1. a category of pest control substances2. annual medical name of pest control substances3. Select the appropriate pest control substances against pests.4. check the color of the bars and labels on the container or package contains pest control substances.5. how to observe symptoms of the disease and pest.6. properties of substances to control crops diseases and parasite prevention. Pest and weed7. how to use hormones and chemical pest control correctly.8. practice and safety in the use of9. the effectiveness and intensity of pest control.10. how to use pest control substances effectively.11. the residual effect of pest control substances12. the shelf life of each type of pest control.13. mix correct pest control14. drug consumption that is appropriate for the area.15. reasonable cost of buying chemical pest control16. how to keep pest control substances when not all.17. to eliminate the pest control substance containers18. the approach to pest control, toxic substance.19. the impact on health.20. environmental impact
การแปล กรุณารอสักครู่..
