Cover crops into standing soybeans and corn
Seed goes on in late summer, weeks before a drill could follow the combine. Drone interseeding trials in Ontario, including OSCIA's Living Lab project, have shown establishment that varies with rainfall, crop and seeding date.
The catch: broadcast seed sits on the surface, so rain within a week, heavy residue, slugs and herbicide carryover decide the result. Results so far are mixed, and we don't promise a stand.
Cover crops after wheat
OMAFA's cover-crop guidance lists oats and radish as a common post-wheat mix, seeded in August. Seeded too early, radish can flower, and oats need time to grow before frost.
The catch: broadcast is less dependable than drilling and needs rain soon after.
Frost-seeding clover
In late winter or early spring, while the ground still freezes at night and thaws by day (often March to early April), clover can be broadcast onto winter wheat or thin hay and pasture. Freezing and thawing work the seed into the soil.
The catch: it works best on thin stands with some bare soil showing, and generally suits clovers better than alfalfa or grasses. The window moves with the weather.
Granular fertilizer on soft ground
In a wet spring, some Ontario growers have used drones to get granular nitrogen onto winter wheat when ground spreaders couldn't run.
The catch: payloads are small, so full-rate bulk fertilizer takes many flights. Fertilizer on saturated or ponded ground raises runoff and loss risk, so we'll tell you when it's better to wait, and any setbacks that apply near wells and watercourses still apply.
Small and hard-to-reach fields
Wet corners, point rows, field edges and odd shapes are workable, with no ground rig crossing soft soil.
The catch: wind moves seed and granules, so we plan no-spread zones near homes, wells, watercourses and neighbouring crops. We assess very steep slopes case by case.
Corn fungicide at tassel
Ontario extension guidance generally puts the best fungicide timing for corn at about tasseling to silking (VT to R1), when one is warranted. By then the crop is tall for ordinary ground sprayers.
The catch: scout first. The label must allow aerial application, and many fungicide labels set a minimum aerial volume of roughly 15 to 20 litres per acre.
Wheat and soybean fungicide
For Fusarium head blight in winter wheat, Ontario guidance generally puts the best timing at about early flowering, when anthers are visible. Soybean white mould programs generally start around R1 to R2, sometimes with a second pass about two weeks later.
The catch: the windows are narrow, labels govern timing and volume, and not every product's label allows aerial use.
Potatoes and Holland Marsh vegetables
Potato late-blight programs and Holland Marsh onion and carrot fungicide programs run repeatedly through summer, and wet weather is when ground rigs struggle most.
The catch: several late-blight and downy mildew products don't have aerial directions on their labels, so we check each one before booking.