Match the crops with seed hardening chemicals
| crops | seed hardening chemicals |
| (a) Pearl millet | 1. Cycocel |
| (b) Maize | 2. CaCl₂ |
| (c) Cotton | 3. KH₂PO₄ |
| (d) Groundnut | 4. KCl |
Pearl millet seeds are hardened using KH₂PO₄.
Maize seeds are treated with KCl.
Cotton seeds are hardened with cycocel.
Groundnut seeds are treated with CaCl₂.
Seed hardening improves drought tolerance.
Hence correct order is 3-4-1-2.
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Match the crops with seed hardening chemicals
| crops | seed hardening chemicals |
| (a) Pearl millet | 1. Cycocel |
| (b) Maize | 2. CaCl₂ |
| (c) Cotton | 3. KH₂PO₄ |
| (d) Groundnut | 4. KCl |
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Harrington Thumb Rule says that storage potential of seed doubles for every °F decrease in temperature of
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