Table 3.
Airborne sporangia concentrations (mean and standard deviation)
| Plots | Sampling time | Total nº airborne sporangia (trap A+B) per 1.57 mm2 visual field at mag. 200× | Nº airborne sporangia in trap A per 1.57 mm2 visual field at mag. 200× | Nº airborne sporangia in trap B per 1.57 mm2 visual field at mag. 200× |
|---|---|---|---|---|
| Plot A | May | 247 (21.77) | 38 (7.34) | 209 (29.57) |
| June | 12 (1.46) | 6 (1.20) | 6 (1.50) | |
| July | 58 (5.79) | 5 (0.79) | 53 (4.25) | |
|
| ||||
| Total | 317 (13.55) | 49 | 268 (17.82) | |
|
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| Plot B | May | 348 (11.36) | 160 (10.34) | 188 (12.60) |
| June | 140 (6.21) | 73 (5.27) | 67 (7.22) | |
| July | 150 (10.17) | 32 (5.41) | 118 (13.00) | |
|
| ||||
| Total | 638 (9.91) | 265 (8.02) | 373 (11.48) | |
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| Plot C | May | 375 (30.25) | 25 (3.20) | 350 (23.20) |
| June | 72 (6.92) | 29 (4.08) | 43 (6.20) | |
| July | 80 (8.40) | 62 (4.80) | 18 (3.60) | |
|
| ||||
| Total | 527 (8.20) | 116 (9.20) | 411 (12.20) | |
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| Plot D | May | 740 (25.76) | 244 (11.61) | 496 (33.00) |
| June | 204 (11.02) | 111 (14.28) | 93 (7.74) | |
| July | 186 (16.57) | 81 (11.22) | 105 (20.30) | |
|
| ||||
| Total | 1130 (20.20) | 336 (12.97) | 694 (25.26) | |
Two supports were placed in each plot (at different altitudes if possible), and the traps they supported (A and B) at two heights (1 and 2 m) above the soil.