Roland-Story High School Agriculture Technology Class Lesson 1 Mixing Media Preface



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Roland-Story High School


Agriculture Technology Class

Lesson 3.1 Mixing Media

Preface:

Potting media is used in place of mineral soil for container-grown crops. Media has special ingredients to make the soil lighter and have plenty of pore space for good drainage and aeration to promote root health. The ingredients used in potting media can vary, however peat moss, perlite, pumice, and bark are a few common components.


 

Concepts

  1. Potting media has specific qualities suited for container crops, such as using lightweight and inexpensive materials that provide the essential components needed for drainage and porosity.

  2. There are a variety of ingredients used in potting soil that provide permeability, porosity, and fertility needed for container crops.

  3. Media is sold in cubic feet or cubic yard increments and calculation of usage is an important skill for greenhouse and nursery production.

Essential Questions

1.    Why is potting media critical for plants?

2.    How is the density of an object measured?

3.    What is the difference between potting media and mineral soil?

4.    Why does potting media consist of a variety of components?

5.    What is the function of potting media ingredients, such as perlite and vermiculite?

6.    Why is garden soil not a good choice for container-grown plants?

7.    How are potting media quantities handled and calculated?

8.    What choices exist for purchasing potting media?

9.    How is volume calculated for a round pot?



Key Terms:


Aeration

Bark

Cubic measurement

Density

Drainage

Fertilizer

Gypsum

Lime

Mass

Media

Peat

Perlite

Porosity

Pumice

Soil

Vermiculite

Volume





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