Crop protection is a significant economic investment in grape production. While growers primarily manage fruit quality and yield through protective pesticide applications, these measures can fail due to pest resistance, poor pesticide coverage, wash-off from rain, or calibration errors. When protection breaks down, the focus must shift from preventative maintenance to targeted intervention. This requires applying the foundational concept of Integrated Pest Management (IPM): identifying the pest before treating it. Symptoms and pests can be difficult to match, I will teach you “grape pest forensics” to distinguish between insects, biotic diseases, and abiotic disorders. Identifying the root cause before you spray will protect both your harvest and your bottom line.