Farmers with city compost bags in their field (Nitin, WOTR)

City Compost: A Solution For Waste Management And Soil Health Improvement (India)

Khachra Khad

Description

The use of city compost is a sustainable solution for addressing the problem of waste management and soil degradation. Under this technology, urban municipal waste is composted and used as organic fertiliser in agriculture. This relieves the cities’ waste management, enhances rural soils and in turn improves farm productivity.

In India, over 377 million people live in almost 8,000 cities or towns. They generate 62 million tons of municipal solid waste annually, according to the country’s government. More than 80% of such solid waste is deposited indiscriminately without treatment at dump yards in an unhygienic manner. In the Indian countryside, the ecological sustainability of agriculture has been at risk due to the excessive use of chemical fertilizers and monoculture since the ‘Green Revolution’ led to the degradation of land.

City compost is one of the solutions to both problems. Waste collected by municipal corporations is processed to make compost. During this process, organic waste is collected in the cities, recycled, processed to compost, and finally used as organic matter by farmers complementing the traditional farmyard manure. In such manner carbon that is contained in the waste is recycled back into the soil thus enhancing agricultural production.

Nashik Municipal Corporation in Nashik town of Maharashtra State in India has set-up a waste processing plant in the town. This plant processes the city’s organic waste into compost through a scientific process. The processed city compost is packed into bags of 50 kg each and these bags are supplied to fertilizer companies and further on to farmers. There are Government subsidies available to farmers for the purchase of compost bags subject to documentary proofs and other conditions.

Under the “Soil Protection and Rehabilitation for Food Security (ProSoil)” project of GIZ, farmers and FPOs (farmer producer organizations) have been supported for the application of city compost in their fields. Supported by the implementing agency WOTR (Watershed Organization Trust) the city compost application in farmer's fields in 3 districts of Maharashtra namely Ahmednagar, Jalna and Dhule has been introduced. Interventions covered more than 3000 farmers and around 1100 Acres of land. The entire intervention is implemented with the help of FPOs, which procured the city compost from ‘The Nashik Waste Management Centre’ and sold the procured material further to the farming communities. This has ensured easy availability to the farmers without incurring undue travel cost. Farmers applied the city waste compost in their farms during the month of May/June (before the onset of monsoon) to different crops.

City compost was applied to different crop combinations such as paddy-chickpea in Dhule District (moderate irrigation facility), greengram-sorghum in Ahmed Nagar District (Rainfed conditions) and soyabean-wheat in Jalna District (irrigated conditions). Farmers have seen the benefits of city compost across all crop combinations and geographies. The application of city compost has been of benefit to farmers in reducing the usage of synthetic fertilizers along with reducing the dependency on farmyard manure as it is getting scarce day by day. Farmers have also realized the improved soil health leading to better productivity of their farms.

The Indian government has also launched several initiatives to promote the use of city compost in agriculture. For example, the National Mission for Sustainable Agriculture provides financial assistance to farmers for the purchase of city compost, and the Fertilizer Control Order allows the use of city compost as a fertilizer. Although developing city waste as compost and its application in the farmer's field is a nascent approach from the India Government and other stakeholders, however looking at the availability of waste, the commitment of the Indian Government through its ‘Clean India Program’ and the vast issue of synthetic fertilizers usage and high subsidy burden, the use of city compost in agriculture has the potential to contribute to sustainable solutions in the area of waste management while improving soil health and reducing the use of synthetic fertilizers in India.

Location

Location: Ahmednagar, Jalna, Dhule, Maharashtra, India

No. of Technology sites analysed: > 1000 sites

Geo-reference of selected sites
  • 74.44158, 19.00006
  • 75.77338, 20.26124
  • 75.7733, 20.26112
  • 75.7733, 20.26112
  • 75.77343, 20.26055
  • 74.31354, 20.99405

Spread of the Technology: applied at specific points/ concentrated on a small area

In a permanently protected area?: No

Date of implementation: 2021

Type of introduction
Procurement of city compost by FPO (Nitin, WOTR)
Farmer mixing the city compost before application (Nitin, WOTR)

Classification of the Technology

Main purpose
  • improve production
  • reduce, prevent, restore land degradation
  • conserve ecosystem
  • protect a watershed/ downstream areas – in combination with other Technologies
  • preserve/ improve biodiversity
  • reduce risk of disasters
  • adapt to climate change/ extremes and its impacts
  • mitigate climate change and its impacts
  • create beneficial economic impact
  • create beneficial social impact
  • Reduce municipal waste
Land use
Land use mixed within the same land unit: No

  • Cropland
    • Annual cropping: cereals - wheat (winter), cereals - rice (upland), cereals - sorghum, legumes and pulses - beans, legumes and pulses - soya
    Number of growing seasons per year: 2
    Is intercropping practiced? Yes
    Is crop rotation practiced? Yes
Water supply
  • rainfed
  • mixed rainfed-irrigated
  • full irrigation

Purpose related to land degradation
  • prevent land degradation
  • reduce land degradation
  • restore/ rehabilitate severely degraded land
  • adapt to land degradation
  • not applicable
Degradation addressed
  • chemical soil deterioration - Cn: fertility decline and reduced organic matter content (not caused by erosion)
SLM group
  • rotational systems (crop rotation, fallows, shifting cultivation)
  • integrated soil fertility management
  • waste management/ waste water management
SLM measures
  • agronomic measures - A2: Organic matter/ soil fertility

Technical drawing

Technical specifications
An overview of the field where city compost is applied

Establishment and maintenance: activities, inputs and costs

Calculation of inputs and costs
  • Costs are calculated: per Technology area (size and area unit: Hectare)
  • Currency used for cost calculation: INR
  • Exchange rate (to USD): 1 USD = 80.0 INR
  • Average wage cost of hired labour per day: 200
Most important factors affecting the costs
The cost of city compost is available at a subsidised price of INR 1000 per ton incl. transportation. Non-subsidised prices range at INR 3000 per ton plus transportation. Project farmers could get it at subsidised rates. However, the non-availability of required documents may be a hindrance for farmers to avail the subsidised prices.
Establishment activities
n.a.
Maintenance activities
  1. Purchase of city compost by FPO and transportation to the base location (Timing/ frequency: April/May)
  2. Selling of the city compost among the farmers (Timing/ frequency: May)
  3. Application of city compost in the field by farmers (Timing/ frequency: May or early June)
  4. Mixing of the city compost in soil using the cultivator or rotavator (Timing/ frequency: May/June (Immediately after the application))
  5. Irrigation of the field (Timing/ frequency: Mid June or at the onset of Monsoon (farmers having assured irrigation due with their own sources))
  6. Sowing of the seeds (Timing/ frequency: June or early July)
  7. Intercultural operations (Weeding, nutrient management, pest application, crop monitoring) (Timing/ frequency: July-October)
  8. Harvesting of the crops (Timing/ frequency: October/November)
Maintenance inputs and costs (per Hectare)
Specify input Unit Quantity Costs per Unit (INR) Total costs per input (INR) % of costs borne by land users
Labour
Application of city compost Person days 2.0 300.0 600.0 100.0
Irrigation Person days 2.0 300.0 600.0 100.0
Equipment
Hired machinery for mixing the city compost in soil Hours 2.0 900.0 1800.0 100.0
Fertilizers and biocides
City compost Ton 2.5 1200.0 3000.0 100.0
Total costs for maintenance of the Technology 6'000.0
Total costs for maintenance of the Technology in USD 75.0

Natural environment

Average annual rainfall
  • < 250 mm
  • 251-500 mm
  • 501-750 mm
  • 751-1,000 mm
  • 1,001-1,500 mm
  • 1,501-2,000 mm
  • 2,001-3,000 mm
  • 3,001-4,000 mm
  • > 4,000 mm
Agro-climatic zone
  • humid
  • sub-humid
  • semi-arid
  • arid
Specifications on climate
Average annual rainfall in mm: 566.0
On an average, there are 34 rainy days (i.e. days with rainfall of 2.5 mm or more) in a year in the district. The major rainfall is usually received during months of June to September.
Name of the meteorological station: IMD, Pune
The project area comes under the scarcity zone, which is characterised by very low and erratic nature of rainfall, this affects the moisture content in the soil, therefore, this zone is commonly known as a drought-prone area. There is a high scarcity of irrigation water after the month of December. Thus, farmers mostly cultivate crops which can withstand very low water supplies.
Slope
  • flat (0-2%)
  • gentle (3-5%)
  • moderate (6-10%)
  • rolling (11-15%)
  • hilly (16-30%)
  • steep (31-60%)
  • very steep (>60%)
Landforms
  • plateau/plains
  • ridges
  • mountain slopes
  • hill slopes
  • footslopes
  • valley floors
Altitude
  • 0-100 m a.s.l.
  • 101-500 m a.s.l.
  • 501-1,000 m a.s.l.
  • 1,001-1,500 m a.s.l.
  • 1,501-2,000 m a.s.l.
  • 2,001-2,500 m a.s.l.
  • 2,501-3,000 m a.s.l.
  • 3,001-4,000 m a.s.l.
  • > 4,000 m a.s.l.
Technology is applied in
  • convex situations
  • concave situations
  • not relevant
Soil depth
  • very shallow (0-20 cm)
  • shallow (21-50 cm)
  • moderately deep (51-80 cm)
  • deep (81-120 cm)
  • very deep (> 120 cm)
Soil texture (topsoil)
  • coarse/ light (sandy)
  • medium (loamy, silty)
  • fine/ heavy (clay)
Soil texture (> 20 cm below surface)
  • coarse/ light (sandy)
  • medium (loamy, silty)
  • fine/ heavy (clay)
Topsoil organic matter content
  • high (>3%)
  • medium (1-3%)
  • low (<1%)
Groundwater table
  • on surface
  • < 5 m
  • 5-50 m
  • > 50 m
Availability of surface water
  • excess
  • good
  • medium
  • poor/ none
Water quality (untreated)
  • good drinking water
  • poor drinking water (treatment required)
  • for agricultural use only (irrigation)
  • unusable
Water quality refers to: ground water
Is salinity a problem?
  • Yes
  • No

Occurrence of flooding
  • Yes
  • No
Species diversity
  • high
  • medium
  • low
Habitat diversity
  • high
  • medium
  • low

Characteristics of land users applying the Technology

Market orientation
  • subsistence (self-supply)
  • mixed (subsistence/ commercial)
  • commercial/ market
Off-farm income
  • less than 10% of all income
  • 10-50% of all income
  • > 50% of all income
Relative level of wealth
  • very poor
  • poor
  • average
  • rich
  • very rich
Level of mechanization
  • manual work
  • animal traction
  • mechanized/ motorized
Sedentary or nomadic
  • Sedentary
  • Semi-nomadic
  • Nomadic
Individuals or groups
  • individual/ household
  • groups/ community
  • cooperative
  • employee (company, government)
Gender
  • women
  • men
Age
  • children
  • youth
  • middle-aged
  • elderly
Area used per household
  • < 0.5 ha
  • 0.5-1 ha
  • 1-2 ha
  • 2-5 ha
  • 5-15 ha
  • 15-50 ha
  • 50-100 ha
  • 100-500 ha
  • 500-1,000 ha
  • 1,000-10,000 ha
  • > 10,000 ha
Scale
  • small-scale
  • medium-scale
  • large-scale
Land ownership
  • state
  • company
  • communal/ village
  • group
  • individual, not titled
  • individual, titled
Land use rights
  • open access (unorganized)
  • communal (organized)
  • leased
  • individual
Water use rights
  • open access (unorganized)
  • communal (organized)
  • leased
  • individual
Access to services and infrastructure
health

poor
x
good
education

poor
x
good
technical assistance

poor
x
good
employment (e.g. off-farm)

poor
x
good
markets

poor
x
good
energy

poor
x
good
roads and transport

poor
x
good
drinking water and sanitation

poor
x
good
financial services

poor
x
good
Comments

In terms of infrastructure and services, Ahmednagar is well-connected with most services. However, still there is a scope to improve these further to make farmers' life better.

Impacts

Socio-economic impacts
Crop production
decreased
x
increased

Quantity before SLM: 1800 kg
Quantity after SLM: 2300 kg
Based on the assessment of the project implementing agency. However, crop production increases are not only to city compost. There were other technologies, which have also contributed to improving productivity. There is no assessment for the stand-alone compost intervention.

crop quality
decreased
x
increased


Reduced usage of synthetic fertilisers made the grains and pluses safer for consumption

expenses on agricultural inputs
increased
x
decreased

Quantity before SLM: 3600
Quantity after SLM: 3200
Reduced cost towards synthetic fertilisers

farm income
decreased
x
increased


Improved income due to improved productivity. Quantifiable numbers are however, not available.

Socio-cultural impacts
food security/ self-sufficiency
reduced
x
improved

community institutions
weakened
x
strengthened


Training and handholding support was provided from the project for procurement of city compost, governance and other areas.

Ecological impacts
soil moisture
decreased
x
increased

soil organic matter/ below ground C
decreased
x
increased


Reported by the implementing agency

Off-site impacts

Cost-benefit analysis

Benefits compared with establishment costs
Benefits compared with maintenance costs
Short-term returns
very negative
x
very positive

Long-term returns
very negative
x
very positive

City compost does not have any establishment cost at the farmers' level. In terms of maintenance cost, it is beneficial to farmers both in short term and long run.

Climate change

Gradual climate change
annual temperature increase

not well at all
very well
Answer: not known
seasonal temperature increase

not well at all
very well
Season: winter Answer: not known
annual rainfall decrease

not well at all
x
very well
Climate-related extremes (disasters)
heatwave

not well at all
very well
Answer: not known
cold wave

not well at all
very well
Answer: not known
extreme winter conditions

not well at all
very well
Answer: not known
drought

not well at all
x
very well

Adoption and adaptation

Percentage of land users in the area who have adopted the Technology
  • single cases/ experimental
  • 1-10%
  • 11-50%
  • > 50%
Of all those who have adopted the Technology, how many have done so without receiving material incentives?
  • 0-10%
  • 11-50%
  • 51-90%
  • 91-100%
Number of households and/ or area covered
1100
Has the Technology been modified recently to adapt to changing conditions?
  • Yes
  • No
To which changing conditions?
  • climatic change/ extremes
  • changing markets
  • labour availability (e.g. due to migration)

Conclusions and lessons learnt

Strengths: land user's view
  • A good replacement for farmyard manure (dung) as its availability is a challenge due to reduction in numbers of livestock
  • Improved productivity of major crops
  • Farmers have observed improvement in soil moisture and soil texture which indicates a better soil health
Strengths: compiler’s or other key resource person’s view
  • This is an excellent mechanism to promote the waste management and address this long-standing problem of the country
  • An economically cheaper option to meet the composting needs of farmers thus promoting the natural farming
  • A good business line for FPOs as city compost is generally not available in the market
  • In the longer run, regular application of compost can improve the soil organic carbon
Weaknesses/ disadvantages/ risks: land user's viewhow to overcome
  • Currently available in Nashik city only which is 150 km from the project area Collective procurement by FPO and selling it to its members
  • Prices of city compost are very high at the non-subsidised prices Farmers can keep their documents updated to get the subsidised compost. Also put up an application to concerned authorities for continuation of subsidy.
Weaknesses/ disadvantages/ risks: compiler’s or other key resource person’s viewhow to overcome
  • Regular supply from the waste processing plants. Many such plants do not operate regularly due to internal and external reasons. FPOs can undertake some longterm contracts with the company. Also in the long run they can set-up small plants for local-level composting.

References

Compiler
  • Santosh Gupta
Editors
  • Noel Templer
  • Stephanie Katsir
  • Tabitha Nekesa
  • Ahmadou Gaye
  • Siagbé Golli
Reviewer
  • Udo Höggel
  • Joana Eichenberger
  • Sally Bunning
Date of documentation: April 17, 2023
Last update: April 17, 2024
Resource persons
Full description in the WOCAT database
Linked SLM data
Documentation was faciliated by
Institution Project
Links to relevant information which is available online
This work is licensed under Creative Commons Attribution-NonCommercial-ShareaAlike 4.0 International