Redefining IMSCS 2013 for seed standard ODV in Rice

Author: V. Swarnalatha, K. Prabhavathi, K. Parimala and T. Pradeep

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Abstract

Seed certification is a legally recognised framework for quality control, seed multiplication, and production because high-quality seeds are the foundation of the agricultural industry, ensuring national economy and food security. The quality seed must adhere to Indian Minimum Seed Certification Standards (IMSCS), but on a global scale, seed quality assurance systems for seed export are governed by International Seed Testing Association and Organization for Economic Cooperation and Development (OECD) standards (ISTA). The focus of this study has been on whether the field criteria defined in the Indian Minimum Seed Certification criteria (IMSCS, 2013) continue to hold good in today's era of mechanization used in the field to avoid genetic contamination in paddy. The Foundation and Certified seed samples (Three samples of three different varieties) from Telangana state seed corporation and Seed certification agency were used for testing ODVs in paddy. The samples were thoroughly examined for the existence of ODV while maintaining reference samples in hand. From the mean results of 3 years of experimentation, it was observed that over all mean value of 10.63 ODV/ kg seed were observed which is on par with the recommendations given by IMSCS 2013 for foundation seeds and 31.33 ODV /kg seed over all mean value was recorded which is higher than recommended 20 ODV/kg seed as by IMSCS2013 in case of Certified Seed of fine (small), medium and coarse (long) varieties of paddy. To boost production and productivity while mitigating the negative effects of climate change, a consistent as well as timely delivery of high-quality seed for all crops and varieties at reasonable costs at the local level is required.

Keywords

Rice, Quality Seed, ODV, IMSC, Seed Certification, and quality parameters

Conclusion

Single seed lot for paddy seeds should not be more than 200 quintals (≤1 to ≥200q). Seed from fields that met certification criteria at the field stage must be transported to the processing facility as soon as feasible after harvesting. The Certification Agency, on the other hand, is authorized to employ a screen with a smaller aperture size than required. With proper justifications for screen aperture lowering as a result, no seed smaller than the bottom screen utilized in the final processed seed may exceed 5.0% (by weight). Keeping this type of alternatives at hand and with increasing change to the adoption of seed-to-seed mechanization, there is an out most necessary for a revision of ODV standards in the case of certified seed class, as observed ODVs (31.33/kg. of seed) were much more than ODV seed standards as per IMSCS, 2013 (20 no./kg). However, in the case of foundation seed, there is no need to redefine ODV seed standards, as observed ODVs (10.63 no./kg.) were within the permissible limits as per IMSCS, 2013 (10 no./kg). Hence, the seed standards for the maximum permissible limit of ODVs can be maintained at the current level of 10/kg seed in the foundation seed class.

References

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How to cite this article

V. Swarnalatha, K. Prabhavathi, K. Parimala and T. Pradeep (2023). Redefining IMSCS 2013 for seed standard ODV in Rice. Biological Forum – An International Journal, 15(5a): 312-316.