The tetrazolium test for soybean seeds.

Abstract

History. Principles of the test. Equipment and supplies. Seed evaluation. Diagnosis of the causes of soybean seed deterioration. Identification of levels of viability. Class 1 (very high vigor). Class 2 (high vigor). Class 3 (medium vigor). Class 4 (low vigor). Class 5 (very low vigor). Class 6 (non-viable). Class 7 (non-viable). Class 8 (dead seed). Recording and interpreting the results. Precision and accuracy of results. Advantages and limitations of the test. When the test should be applied.