Dataset used : https://www.kaggle.com/emmarex/plantdisease
Tensorflow is a popular end-to-end Machine Learning Library from Google whcih supports developing Machine Learning Models and Data Modelling. It has a comprehensive, flexible ecosystem of tools, libraries and community resources that lets researchers push the state-of-the-art in ML and developers easily build and deploy ML powered applications.

Refer this for knowing how to use transfer learning for Crop Disease Detection.
Before contributing to this project do check CONTRIBUTING.md file and CODE_OF_CONDUCT.md file.