Compost is decomposed organic matter that is used as a fertilizer. Composting is the natural process by which organic materials like food waste and yard trimmings break down into a nutrient-rich soil amendment. There are benefits to composting such as improving soil quality, saving money on fertilizers, and reducing waste. The document describes different composting techniques like cold composting, hot composting, aerobic composting, anaerobic composting, and vermicomposting which uses worms and varies in maintenance needs from low to high.

1. Compost and composting
techniques
By
sakshi

2. What is compost?
• Compost is organic matter that has been decomposed and recycled
as a fertilizer and soil amendment
• Compost is a key ingredient in organic farming.
• End product of the decomposition of organic matter

3. WHAT IS COMPOSTING?
•Composting is a natural process that turns organic material
into a dark rich substance
•By composting your organic waste you are returning nutrients
back into the soil
•Finished compost looks like soil–dark brown, crumbly and
smells like a forest floor.

4. why should I compost?
• Adding organic materials to the soil improves moisture retention.
• Adding decomposed organic material to the soil feeds beneficial
organisms.
• Compost provides a balanced, slow–release source of nutrients that
helps the soil hold nutrients long enough for plants to use them.
• Composting saves money–you avoid the cost of buying soil conditioners,
bagged manure etc.
• Improves water-holding capacity resulting in reduced dependency on
watering

6. What should I compost?
• When selecting materials for your compost pile,
• AVOID:
• • Wastes that attract pests
• • Diseased/Insect ridden plants

9. Techniques of composting

10. 1) Cold composting
•Cold composting is one of the easiest forms of composting.
•Many beneficial nutrients in cold compost remain
uncompromised by high temperatures.
• the process is slower.
•once established, the cold composting bins will provide you
with a continuous supply of lawn and garden food.

12. Hot composting
•A hot pile requires enough high-nitrogen materials to get the
pile to heat up.
•microbial activity within the compost pile is at its optimum
level, which results in finished compost in a much shorter
period of time.
•It requires some special equipment, as well as time and
diligence.
•Temperatures rising in a hot-compost pile come from the
activity of numerous organisms breaking down organic
matter

17. Types of composting
1. Aerobic composting:
-This means to compost with air
•Organic waste will break down quickly and is not prone to smell.
•This type of composting is high maintenance, since it will need to be turned
every couple days to keep air in the system and your temperatures up.
•It is also likely to require accurate moisture monitoring.
• This type of compost is good for large volumes of compost.

19. 2. Anaerobic composting
•This is composting without air.
• Anaerobic composting is low maintenance since you simply throw it in a
pile and wait a couple years
•compost may take years to break down.
•Anaerobic composts create the awful smell most people associate with
composting.
• The bacteria break down the organic materials into harmful compounds like
ammonia and methane.

21. 3. vermicomposting
•- This is most beneficial for composting food waste.
with worms.
•. Oxygen and moisture are required to keep this compost healthy.
•This is medium maintenance compost since you need to feed your rworms and
monitor the conditions

23. Thankyou