SPECTRO ANALYTICAL INSTRUMENTS
Plant Tissue Sampling
This handbook addresses a number of important components of plant tissue sampling such as detailed procedures for sample collection, specific plant part and location on plants, stage of plant growth or development, time of sampling, number or quantity of samples per plant, and number of plants to select for sampling. Following these directions allows the sampler to achieve reasonable statistical reliable results. Sampling instructions are quite specific in terms of plant part and stage of growth, because standards used for comparison of tissue test results were established using these criteria of plant samples. With corn there are at a miniumum four critical stages for leaf analysis, Figure 21-1.
Figure 21-1 . Age of the plant matters as to the level of essential plant nutrients accumulating in the plant leaf sampled and the sufficiency range chosen for a response to a reported deficiency or toxicity.