Herbicide Residue Drift Injury - Canola Council of Canada

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62 Effects of Foliar-Applied Group 10 Glufosinate Ammonium (Liberty) Effects of Foliar-Applied Group 10 Glufosinate Ammonium (Liberty) Liberty herbicide was applied at various rates to non-Liberty Link canola to simulate drift onto susceptible canola varieties. Glufosinate Ammonium symptoms: 5% of a 1.08 L/ acre rate Symptoms were not observed at lower rates. Symptoms first appeared six days after herbicide application. Symptoms included mottling and/or marginal chlorosis of contacted leaves. No effect was observed on new leaves emerging after application. Glufosinate Ammonium symptoms: 10% of a 1.08 L/ acre rate Symptoms appeared four days after application and included chlorosis and necrosis on contacted leaves. Leaves emerging after application were chlorotic and no further plant development occurred.
Effects of Foliar-Applied Group 14 Herbicides The Group 14 herbicides are used in both pre-seed and post-emergent applications, and may cause canola injury due to drift. Group 14 Herbicides Chemical Family Active Ingredient Found In: Aryl Triazone Carfentrazone Aim, Cleanstart Flumioxazin Saflufenacil Sulfentrazone Payload, Valtera Eragon, Heat WG Authority Always confirm active ingredients and recropping restrictions on product labels prior to use. • Symptoms include yellow and desiccated leaves. At high concentrations, death is within one to three days. • As a contact herbicide, low drift concentrations may cause leaf spotting. Photo by Nasir Shaikh Recognizing Herbicide Residue and Drift Injury in Canola 63
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Recognizing Herbicide Residue Drift
Page 3 and 4:
Foliar Herbicide Injury Introductio
Page 5 and 6:
Recropping Restrictions for Residua
Page 7 and 8:
Herbicide Clearfield Canola Non-Cle
Page 9 and 10:
Table 1: Soil factors that effect t
Page 11 and 12: Carryover can have considerable fie
Page 13 and 14: In this case, cupping was caused by
Page 15 and 16: These plants also exhibit symptoms
Page 17 and 18: An unaffected (left) and severely a
Page 19 and 20: An unaffected plant (left) and one
Page 21 and 22: Severe Symptoms At the 3-leaf stage
Page 23 and 24: Severe Symptoms Leaf purpling and c
Page 25 and 26: Severe Symptoms The combination of
Page 27 and 28: Recognizing Herbicide Residue and D
Page 29 and 30: Symptoms observed at this stage are
Page 31 and 32: Chemical Family Active Ingredient F
Page 33 and 34: Conclusion Herbicide carryover can
Page 35 and 36: Recognizing Herbicide Residue and D
Page 37 and 38: OBJECTIVES AND METHODS This section
Page 41 and 42: Sulfosulfuron symptoms: 2% of an 11
Page 49 and 50: Imazethapyr and Imazamox symptoms:
Page 51 and 52: Imazethapyr and Imazamox symptoms:
Page 55 and 56: 2,4-D Ester 600 symptoms: 5% of a 2
Page 57 and 58: 2,4-D Ester 600 symptoms: 10% of a
Page 59 and 60: Effects of Foliar-Applied Group 6 H
Page 61: Effects of Foliar-Applied Group 9 G
Page 66: Canola Council of Canada 400 -167 L
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Herbicide Residue Drift Injury - Canola Council of Canada

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