Table 2.
Parameters of the relationships between longevity (σ, days), temperature (t, °C) and moisture content (%, wb) above and below the critical moisture content (mc)
| Relationships between longevity, temperature and moisture |
|||||||||
|---|---|---|---|---|---|---|---|---|---|
| Above mc |
|||||||||
| Species | t (°C) | Below mc Intercept (s.e.) | mc (%, wb) (s.e.) | ERH at mc (%) | K (s.e.) | KE (s.e.) | CW (s.e.) | CH (s.e.) | CQ (s.e.) |
| T. pratense | 65·2 | 1·621 (0·010) | 4·0 (3·6–4·3) | 10·8 | 4·882 (0·227) | 5·452 (0·255) | |||
| 49·9 | 2·527 (0·010) | 4·7 (4·1–5·4) | 11·6 | 5·892 (0·329) | 5·008 (0·356) | ||||
| 39·9 | 3·106 (0·023) | 5·4 (4·9–6·0) | 13·1 | 7·051 (0·296) | 5·364 (0·256) | ||||
| 30·2 | 3·518 (0·014) | 5·4 (4·8–6·1) | 13·1 | 6·816 (0·263) | 4·516 (0·275) | ||||
| 30·2–65·2* | 8·593 (0·495) | 5·096 (0·162) | 0·0225 (0·0203) | 0·000602 (0·000208) | |||||
| 30·2–65·2+ | 8·866 (0·455) | 5·130 (0·195) | 0·0296 (0·0180) | 0·000561 (0·000184) | |||||
| M· sativa | 65·2 | 2·105 (0·020) | 4·2 (3·5–4·9) | 10·4 | 6·069 (0·491) | 6·402 (0·517) | |||
| 49·9 | 3·120 (0·020) | 5·3 (4·4–6·4) | 12·9 | 8·230 (0·624) | 7·070 (0·637) | ||||
| 39·9 | 3·654 (0·025) | 5·5 (4·8–6·4) | 13·5 | 8·840 (0·473) | 6·963 (0·498) | ||||
| 30·2 | – | – | – | 8·753 (0·647) | 6·042 (0·638) | ||||
| 30·2–65·2* | 11·065 (0·771) | 6·739 (0·300) | 0·0385 (0·0303) | 0·000508 (0·000309) | |||||
| 30·2–65·2+ | 10·713 (0·310) | 6·682 (0·323) | 0·0296 (0·0180) | 0·000561 (0·000184) | |||||
ERH = equilibrium relative humidity.
*
Estimates of KE, CW, CH and CQ fitted independently to each species.
+
Estimates of CH and CQ constrained to common values for both species, KE and CW not constrained.