Examples of seed containing a patented trait include but are not limited to Genuity® Seed containing a patented trait can only be used to plant a single commercial crop from which seed cannot be By opening and using a bag of seed, you are reaffirming your obligation to comply with the most recent stewardship requirements. Once a plant is cut below the cotyledon it will not come back.Īuthor: Nuseed Product Development Manager Alison Pokrzywinskiīefore opening a bag of seed, be sure to read, understand and accept the stewardship requirements, including applicable refuge requirements for insect resistance management, for the biotechnology traits expressed in the seed as set forth in the technology agreement that you sign. To minimize stand loss in the spring, scout for cutworms through at least the V4 stage. Several insecticides work well if cutworms are feeding on the surface.Economic threshold is when you have a 25-30% stand reduction or when there is one small larva (1 inch or smaller) per square foot.Larger cutworms, 1.25” to 1.5” (depending on the species) are close to pupating and feed less. Small larvae pose the greatest potential for damage as they continue to feed and grow. When a row is missing plants, start by looking near the next undamaged plant for the cutworm.Scouting towards the evening can be helpful, otherwise look underneath the soil surface or stubble during the day.Generally, cutworms can first be found on warmer south facing slopes, areas that border grass/pasture or a spot in the field that has weed issues the year before.Damage can first be noticed by bare patches in a field or several missing plants in a row.Here are some key factors to consider for cutworms in sunflowers: As the plant matures, damage moves to the leaves and the plant is typically able to recover (V4-V6 stage). Damage is caused by cutting off the seedling, sometimes below the cotyledon or before they even emerge out of the ground.
Sunflowers can have irreversible damage in the seedling stage from several species of cutworms. When everything looks great from a distance, don’t forget to get out of the pickup and check your sunflower fields for cutworms this time of year. Jun 6, 2019, 10:00 AM Cutworms in Sunflowers
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