Pecan IPM Toolbox
Insect Monitoring and Control
Leaf Tatterer and Defoliator Survey
| Sampling | Time |
| (a) Rate insects on 5 leaves on each monitor tree* |
(a) April through mid-May |
| (b) Rate each leaf**: 0 = 0 larvae per leaf 1 = 1 - 2 / larvae per leaf 2 = 3 - 5 / larvae per leaf 3 = 6+ larvae per leaf |
(b) Rate on weekly internal |
*Survey 5 - 10% of trees in orchard.
**Sum ratings from 5 leaves per tree and divide by five to obtain tree rating. Record one rating for each tree. Average tree ratings to obtain orchard rating and the need to spray.
Action Levels
| Pest | Orchard Rating |
|---|---|
| Sawfly | 0.5 |
| Cigar leaf casebearer | 1.0 |
| Pecan leaf casebearer | 1.0 |
| Catacola | 0.2 |
| May beetles | 0.5 |
| Leafminers | 1.0 |
| Spittlebugs*** | 0.1 |
***Inspect 5 shoots instead of 5 leaves if spittlebug is suspected to be a problem. Rate number of shoots with spittlebug.
Next: First Generation PNC Control