LIGHT ABATEMENTbylaws in effect - Now what?

摘要

Canada's low light and temperatures translate to a high light, high temperature requirement for greenhouse crop production. So what are growers to do, when light abatement bylaws impact not just the way they grow but the way their crops yield? In short, adapt and overcome.In Oct. 2020, the town of Kings-ville, Ont. enacted light abatement bylaws, and in December, Leamington followed with its own requirements. Leamington's bylaw mandates complete closure of light abatement curtains on greenhouse ceilings, side-walls and endwalls one hour before sunset until one hour after sunrise, allowing a 10 per cent gap between 2 am and 6 am. (The provision on sidewalls and endwalls went into effect on Apr. 1, 2021, while the provision on ceiling curtains begins Oct. 1, 2021.) Meanwhile, the regulation in Kingsville does not allow any light to "shine upon the land of others" or"into the dark night sky."