A great introduction to soil science.
Get down to the nitty gritty of soil with cool science experiments and "just for fun" activities, games and internet connections. Investigate healthy plant requirements for proper soil texture, ideal levels of soil pH and nutrients. Learn to properly care for plants and perform pH, nitrate, phosphate and potassium soil tests using nonhazardous TesTab® methods.
Reagents for 10 tests per each test factor are included. Ages 8 and up.