1. Pest monitoring and scouting in potato End Next

2. Pest management actions are based on data collected through pest monitoring, which involves survey/field scouting, pest monitoring though traps and decision making Pest management action Survey/Field Scouting Pest monitoring through traps Decision making Next EndPrevious

3. 1. Survey/Field Scouting Regular surveys/field scouting should be carried out by farmers/extension functionaries to keep a close watch on the appearance of insect pests, diseases and biocontrol fauna, once in seven days Records should be kept about incidence of insect pests, diseases and presence of biocontrol agents in potato field to assess whether the pest population has reached the Economic Threshold Level (ETL) Next EndPrevious

4. 1. Aphids 20 aphids/100 leaves 2. Potato tuber moth 15-20 moth/trap consecutively for 3 nights 3. Golden nematode 1-2 larvae/gram of soil 4. Late blight Not more than 1 % leaf area 5. Bacterial blight 1 % of plant population 6.Potato viruses 1 % of plant population 7. Soil & tuber borne disease 5 % potato tubers 8. Rodents Working index is 25 live burrows/ha Pest/DiseaseETL ETLs for some important pests and diseases Next EndPrevious

5. 2.Pest population/damage assessment For sucking pests, population should be counted on three leaves (top, middle and lower) per plant Aphid population should be recorded on 34 plants Cutworms and white grub per cent damage assessment can be made by counting total number of plants and affected leaves Next EndPrevious

6. 2.Pest Monitoring through Pheromones/Yellow Pan/Sticky Traps/Light Traps Next EndPrevious

7. Pheromone traps: Pheromone traps may be placed in the field @ 20 traps per hectare for potato tuber moth for mass trapping in the field and @ 4 traps per 100 m 3 area of the store Fig. Pheromone trap Source: www.ipm.iastate.edu Next EndPrevious

8. Yellow pan/Sticky traps Set up yellow pan/ sticky traps for monitoring aphids @ 10 yellow pans/sticky traps per ha. Locally available empty yellow coloured tins coated with grease on outer surface may also be used Next EndPrevious

9. Light traps Set up a light trap during pre-monsoon season to monitor the activity of adult scarab beetles. Light traps can also be installed to monitor the activity of cut worm moths at least one month before the sowing of potato crop Fig. Light trap Source: www. oisat.org Next EndPrevious

10. 3. Strategy for Decision Making: Strategy has to be evolved based on the weekly data on pest/disease and defenders (biocontrol fauna) Judicious decision for management practices are to be taken accordingly considering the ETL and pest: defender ratio PreviousEnd