Potassium levels in greenhouse soils are analyzed by a direct-reading turbidity tube method. Calcium and magnesium tests employ Direct Reading Titrators, which dispense reagent to end-point color reactions. This outfit comes in a rugged, portable case with reagents for 50 tests per factor. A fact-filled handbook, Greenhouse Soils is included. These simplified field tests for green plant tissue indicate whether growing plants are receiving adequate amounts of available nutrients from the soil.
All tests give qualitative results for the specific nutrients.
By comparing test results from healthy and problem plants, it is possible to pinpoint deficiencies or excessive nutrient conditions. A complete kit for determining nitrates, phosphorus and potassium in plant tissue. Diced green plant tissue is saturated in a Universal Extracting Solution to prepare a single liquid extract for use with all three tests. Quantitative results given as abundant, adequate, deficient only. Reagents for 50 tests per factor.