DEPARTMENT OF AGRONOMY SERICULTURE COLLEGE

CHINTAMANI

TO,

DR V SHANKARNARAYANA SIR

DEPARTMENT OF AGRONOMY

SERICULTURE COLLEGE

CHINTAMANI

FROM,

CHALAPATHI V

I BSc (AGRI)

ALC3011

SERICULTURE COLLEGE

CHINTAMANI.

PRINCIPLES OF AGRONOMY

METHODS OF COMPOSTING

Definition Of Composting

Composting is a bio-chemical process in which micro organisms of both aerobic (which require air or oxygen gas for development) and anaerobic (which function in the absence of air or free oxygen) types, decompose organic matters into a final product which is well rotten manure known as compost.

Preparation Of Compost

Compost is prepared from refuses collected from the form or in towns or villages.

Two sources

• Compost from farm refuse• Compost from town refuse

Methods Of Composting

Indore method

Bangalore method

NADEP OR Vat OR Japanese method

Heap method

Pit and Heap method

Indore Method

This method developed by A.Howard and Y.D.Yard.

This is first aerobic method.

In this method animal dung, all other plant residues and wastes in the farmused.

Bangalore Method

This method by L.N.Acharya (1939) at IISc Bangalore.

This method overcome many of the disadvantages of Indore method.

This is anaerobic method.

This method eliminates the necessity of turning up of the materials as composting is done in trenches.

NADEP Method

According to the Shri Narayana Rao Pandari Panda “we have about 100 crores units of city compost which provide 60 lac tons of N, 2 lac tons of P and 45 lac tons of K”.

This method envisages lot of composting through minimum use of cattle dung.

We can provide required nutrients to the soil by utilizing available organic resources by adopting ‘NADEP’ method of composting.

Decomposition process through aerobic method.

This method requires 90 to 120 days.