Excluding pests from growing areas is the most effective control method. Some growers have reduced their pesticide use by 90% using LS ECONET in combination with insect-free stock and good sanitation. In addition to being the most effective, it is also the least expensive form of prevention.
Plan your crop production and IPM program in advance. Using good sanitation and exclusion is the key to properly managing your growing environment. Design you ventilation system to handle the pressure loss from insect screens.
Common name |
Scientific name |
Insect critical dimension,mm* |
|
| Western flower thrip |
Frankliniella occidentalis |
0,215 |
|
| Silverleaf whitefly |
Bemisia argentifolii |
0,239 |
|
Greenhouse whitefly |
Trialeurodes vaporariorum |
0,288 |
|
| Melon aphid |
Aphis gossypii |
0,355 |
|
| Green peach aphid |
Myzus persicae |
0,434 |
|
| Serpentine leafminer |
Liriomyza trifolii |
0,608 |
|
* Sources: Bethke 1994
Here are some helpful tips for excluding insects from your greenhouse:
- LS ECONET generally must have openings as small or smaller than the insects it excludes.
- Any LS ECONET will reduce the number of insects migrating into crops.
- LS ECONET must be sized appropriately to avoid hampering ventilation.
- Use LS ECONET to screen vents and doorways.
- Keep doors closed, except when entering or leaving the greenhouse.
- Construct a screened vestibule at greenhouse entrances. Workers and equipment must pass through a plant-free space between two sets of doors before entering the growing area.
- Create a positive pressure entrance by installing fans so that they blow into the space between the doors causing air to flow from inside to outside.
- LS ECONET must be cleaned periodically. Use a stream of water to wash from inside to out.
DATA ABOUT SVENSSON® LS ECONET
| LS ECONET |
Air flow reduction, % |
Light transmission direct, % |
Hole size
(mm) |
Standard width |
|
|
|
|
|
| B |
5 |
90 |
1 X 4 |
13' 9" |
| L |
25 |
84 |
0,6 X 0,6 |
10' 6" |
| M |
30 |
90 |
0,4 X 0,45 |
10' 10" |
| SF MAX |
25 |
97 |
0,3 X 0,75 |
10' 6" |
| T |
40 |
85 |
0,15 X 0,35 |
11' 2" |
| S |
45 |
91 |
0,14 X 0,14 |
11' 2" |
LS ECONET screens carry a warranty against UV degradation: 3 years for outdoor use and
5 years for indoor use. Longevity in most climates is 5 to 8 years.
* Sources:
Bethke, J.A., and T.D. Paine. 1991 Screen hole size and barriers for exclusion of insect pests of glasshouse crops. J. Entomol. Sc. 26: 169-177. Bethke, J.A., R.A. Redak, and T.D. Paine. 1994. Screens deny specific pests entry to greenhouses. Calif. Agric. 48 (3):37-40.
The above information is given in good faith, but without any warranty. Freedom from patent rights and registered trademarks must not be assumed. Svensson is a registered trademark owned by AB Ludvig Svensson. LS ECONET screens are not flame retardant.
|
