Farmers Read Nature's Signs Better Than Anyone

Long before we had satellite forecasts and seasonal advice, African farmers knew how to read the sky. They watched the clouds, observed the birds, and smelled the first rain on hot ground. They planted their crops based on what they saw. For many years, this knowledge helped feed nations. But today, things are changing. The signs are not what they used to be. Rains that used to come in April now arrive in May or not at all. The harmattan lingers longer. Rivers that once flooded every decade now flood twice in five years. Nature still sends its signals, but they are harder and crueler to interpret.

On Friday, 5 June 2026, we will celebrate World Environment Day. This year's theme is "Inspired by Nature. For Climate. For Our Future." This theme will be discussed in Baku and echoed in many places around the world. It is an important conversation, but the people who live this theme most directly will not be in those discussions. They are the smallholder farmers in northern Nigeria and the wider Sahel, the rice farmers of the Niger basin, and the cassava, cocoa, and oil palm growers from Cross River to the coastal forests. This is a Nigerian story but it is also a West African one; the same signals are being read across the region, and it has become more difficult to interpret them in the last decade.

As we approach World Environment Day, I want to make one clear point that starts in the field and ends in meetings. In our region, agricultural finance is climate finance. The most direct and impactful form of climate action for our financial sector is not distant carbon markets or offset schemes. It is about investing serious, patient, and smart capital in the hands of those who work with the most climate-exposed asset we have, our land. If we make the right investment, we can tackle food security, improve rural livelihoods, and boost climate resilience all at once. If we fail, we will keep treating three sides of one crisis as if they are separate issues.

To understand why this matters, we need to see the land, like those of us in business banking do. In the Sahel, the desert is not just a saying; it moves closer year after year, taking over farmland that used to feed families. Lake Chad, once a major freshwater lake shared by Nigeria, Niger, Chad, and Cameroon, has shrunk drastically, taking fishing and farming livelihoods with it. In the middle regions, the rains have become violent and unpredictable. A single night of flooding can wipe out a season’s work and a year’s income. Along the coast, rivers are eroding, swallowing farms, homes, and roads. These are not isolated events; they show a global issue, and the first to feel it are those who feed everyone else.

This is the part of the climate story we often overlook. We categorize late rains under "agriculture," floods under "disaster relief," and the rising cost of meals under "the economy." We only use the term "environment" for tree-planting campaigns. But these issues are not separate. A farmer who cannot plant due to failed rains, a trader raising prices because of a smaller harvest, and a young person leaving the village because farming is no longer profitable are all reacting to the same signals. In our region, climate change first shows up as an agricultural issue. We won't manage it as an environmental issue until we finance it as an economic one.

There is a contradiction we have accepted for too long. Agriculture provides more jobs than any other sector in Nigeria and much of West Africa. It also contributes a significant share of national output. It is the backbone of our economy, yet for decades, it has received only a small share of total bank lending, which does not match its importance in jobs, food, and stability. We have built financial systems that are under-invested in the very sector that keeps them running.

Bankers know the reasons well. Agriculture has long been seen as too risky, too seasonal, too informal, and too hard to secure. A farmer's income comes once or twice a year, not every month. His balance sheet includes a few hectares, some livestock, and a lot of practical knowledge. No standard credit model was made to recognize this. So, capital took the easy route: it avoided agriculture or lent briefly and at high rates, on terms that suit the lender, not the crop. This caution made sense in a stable climate, but in a changing one, it is self-defeating. A farmer who can't borrow cannot adapt. He can't buy drought-resistant seeds, install irrigation systems, or store harvests to prevent spoilage. We ask our most climate-exposed citizens to face tough conditions with the least capital available. This is not wise; it is a slow failure of both economics and adaptation, and the cost is felt at every table through rising food prices.

The good news is that much of what we call "agricultural risk" is not inevitable. It is a design challenge, and these challenges can be solved. Recent years have brought us better tools, and institutions willing to use them are finding agriculture to be more bankable than previously thought. It starts with lending that suits the farmer instead of making the farmer adapt to the lender's needs. Cash-flow options that align with the crop cycle, disbursing funds at planting and due after harvest are key. Value-chain and anchor-borrower models can resolve scale, collateral, and market access issues. Warehouse-receipt systems allow stored grain to act as collateral, so farmers do not have to sell everything at harvest when prices are lowest just to get cash.

Alongside this, there are more financial tools available: input and mechanization finance to boost yields, irrigation finance to reduce reliance on rains, and cold-chain finance to decrease post-harvest losses. These losses are as much an environmental issue as an economic one, as every wasted tonne represents lost water, land, fuel, and labor. Weather-index insurance can pay out automatically when rainfall is below a certain level, turning an unmanageable risk into a manageable one. The rise of mobile technology and farm-level data, like satellite images and digital payment histories, is giving lenders a better way to assess smallholders they once ignored. None of this is just theory; each tool is already being used in some parts of the region. The goal is not to create new tools but to use the existing ones effectively and consistently.

Here, agricultural finance and climate goals meet. The tools that make farming bankable also make it resilient. Irrigation is an adaptation. Drought-resistant seeds are an adaptation. Healthier soils, smarter water use, agroforestry that fights desertification, and better storage are not just “green” extras; they are what keeps a farm alive in a harsh climate. This is particularly urgent in West Africa, a region that is highly vulnerable to climate change yet receives very little climate finance. The global conversation has shifted to climate finance, Azerbaijan, this year’s World Environment Day host, is leading that talk, but climate finance does not only happen at a high level. Its most practical form for us is the funding that allows a community to drill a borehole or build a storage facility. The local reality is how the global goals are achieved.

Banks cannot do this alone, nor should they. The risks are real, and the best way to handle them is to share them among those who each have a part of the solution. Governments must create the framework, build rural infrastructure, and offer guarantees that make long-term lending possible. Development finance institutions, especially the African Development Bank, with their goal to feed the continent, can bring in the steady, blended capital that encourages commercial lenders. Insurers can assess the weather risks that banks should not take on alone. Agritech firms and aggregators provide data and market connections. Banks bring structure, reach, governance, and capital. Nigeria has tried similar efforts before, like the Agricultural Credit Guarantee Scheme and the Anchor Borrowers' Programme, and we have learned both the potential of public-private agricultural finance and the discipline it requires. Such partnerships work only when they are well-designed, governed transparently, and measured by results, not just money spent.

For those of us in the public sector, the best role a bank can play is often not as a last-resort lender but as a fair partner. We must connect the goals of government, the funding from development partners, and the needs of farmers into systems that effectively move money to the fields. The reward is greater than just managing risks. It is easy to speak of the Sahel and the rural North only in terms of crisis, especially with the advancing desert and dwindling water. But that view is incomplete. Those regions also have vast arable land, established value chains in grains, livestock, and horticulture, and one of the youngest workforces in the world. When a young person can finance an irrigated dry-season crop, or a women's group can get inputs and secure a buyer, farming becomes a future, not just a fallback. This shift from relief to investment, from managing decline to financing growth, is the most powerful contribution finance can offer to regions facing climate challenges. It is also good business: the young and underserved are not a market to pity but a major growth opportunity in African banking.

At Union Bank, we have believed this for a long time. As an institution that has served Nigerian communities for over a century, we have seen the relationship between people and land change firsthand. We now see agricultural finance not just as a niche or charity but as vital infrastructure, and increasingly, as climate infrastructure. We ask ourselves not whether agriculture is worth financing but how to finance it in a way that promotes resilience instead of just extending credit, and how to do it at the scale needed today.

The campaign for this year's World Environment Day speaks about the signals the Earth sends us and the signals we choose to send back. This is a fitting perspective for a banker. For too long, the signal our financial system sent to farmers was discouraging: you are too risky, too small, and too distant to deserve our capital. Farmers understood this, and many of their children left farming. Now, we can send a new signal.

“For Climate” and “For Our Future” are not just phrases to admire from afar. For Nigeria and its neighbors, there are choices to make about how we assess risk, where we direct funding, and if we are finally ready to support the people who have always listened to nature’s signals. The most meaningful climate commitment our financial sector can make this World Environment Day is not just a statement; it is a commitment to finance the land that feeds us, wisely and on a large scale. The time, as the campaign rightly says, is now. Now for climate, and urgently, now for the farmer.