The use of frost fans is important when it comes to protecting crops from frost damage which can cause reduced yield and loss of revenue. The fans use the warmer air in the inversion layer (which can generally be found from 10-50 metres above the ground.) by angling the blade slightly downwards to pull the inversion layer down to ground level and blow it into the orchard or vineyard. Frost fans are turned on before a frost occurs, usually 0.5 to 1.5°C above freezing. Frost fans are subject to rules within district plans which can be found here.
Audible Bird Scaring Devices
Audible bird scaring devices can cause distress to neighbours if operated outside of noise rules. To help with the safe and compliant operation with these devices, NZKGI has compiled a fact sheet which contains the rules for each kiwifruit growing region. These rules are effective from September 2020 and can be found here.
Artificial Crop Protection Structure and Shelter Belt Guidance
NZKGI (along with HortNZ) have provided some guidance on artificial crop protection structures and shelter belts that can help with decision making on your orchard. You can see the guidance material here or alternatively contact NZKGI, Senior Policy Analyst, Sarah Cameron here.