Hybrid R · Raspberry

Growing Raspberry in a
Hybrid R Multi-Tunnel

Delicate fruit made profitable with humidity control and birdproofing. The Hybrid R delivers +25 to 40% vs. open field with birdproof ventilation, wide-span oval-tube construction, and Geometet® bolt-grade corrosion resistance.

Technical Specs

Hybrid R × Raspberry, At a Glance

6.4 to 9.6 m

Ideal Width

55 to 75°F (13 to 24°C)

Temperature

55 to 65%

Humidity

Perennial floricane / annual primocane

Cycle Length

+25 to 40% vs. open field

Yield Gain

90 km/h (56 mph)

Wind Rating

Geomet® · ASTMB117-11

Bolt Standard

+30% vs. standard

Steel Strength

Structural Fit

Why the Hybrid R is the Right Structure for Raspberry

Raspberries are among the most weather-sensitive crops in North American horticulture, rain during bloom causes botrytis, birds consume up to 15% of ripe fruit, and early fall frost terminates the primocane harvest window prematurely. The Hybrid R solves all three: the poly film intercepts rain before it contacts flowers and fruit, the birdproof venting physically excludes birds and spotted wing drosophila, and the thermal mass of the enclosed structure pushes the last harvest date 3 to 5 weeks later in fall. The wide span allows trellis rows at full commercial spacing without structural interference.

Yield Gain

+25 to 40% vs. open field

vs. open-field production

Ideal Width

6.4 to 9.6 m

bay width for Raspberry

Cycle

Perennial floricane / annual primocane

production cycle

FAQ

Raspberry in a Hybrid R, Common Questions

Is a multi-tunnel structure effective for raspberry production?
Multi-tunnel systems like the Hybrid R are now considered best practice for premium raspberry production in the Pacific Northwest and Great Lakes regions. Rain exclusion is the single most impactful factor, even a single rain event during peak ripeness can reduce marketable yield by 20 to 30% through botrytis and fruit softening. Growers using the Hybrid R consistently report marketable yield rates above 90% versus 65 to 75% in open-field plantings.
How wide does a raspberry tunnel need to be?
Commercial raspberry trellis rows require 1.8 to 2.4 m between row centers for equipment access and cane management. A 6.4 m wide Hybrid R bay accommodates 2 full double rows with a center aisle, while the 9.6 m configuration fits 3 full rows, the most economical footprint for large-scale production. Rows shorter than 6 m wide create cane-to-structure interference that limits pruning and harvest efficiency.
What is the biggest pest threat to raspberries in a greenhouse tunnel?
Spotted wing drosophila (Drosophila suzukii) is the primary pest concern for tunnel raspberry production. Unlike most drosophila species, SWD attacks ripe and nearly ripe fruit, depositing eggs inside berries and rendering them unmarketable. The Hybrid R's insect-screen venting, when properly maintained, creates a physical exclusion barrier that reduces SWD infestation rates by 70 to 85% compared to open-field plantings, often eliminating the need for insecticide applications during harvest.
Can I grow fall-bearing (primocane) raspberries in a Hybrid R?
Primocane varieties like Polana, Himbo Top, and Joan J are ideal for Hybrid R production because the structure extends the September, November harvest window by 3 to 5 weeks in northern states. These varieties produce fruit on first-year canes, simplifying the trellis system and eliminating the need for double-cane management. A 50 m bay planted with primocane raspberries at 0.5 m in-row spacing can yield 8,000 to 10,000 kg/ha annually.

Ready to Grow Raspberry in a Hybrid R?

Our team will design the right Hybrid R configuration for your Raspberry operation, crop rows, bay width, ventilation, and optional gutters. Nationwide service.

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