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Extra crop competition with weeds by increasing wheat seeding rate

Extra crop competition with weeds by increasing wheat seeding rate. Peter Newman. Hi! Thanks for downloading our presentation. There’s additional information for you to use in the notes section below each slide, just be sure to leave all the logos where they are.

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Extra crop competition with weeds by increasing wheat seeding rate

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  1. Extra crop competition with weeds by increasing wheat seeding rate Peter Newman

  2. Hi! Thanks for downloading our presentation. There’s additional information for you to use in the notes section below each slide, just be sure to leave all the logos where they are. If you have any questions, please contact Peter Newman, T: 08 9964 1170, E: petern@planfarm.com.au. Thank you, The AHRI Communication Team(Peter Newman, Brogan Micallef & Lisa Mayer)

  3. 1999 - Mingenew • More practical seeding rates & row spacings • Increasing competition reduces weed seed set • Little benefit in increasing seeding rate above 60 kg/ha Panicles /m2

  4. 2012 – MingenewMinus Sakura • Increasing the wheat seeding rate decreases ryegrass seed set in the absence of pre-emergent herbicide

  5. 2012 – MingenewPlus Sakura • Higher wheat seeding rates significantly reduced ryegrass seed set where Sakura was applied pre-sowing

  6. Many growers comment that high wheat seeding rates results in high wheat screenings levels (small grain). However, these two trials and many more like them show that there is no impact of high wheat seeding rates on screenings

  7. Binnu trial 2012Wild radish 40 kg/ha 160 kg/ha • Impact of high wheat seeding rates on wild radish growth • The radish were present in a narrow, un-sprayed strip across the trial

  8. Wheat & radish dry weight • Un-sprayed radish • High wheat seeding rates increased wheat biomass & decreased wild radish biomass

  9. Wheat yield • Problem with high seeding rates is often no responsein wheat yield • 40 kg/ha seed rate achieved optimal wheat density • Increased cost without increasing yield

  10. Wheat yield

  11. Summary • Increasing the seeding rate is a simple, effective method to increase crop competition • Often requires an increase in cost & is an inconvenience at seeding time, often with no yield benefit • Limit to the extra competition that can be achieved • May be more cost effective to increase crop competition through row spacing &crop row orientation

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