None of the above. All pests should be controlled, regardless of costs, to avoid all crop losses. When the economic damage to the crop is less than the cost of the control measure, the use of a control method is justified. When the economic damage to the crop exceeds the cost of the control measure, the use of a control method is justified. Economics do not play a role in the decision to control pests.
All pesticides are systemic.
Nematodes d. Viruses 14. Pathogen Susceptible host plant Proper environment for the development of the disease All of the above None of the above 15. Storage maturity 17. The ability to maintain a high quality product in storage is highly associated with the moisture content of the crop when initially stored. True False 21.