Studies of management techniques for weedy rice (Oryza sativa L.) based on seedling emergence in Yamaguchi prefecture

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Key Points

Assess the effectiveness of autumn non-tillage and herbicide treatments against weedy rice in Yamaguchi prefecture.
Tested seedling emergence rates of weedy rice in non-tillage and herbicide treatment scenarios.
Compared winter survival conditions of weedy rice seeds on the soil surface versus buried in the soil.
Evaluated different herbicide application timings in relation to rice transplanting.
Seedling emergence was generally higher when weedy rice seeds overwintered on the soil surface.
Autumn non-tillage was not conclusively effective for weedy rice management in this region.
Shortening the interval between herbicide applications is essential to reduce weedy rice emergence.

Observational study evaluates herbicide and non-tillage effectiveness on weedy rice in Yamaguchi, suggesting changes in treatment timing.

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Murata et al. (2025) studied this question.

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