Organic Matter

" If you build up the soil with organic material, the plant will do just fine"

-John Harrison

The term organic has recently taken on many different definitions. In soil science, it,s referring to any compound that contains carbon. Most living things are carbon-based; therefore, they are organic.

An organism does not have to be living in order to be classified as organic matter. Organic matter can be derived from existing organic matter or non-organic matter such as the decomposition of vitamins and minerals.

farm 1.pdf

In this video, we will define, organic matter and its components. We will also talk about examples of organic matter alongside the cycles that create it.

Finally, we will discuss the benefits of composting and the elements that make it possible.

Below you will find the vocabulary terms for this section.

Vocabulary

Organic Matter

Matter that contains carbon. Can be synthesized either from already existing organic matter or inorganic matter.

Microbial Biomass

The concentration of microorganisms in a given area

Browns

Carbon rich sources in compost (i.e dead leaves, roots, twigs)

Greens

Nitrogen rich sources in compost (i.e fresh grass clippings, fruit peels, Vegetables scraps)

Composting

The cycle of combining browns, greens, water, microbes, and time to produce a nutrient rich, natural fertilizer for soils.

Biodiversity

The concept of having lots of different organisms living in the same area.

Organic Matter Activity

DIY Composting Jar

Materials

Large mason jar

Wood chips or newspaper

Fruit or Vegetable Scraps

Water

Dirt

Plastic wrap

Procedure

1.) Being placing the torn newspaper or wood chips into the bottom of your mason jar.

2.) Place half a cup of dirt onto the first layer and dampen. Do not saturate the mixture, just lightly dampen it.

3.) Place the food scraps onto the moistened dirt layer.

4.) Repeat steps # 1-3 two more times for a total of 9 layers.

5.) Finish by placing plastic wrap over the top of the jar. Screw on the ring. Poke a few holes in the plastic wrap.

6.) Turn the jar once a week for 2-3 months.

7.) Your compost is ready when the jar has an earthy smell and looks like dark moistened dirt.

How does it work?

The wood chips/newspapers are a great carbon source. They are our browns. Food scraps are a great nitrogen source. They are our greens. When the whole mixture is moistened, microorganisms are encouraged to grow. We poke holes in the plastic wrap to allow for aerobic bacteria to grow. These are good bacteria.

Knowledge Check

Page updated

Report abuse