1 / 27

Comprehensive Study on Onion Weed Control Using Pre-emergence Herbicides

This research, funded by The ADOPT Fund of Saskatchewan Agriculture and Food and The Saskatchewan Vegetable Growers Association, aims to compare pre-emergence herbicides in onions for efficacy and crop safety. Herbicides such as Goal, Chateau, Buctril, Dual, and Prowl were tested on Norstar and Copra cultivars. Results show the importance of weed control in maximizing onion yields and the potential impact of herbicides on crop health.

tlown
Download Presentation

Comprehensive Study on Onion Weed Control Using Pre-emergence Herbicides

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Onion Weed Control Funding Provided By: The ADOPT Fund of Saskatchewan Agriculture and Food and The Saskatchewan Vegetable Growers Association

  2. Onion Weed Control Objectives (2011 + 2012) - to demonstrate and compare efficacy and crop safety of pre-emergence herbicides in onions

  3. Onion Weed Control Products demonstrated - Goal (oxyfluorfen) - Chateau (flumioxazin) - Buctril (bromoxynil) - Dual (metolachlor) - Prowl (pendimethalin)

  4. Onion Weed Control Cultivars – Norstar and Copra Field - U of S Field Station - “standard” spectrum of weeds - field rotovated week ahead of seeding - direct seed crop in rows 0.5 m apart - just prior to crop emergence – burn off emerged weeds with glyphosate -

  5. Onion Weed Control Maintenance - Overhead irrigated as required - 50 #/a N top-dressed in early July - sprayed with Quadris for botrytis

  6. Onion Weed Control Sprayed - at 2 true leaf stage (mid-June) - repeat at 4-6 leaf stage (mid-July) - all stages and rates according to product label - applied with standard spray gear

  7. Onion Weed Control Data collected - crop toxicity - weed counts/weights - onion yields Herbicides compared against an untreated Control

  8. Onion Weed Control Results - high water table in both years - 2010 crop generally healthy … but grew slowly - 2011 crop struggled with disease and flooding through August – then took off - significant weed pressure throughout both growing seasons

  9. Onion Weed Control Results 2011 - no obvious crop toxicity for any product 2012 - Chateau seemed to stunt/weaken plants - More disease on Chateau treated rows

  10. Onion Weed Control Results - weeds change with season/plot 2011 - Early = stinkweed, RRPW, - Later = mallow, dandelion and curled dock

  11. Onion Weed Control Results - weeds change with season/plot 2012 - Early = stinkweed, portulaca - Later = portulaca, pigweed and groundsel

  12. 2011

  13. 2012

  14. Check Check Chateau

  15. Check Goal

  16. Onion Herbicides Conclusion - several effective pre-emergent herbicides available - Chateau and Goal provide outstanding control of wide range of broadleaf weeds.

  17. Onion Herbicides – 2012

  18. Onion Herbicides – 2012

  19. Onion Herbicides Conclusion - weed control is crucial in onions - there are some highly effective herbicides available for use in onions - watch for “hidden” costs of weed control - potential for damage to the crop … while tilling/pulling weeds … by herbicides

More Related