In pepper, cucumber, eggplant and lettuce, against cotton leafworm, it is necessary to fight the pest when 1-2 newly opened egg packages or 4-5 larvae are seen in 100 plants by walking in the diagonal direction. Since the result will be better when the application is made before the larvae disperse, care should be taken in the application time.
In tomato, against greenworm, the field is entered from the diagonal direction, 50-100 plants are checked depending on the size of the field, and eggs and larvae are searched in the flowers, leaves, stems, fruits and shoots of the plant. Application is made if 5 out of 100 plants are found to be infected.
In order to detect adult emergence against tomato moth, sexually attractive pheromone traps are used in the field (1-2 traps/ha) and in the greenhouse (1 trap/greenhouse) immediately after planting. The traps are checked once a week and when the first adult is seen in the trap, at least 100 plants are checked according to the size of the production area and eggs, larvae and pupae are searched in the flowers, stems and fruit shoots of the plant. If 3 out of 100 plants are infected with any biological stage of the pest, application is made.
All plants in a 3-meter row length randomly selected against cotton greenworm are checked and greenworm eggs and larvae are counted and application is decided when an average of 2 larvae are found in a 3-meter row length.
When the daily average temperature reaches 14-15 ˚C against potato beetle, the field is entered in the direction of the diagonals and eggs, larvae and adults of the pest are searched in the pits. Encountering any stage of it indicates that the field is infected. If application is to be made against the first generation, it should be done when the first mature (4th stage) larvae are seen on the plants. In case of application to the second generation, it should be waited for the egg hatching to be completed. Since the damage that will occur depending on the insect density in this period can be tolerated by the plant, application may not be necessary. As a result of the research, 20% of the damage caused by the potato beetle on the leaves of the potato plant can be tolerated by the plants and there is no decrease in the product. This rate goes up to 40% depending on the phenological period and development status of the plant.