Farmer Irrigation Practices Exceed Crop Water Requirements in Brinjal Cultivation: Evidence from Northern Kerala

The present study demonstrated that brinjal farmers in Kannur district consistently applied irrigation volumes exceeding scientifically recommended requirements. Although intended to safeguard crop productivity, such over-irrigation may lead to inefficient water use, increased energy consumption, and a higher environmental footprint. In regions experiencing seasonal water stress, these practices could undermine long-term water security and agricultural sustainability. The findings highlight the need for wider adoption of crop water requirement-based irrigation scheduling to improve water productivity and reduce unnecessary resource use. Strengthening extension support and enhancing farmer awareness regarding efficient irrigation practices could facilitate the transition towards more sustainable vegetable production systems. Optimizing irrigation management offers a practical pathway to conserving freshwater resources while simultaneously contributing to climate-smart agriculture through reductions in irrigation-related carbon emissions.

Allen, R. G., Pereira, L. S., Raes, D., & Smith, M. (1998). Crop evapotranspiration: Guidelines for computing crop water requirements (FAO Irrigation and Drainage Paper No. 56). FAO. Clarke, D., Smith, M., & El-Askari, K. (2001). CropWat for Windows: User guide. FAO. CWC. (2019). Reassessment of water availability in India using space inputs. Central Water Commission, Government of India. Falkenmark, M. (2013). Growing water scarcity in agriculture: future challenge to global water security. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 371. FAO. (2017). The future of food and agriculture – Trends and challenges. FAO. Giordano, M., Namara, R., & Bassini, E. (2023). The Impacts of Irrigation: A Review of Published Evidence. World Bank, Washington, DC. IMD. (2020). State climate profile: Kerala. India Meteorological Department. Multsch, S., Elshamy, M. E., Batarseh, S., Seid, A. H., Frede, H.-G., & Breuer, L. (2017). Improving irrigation efficiency will be insufficient to meet future water demand in the Nile Basin. Journal of Hydrology: Regional Studies, 12, 315–330. https://doi.org/10.1016/j.ejrh.2017.04.007 Pereira, L. S., Allen, R. G., Smith, M., & Raes, D. (2015). Crop evapotranspiration estimation with FAO56: Past and future. Agricultural Water Management, 147, 4–20. https://doi.org/10.1016/j.agwat.2014.07.031 Prinz, D., & Malik, A. H. (2004). More yield with less water. European Water, 5(6), 47-58.