Birds find a vineyard the week the grapes start to sweeten — and by the time you notice the first pecked bunch, the flock has already mapped your block. The defense that works is a physical barrier installed at veraison, before the fruit turns: over-row drape netting for large, flat blocks (applied mechanically with wide bales), side netting for small or sloped vineyards where every meter of fabric counts. Which system fits your rows decides both your bird losses and your cost per hectare. This is the grape-specific guide: timing, the two systems compared, and the wide-bale spec that makes mechanical application possible.
Birds don’t attack green grapes — they attack ripening grapes. The pressure starts at veraison, when color and sugar first appear, and climbs steeply until harvest. Starlings work in flocks that can strip a block in days; the same individuals return daily once they find food. The rule that saves harvests: the net goes on when the first berries turn color, not when the first birds arrive — a flock that never gets its first meal in your block moves on to the neighbor’s instead of settling in. And the net stays until the fruit is picked: removing it “one week early” is removing it during the sweetest week of the year.
Everything in vineyard bird netting comes down to this choice:
| Over-row drape netting | Side (zone) netting | |
|---|---|---|
| Coverage | Whole canopy enclosed — near-100% exclusion | Fruit zone on both sides of the row |
| Fabric per hectare | More (full-width panels) | ~40–60% less (narrow strips) |
| Installation | Fast with a net applicator implement; a tractor and a bale | Manual clipping to trellis wires — labor-heavy |
| Removal & reuse | Mechanical, panels roll back for next season | Manual, slower to recover |
| Best for | Large, flat commercial blocks | Small, steep or irregular vineyards, budget-tight blocks |
The pattern in the market: big wine-grape blocks run drape-over on machinery; small estates and steep terraces run side netting by hand. The deal-breaker for side netting is sealing: a side net left open under the vines is a door, and birds use doors. Labor math favors the machine too — a two-person crew with an applicator covers a hectare in under an hour, where hand-clipped side nets take a crew a full day; over ten seasons, that labor difference usually costs more than the extra fabric ever does.
Mechanical application is why big vineyards can net a hundred hectares in days: a net applicator implement (the Netter Getter type) rides the row, lifts the bale, and lays the panel over the canopy in one pass. The spec that makes or breaks it is bale width: the panel has to span the canopy with slack for the applicator to lay it without snagging — for typical 2.5–3.5 m row spacings, that means 8–12 m wide bales, up to 25 m for multi-row overheads. We knit bird netting to your exact applicator width, 15–35 gsm for drape-over duty (light enough for the machine and the vine, strong enough for the season), with a soft hand so it drapes over canes without catching. Send us your row spacing and applicator model and we cut the bale to fit — that’s a production setting for us, not a special project.
Whatever the system, three details decide exclusion. Close the row ends — an open end of a draped row is a wind scoop and a bird entrance in one; tie or pin the ends down the posts. Secure under tension, not drum-tight — the net should lie snug to the canopy with room for wind movement; a drum-tight panel abrades on the canes all season. And watch the ground line on side nets — clip or pin the bottom edge to the lower wire or the ground itself; the two-fist gap at soil level is where the smart birds go. For deer pressure, the same drape net doubles as the exclusion barrier — deer push on it, they don’t get through it.
Drape panels pulled by machine roll back onto the bale and store for next season — dry, dark, off the ground. A 15–25 gsm knitted HDPE drape net with seasonal handling serves 3–5 harvests; the UV-stabilizer package we dose per batch decides whether it serves two or five. Side nets come off slower but recover the same way. The seasonal cycle is why grape-region distributors stock against the veraison calendar: their customers buy in the weeks before color change, every year, on schedule.
A 40’HQ carries 14–15 tons of bird netting — at drape-over weights, roughly 400,000–900,000 m² per container, enough for hundreds of hectares. We cut bales to your applicator width and row spacing (standard or multi-row overheads), MOQ 2 tons with mixed widths and mesh sizes (15/18/20/25 mm) in one shipment; private-label wraps for distributors stocking a region. Production 25–35 days after deposit; samples free, you cover the courier. Send your row spacing, block size, applicator model (or “side net, manual”) and destination port via the contact page or WhatsApp — we reply within 24 hours with a bale spec, coverage math and loading plan. For the general bird-netting decisions (mesh size by bird species, GSM by duty), the bird net mesh guide and GSM guide cover those.
At veraison — the week the first berries turn color. Birds target ripening fruit, and a flock that never feeds in your block moves on. The net stays on until harvest; taking it off a week early means removing it during the sweetest week of the year.
Drape-over, because it encloses the whole canopy — near-100% exclusion. Side netting uses 40–60% less fabric and works well if the bottom edge is sealed tight to the lower wire or ground; left open underneath, it fails.
The bale must span the canopy with slack for the applicator: typically 8–12 m for standard row spacings, up to 25 m for multi-row overheads. Give us your row spacing and applicator model and we knit the bale to fit.
3–5 harvests for 15–25 gsm drape net with machine recovery and dry, dark storage. The UV-stabilizer package decides whether it’s two seasons or five — we dose it per batch.
Yes — the same over-row net that excludes birds is a physical barrier deer can’t push through. For heavy deer pressure, spec the heavier end of the GSM range so the net survives the pushing.
Net at veraison, keep until harvest. Drape-over for big flat blocks with machine-wide bales; side netting for small or steep blocks with the bottom edge sealed. Send your row spacing and applicator model and we’ll spec the bale — bird netting cut to your rows.
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