The Journal of Environmental Engineering and Landscape Management recently featured a study by Arunya K G and Krishnaveni M that explores how marginal farmers in India can withstand the increasing frequency of extreme weather events. The research focuses on the Paravanar river basin in Tamil Nadu, a region where traditional agricultural cycles are being disrupted by intense monsoon patterns and cyclonic activity. By analyzing over four decades of rainfall data, the authors identified specific thresholds where precipitation transitions from being beneficial to becoming destructive. This data serves as the foundation for a new framework of resilience that moves away from reactive farming and toward a proactive, technology-driven approach. Central to this transition is the adoption of climate-smart agriculture, which seeks to balance the immediate need for food security with the long-term goals of environmental sustainability and economic stability for small-scale landholders.

The findings highlight a significant vulnerability in regional cropping patterns, particularly for those growing coriander, which was identified as the most susceptible crop to waterlogging and pest attacks following heavy storms. To combat these risks, the study implemented a multifaceted strategy involving the Meghdoot mobile application for localized weather forecasting and Integrated Pest Management techniques. By receiving alerts five days in advance, farmers were able to adjust their sowing schedules, improve field drainage, and apply protective covers. These simple yet effective interventions proved successful in a trial involving thirty-three farmers across seven villages. The results were encouraging, as the majority of participants were able to complete their second harvest season with minimal financial setbacks, demonstrating that even modest technological integration can provide a substantial safety net for those with limited resources.

A vital component of this resilience strategy is the promotion of biochar production, which addresses the environmental pillar of climate-smart agriculture by reducing greenhouse gas emissions. Biochar is a stable, carbon-rich form of charcoalCharcoal is a black, brittle, and porous material produced by heating wood or other organic substances in a low-oxygen environment. It is primarily used as a fuel source for cooking and heating.   More created by breaking down organic waste in an oxygen-free environment. The researchers suggested that farmers could form social enterprises to operate biochar kilns, turning agricultural leftovers into a valuable soil amendmentA soil amendment is any material added to the soil to enhance its physical or chemical properties, improving its suitability for plant growth. Biochar is considered a soil amendment as it can improve soil structure, water retention, nutrient availability, and microbial activity.   More that improves nutrient retention and soil structure. This practice not only helps in mitigating the impacts of heavy rainfall by preventing nutrient leachingLeaching is the process where nutrients are dissolved and carried away from the soil by water. This can lead to nutrient depletion and environmental pollution. Biochar can help reduce leaching by improving nutrient retention in the soil.   More but also offers a secondary stream of income. Survey data indicated that nearly half of the farmers were ready to adopt this social entrepreneurship model immediately, while others expressed a willingness to participate after witnessing a successful local demonstration.

Ultimately, the study proves that the decline in agricultural productivity in the Cuddalore district can be reversed through the strategic application of climate-smart practices and community-led initiatives. The success of the revived coriander cultivation suggests that the combination of real-time weather data and sustainable soil management through biochar can empower marginal farmers to remain on their land despite the challenges of a changing climate. By focusing on low-cost, high-impact solutions like better drainage, shifting crop seasons, and localized emissions reduction, these communities are building a template for sustainable development. The positive response from the farming community toward biochar kilns and digital forecasting tools indicates a growing appetite for innovation that prioritizes both the health of the planet and the livelihoods of those who feed it.

Source: Arunya, K. G., & Krishnaveni, M. (2025). Heavy rainfall resilience: Adoption of climate smart agriculture among marginal farmers in a sub-basin of India. Journal of Environmental Engineering and Landscape Management, 33(4), 428-439.