grazed pasture in Canterbury to test the hypothesis that control of Californian thistle by Sclerotinia sclerotiorum, applied as a mycoherbicide, is limited because the thistle roots escape from the fungus by rapid growth. Replicated field plots were either not treated or treated with the mycoherbicide in spring 1993 and again in spring 1994. The thistles were then either mown on three occasions in each of the summers to limit root growth, or left to develop normally. Both the S. sclerotiorum mycoherbicide and mowing reduced the thistle’s root-bud population, as measured by the shoot population emerging in the summers following treatment, but these effects were not synergistic, providing no support for the

G. Bourdôt | G. Hurrell

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