Ag Drone Spraying in Fresno County, CA for Orchards and Vineyards

Ag drone spraying rates in Fresno County

Ag drone spraying in Fresno County, CA is priced per acre, per pass, application only. California drone rates run $14–22 per acre for row crops and $18–35 for orchards and vineyards, and Fresno-area marketplaces quote $18–40 for specialty crops. UC's 2024 almond cost study uses $40 per acre for a custom air-blast pass. Our rates:

Service	Typical rate	Notes
Almond and pistachio fungicide	from $18/acre	Bloom, Botryosphaeria, Alternaria
Vineyard mildew program	from $18/acre	Sulfur and protectant sprays
Citrus insecticide	from $20/acre	Under PCA recommendation
Row crops	from $15/acre	Tomatoes, cotton, alfalfa, garlic
Orchard floor and berm weeds	from $16/acre	Strip and spot work

Blocks under 20 acres are billed as 20 acres. Product is extra, supplied by you or sourced through your PCA. Quotes reflect tree height, gallons per acre on the label, block shape, and any school or restricted-material timing.

The top farm county in the country

Fresno County's 2024 crop report reached $9.03 billion, the first US county above $9 billion. Fruit and nut value rose about 19% in a single year.

Commodity	2024 value
Almonds	$1.45 billion
Grapes (raisin, wine, table)	about $1.0 billion
Pistachios	about $860 million
Cattle, milk, poultry	top 10
Tomatoes, peaches, garlic, oranges	top 10

The county has about 167,000 bearing acres of pistachios, more than any other county in the US, and about 142,000 acres of grapes, most of them raisin varieties. That makes ag drone spraying in Fresno County mostly orchard and vineyard work.

Almond and pistachio spray calendar

UC IPM timing for the nut crops that dominate Fresno County:

Window	Crop	Target
February	Almonds	Bloom fungicide at 60–80% bloom
March	Almonds	Zinc and disease follow-up
May	Almonds	Mites
Early June	Pistachios	Botryosphaeria, after rain; mealybug crawlers
May to July	Pistachios	Navel orangeworm flights, leaffooted bug and stink bugs
Mid-July on	Pistachios	Alternaria
1% hull split	Almonds	Navel orangeworm, then a second spray 10–21 days later

Air-blast benchmarks for hull split run 150–200 gallons per acre, so drone passes there are set by the label and your PCA's coverage target. Drones fit bloom, disease and border-row work best.

Powdery mildew and the dawn window

Powdery mildew is the main disease pressure on San Joaquin Valley grapes, and Fresno County saw high pressure in 2023. Sulfur can't go on above roughly 90–95°F, which leaves a short morning window in summer. A drone can cover 40–80 acres of vines in a day, flying from sunrise to about 10–11 a.m. UC IPM favors air-blast from 20–50% bloom through berry set, so drones fit best on early-season protectant sprays and on blocks where wet middles keep tractors out.

West side and east side

Area	Typical crops	Drone fit
West side (Firebaugh, Mendota, Huron, Coalinga)	Large almond and pistachio blocks, tomatoes, cotton, garlic	Big blocks, long rows, row-crop passes
East side (Sanger, Reedley, Selma, Kingsburg, Orange Cove)	Raisin and table grapes, stone fruit, citrus	Smaller blocks, mixed crops, homes nearby
Kings River and San Joaquin River bottoms	Mixed orchards and row crops	Wet ground after irrigation

Winter tule fog grounds drones, so dormant and bloom work is planned around clear mornings.

Citrus under the psyllid quarantine

All of Fresno County has been under the Asian citrus psyllid quarantine since 2016, and CDFA ran an ACP treatment program in the county in 2025. East-side citrus near Orange Cove, Sanger and Reedley needs regular insecticide programs. Drones treat blocks where trucks and air-blast rigs can't keep up with timing.

PCA recommendations, permits and SprayDays

California adds steps that most states don't have:

1. Written PCA recommendation: a licensed Pest Control Adviser writes the recommendation before the application.
2. Restricted materials: these need a permit from the Fresno County Agricultural Commissioner and a Notice of Intent, filed electronically through CalAgPermits since February 2025.
3. SprayDays: restricted-material applications are posted publicly 24 hours ahead on a 1-square-mile grid.
4. Use reports: Pesticide Use Reports go to the Commissioner by the 10th of the following month.

Operators build these steps into the schedule so the flight happens when the permit and the weather line up.

Schools and the quarter-mile rule

Within a quarter mile of a K-12 school or licensed child care center, aerial applications, including drones, are not allowed Monday to Friday between 6 a.m. and 6 p.m. Growers also send the school and the Commissioner an annual notice by April 30. Many east-side blocks near Sanger, Selma and Kingsburg fall inside these buffers, so flights there are booked for evenings or weekends.

California licensing for drone application

The California Department of Pesticide Regulation (DPR) requires a Qualified Applicator Certificate plus an Unmanned Pest Control Aircraft Pilot Certificate, starting at the Apprentice level, and a Pest Control Business license. Operators register each year with the Fresno County Agricultural Commissioner. The FAA requires Part 107, Part 137 and, for drones of 55 pounds or more, a Section 44807 exemption. If a label limits aerial use to fixed-wing or helicopter, a drone can't apply that product.