Physical weed control in wide row lupins

Document Type

Conference Proceeding

Publication Date

1-2011

Conference Title

2011 Society for Engineering in Agriculture Conference: Diverse Challenges, Innovative Solutions

Place of Publication

Barton, ACT

ISBN

9780858259904

Keywords

weeds, control, research

Disciplines

Agricultural Science | Agronomy and Crop Sciences | Weed Science

Abstract

Cultivation between crop rows is a common tool for weed suppression in Europe and in row-crops in eastern Australia, which is not commonly practised in Western Australia. The degree of damage this technique can cause the weeds is influenced by weed species, soil engaging tool type and ground speed, soil moisture levels and the probability of post-cultivation rain. The damage to the lupin crop will also be influenced by speed of cultivation, degree of soil throw, stage of crop development and crop density. In-crop harrowing is being used in Europe to remove weeds in organic cereal crops but this technique does not handle stubble. Chain type or rotary harrows can handle stubble and can be adjusted for aggressiveness by changing the chain angle. Treatments included inter-row cultivating at 3 stages of wild radish in a lupin crop, inter-row cultivating again 4 weeks later and Phoenix rotary harrowing at 3 stages of wild radish. No treatment was very effective at reducing wild radish seed set as the in-row wild radish produced high seed numbers. A range of pre-emergent grass herbicides or other techniques need to be tested in the future to reduce in-row weeds.

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Digital Object Identifier (DOI)

https://doi.org/10.3316/informit.808479917851523