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Illinois Seed Treatment Exam 1.seed treatment pesticides include ANS 1. herbicide antidotes (safeners) 2. bacteri- cides 3. inscecticides 4.fungicides 2.not a seed treatment ANS 1. seed applied growth regulators 2. micronutrients 3. nitrogen- fixing organisms 3.advantages of using seed treatment ANS 1. control of seedborne pathogens 2. protect vulnerable seeds and seedlings during stressful conditions of germination and emergence 3.targeted, low dosage 4. relatively inexpensive control option 5.relatively inexpensive control option 6. reduced environment impact 7.may be only real control option 8. may be an alternative for spraying some early foliar pests 4.disadvantages of seed treatment ANS 1. accidental poisoning of children, animals, and wildlife 2.potential for contamination of food and feed supply 3. exposure during 1 / 2
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- low test weight or older seed 3. planting in unfavorable germination
- planting into fields with a history of stand establishment problems 5.
- seed treatment as part of ipm
- avoid development of pests that overcame pesticides and host plant
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application and planting 4. seed or seedling phtyotoxicity 5. limited duration of protection (also a benefit) 6. what to do with leftover treated seed 5.factors that favor the use of seed treatments ANS 1. field is for seed production
conditions such as wet and/or cold soil(these conditions may allow weak pathogens to infect)
planting to precise populations 6. replanting will not be feasible if first planting fails 7. seed is expensive 8. seed thought to carry certain seedborne pathogens 9. yield potential of field is high
ANS 1. help minimize negative effects on the environ- ment 2. avoid pesticide residue in the food supply 3. minimize economic loss due to pests
resistance 7.purpose of seed treatments