- Author: Zheng Wang
How crop growth responds to biostimulant application is important for growers to know the product efficacy. Besides fruit yield, other parameters are equally important as indicators to show the effects. Herein, we use NDVI (normalized difference vegetation index) meter to assess the live green vegetation of processing tomatoes. The NDVI values range from 0-1. The higher the value, the more green canopies are observed.