Research Article
Ethephon Stimulation and Yield Response of Some Hevea Clones in the Humid Forests of South West Cameroon
Table 1
Correlation coefficients between yield and weather variables.
| Yields | Clone | Cumulative rainfall (mm) | Days of insolation | Mean temperature | Mean relative humidity |
| Field production (kg/ha) | GT 1 | 0.8046** | −0.4763 | −0.8084** | 0.8337** | IRCA 18 | 0.7173** | −0.7705** | −0.4506 | 0.6273* | IRCA 19 | 0.6528* | −0.2026 | −0.6067* | 0.8264** | PB 235 | 0.7558** | −0.6529* | −0.8139** | 0.6147* | PB 260 | 0.5524 | −0.4637 | −0.6094* | 0.5205 | RRIC 100 | −0.0883 | −0.2171 | −0.0741 | −0.0094 | RRIC 110 | 0.7438** | −0.3517 | −0.692* | 0.738** |
| Tree productivity (g/t/t) | GT 1 | 0.8432** | −0.6025* | −0.8481** | 0.7011* | IRCA 18 | 0.562 | −0.6156* | −0.2197 | 0.2983 | IRCA 19 | 0.6024* | −0.2388 | −0.5369 | 0.5979* | PB 235 | 0.6102* | −0.5444 | −0.6749* | 0.5257 | PB 260 | 0.4454 | −0.4981 | −0.5089 | 0.2663 | RRIC 100 | 0.7432** | −0.6047 | −0.7737 | 0.5794 | RRIC 110 | 0.6792* | −0.3864 | −0.6133* | 0.501 |
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Significant at **1%; *5%.
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