SOIL Plus – Experimental Set with Laboratory Equipment and Worksheets

SOIL Plus – Experimental Set with Laboratory Equipment and Worksheets

Carefully developed set of 20 experiments with a teacher's guide (from theory to conclusions) and a complete set of essential laboratory equipment (cylinders, Petri dishes, beakers, pipettes, tweezers, glass vials with stoppers, funnels, sieve and mesh, filters, magnifying glasses, double-ended spatula, soil trowel, etc.) and substances, including a reagent with a colorimetric scale. Through simple yet engaging experiments, the set introduces the most important features and the role of soil in nature. Beginning with soil types and granulometric composition, and moving through physicochemical properties, it leads to the role of living organisms in soil, as well as the effects of human activity. The included worksheets can be photocopied.

The extended version of the Gleba set – an experimental set with laboratory equipment and worksheets – has been enriched with additional reagents for determining nitrogen, phosphorus, and potassium content in soil.

The set also includes colorful laminated A4 posters illustrating selected stages of some experiments. The entire set is housed in a sturdy case. The set has earned widespread appreciation from teachers. Recommended!

The manual contains worksheets with a detailed description of the following experiments:

• Soil mineral composition
• Basic soil fractions
• Stability of crumb soil structure
• Soil moisture
• Soil filtration capacity
• Water holding capacity of soils
• Soil pH
• Physical sorption of soil
• Effect of calcium- and sodium-containing fertilizers on crumb soil structure
• Effect of liming on soil pH
• Construction of earthworms and their impact on soil fertility
• Soil organisms and their activity in soil
• Variation of soil fauna depending on soil type
• Soil salinity and plant development
• Soil salinity and plant water use
• Effect of soil contamination on seed germination and plant growth
• Effect of sodium chloride on soil structure
• Effect of soil acidification on the condition of trees
• Role of plants in soil-forming processes
• Study of nitrogen content (NO3) in soil
• Study of phosphorus content (P2O5) in soil
• Study of potassium content (K2O) in soil