Skill – Chapter 4: Mushroom Cultivation
Class 9 | Simple Study Notes | Not a Textbook Aligned with the Class 9 Skill (Kaushal Vikas) syllabus. Independently created study material. Not affiliated with or endorsed by NCERT.

Table of Contents

📝 Section 1 — Classroom Notes

What is Mushroom Cultivation?
It means growing mushrooms for food. Mushrooms give good protein. They grow fast and cost less. Many farmers earn well from them.
Types of Mushrooms
Button mushroom is white and round. Oyster mushroom looks like a fan. Paddy straw mushroom grows on rice straw. All three are easy to grow.
Best Conditions for Growth
Mushrooms like dark, moist places. The room should be 20 to 30 degrees. Good air flow is also needed. Too much light is not good.
What is Spawn?
Spawn is like mushroom seeds. We buy spawn from a lab. It is mixed with the growing stuff. Spawn starts the mushroom growth.
What is Substrate?
Substrate is the growing material. It can be straw or sawdust. Mushrooms eat the substrate to grow. We must clean it before use.
Preparing the Substrate
Cut the straw into small pieces. Soak it in hot water. This kills bad germs. Let it cool before adding spawn.
Growing Steps
First, prepare the substrate well. Next, mix spawn into the substrate. Then, put it in plastic bags. Keep bags in a dark room.
Harvesting Mushrooms
Mushrooms grow in two to three weeks. Pick them when the cap opens. Twist and pull them gently. Do not use a knife to cut.
Benefits of Mushroom Farming
Mushrooms have high protein. They cost less to grow. They grow very fast. They give good income to farmers.
Storage and Selling
Keep mushrooms in a cool place. Pack them in clean bags. Sell them fresh at the market. Dried mushrooms also sell well.

🎨 Section 2 — Easy Illustrations

Mushroom Growing Types Button, oyster, straw Conditions Dark, moist, cool Spawn Mushroom seed material Substrate Straw or sawdust Steps Prepare, mix, grow Harvesting Pick when caps open Benefits High protein, low cost Selling Market or direct sale

Button, oyster, and paddy straw mushrooms.

Cut Straw Hot Water Clean! Soak straw in hot water to kill germs. Preparing the Substrate

Cut straw, soak in hot water, then it is clean.

Spawn + Substrate Dark Room Keep in dark place Mix Spawn and Incubate

Mix spawn into substrate and keep in a dark room.

Pick when the cap opens up. Harvesting Mushrooms

Pick mushrooms gently when the cap opens.

High Protein Low Cost Fast Growth Mushrooms are great for health and income. Benefits of Mushroom Farming

Mushrooms give high protein, cost less, grow fast.

✏️ Section 3 — Worked Examples

Example 1: Choosing the Right Mushroom

1Check the weather in your area.
2Button mushrooms need cool weather.
3Oyster mushrooms grow in warm places.
4Pick the type that fits your area.
Answer: In warm places, grow oyster mushrooms. In cool places, grow button mushrooms. Ask local farmers too.

Example 2: Preparing Substrate

1Get clean wheat or rice straw.
2Cut it into small pieces.
3Soak in hot water for one hour.
4Drain and let it cool down.
Answer: The substrate is now clean and ready. Mix spawn into it. Put the mix in bags.

Example 3: Harvesting and Selling

1Wait for two to three weeks.
2Look for mushrooms with open caps.
3Twist and pull them gently.
4Pack in clean bags to sell.
Answer: Sell fresh mushrooms at the market. You can also dry them and sell later. Both ways give good income.

📋 Section 4 — Cheat Sheet

WordSimple Meaning
MushroomA plant-like food that grows on waste
CultivationGrowing something with care
Button MushroomWhite round mushroom, needs cool air
Oyster MushroomFan-shaped mushroom, grows in warm air
Paddy StrawMushroom that grows on rice straw
SpawnMushroom seeds used to start growing
SubstrateThe stuff mushrooms grow on
SterilizeUsing heat to kill bad germs
IncubateKeeping spawn in dark to let it grow
HarvestPicking the ripe mushrooms
ProteinA body building part in food
MoistA little wet, not dry
CapThe top round part of a mushroom
Dried MushroomsMushrooms with water removed for storage

📄 Section 5 — Take-Home Handout

Part A — Types of Mushrooms

Name three types of mushrooms. Write one fact about each.

Part B — Growing Conditions

What do mushrooms need to grow well? List three things.

Part C — Spawn and Substrate

What is spawn? What is substrate? Write in simple words.

Part D — Growing Steps

Write the steps to grow mushrooms in order.

Part E — Benefits

Why is mushroom farming good? Give three reasons.

🃏 Section 6 — Revision Flashcards

Name three types of mushrooms.
Button, oyster, and paddy straw mushrooms.
What conditions do mushrooms need?
Dark, moist, and 20 to 30 degrees warm.
What is spawn?
Spawn is like seeds for mushrooms.
What is substrate?
Substrate is the stuff mushrooms grow on.
How do you clean the substrate?
Soak straw in hot water for one hour.
When do you pick mushrooms?
Pick when the cap opens up fully.
Why are mushrooms good food?
They have high protein and low cost.
How can you store mushrooms?
Keep fresh in cool place or dry them.

🧠 Section 7 — Mind Map

Mushroom Cultivation Types Button, Oyster, Paddy Conditions Dark, moist, 20-30 C Spawn Mushroom seeds Substrate Straw or sawdust Growing Steps Prepare, mix, incubate Harvest Pick when cap opens Benefits Protein, low cost, fast Storage & Selling Fresh or dried to sell

Mind map showing all parts of mushroom farming.

✅ Answer Guide — Take-Home Handout

Part A — Types of Mushrooms (Suggested Answers)

Three types of mushrooms: 1. Button mushroom – white, round, mild taste, grows in cool places. 2. Oyster mushroom – flat cap, grey or white, easy to grow on straw. 3. Paddy Straw mushroom – grows on rice straw, common in warm places.

Part B — Growing Conditions (Suggested Answers)

Three things mushrooms need: 1. Dark place (mushrooms do not need sunlight). 2. Moisture / Humidity (keep the bags or substrate moist by spraying water). 3. Warmth (temperature of 20–30°C is ideal).

Part C — Spawn and Substrate (Suggested Answers)

Spawn = the starting material used to grow mushrooms (like seeds for crops). It contains fungal threads mixed in grain or sawdust. Substrate = the material the mushrooms grow on (rice straw, wheat straw, or sawdust). The substrate is cleaned and soaked before spawn is mixed in.

Part D — Growing Steps (Suggested Answers)

Steps in order: 1. Collect straw and soak in hot water for 1 hour to clean. 2. Drain and cool the straw. 3. Mix spawn into the straw in layers inside a plastic bag. 4. Tie the bag and keep in a dark, moist place. 5. Water or spray daily to keep moist. 6. After 15–20 days, mushrooms start to grow. 7. Pick when caps open fully.

Part E — Benefits (Suggested Answers)

Three reasons mushroom farming is good: 1. High protein food – healthy and nutritious. 2. Low cost – can be done with waste straw and small space. 3. Fast growing – mushrooms are ready in 15–30 days. Also: good income source for small farmers.

💡 Quick Revision Tips

  • Mushrooms are fungi, not plants — they need no sunlight
  • Clean substrate by hot water treatment (pasteurization)
  • Harvest when cap is fully open but not over-ripe
  • Store fresh mushrooms in cool place; dry them for longer shelf life