Preliminary validation of soybean germination test

Abstract

On the basis of experience from practice, it is observed certain level of disagreement between results of laboratory germination test (ISTA) and filed emergency of soybean. This research should evaluate and validate power of prediction of standard laboratory test of soybean seed germination. Experiment included three soybean varieties from three seed lots. Sample from each lot were sieve fractionated and obtained five sub-samples of different seed size. From each subsample, laboratory germination were determinates, and all subsamples were planted in the field for field emergency evaluation. It was observed influence of thousand seed weight (TSW) on results of laboratory germination test, where the highest germination was observed for TSW between 165 and 172g. This relation was not confirmed in field experiment. In order to sample the predictive power lab test, considered the absolute difference between the lab germination and field emergence (delta).