Annuals Biennials Perennials all weed are equally problematic 15. Spring annuals Winter annuals Biennials Perennials 16. Non-selective herbicides kill any plant that they come into contact with. True False 17. No residual Short residuals Long residuals 18.
All insects are detrimental to crop production.
True False 19. Population size should be considered when determining whether an insect control method should be implemented. True False 20. Provide a concise but accurate and complete answer for each question. Water requirement curve for a crop grown in this area.