What are the Best Practices for Pest Scouting?

Organizations can achieve long-term cost savings by utilizing detail-oriented staff and following a basic scouting methodology to address most pest problems effectively. This article discusses some of the tips for building a successful pest-scouting method.

Fremont, CA: Scouting encompasses more than merely inspecting for insects; it also involves assessing diseases, nutrient deficiencies, height management, irrigation problems, and the developmental stage of the crop. This process requires walking through the crop and examining flowers, stems, roots, and leaves closely. While it may appear to be an inefficient use of time for valuable greenhouse staff who could be engaged in other essential tasks, accurate scouting necessitates the attention of a dedicated individual.

Organizations can effectively manage most pest issues by employing detail-oriented personnel and adhering to a fundamental scouting methodology, ultimately leading to long-term cost savings.

Prep the Greenhouse:

Effective scouting begins with segmenting the greenhouse into distinct zones. Allocate a specific duration for inspection in each zone, commencing with the plants closest to the entry points, as these areas are frequently the first to be affected by pests.

Inspect Plants:

Cultivators are aware that certain plants consistently encounter challenges with particular pests. These plants require vigilant monitoring and management and will likely necessitate preventative measures.

Effective scouting entails thoroughly examining the entire crop to assess overall color, height, and uniformity. It is essential to identify any plants that deviate from the norm, and if any problematic areas are noticeable, one should begin searching for pests.

After completing this initial assessment, randomly select plants for a more detailed inspection. To detect pests, it is advisable to utilize a hand lens with a minimum magnification of 10X, while fungal diseases can typically be identified with the naked eye.

Analyze the upper and lower surfaces of the leaves and the undersides of the leaves, flowers, and stems. Pests tend to favor specific locations on plants. Carefully inspect mature leaves, particularly along the midvein, where mites are often first detected.

When scouting for root pests, it is essential to remember that some reside in the soil. Therefore, do not overlook the necessity of removing a few plants from their pots in each section to examine the roots.

Check for Pest Counts:

Yellow sticky cards, indicator plants, and potato disks are frequently employed to capture insects and assess their populations. Positioning yellow sticky cards at consistent intervals within the greenhouse is advisable, typically utilizing three to four cards for every 1,000 square feet. Additionally, ensure that supplementary cards are located near entrances and ventilation openings.

Keep Records:

Ensure your scouting report accurately documents the pest life cycle and the growing conditions. 

●  Pest Life Cycle: Keep a close watch on the species of pest, the number of pests and eggs found on the plant, the various stages of the pest life cycle (including adults, larvae, and eggs), the developmental phase, as well as any crop-related problems and types of damage observed. 

●  Growing Environment: It is crucial to include temperature data, as it significantly influences pest development; higher temperatures typically accelerate life cycle progression.

These are some of the tips for establishing a successful pest-scouting method. Other tips include knowing the crop’s economic threshold and scouting frequently.