Since 1998 we have been evaluating the potential for using high tunnels to enhance productivity and profitability of producing vegetable crops in Saskatchewan. High tunnels are similar to low tunnels in design and function, except that;
- one high tunnel covers several rows,
- the high tunnels are wide enough to allow crop growth to full maturity under the tunnels and
- the tunnels are tall enough to allow spraying, cultivation and harvesting to occur with the tunnels intact.
Rolling up the sides and/or opening the end doors of the high tunnels provide both ventilation and access to the crop by pollinating insects.
The initial costs of materials and installation of high tunnels are considerably higher than traditional low tunnels. However, the economics of production with high tunnels may still be favourable if;
- they increase yields,
- they enhance earliness resulting in greater market access at a time when prices are at a premium,
- the high tunnels are durable enough to be used for several seasons, thereby amortizing the costs of materials and installation over a greater length of time.
Below is a collection of articles on high tunnel research written since 1998. The articles are available in HTML or as PDF files.
Temperature Comparison PDF
Temperature observations from 1998 – 2000 have been analyzed and compared.
Powerpoint Presentation High Tunnel Technology – Taking the Next Step (3.2 MB)
The risks and benefits of high tunnels are discussed High tunnel technology is compared with low tunnels and other crop covering technology.