Losses Beyond The Farm
A new working paper from WRI India and its field partners has put a sharper price tag on a problem long treated as a logistical nuisance: post-harvest loss. The study, developed with BAIF Development Research Foundation, Samunnati and the Centre for Advanced Research and Development, argues that losses in onion, soybean and custard apple are not only reducing farmer earnings but also imposing hidden climate costs by wasting the resources used to grow, transport and process those crops.
The findings matter because post-harvest loss sits at the intersection of macroeconomics, food systems and climate policy. Every kilogram of produce that spoils after harvest represents sunk public and private investment in seeds, irrigation, fertiliser, labour, fuel and transport. When that produce never reaches consumers, the economy absorbs the cost twice: once in lost income for farmers and again in the inefficiency of a food system that must produce more to compensate for waste.
For India, where agriculture remains central to rural livelihoods and food security, the implications are significant. Onion is a high-volume staple in the market, soybean is a major oilseed and protein crop, and custard apple is an important horticultural commodity in several rainfed belts. Losses in these crops can be especially damaging because they occur at different points in the value chain and require different interventions, from better drying and storage to improved grading, packaging and transport.
Climate Costs Multiply
The paper's broader significance lies in its climate framing. Food loss is increasingly recognised as a climate issue because it expands the environmental footprint of agriculture without delivering nutrition or income in return. When crops are wasted after harvest, the emissions associated with cultivation, post-harvest handling and logistics are effectively emitted for no productive outcome. The result is a drag on both economic efficiency and climate mitigation.
That logic is particularly relevant in India, where agricultural production already faces pressure from erratic rainfall, heat stress, groundwater depletion and rising input costs. If post-harvest systems remain weak, climate stress can intensify losses further, creating a vicious cycle in which farmers are forced to bear higher production risks while receiving lower returns. In that sense, reducing post-harvest loss is not a narrow supply-chain fix; it is a resilience strategy.
The working paper also points to a policy gap. India has made repeated efforts to improve farm productivity, expand market access and strengthen storage infrastructure, but post-harvest inefficiencies continue to receive less attention than production-side interventions. That imbalance can distort public spending. More output at the farm gate does not automatically translate into more food on the table if losses after harvest remain high.
Policy And Market Gaps
The study's collaboration with field organisations suggests that the problem is not merely technical. It is also institutional and market-driven. Smallholders often lack access to affordable storage, timely aggregation, cold-chain facilities where needed, and reliable price discovery. In perishable or semi-perishable crops, even short delays in drying, sorting or transport can sharply reduce quality and sale value.
For onion growers, losses can arise from inadequate curing, poor storage ventilation and price volatility that discourages immediate sale. Soybean losses may stem from moisture exposure, handling damage and weak post-harvest processing. Custard apple, a delicate fruit with a short shelf life, is especially vulnerable to bruising, rapid deterioration and limited local processing capacity. Together, these examples show that post-harvest loss is not a single problem but a cluster of crop-specific failures.
The economic consequences extend beyond farm households. Higher wastage can raise market prices, reduce supply stability and increase pressure on food distribution systems. It can also weaken the viability of value-added industries that depend on consistent raw material quality. In a broader fiscal sense, wasteful food systems reduce the return on public investment in agriculture, infrastructure and climate adaptation.
The WRI India paper adds to a growing body of evidence that food loss reduction should be treated as a core development priority rather than a peripheral efficiency measure. If policymakers want to improve farm incomes, strengthen food security and lower the climate footprint of agriculture at the same time, post-harvest systems will need far more attention. The challenge is not only to produce more, but to lose less after the harvest is already in hand.