Soil and Water Conservation

Johnston County, North Carolina

Soils Demonstrations Using the Mobile Soils Classroom

Mobile Soils Classroom Flyer - PDF


INTRODUCTION TO SOILS – Apple Activity :

STATION 1 –

Till vs No-Till Activity – Infiltration and runoff

(Discuss tillage factors and influence on soil erosion – discuss effects of soil erosion on water resources – nps pollution, sedimentation, eutrophication, loss of topsoil

Water Holding Capacity
(Discuss how soil macropores and micropores hold water for plant intake)

Soil Organic Matter
(Aggregate stability – how soil organic matter helps soil structure, water holding capacity and nutrient availability for plants)

STATION 2 -

Soil Texture – what is soil texture?

Discuss the three soil textures – sand, silt clay
Allow students to feel soil and use soil textural triangle
How does soil texture affect soil properties

Soil Color - how soil color affects soil characteristics

Munsell Soil Color Book, use M&M’s example, discuss drainage and color

Soil Has a Charge – How does electrical conductivity of the soil affect a plant’s nutrient intake?

(This may be done first to allow clay particles to clump on node)

STATION 3 -

What is SOIL?

5 soil forming factors
Chemical and Physical Weathering
SOIL horizons - monoliths

Soil is an Ecosystem - Living Soil Activity

BMP’s - Discuss Best Management Practices

No-till, Cover crops, stripcropping, contour farming, grassed waterways, pasture mgmt.