# Multi-spectral evaluation of total nitrogen, phosphorus and potassium content in soil using Vis-NIR spectroscopy based on a modified support vector machine with whale optimization algorithm

> Research article (Soil and Tillage Research, 2025) · cited 11× · AI/ML

**Wikidata**: [openalex:W4409578391](https://www.wikidata.org/wiki/openalex:W4409578391)  
**Source**: https://4ort.xyz/entity/multi-spectral-evaluation-of-total-nitrogen-phosphorus-and-potassium-content-in-soil-using-vis-nir-spectroscopy-based-on