Crop Diversification: Can Farmers Save Groundwater Without Losing Income?

ndia’s farming patterns have changed significantly over the years, but crop choices do not always match the water available in a region. In several groundwater-stressed states, farmers continue to grow water-intensive crops even as groundwater levels decline. ICAR says crop diversification can help address this mismatch.

A recent government assessment based on ICAR research found a mismatch between crop water demand and groundwater availability in Punjab, Haryana, Andhra Pradesh, Telangana, Maharashtra, Karnataka and Tamil Nadu. These states include several arid and semi-arid farming regions.

Different crops require different amounts of water. The amount also changes with soil, temperature, rainfall, crop duration and irrigation practices. A cropping system that may be suitable in a water-rich area can put pressure on groundwater when adopted continuously in a water-stressed region.

ICAR has studied cropping patterns alongside hydrological conditions using Central Ground Water Board data and monthly GRACE satellite observations. The assessment was used to identify areas where existing crop water demand does not match available groundwater resources.

This does not mean farmers should abandon a particular crop simply because it uses more water. Crop prices, procurement, food demand, farm machinery, existing irrigation systems and local market access all influence farmers’ decisions. Diversification needs to remain economically practical.

Which Crops Can Farmers Consider?

The government is encouraging diversification towards crops that generally require less water than highly water-intensive systems, including pulses, oilseeds, millets and suitable horticultural crops. The choice should depend on local soil, climate, irrigation availability and market opportunities.

Pulses can provide another advantage in crop rotations because legume crops can contribute biological nitrogen to the soil. But farmers should not assume that growing a pulse eliminates the need for fertiliser; nutrient management still depends on soil conditions and crop requirements.

Oilseeds and millets can also form part of diversified systems where they are agronomically suitable. Farmers should compare expected yield, market price, crop duration and input costs before replacing an established crop with an alternative.

ICAR has prepared an Atlas of Cropping Systems in India and identified alternative cropping systems that can provide more sustainable options in different regions. The alternatives consider agro-climatic conditions, available resources, water availability and market opportunities.

The approach is important because there is no single crop combination that can work across the country. A farmer in Punjab faces different groundwater conditions from one in Telangana or Tamil Nadu. Even within a state, soil, rainfall and irrigation access can vary considerably.

ICAR has also implemented location-specific crop-diversification interventions in 47 identified districts. Between 2023–24 and 2025–26, ICAR organised 457 training programmes, reaching 8,749 farmers and 4,592 extension functionaries with information on scientific crop diversification and sustainable crop management.

Can Diversification Protect Groundwater?

Diversification can reduce pressure on groundwater when farmers shift part of their cultivated area from water-intensive crops to crops with lower water requirements. The benefit becomes stronger when the new crops are combined with better irrigation scheduling, soil-moisture conservation and suitable farm practices.

ICAR is also promoting micro-irrigation, drip fertigation and optimum irrigation scheduling as part of the diversification effort. These practices aim to improve water-use efficiency rather than simply increasing the amount of irrigation available to farmers.

But groundwater conservation cannot depend only on individual farmers. Local water availability is affected by rainfall, aquifer conditions, irrigation infrastructure and the combined withdrawal of many farms. Crop diversification works best when it is supported by local water planning and appropriate market incentives.

The biggest concern for farmers is whether a water-saving crop can provide comparable or better returns. A crop that uses less water but has weak market demand may not be financially attractive, especially when farmers already have established buyers for rice, wheat or other major crops.

That is why ICAR’s approach considers market opportunities alongside water and agro-climatic conditions. Diversification should ideally move farmers towards crops for which there is local demand, procurement, processing capacity or reliable market access.

Government programmes are also supporting diversification in traditional rice-growing areas. The Crop Diversification Programme under PM-RKVY operates in Punjab, Haryana and Uttar Pradesh to encourage alternatives such as pulses, oilseeds, coarse cereals and other crops.

Should Farmers Change Their Entire Farm?

Farmers do not necessarily need to replace their main crop across the entire holding in one season. A smaller pilot area can help them understand whether an alternative crop suits their soil, water supply, labour availability and local market.

For example, a farmer can compare one diversified plot with the existing cropping system. The comparison should include irrigation requirement, seed and fertiliser costs, labour, yield, selling price and net return rather than looking only at gross production.

Farmers should also seek advice from KVKs and state agriculture departments before making major changes. Local recommendations can help identify crops and varieties suited to the particular agro-climatic zone.

India’s groundwater challenge cannot be solved by changing crops alone, but crop choice is an important part of the equation. When the crop grown on a farm demands more water than the local resource can sustainably provide, irrigation technology alone may not solve the problem.

ICAR’s recent assessment strengthens the case for resource-based crop planning. The objective is not simply to reduce water use, but to balance farm income, food production, groundwater availability and long-term agricultural sustainability.

For farmers, the practical lesson is to treat water availability as a crop-planning factor. Choosing the right crop for local soil, rainfall, groundwater and market conditions can reduce resource pressure while keeping farming economically viable.