Hydroponics: A Sustainable Way of Farming

Abstract

This review-based study aims to assess hydroponics as a sustainable and economically viable alternative to conventional agriculture. By analyzing both technical approaches and economic indicators, it highlights hydroponics’ potential to increase productivity while conserving critical resources. Notably, hydroponic systems use up to 90 per cent less water and offer a high internal rate of return (60.6%), making them a promising solution for food security and climate resilience. The growing global population and declining per capita land availability pose significant challenges to traditional agriculture. Furthermore, the excessive use of chemical fertilizers and pesticides continues to degrade soil health and food quality. As a sustainable and resource-efficient alternative, soil-less cultivation techniques such as hydroponics, aeroponics and aquaponics are gaining momentum. This review focuses on hydroponics, an innovative method of growing plants in nutrient-rich water solutions without soil. It explores its applications in vegetable and fodder production, highlights environmental and economic benefits, and presents a detailed cost-benefit analysis of a system established using the Nutrient Film Technique (NFT). The study reveals strong economic viability with a short payback period (9.43 months), a benefit-cost ratio of 5.317 and a profitability index of 4.31. Despite challenges such as high initial investment, technical complexity and power dependency, hydroponics holds immense potential, especially when combined with renewable energy, automation and farmer training. With strategic policy support and increased awareness, hydroponics can play a transformative role in ensuring food security and promoting sustainable agriculture in India and beyond.