Soil Fertility Prediction Using Combined USB-microscope Based Soil Image, Auxiliary Variables, and Portable X-Ray Fluorescence Spectrometry. - Shubhadip Dasgupta; Satwik Pate; Divya Rathore; L. G. Divyanth; Ayan Das 006; Anshuman Nayak; Subhadip Dey; Asim Biswas; David C. Weindorf; Bin Li 008; Sérgio Henrique Godinho Silva; Bruno Teixeira Ribeiro; et al. (CoRR, 2024)