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Field Day 2011: Weed Science Update

Field Day 2011: Weed Science Update. Randall Currie, Weed Scientist Jennifer Jester, Assistant Weed Scientist. Kochia Control: Pre & Post. Monsanto sponsored trial of herbicide combinations to determine efficacy on glyphosate resistant kochia

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Field Day 2011: Weed Science Update

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  1. Field Day 2011: Weed Science Update Randall Currie, Weed Scientist Jennifer Jester, Assistant Weed Scientist

  2. Kochia Control: Pre & Post • Monsanto sponsored trial of herbicide combinations to determine efficacy on glyphosate resistant kochia • PRE conducted in 5 states and POST conducted in 2 • Post control focus on locations in Western Kansas • Garden City trial was initiated on May 10,2011 Untreated Gramoxone + AAtrex Round Up Sharpen + AAtrex

  3. Kochia: Pre Treatment Control (KS) ^ Second Scott City location * No data ∞Low 8, 8.4 fl oz/a and High 16, 16.8 fl oz/a

  4. Kochia: Pre Treatment Control (remaining locations) ^ Scottsbluff, NE α Fort Collins, CO * No data ∞Low 8, 8.4 fl oz/a and High 16, 16.8 fl oz/a

  5. Kochia: Post Treatment Control (KS) ^ Scott City and Garden City

  6. Kochia: Post Treatment Control (KS) * Treatment combination not used at this site ^ Scott City and Garden City

  7. Kochia: Post Treatment Control (all locations) *Locations: Gorham, KS; Scott City, KS (^ 2nd location); Hays, KS; Meade, CO; Akron, CO; Tribune, KS; Garden City, KS; Hoxie, KS α No Data

  8. Kochia: Post Treatment Control (all locations) Continued *Locations: Gorham, KS; Scott City, KS (^ 2nd location); Hays, KS; Meade, CO; Akron, CO; Tribune, KS; Garden City, KS; Hoxie, KS α No Data

  9. Kochia Control: Pre & Post • Conclusions • Questions? Paraquat + atrazine: 14 DAT 42 DAT 57 DAT Initial

  10. Kochia control 3-4 WAT averaged across eight experiments inKansas (4), Colorado (2), Montana (1) and Nebraska (1), 2011. 1Includes AMS. 2Retail cost; does not reflect program discounts/rebates.

  11. POST kochia control 3-4 WAT averaged across eight trials in KS (4), CO (2), MT (1) and NE (1).

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