Standardization of Sieve Sizes for Grading of Redgram/TS 3R Seeds

Abstract

Seed grading is the important practice for better crop establishment and to improve recovery percentage of seeds and also useful in separation of quality seed in a seed lot. In this context the present study was conducted to know the influence of size grading using different sieves of 3.75 mm, 4.00 mm, 4.3 mm, 4.50 mm and 4.75 mm size. The results revealed that seed recovery in 3.75mm sieves was higher than the seeds retained other sieves but the quality of seeds retained in 3.75mm sieves was higher than the Minimum Seed Certification Standard level for germination. Hence, grading of redgram cv., TS 3R size graded with 3.75mm (S) sieve recorded more seed recovery with Minimum Seed Certification standard (MSCS) for seed approval by Govt. of India.