Intelligent Crop Recommendation: A Neural Network-Based Precision Agriculture Decision System

This article introduces a feedforward neural network project built using TensorFlow and Keras, which aims to predict the most suitable crops to grow based on soil nutrients (nitrogen, phosphorus, potassium, pH value) and climate data (temperature, humidity, rainfall). It provides data-driven decision support for precision agriculture. The project is open-source and can assist farmers, agricultural consultants, and management departments in making scientific planting decisions.

Global agriculture faces challenges such as population growth, limited arable land, and climate change. Traditional experience-based planting decisions struggle to cope with complex environments. Precision agriculture emphasizes refined management using information technology, and crop selection is a key link. This project addresses this issue by using machine learning to learn the soil-climate-crop relationship.

Dataset: Contains 7 features (nitrogen, phosphorus, potassium, pH, temperature, humidity, rainfall) and 22 crop labels. Preprocessing includes standardization and one-hot encoding. Model Architecture: Feedforward neural network with an input layer of 7 neurons, hidden layers of 128→64→32 (ReLU activation), an output layer of 22 neurons (Softmax), and regularization using Dropout, L2, and early stopping. Training: Adam optimizer, categorical cross-entropy loss, 70% training set, 15% validation set, 15% test set, with early stopping. Implementation: Built with Keras, the code is concise and supports model saving and prediction interfaces.

Evaluation metrics on the test set include accuracy, precision, recall, and F1 score. The model's overall accuracy reaches 96-98%, and the macro-average F1 is approximately 0.95, indicating that it can effectively learn the soil-climate-crop mapping. Confusion matrix analysis identifies pairs of crops that are easily confused, providing directions for improvement.

1. Farmer decision-making: Input soil and climate data to get recommended crops and their confidence levels;
2. Agricultural consulting: Provide personalized advice to farmers;
3. Regional planning: Analyze crops suitable for a region and optimize the structure;
4. Climate research: Simulate crop adaptability under climate change.

Limitations: The dataset mainly covers India, and other regions need validation; dynamic factors such as crop rotation and pests/diseases are not considered; only yield is optimized. Improvements: Expand the dataset; introduce RNN/LSTM to handle time-series features; multi-objective optimization (yield, profit, sustainability); use ensemble learning to improve stability.

The project's open-source contributions include: complete code (full-process implementation), cleaned agricultural dataset, performance benchmark model, and machine learning entry-level practice cases, which help the community develop.

This project demonstrates the application potential of machine learning in agriculture, transforming experience into a scientific decision-making tool. With the development of IoT and satellite remote sensing technologies, precision agriculture will become more intelligent, and this project is an important step.