It is common to keep produce fields clean only to find a carpet of purslane when preparing ground for the next season. Some of this is from the seed bank that hadn’t yet germinated or been blow or carried into the field but a significant amount comes in the water. We recently worked with Brad Chavez from Greenline Equipment and Jim Nunes from Nunes Farms to test an irrigation water filter system designed GLE to filter the smallest weed seed. We have tried various techniques for filtering weed seed over the years and were surprised by how well this system worked. We injected alyssum seed into a sprinkler system on a 17 acre field in the Gila Valley. The field was divided into 2 acre plots and half of them were irrigated with filtered water and half were unfiltered. Alyssum seed supplied by Select Seed is 0.5 mm to 0.75 mm in diameter or the same size as purslane seed. We recovered 86% of the filtered seed that was injected through the system in the filters and were unable to find any alyssum plants in the filtered plots compared to 136 seeds/ sq. ft in the unfiltered plots. This system won’t clean up a field in one season but can eliminate a significant source of weed seed and significantly reduce weed problems when used over a period of years.
Please click on the following link for more information on the Weed Seed Filtration Systems.

This technology was developed by Greenline  Equipment and has a PATENT
PENDING  for G-PAWDS™️ PORTABLE AUTOMATED WATER DELIVERY SYSTEM.