Compared with a rotary (broadcast) spreader, a drop spreader:
- Covers a large area in much less time
- Throws granules outward in a wide, tapered arc
- Places granules precisely between its wheels
- Needs each pass overlapped by half
Show the answer
C. Places granules precisely between its wheels
A drop spreader meters granules straight down across its hopper width, giving precise edges next to beds and walks, but it is slow and any gap or overlap shows as a stripe. Wide tapered patterns belong to rotary spreaders.
Reference: Ornamental and turf category manual: calibration and application
White cottony fungal growth seen on diseased grass blades in the early morning is an example of a:
- Symptom
- Vector
- Disorder
- Sign
Show the answer
D. Sign
A sign is the pathogen itself or its parts, such as mycelium, spores or fruiting bodies. A symptom is the plant's reaction, such as a leaf spot, wilting or yellowing.
Reference: Ornamental and turf category manual: plant diseases
In IPM, the action threshold is the:
- Highest rate permitted by the label
- Pest level at which control is justified
- Number of sprays allowed in a season
- Point where the pest has been eliminated
Show the answer
B. Pest level at which control is justified
The action threshold is the pest density or damage level at which treatment is needed to prevent unacceptable injury or loss. Below it, monitoring continues without treatment.
Reference: Integrated pest management for landscapes and structures