The "blackout period" for the use of granule fertilizers typically refers to a time when the application of certain fertilizers is restricted, often due to environmental regulations aimed at reducing nutrient runoff into waterways. These periods are common in areas that are concerned about water quality, particularly in agricultural regions.
The specifics of the blackout period can vary by region, but it generally covers the late spring and summer months when the risk of runoff is highest due to frequent rainstorms. The blackout period usually ends around mid to late September, depending on local regulations and environmental conditions.
For exact dates, you would need to check with your local agricultural extension office or environmental regulatory agency, as they set and enforce these guidelines.
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