16.1 Categories 21, 22, 24 (Plant, Animal, Ornamental & Turf)

16.1 Categories 21, 22, 24 (Plant, Animal, Ornamental & Turf)

Quick Answer: The category exam is the second half of the Georgia commercial sitting. Score 70% on General Standards and on at least one major category. Rule 40-21-3-.01(b) lists what GDA tests. Category 21 is Georgia plant agriculture (tobacco, peanuts, cotton, grains, soybeans, forage, vegetables, small fruits, tree fruits/nuts, grassland) plus PHI, REI, phytotoxicity, soil/water, and nontarget/community problems. Category 22 is livestock/poultry, residues, and hazards from formulation, age, and stress, including veterinarians who apply for hire. Category 24 is ornamental and turf: mixed-planting phytotoxicity, drift, persistence, and hazards to humans and pets. Recert hours (Chapter 3) are 10 for 21 and 24 and 6 for 22.

The computerized exam at a Georgia technical college is two must-pass papers on one 2.5-hour clock. Rule 40-21-3-.01 says every commercial applicant is examined on general standards and additional standards specific for each category. Passing labels and PPE does not certify you to treat Tift County peanuts, Hall County broiler houses, or Gwinnett County lawns. Those jobs are 21, 22, and 24.

GDA prints numbers (21–41) on licenses. Rule 40-21-2 still uses letters (a)–(r). Rule 40-21-3-.01(b) numbers competency clusters 1. through 13. Those three systems do not line up one-for-one. Cluster 1 is Plant (GDA 21). Cluster 2 is Animal (GDA 22). Cluster 4 is Ornamental and Turf (GDA 24). Cluster 3 is Forest (GDA 23) — next section. Sit the GDA number that matches the site, and study the competency bullets for that number.

Category 21 — Agricultural Plant Pest Control

Rule 40-21-2-.01(a) and GDA's category page define Category 21 as commercial applicators using or supervising restricted-use pesticides (RUPs) or state-restricted uses in production of agricultural crops, including, without limiting, tobacco, peanuts, cotton, feed grains, soybeans, and forage, vegetables, small fruits, tree fruits and nuts, plus grasslands and non-crop agricultural lands. A custom applicator spraying other growers' fields for a fee is on the commercial path — typically General Standards plus 21.

Rule 40-21-3-.01(b)(1) requires practical knowledge of seven items. Treat them as the Category 21 skeleton.

Crops grown in the operational area. Georgia is not one crop. Southwest Georgia (Tift, Colquitt, Worth, Early, Decatur) is peanut and cotton country. Middle Georgia around Fort Valley and Peach County is peach country. Dougherty County / Albany is a pecan belt. Bacon County / Alma is blueberry country. The Vidalia onion district (Toombs, Tattnall, and adjoining counties) is a high-value vegetable site. Tobacco still appears in south Georgia rotations. Soybeans, corn and other feed grains, forage, pasture grassland, and non-crop farm lanes and ditch banks are statewide. The standard is know the crops you will treat, not "agriculture in general."

Specific pests. Match pest, crop, and timing: cotton bollworm complexes, peanut leaf spot and lesser cornstalk borer, pecan scab and hickory shuckworm, peach scale and plum curculio, Vidalia onion thrips, blueberry spotted-wing drosophila. A national pest list that ignores Georgia crops is not Category 21 competency.

Soil and water problems. Sandy Coastal Plain soils leach soluble herbicides toward groundwater. Piedmont clays hold residues that carry over into a following crop. Chemigation on peanut and vegetable ground must respect Georgia's anti-siphon statute (O.C.G.A. § 2-1-4): a check valve plus low-pressure drain between pump and injection. Picture Flint and Chattahoochee drainages, irrigation wells, and farm ponds — not a generic creek.

Pre-harvest intervals (PHI) and restricted-entry intervals (REI) are different clocks. PHI is the wait from last application until harvest so residues on food or feed stay within tolerance. REI is the Worker Protection Standard wait before workers enter without the label's early-entry PPE. A Tifton peanut fungicide may carry a 14-day PHI and a 24-hour REI. Digging at day 8 because "the vines look ready" is a PHI violation even if the REI expired yesterday. Sending a cotton topping crew in at hour 8 of a 24-hour REI is an REI violation even if harvest is months away. Category 21 items love that swap.

Phytotoxicity is crop injury from the pesticide — rate too high, incompatible tank-mix, heat, or a herbicide the rotational crop cannot tolerate. Cotton is sensitive to some growth-regulator herbicides that pastures and rights-of-way use legally. A legal pasture spray that moves onto a neighbor's cotton is both phytotoxicity and a community problem.

Environmental contamination, nontarget injury, and community problems. Agricultural applications sit next to schools, organic neighbors, beeyards (critical during pecan and blueberry bloom), fish ponds, and houses that used to be farm edge. Drift, runoff after a south Georgia thunderstorm, and treating during bloom are the classic Category 21 community failures.

Worked field judgment. A Colquitt County custom applicator is hired to apply a residual herbicide on peanuts next to cotton and a county road with a school-bus stop. Category 21 competency is not "the peanut rate on the label." It is: Is this product labeled for peanuts? What is the PHI if the grower may dig early? What is the REI for scouts? Will sandy soil plus forecast rain move the herbicide to groundwater or the neighbor's cotton (phytotoxicity)? Is the bus stop a community exposure if the boom is not cut off at the headland? Those seven Rule 40-21-3 bullets, applied to one Georgia field, are the exam.

Category 22 — Animal Agriculture Pest Control

Rule 40-21-2-.01(b) covers RUPs and state-restricted uses on animals — beef cattle, dairy cattle, swine, sheep, horses, goats, poultry, and livestock — and places on or in which animals are confined. It expressly includes Doctors of Veterinary Medicine who apply pesticides for hire, who publicly hold themselves out as pesticide applicators, or who engage in large-scale pesticide use. A clinic DVM treating one farm-call horse is not automatically Category 22. A DVM who advertises premise spraying of broiler houses around Gainesville (Hall County) is.

Rule 40-21-3-.01(b)(2) requires practical knowledge of the animals, the pests, specific pesticide toxicity and residue potential, and relative hazards associated with formulation, application techniques, age of animals, stress, and extent of treatment.

Georgia's animal map is poultry-heavy in the north (Hall, Jackson, and nearby broiler and layer complexes) and cattle and pasture across the Piedmont and south. Dairy herds, swine, horses, and goats appear in mixed operations. Pests include horn flies and lice on cattle, mites and darkling beetles in poultry houses, and premise flies in confinement.

Residue is the Category 22 trap. Many animal pesticides carry slaughter withdrawal, milk discard, or egg restrictions. Treating lactating dairy cows in Putnam or Morgan County with a product labeled only for non-lactating animals, or shortening a slaughter withdrawal so a load can make the sale barn, is a residue violation and a food-safety event. Poultry products have the same logic: a premise treatment that contaminates feed, water, or eggs fails the residue standard even if the birds were not sprayed directly.

Formulation and technique change the hazard. A pour-on, an ear tag, a spray, a dust, a backrubber, and a poultry-house premise fog do not share the same exposure profile. Whole-house space sprays in a heat-stressed broiler house in July can kill birds even when the active ingredient is "correct." Young calves and chicks absorb more dose per body weight. Stressed animals (weaning, transport, heat) tolerate less. Extent of treatment means whole-herd versus spot treatment, and treating the animal versus treating the barn, litter, or lot.

Category 24 — Ornamental and Turf Pest Control

Rule 40-21-2-.01(d) covers RUP and state-restricted uses to control pests in the maintenance and production of ornamental trees, shrubs, flowers, and turf. That is both nursery production (south Georgia woody ornamentals, sod farms) and maintenance (Atlanta-metro lawns, golf, campuses, HOAs).

Rule 40-21-3-.01(b)(4) — numbered 4 in the competency rule, 24 on the GDA card — requires practical knowledge of pesticide problems in production and maintenance; potential phytotoxicity to a wide range of plant material; pesticide drift; persistence beyond the period of pest control; and application methods that minimize or prevent hazards to humans, pets, and other domestic animals.

Mixed plantings are the phytotoxicity engine. A Gwinnett landscape bed may hold azalea, boxwood, crape myrtle, turf, and a vegetable garden the homeowner forgot to mention. A herbicide labeled for bermudagrass fairways can strip St. Augustine, zoysia, or an ornamental bed. Match site, species, and label.

Drift off a golf course or along a Cobb County subdivision street hits pools, playgrounds, and gardens. Persistence after the grub or weed is gone can injure overseeded ryegrass, newly laid sod, or next season's annual color. Humans and pets walk treated turf the same afternoon. Category 24 is where landscape posting (Rule 40-21-9, Chapter 4) and pet/child reentry become operational, not theoretical.

Recertification hours belong in Chapter 3. For these three majors, GDA currently lists 10 hours for 21 and 24 and 6 hours for 22. Hours do not replace a passing category paper.

Competency map you should be able to recite

Exam traps for 21 / 22 / 24

• Sitting 21 does not authorize 24 lawn work; sitting 24 does not authorize 21 peanut custom application.
• PHI is harvest. REI is worker entry. They are not the same clock.
• Category 22 includes DVMs applying for hire and confinement premises, not only "spraying the cow."
• Category 24 phytotoxicity is mixed plantings, not a single crop row.
• Category 35 and SPCC HPC/WDO/FUM are not this section — those traps are in 16.3.