Crop Comments: Soil testing without BSPs is like swimming without flippers

David had me pick up some soil samples he’d taken. He owns a small organic farm in the next county. I brought the samples home, air-dried them, then screened them using a wide-mouthed plastic jar with quarter-inch holes in the lid. Screening removes impurities like bug parts, roots, worms, leaves, tiny pebbles, etc. Labs just