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LIVE SEED SEPARATION IN GROUNDNUT
What is?
Groundnut seed are classified as micro biotic due to their fast deteriorating nature due to its oil content. It also has production problems that lead to the yield of poor quality seeds. But in groundnut for getting required yield plant population has to be maintained (33plants / sq.m.) This warrants the need of sowing good quality seed selection technique is the live seed separation. Hence live seed separation technique is the separation of germinable seed from dead seed.
Methodology
- Separate the pest attacked, brokened and immmatured seeds
- Soak the seeds in equal volume of 0.5% CaCl2 salt solution for 6 hrs.
- For preparation of 0.5% CaCl2 solution we have to dissolve 125 gm of CaCl2 in 25 lit of water.
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Keep the seeds in between gunny bags in thin layer for about 16 hrs.
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After 16hrs the live seeds radicle might have germinate up to 5mm.
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Separate those germinated seeds from that seed lot and dry it in shade.
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For every 2hrs internal the germinated seeds can be separated from that lot for about 3-5 times.
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That seeds can be dried in the shade.
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The remaining ungerminated seeds are considered as dead ones.
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Further these germinated seeds are treated with either Carbendazim (Fungicide) or Rhizobium.
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Sprouted seeds can be used for sowing.
Precautions
- Do no spread as thick layer
- Avoid fungal spread in the gunny bag
- Do not allow to over sprout
- Shade dry the seed of each interval of collection separately
Advantages
- Dead seeds are used for domestic purpose especially for oil extraction.
- Seed rate will be reduced.
- Calcium deficiency can be overcome by soaking the seeds in CaCl2 solution.
- About 10-15% of the yield can be increased.
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