Table 2.
Comparison of reported and modelled number of generations of Chilo partellus
| Location | Authors | Reported number of generations per year | Modelled number of generations per year | Number of degree-days >12 °C |
|---|---|---|---|---|
| Chitwan, Nepal | Neupane et al. (1985) | At least 5 | 6.29 | 3738 |
| Bangalore, southern India | Jalali and Singh (2001) | 6–7, calculated from estimated developmental thresholds for each life stage | 6.21 | 3619 |
| Ludhiana, north-west India | Atwal et al. (1969) | 6 | 6.61 | 3994 |
| Rawalpindi, Punjab region, Pakistan | Attique et al. (1980) | 4–5 by August (no data to support statement) | 5.42 | 3208 |
| Yousafwala, Punjab region, Pakistan | Attique et al. (1980) | 4–5 by August (no data to support statement) | 6.78 | 4115 |
| Mozambique | Sithole (in ICRISAT 1989) and Kfir et al. (2002), both citing Berger pers. comm. and Berger 1981 | At least 3 | 3.80–7.58 | 2000–4600* |
| Brits, South Africa | Kfir (1992) | 2.5 | 3.97 | 2206 |
| Warmbaths, South Africa | Kfir (1992) | 1.5 | 3.93 | 2172 |
| Potchefstroom, South Africa | Van Rensburg and Van den Berg (1992) | 3-4; not clear whether the 4th generation is completed or not | 3.14 | 1664 |
* Degree-days for Mozambique were taken for grid cells showing the lowest and highest number of generations, and therefore the lowest and highest number of degree-days above 12 °C