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Our Method Texas Plant and Soil Lab uses the CO2 Extraction Method to extract Potassium (K), Sodium (Na), Calcium (Ca), and Magnesium (Mg) from your soil. This method duplicates the way plants naturally extract these nutrients from ANY soil. Texas Plant and Soil Lab has been testing soils from around the world and providing solutions for growers for more than 70 years. The CO2 Extraction Method is offered only by a handful of labs around the world, as it is extremely labor-intensive and does not lend itself to an automated processing line as does Mehlich III or other commonly-offered soil nutrition tests. Other testing methods only tell you the TOTAL CONTENT of Potassium (K), Sodium (Na), Calcium (Ca), and Magnesium (Mg) present. The CO2 Method seprately tells you what is immediately available to the plant (water soluble) and what is Because our method duplicates the way the plant naturally extracts nutrients, it is the most accurate method of measuring Potassium (K), Sodium (Na), Calcium (Ca), and Magnesium (Mg). It does not have to be adjusted according to soil type. The proof is always in crop / plant performance! CO2 was the first soil nutrient extraction method, develpoed in England by Daubeny in 1845. As analytical technology improved, much work was done on the method by the universities of Arizona and Florida and others in the 20th Century. Building upon those works, Texas Plant and Soil Lab has further developed and refined the testing standards. But the real value in a Texas Plant and Soil Lab test is in the recommendation. You get a specific fertilzation recommendations for your crop in your soil based on your cultivation practice, whether CONVENTIONAL, SUSTAINABLE, or ORGANIC. Please contact us today at 956-383-0739 and speak with us |
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