Drone Spraying in Hidalgo County, TX for Citrus, Cotton and Grain

Drone spraying prices in Hidalgo County

Drone spraying in Hidalgo County, TX is quoted per acre, application only. Texas A&M AgriLife's 2026 custom rates for South Texas put aerial herbicide at $11.72 per acre, aerial insecticide or fungicide at $10.65, defoliant at $10.51 and brush work at $13.43. Drone directories list orchard work at $18–35. Our rates:

Service	Typical rate	Notes
Insecticide or fungicide	from $10/acre	Cotton, sorghum, corn
Cotton defoliation	from $10/acre	Harvest aids
Row-crop herbicide	from $11/acre	Pre-plant and in-season
Brush and ditch banks	from $13/acre	Field edges
Citrus	from $18/acre	Psyllid, mites, fungicide

Each visit has a $250 minimum. Product is billed separately. Quotes reflect canopy height, canal and road edges, airspace near the border and the spray volume on the label.

Vegetables, citrus, cotton and grain

Crops made up 94% of Hidalgo County's $386 million in farm sales in the 2022 Census of Agriculture, led by $191 million in vegetables and melons and $56 million in fruit, mostly citrus.

Crop	2022 acres
Corn for grain	41,750
Cotton	38,836
Vegetables	30,475
Grain sorghum	26,661
Orchards	23,229
Irrigated land	124,154

Of the county's 2,045 farms, 71% are under 50 acres. Drone spraying in Hidalgo County fits those small, irrigated blocks between canals, roads and homes.

Citrus: psyllids, greening and fruit fly

The first Texas tree with citrus greening (HLB) was found in San Juan in 2012, and Hidalgo County has been under an HLB quarantine since. The Texas Citrus Pest & Disease Management Corporation coordinates area-wide Asian citrus psyllid control, including winter dormant sprays. In January 2026, a Mexican fruit fly detection set off a roughly 50-square-mile quarantine near Granjeno.

Pest or disease	When AgriLife flags it
Citrus rust mite	Any time after bloom
Melanose	Fruit in March–April, leaves after the spring flush
Greasy spot	Mainly summer
Scale insects	Summer

Cotton in the Lower Rio Grande Valley

The Valley is an active boll weevil eradication zone, and cotton stalks must be destroyed by September 1. Fleahopper, cotton aphid and whitefly are the main in-season pests, and harvest aids go on in July and August. A drone can defoliate fields bordered by homes or canals where ground rigs and planes struggle.

Sorghum and sugarcane aphid

Sugarcane aphid peaks around bloom in April and May. AgriLife's cues are glistening honeydew, sticky leaves and sooty mold, and it stresses getting spray into the lower canopy, so drone volume and droplet size are set by the label for each field. Headworms and rice stink bugs show up at soft dough.

Water, canals and changing crops

Irrigation districts feed the county through a web of canals, and Falcon Reservoir sat at a small fraction of capacity in 2025. The Santa Rosa sugar mill closed in 2024 after years of water shortages, so former cane ground is shifting to other crops. Operators map canals, laterals and drains as no-spray zones and use only products labeled for use near water.

Flat delta ground

Field condition	Ground sprayer	Spray drone
Fields just irrigated	Ruts, stuck rigs	No soil contact
Citrus blocks next to homes	Drift complaints	Mapped buffers
Small blocks between canals	Awkward turns	Mapped edges
Cotton at defoliation	Damages open bolls	No crop contact

Border airspace and refuges

Current FAA notices restrict civilian drones within about 1 nautical mile of the U.S.–Mexico border, with waivers handled through U.S. Customs and Border Protection, and a National Defense Area runs along the Rio Grande. McAllen International Airport has Class D airspace. Santa Ana and Lower Rio Grande Valley wildlife refuges dot the river. Operators check airspace for every field, file approvals ahead of time and map refuges and homes as no-spray zones.

Onions, melons and leafy greens

Vegetables and melons are Hidalgo County's largest crop group by sales. Onions go in during fall and are harvested in spring, while cantaloupes, watermelons, cabbage and leafy greens rotate through the cooler months. These are high-value, short-season crops where timing matters more than acres, and many blocks are only 10 to 40 acres between canals and packing sheds. Drones suit fungicide passes on onions after rain and insecticide passes on melons when ground rigs would crush vines. Operators confirm every product is labeled for aerial use on that crop and note pre-harvest intervals on the application record.

A Hidalgo County spray year

Window	Typical drone work
December to February	Citrus psyllid dormant sprays
February to March	Corn and sorghum planting, pre-plant herbicide
April to May	Sugarcane aphid at sorghum bloom
March to summer	Citrus rust mite, melanose, greasy spot
July to August	Cotton defoliation

Texas licensing for drone application

The Texas Department of Agriculture (TDA) requires a Commercial Applicator license with the Aerial category plus a use category such as Field Crops or Fruit, Nut and Vegetable. Hidalgo County isn't on TDA's regulated-herbicide list. The FAA requires Part 107, Part 137 and a Section 44807 exemption for drones of 55 pounds or more.