11.2 Categories 3, 5 & 6: Ornamental/Turf, Aquatic & Right-of-Way
Key Takeaways
- Category 3 is officially Ornamental, turf and lawn care, and licensure in it also qualifies the applicator for interior plantscapes, sports turf, and golf courses after the 2022 conversion of the old Categories 18, 19, and 20.
- Section 5(3) requires Category 3 applicators to know phytotoxicity across diverse plant material, drift, persistence beyond the intended period, fungi, weeds, insects, disease and fertility, effects of pesticides on ground water, and - because of proximity to habitations - methods that minimize hazards to humans, pets, and other domestic animals.
- 302 KAR 26:080 posting and notification duties fall almost entirely on Category 3 work, making it the most procedurally regulated commercial category in Kentucky.
- Section 5(5) requires aquatic applicators to know the characteristics of various aquatic use situations, the potential for adverse effects on non-target plants, fish, birds, beneficial insects, and other organisms in the treated environment and downstream, and the principles of limited area application.
- Section 5(6) requires right-of-way applicators to know terrestrial and aquatic environments traversed by rights-of-way, target pest recognition, and techniques to minimize non-target exposure, runoff, drift, and excessive foliage destruction.
11.2 Categories 3, 5 & 6: Ornamental/Turf, Aquatic & Right-of-Way
Category 3: Ornamental, Turf and Lawn Care
Section 3(3) scope. Persons applying pesticides or impregnated fertilizer to control insects, weeds, and diseases in turf, lawns, and maintenance of ornamental trees, shrubs and flowers, including the control of pests that do not normally invade structures, such as bagworms, grubs, and moles. The regulation then states that licensure in this category shall qualify an applicator to make applications to interior plantscapes, sports turf, and golf courses - the practical effect of the Section 10(3) conversion of old Categories 18 (Golf Course), 19 (Interior Plantscapes), and 20 (Sports Turf).
The "do not normally invade structures" clause is the boundary against Category 7(a). Bagworms, grubs, and moles are Category 3. German cockroaches and subterranean termites are Category 7(a).
Section 5(3) competency. Practical knowledge of the pesticide problems associated with production and maintenance of ornamental trees, shrubs, plantings, and turf, including:
- Cognizance of potential phytotoxicity due to a wide variety of plant material and non-target organisms, drift, and persistence beyond the intended period of pest control;
- Fungi, weeds, insect infestation, disease control, and fertility;
- The safe handling and proper application of pesticides and fertilizers;
- Toxicity of pesticides to human and nontarget organisms;
- Proper cleaning, disposal and containment techniques;
- Effects of pesticides on ground water;
- The use of conveying or handling equipment;
- And, expressly because of the frequent proximity of application to human habitations, practical knowledge of application methods that minimize or prevent hazards to humans, pets, and other domestic animals.
That last clause is why Kentucky wrapped this category in 302 KAR 26:080: written information at contract and at each application, a posted marker to prescribed specifications, prior notification on request to customers, employers, and adjoining neighbors, and a thirteen-item record set. Section 2.4 covers those duties in full; a Category 3 licensee should treat them as part of the category standard, because Section 6 of that regulation makes each failure separately citable.
Kentucky-specific technical content: cool-season turf (Kentucky bluegrass, tall fescue) versus warm-season transition-zone bermudagrass; preemergence crabgrass timing; ground ivy, nutsedge, and wild violet control; white grub and billbug management; brown patch and dollar spot; bagworms and scale on ornamentals; and the fact that Category 3 applicators work with impregnated fertilizer, which brings the fertilizer rate and analysis into the 302 KAR 26:080 Section 5 record list.
Category 5: Aquatic Pest Control
Section 3(5) scope. Persons applying or supervising the application of any pesticide purposefully applied to standing or running water. The regulation adds a cross-over: applicators holding a public health license and engaged in public-health-related activities may make applications requiring an aquatic pest control license - a reciprocity that runs one direction only. A Category 5 licensee does not thereby acquire Category 8 authority.
Section 5(5) competency. Practical knowledge of:
- The characteristics of various aquatic use situations;
- The potential for adverse effects on non-target plants, fish, birds, beneficial insects, and other organisms in the treated aquatic environment and downstream; and
- The principles of limited area application.
"Downstream" and "limited area application" are the two operative phrases. Aquatic treatments do not stay where you put them, and the standard remedy for the oxygen problem is to treat a portion of the water body at a time.
| Aquatic technical area | Why it matters |
|---|---|
| Acre-foot volume math | Aquatic labels dose by volume, not surface area. 1 acre-foot = 43,560 cubic feet = 325,851 gallons. Average depth must be measured, not guessed. |
| Dissolved oxygen crash | Killing a heavy stand of vegetation all at once puts the decomposing biomass into the water; bacterial decay strips oxygen and kills the fish. Treat in sections, typically a third to a half at a time, with days between - this is exactly what "limited area application" means. |
| Weed botany | Submersed (hydrilla, coontail, Eurasian watermilfoil), floating (duckweed, watermeal), emergent (cattail, willow), and filamentous algae each require different products and placement. |
| Copper toxicity | Copper products are toxic to fish at low margins, and the margin narrows in soft, low-alkalinity water. |
| Downstream and use restrictions | Irrigation, livestock watering, swimming, and potable use restrictions on the label; flowing water carries the treatment to the next landowner. |
| Permitting | Applications to waters of the Commonwealth may require coverage under the Kentucky Division of Water's pesticide general permit; confirm before treating flowing or public water. |
Category 6: Right-of-Way Pest Control
Section 3(6) scope. Persons applying or supervising the application of pesticides in the maintenance of public roads, utility lines, pipelines, railway rights-of-way, or other similar areas.
Section 5(6) competency. Practical knowledge of:
- The types of environments (terrestrial and aquatic) traversed by rights-of-way - a single corridor crosses cropland, pasture, forest, wetland, stream crossings, and residential frontage in a few miles;
- Recognition of target pests;
- Techniques to minimize non-target exposure, runoff, drift, and excessive foliage destruction;
- The potential for phytotoxicity due to a wide variety of plants and pests to be controlled; and
- Persistence beyond the intended period of pest control.
"Excessive foliage destruction" is a phrase unique to this category, and it captures the public-perception problem: a brown-out along a highway or a utility corridor generates complaints and political pressure even when it is agronomically defensible. Selective, low-volume basal and cut-stump treatments that leave a compatible low-growing plant community are both better vegetation management and better public relations.
| Right-of-way technical area | Kentucky application |
|---|---|
| Selective vs. bare-ground residual | Bare ground is appropriate at substations and guardrail bases; broad bare-ground strips along rural roads invite erosion and complaints |
| Boomless and off-center nozzles | Wide swaths from a truck, with correspondingly higher drift potential - the reason nozzle choice and wind discipline matter more here |
| Basal bark, cut-stump, and hack-and-squirt | Woody control with minimal off-target exposure |
| Tree growth regulators | Extend utility trimming cycles rather than removing vegetation |
| Karst and drainage | Roadside ditches and sinkholes are direct conduits (Section 5.2); route treatments away from open features |
| Adjacent sensitive crops | Tobacco, grapes, gardens, and organic operations often sit against a right-of-way fence line |
Because a right-of-way frequently crosses water, a Category 6 applicator applying a pesticide purposefully to standing or running water needs Category 5 as well. The Category 6 license covers the corridor; it does not authorize deliberate aquatic treatment.
Exam Alert: Three phrases to hold. Category 3: "because of the frequent proximity of application to human habitations." Category 5: "the principles of limited area application" and the acre-foot conversion 325,851 gallons. Category 6: "excessive foliage destruction."
A Kentucky Category 5 applicator plans to treat a heavy stand of submersed vegetation in a two-acre farm pond in July. What does the principle of limited area application in 302 KAR 26:020 Section 5(5) require, and why?
A Kentucky commercial applicator holds only Category 3. A customer asks them to treat filamentous algae in the golf course irrigation pond. What is required?
Which requirement appears in the Section 5(6) right-of-way competency standard and nowhere else in 302 KAR 26:020?