TPSL Natural Soil Test TPSL's GOAL is to aid Growers in getting the most from their investment in a crop.
Laboratories use different procedures and chemicals for extracting plant nutrients.
Most Labs use strong chemicals for extracting plant nutrients. Only small portions of these large amounts of nutrients are available to plant roots. TPSL standard includes many other tests which affect nutrient uptake, such as soil texture, humus content, nitrates, free carbonates, total salts, amount of soluble salt cations. These tests are important for making the most accurate soil fertilizer recommendations possible. Our extraction mimics the natural action of the plant roots.