Climate Change and Farm Resilience

Is there a best climate for farming in the world?

There isn’t one best climate, because the answer depends on the crop. What the most productive farming regions have in common is a growing season long enough for the crop, rainfall or irrigation water that arrives when the crop needs it, and deep, fertile soil. Climate alone doesn’t make a breadbasket.

• Grain crops such as corn, soybeans and wheat do best in temperate climates with warm summers, reliable rain and cold winters that break pest cycles. The US Corn Belt, the Argentine Pampas, much of Europe and the black-soil belt of Ukraine are classic examples.
• Mediterranean climates, with wet winters and dry summers, suit grapes, olives, citrus, almonds and many vegetables, as long as summer irrigation is available. California, Chile, southern Europe and parts of Australia and South Africa fall in this group.
• Humid tropical climates allow year-round growth of crops such as oil palm, cocoa, bananas, rice and sugarcane, but heavy rain brings leaching, disease pressure and erosion.
• Cold climates have short seasons but long summer days, which suit fast crops such as canola, barley, potatoes and forage. Our article on which agriculture needs the coldest climates covers this end of the range.

How a changing climate shifts the picture

The Intergovernmental Panel on Climate Change’s Sixth Assessment Report on impacts and adaptation concludes that warming has already made heat extremes more frequent and has slowed growth in agricultural productivity, with effects that differ strongly by region. For a farm, the change mostly shows up as variability rather than a steady trend: earlier springs with late frosts, heat during flowering, longer dry spells between heavier downpours, and pests and diseases moving into areas that used to be too cold for them. Some cold regions gain growing days, while many warm regions lose them.

That’s why the hub’s country pieces matter. A typhoon-exposed rice farm in the Philippines and a grain farm in Germany face different problems, and our article on altered rainfall patterns shows how the same trend lands differently by place.

Climate risks farms plan for

Our hub articles on protecting crops from frost and on flood risk in California and Mississippi deal with specific hazards in more depth.

Choosing crops and varieties for a shifting climate

When growers ask whether their climate suits a crop, the most useful data is local and long-term: at least 20 to 30 years of temperature and rainfall from the nearest weather station, with attention to the bad years as well as the averages. For perennial crops, winter cold matters as much as summer heat. In the US, the USDA Plant Hardiness Zone Map shows the average coldest winter temperature by area, and the 2023 update moved many places into a warmer zone. Fruit trees also need enough winter chill hours to flower well, and warmer winters can leave some varieties short. For annual crops, look at the length of the frost-free season and at how often heat or drought coincides with flowering. Changing maturity groups or planting dates is usually cheaper than changing crops.

Building climate resilience on the farm

Climate-resilient agriculture is mostly good farming done deliberately. Soils with more organic matter hold more water and drain better. Diverse rotations and a mix of varieties with different maturity dates spread risk, so one bad week doesn’t hit everything at once. Irrigation scheduled to crop need, rather than to the calendar, stretches limited water further. Crop insurance and savings cover the years when nothing works. Our guide to climate-resilient agriculture practices goes through seven of them with examples.

Using weather and satellite data

Better information turns a lot of climate risk into a scheduling problem. Local weather stations and forecast services give rainfall, temperature and frost warnings, and weather APIs bring the same data into farm software. Our comparison of real-time weather APIs for agriculture covers the options.

Satellites add what’s happening in the crop itself. With our satellite crop monitoring, each field gets a water-need figure in millimeters per day for the next seven days, along with crop health, and radar images keep readings coming when cloud or smoke blocks optical satellites. A drought or heat event then shows up as a change in specific fields that you can act on. After a few seasons, the same records show which fields suffer first in a dry spell and which recover fastest after heavy rain.