Seed Treatment Pest Control
Seed treatment pest control uses fungicides, insecticides, nematicides, or combinations on seed to protect germination and seedlings. The exam tests seed treatment formulations, rates per cwt, planter safety, pollinator protection, treated-seed handling, and records.
Core rules
- Rates are often per 100 lb seed (cwt); convert seed lot weight to cwt before mixing.
- Commercial treaters, on-farm slurry, mist, and hopper-box treatments have different equipment and label directions.
- Treated seed is not feed or food; the label and seed tag must say treated, and surplus must be managed legally.
- Neonicotinoid dust from pneumatic planters can harm pollinators; follow label dust-reduction measures and avoid blooming crops or weeds at planting.
- Check compatibility, seed lot, germination, and treatment coverage; poor coverage leaves untreated seed.
- Wear label PPE, especially gloves and eye protection; avoid inhaling dust.
Worked example
A label rate is 0.5 fl oz product per cwt. A seed lot weighs 2,000 lb = 20 cwt. Product is 0.5 times 20 = 10 fl oz. If the label gives a slurry volume, add water to reach the specified total volume, not extra product. Reasoning: cwt is 100 lb, so 2,000 lb is 20 units; multiplying rate by units gives total product. Calibrate the treater and verify coverage on a sample.
Traps
- Treating 2,000 lb as 2 cwt and underdosing by a factor of 10.
- Using treated seed for livestock feed or wildlife bait.
- Adding more product to improve coverage and causing phytotoxicity.
- Ignoring planter dust and pollinator warnings.