Agri Tech: An AI-Powered Multilingual Farmer Advisory System for Smart Agricultural Decision-Making

Agriculture forms the backbone of India's economy, supporting over 58% of the rural population and contributing approximately 17% to the national GDP. Despite its significance, the agricultural sector remains severely underserved by modern technology, leaving millions of farmers without timely access to critical crop advisory services, weather guidance, market pricing intelligence, or disease diagnostics. Agri Tech is a comprehensive, AI-powered multilingual farmer advisory system designed to bridge this gap by integrating multiple intelligent modules into a single accessible platform. The system leverages advanced Natural Language Processing (NLP), machine learning-based crop recommendation algorithms, satellite and API-sourced weather forecasting, computer vision for plant disease detection, and real-time mandi price retrieval through government agricultural data APIs. Key features include a conversational AI chatbot supporting Hindi, Marathi, and English; a crop recommendation engine utilizing soil parameter analysis with ensemble learning; a weather alert system for proactive agricultural planning; a plant leaf disease detection module using Convolutional Neural Networks (CNN); a government scheme navigator providing personalized scheme recommendations; and a smart marketplace connecting farmers directly with buyers. Experimental evaluations demonstrate strong accuracy across all modules. The crop recommendation model achieves 97.2% accuracy using a Random Forest classifier trained on NPK-soil dataset. The plant disease CNN model achieves 96.8% classification accuracy across 38 disease classes. Agri Tech is deployed as a cross-platform mobile and web application, designed for usage on low-bandwidth rural networks with multilingual voice and text interfaces. This system represents a significant step toward democratizing agricultural intelligence for the 150+ million smallholder farmers of India.