Tuesday, September 21, 2010

two tests to determine soil composition through texture

Soil factors influence which plants will grow where. Changing what type of care you give your plants will give you a healthy garden. Soil texture determines it's composition. Besides rocks bugs and roots, soil is made of clay, silt, & sand.



METHOD 1: 1 day prep with results on day 2

Tools:
Soil, newspaper, water, plastic food container

Prep:
1 day in advance, water soil thoroughly and allow to drain.

Lab Steps:
1. Grab a handful of moist soil and roll it into a ball.

Record results:
Determine soil type based on lab.
-clay based soil is tacky to the touch and holds together tightly.
-Silt based soil holds together loosely and may feel soft, like a riverbed.
-Sandy based soil will not stick together well and feels sharp or gritty.

METHOD 2: 5 steps, 1 day prep, results in 2 days

Tools:
small amount of dish soap, large jar with lid, water, soil, newspaper

Lab Steps:
1. Spread newspaper to protect your lab surface.

2. Fill a clear large jar 2/3 full with water.

3. Add a small squirt of dish soap

4. Fill remaining space with dirt.

5. Shake well and allow to settle for 2 days

Record results:

The dirt will separate into 3 layers. Viewed from top to bottom or lightest to heaviest; clay, silt, or sand. Naturally, the largest layer is what your soil is mostly made of.

Here is an example of what clay based soil would look like:

Assess space

1 Size & room for plants to mature

2 Sunlight & shadow in area garden is placed

3 Water source, rain, time spent

4 Soil assessment of natural moisture & retention, texture, & pH

5 Weather, Climate, & Landscape (indoor vs outdoor)

6 Pests