| Title | Weed management systems for leafy greens |
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Repository View: https://ucanr.edu/repository/a/?a=177886 Direct to File: https://ucanr.edu/repository/a/?get=177886 |
| File Information | Dual Magnum is being evaluated for use as a pre-transplant herbicide for lettuce. Prior research has shown it to be safe on traditional 30-day-old lettuce transplants. However, the latest transplanting technology is using plants that are less than 20 days old, and these lettuce plants are more sensitive to Dual Magnum than 30-day-old plants. Lettuce transplants at 1, 2, 3, 4 and 5 leaf stages were transplanted into soil treated with Dual Magnum at 0.67 pints/A. Transplants at the 4 and 5 leaf stages were tolerant of this rate of Dual Magnum while the younger transplants were not as tolerant. Another part of the project evaluated the use of Dual Magnum at 0.16, 0.33, 0.51 and 0.67 pints/A. Results indicated that rates greater than 0.5 pint/A were highly injurious to young lettuce transplants. The results clearly indicate that the focus of research should be on lower rates of Dual Magnum when used with Plant Tape technology. Tank mixes of Dual Magnum plus Kerb were evaluated and found that Dual Magnum plus Kerb improves control of common sowthistle compared to Kerb alone. Dual Magnum plus Kerb did not help improve control of common purslane or burning nettle compared to Kerb alone. The best role for Dual Magnum should be in 30-day-old transplants, and where young transplants are used, Dual Magnum should be used at a rate less than 0.51 pints per acre in combination with Kerb. |
| Date Added | Jun 11, 2019 |
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