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Dried Compost Instructions

Compost Formula

Mushroom Compost is a complicated material made from several different materials. Most of it is made from a base of straw or hay. To that is added a small amount of supplements, minerals and manure. A brief out line on how mushroom compost is made follows.

Phase 1, Agaricus bisporus Compost Formula. 1 - Three wire bale formula.

Day
 Day of Week
 Treatment to material and ingredients to add
 1  Monday Wet down.*Wheat Straw one bale, or Stable straw with 10% horse manure, ( 50 pounds.)
 2  Tuesday Let it sit
 3  Wednesday Let it sit
 4  Thursday Add - dried poultry waste and Urea. (1 Pound - Dried Poultry Waste & 1.2 ounze Urea.)
 5  Friday Let it sit
 6  Saturday Flip pile and wet down.*
7
Sunday
Let it sit
8
Monday
Flip pile and wet down.*
9
Tuesday
Let it sit
10
Wednesday
Let it sit
11
Thursday
Add - dried poultry waste and Urea. (1 Pound - Dried Poultry Waste & 1.2 ounze Urea.)
12
Friday
Flip pile
13
Saturday
Flip pile and wet down.* - Add 2 pounds - Cotton Seed Hulls.
14
Sunday
Let it sit
15
Monday
Flip pile and wet down.* (Compost will naturally start to heat up to high temperatures.)
16
Tuesday
Let it sit
17
Wednesday
Add - 3lbs. Cotton Seed Meal, 2 lbs. Gypsum, 1 lbs. Rape Seed Meal, 1 lbs. Peat Moss.
18
Thursday
Turn pile, water lightly.* (Keep the pile in a more compact format to allow heat to build up.)
19
Friday
Let it sit
20
Saturday
Turn pile, water lightly.*
21
Sunday
Let it sit
22
Monday
Turn pile, water lightly.*
23
Tuesday
Let it sit
24
Wednesday
Turn pile, and fill containers. Ready to pasturize at 142 degrees F. for 6 hours,

First stabilize at 132 F. for 3 hrs. , then raise to 142 F. for 6 hrs.

Finished compost has 65-70% water content.

Slowly let cool for 2 days. Slow clean air ventilation required.

Well made compost is blackish and has a light carmel type coating covering the straw. Over composting will lower mushroom yeilds.

Compost is pasturized to kill any existing undesirable fungi growing in the compost. It can then be innoculated with mushroom spawn.

* Wet down just enough to moisten the material and not enough to cause water run off. Run off washes away the added nuitrients. Note: Compost should be made on a solid surface (concrete, asphalt, plastic, wood) to prevent the washing away of added nutrients. The above formula was downsized from a larger volume formula. This smaller volume formula may require additional composting time.

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