Washing plant tissue samples for mineral nutrient analysis
Plant tissue analysis provides an assessment of the nutritional status of fruit trees and crop plants, in order to make fertilizer recommendations. To get accurate test results, it is essential to prepare the best tissue samples possible, and this includes cleaning and hand-washing leaves to remove any dust or other surface contamination. Unless leaves are washed, the analysis will report what is on the leaves, instead of what is in them. This publication provides information on how to choose the correct cleaning solution and the proper washing method. It also provides guidance for obtaining and sending quality leaf samples for analysis.