Types of nets

Today, a lot of fruit crops are protected with foil systems. All open areas in such systems, including ventilation systems, have to be provide with exclusion nets. When entering the exclusion netting systems, the nets have to be closed immediately. Also in short time, Spotted Wing Drosophila flies can enter the exclusion netting system and start to reproduce. Additionally, netted locks should be installed and the headland should be netted. Installation of lateral nettings have already shown success but complete nettings increase the efficiency, especially adjacent to slopes or next to forests.

The net-cost calculation tool developed in the project can be used to determine the potential costs.
Calculation tool "Net-Cost calculator"

Examples for exclusion nettings systems in demonstration project:

Lateral exclusion netting of foil canopys
Exclusion netting of all open areas in a modern commercial foil exclusion netting system of cherries (D.-A. Ungan, JKI Dossenheim)	Interior view of canopied and netted headland of a modern commercial foil exclusion netting system of cherries (© B. Boehnke, JKI Dossenheim)
View on lateral netting of a modern commercial foil exclusion netting system of cherries (© B. Boehnke, JKI Dossenheim)	View on selfmade lateral exclusion netting of foil canopy of cherries (© S. Benz, LWK NRW)
In order that exclusion netting system should not be so visually visible in landscape can be used black nets (© M. Falagiarda, Laimburg)
Foil tunnels with exclusion netting of all open areas
Modern big foil tunnel with lateral exclusion netting (raspberries) (© K. Kramer, OVR)	Elecrically lateral ventilation system with fine meshed nets in modern foil tunnel (© K. Kramer, OVR)
Individual raspberry foil tunnel with completely exclusion netting (© B. Boehnke, JKI Dossenheim)	Individual blueberry foil tunnel with complete exclusion netting (© C. Augel, LTZ Augustenberg)
Several parallel foil tunnels with complete exclusion netting (© C. Augel, LTZ Augustenberg)
Further systems with additional installed exclusion nets to avoid Spotted Wing Drosophila
With rain canopies protected raspberries within a self-constructed netted cage (© S. Benz, LWK NRW)	Entrance area with zip lock of self-constructed net cage (© S. Benz, LWK NRW)
Glas house with exclusion netting between glas and fruit crop (blackberries) (© B. Boehnke, JKI Dossenheim)	Interior view 1: Glas house with exclusion netting between glas and fruit crop (blackberries) (© B. Boehnke, JKI Dossenheim)
Interior view 2: Glas house with exclusion netting between glas and fruit crop (blackberries) (© B. Boehnke, JKI Dossenheim)	Interior view 3: Glas house with exclusion netting between glas and fruit crop (blackberries) (© B. Boehnke, JKI Dossenheim)
Exclusion netting systems without foil protection
Netted parallel tunnel racks with blueberries  (© B. Boehnke, JKI Dossenheim)	Netted tunnel rack with blueberries  (© S. Benz, LWK NRW)
Top view on netted canopy system without foil protection (© D.-A. Ungan, JKI Dossenheim)	Netted canopy system of blueberries without foil protection  (© B. Boehnke, JKI Dossenheim)
Top view on self-constructed complete exclusion netting of blueberries without any foil system (© D.-A. Ungan, JKI Dossenheim)	Lateral view on self-constructed complete exclusion netting of blueberries without any foil system (© C. Augel, LTZ Augustenberg)
Interior view on self-constructed complete exclusion netting of blueberries without any foil system (© D.-A. Ungan, JKI Dossenheim)
Lateral exterior view on lateral exclusion netting without any protection above blackberry culture (© C. Augel, LTZ Augustenberg)	Interior view on lateral exclusion netting without any protection above blackberry culture (© C. Augel, LTZ Augustenberg)
Installation of quickly accessible entrance area
Electrically operated gate of a lateral netted foil canopy with netted headland (cherries) (© S. Benz, LWK NRW)	Complete netted gate of a lateral netted foil canopy of cherries (© S. Benz, LWK NRW)
Quick opening gate of a modern commercial foil exclusion nettin system of cherries in closed state  (© D.-A. Ungan, JKI Dossenheim)	Quick opening gate of a modern commercial foil exclusion netting system of cherries in open state (© B. Boehnke, JKI Dossenheim)
Simple entrance area with wire rope hoist in a lateral netted foil canopy system of cherries (© B. Boehnke, JKI Dossen-heim)	Entrance area of a lateral netted foil canopy system of cherries (© J.-H. Wiebusch, LWK Niedersachsen)
Foil tunnel with overlapping nets in the entrance area  (© S. Benz, LWK NRW)	Foil tunnel with overlapping nets in the entrance area (© S. Benz, LWK NRW)
Interior view on overlapping nets in the entrance area of a foil tunnel (© C. Augel, LTZ Augustenberg)	Interior view on overlapping nets in the entrance area of a foil canopy (© C. Augel, LTZ Augustenberg)
Entrance area of self-constructed net cage with zip lock  (© S. Benz, LWK NRW)
Exclusion netting of headland
Modern foil tunnel with netted eletrically lateral ventilation system and rack for exclusion netting of headland with additional lock function (© K. Kramer, OVR)	Netted headland with addition lock function of a modern foil tunnel (© K. Kramer, OVR)
Installation of locks
Foil canopy of raspberries with lateral exclusion netting and netted lock (© S. Benz, LWK NRW)	Netted raspberry foiltunnel with self-constructed lock (© B. Boehnke, JKI Dossenheim)
Netted raspberry foiltunnel with professional netted lock, optimized by LWK NRW (© S. Schrey, LWK NRW)	Complete netted raspberry row with self-constructed netted lock (© B. Boehnke, JKI Dossenheim)
House and allotment garden It is also appropriate to net cultures in house or allotment gardens. Complete trees or also only part of plants should be netted.
Commercial net bags for the exclusion netting of individual trees (© H. Vogt, JKI Dossenheim)	Self-constructed net cage (roof battens)  (© H. Vogt, JKI Dossenheim)
Self-constructed net cages (water pipes) for the exclusion netting of individual cherry trees (© H. Vogt, JKI Dossenheim)	Fine-meshed net bag for exclusion netting of individual shoots with fruits (© F. Briem, JKI Dossenheim)
Installation of a self-constructed exclusion netting system for a row of raspberries:
Self-constructed metall rack (water pipes) with cushioning and straps for stabilisation and protection of exclusion net (© H. Vogt, JKI Dossenheim)	Lifting of exclusion net on self-constructed metall rack with help of brooms (© H. Vogt, JKI Dossenheim)
Covering of self-constructed metall rack with exclusion net (© H. Vogt, JKI Dossenheim)	With exclusion net covered self-constructed rack with adequate overlapping net. In next step, the fixation to the ground level and additional stabilisation of exclusion netting system have to be done (© H. Vogt, JKI Dossenheim)
Net overhang was rolled up on wooden beam and exclusion netting system was fixed with sand bags to the ground level. Additionally, plastic fabric was underlaid to protect the net to weed growth (© B. Boehnke, JKI Dossenheim)	Ground level fixing by rolling up overlapping net in wooden beams and additional ballasting with sand bags and sand. Risk: Net damages by weed growth (© B. Boehnke, JKI Dossenheim)
For stabilisation, exclusion net was fixed with additional straps and rack was fixed with lashing straps (© B. Boehnke, JKI Dossenheim)	Use of pollinators (Bombus terrestris terrestris) in netted raspberry system (© B. Boehnke, JKI Dossenheim)