Adapting Crops and Fertilizer Inputs to Changing Weather Patterns

Climate change is reshaping agriculture, altering rainfall patterns, intensifying heatwaves and shifting pest pressures. For farmers, adaptation often means changing what they grow and how they manage inputs. Fertilizer is a central part of this adaptation, yet its role is rarely discussed in the climate conversation. In a panel on resilience, Amit Gupta Agrifields DMCC reflected on how nutrient management strategies must evolve alongside crops. Drought-tolerant varieties and crop diversification are part of the story, but without corresponding adjustments in fertilization, the benefits may be limited.

Consider the findings from a study of Kenyan farmers coping with climate stress. Roughly 55 percent of farmers reported adopting drought-tolerant varieties; others diversified their crops or switched to early-maturing types. Such strategies, while effective in mitigating risk, alter nutrient requirements. Drought-tolerant sorghum may need different ratios of nitrogen and potassium than maize; short-season pulses may fix their own nitrogen but still require phosphorus. Applying the same fertiliser blends as before can lead to inefficiency or nutrient depletion. This pattern is evident in parts of India, where farmers pivot from rice to millets or pulses in response to water scarcity. Without rethinking fertiliser regimes, soils can become imbalanced.

Climate stress also affects nutrient uptake directly. Heat and drought reduce root growth and nutrient mobility, meaning that plants may not absorb fertilisers even when applied. Splitting applications, using controlled-release formulations or applying nutrients through irrigation can help, but only if infrastructure is in place. In rain-fed regions, foliar sprays during critical growth stages may be more effective. Extension services and researchers in India are experimenting with such approaches, yet adoption is uneven. Farmers need practical guidance that takes local climate projections into account.

Fertilizer supply chains are also strained by climate impacts. Extreme weather can disrupt mining, processing and transport. Floods in coastal ports delay shipments; storms damage rail lines. The recent closure of the Strait of Hormuz during conflict illustrated how geopolitical crises intersect with physical vulnerabilities, highlighting the importance of building buffer stocks and diversified sourcing. Developing local fertilizer production, such as small-scale composting or on-farm nutrient recycling, can reduce dependence on external inputs. This ties climate adaptation to soil health and circular economy principles.

In adapting to a warmer world, farmers must integrate agronomic, economic and environmental considerations. Fertilizer strategies that were optimal under stable climates may no longer suffice. Policy makers and industry leaders, including voices like Amit Gupta Agrifields DMCC, advocate for adaptive extension services that work with farmers to monitor soil conditions and adjust inputs accordingly. They also highlight the need for insurance schemes and credit products that recognise the risk of climate-induced crop failure. Ultimately, building resilience means recognising that climate adaptation is not just about weather; it is about systems. By aligning nutrient management with changing crops and conditions, agriculture can better withstand the shocks ahead.