Glyphosate Herbicide Damage Information

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In the last 10 years the introduction of transgenic cotton and IPM has resulted in a 80% reduction in pesticide use which has had a positive effect on biodiversity in and around cotton.

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Herbicide Damage Identification

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Phenoxy's / Synthetic Auxin

24-D
24-D and picloram
Dicamba
Fluroxypyr
Glyphosate & 24-D
MCPA
MCPA plus Picloram
Triclopyr plus Picloram

Bleachers

Atrazine
Bromoxynil
Cyanazine
Diuron
Fluometuron
Glyphosate
Isoxaflutole
Prometryn
Simazine

Yellowers

Chlorsulfuron
Imazapic
Imazapyr
Metsulfuron

Dessicants

Glufosinate
Paraquat plus diquat

Useful Links:

   Cotton Pest Management Guide 2011 12 Spray Application (1.2MB)
   Cotton Pest Management Guide 2011 12 Weeds Section (1.8MB) includes chemical trade names and marketers Page 111
   Herbicide Damage Symptoms Guide, WEEDpak PDF version for (printing and mobile devices)

Glyphosate
Herbicide Damage Information

Glyphosate at 35 and 173g ai/ha

Cotton plants were exposed to glyphosate at 17% and 3% of the field dose commonly used in cotton. The glyphosate formulation used was Roundup Ready Herbicide® (glyphosate 690 g a.i./kg, present as the mono-ammonium salt), a Nufarm product, at 250 g/ha and 50 g/ha. Roundup Ready Herbicide was applied at 6, 8, 12 and 16 nodes of cotton growth, broadcast over the crop in 100 L water/ha. All data were compared to an untreated control.

Glyphosate at 35 g at 6 nodes

Glyphosate at 35 g at 8 nodes

Glyphosate at 35 g at 12 nodes

Glyphosate at 35 g at 16 nodes

Glyphosate at 173 g at 6 nodes

Glyphosate at 173 g at 8 nodes

Glyphosate at 173 g at 12 nodes

Glyphosate at 173 g at 16 nodes

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