Population dynamics of filbert aphid, Myzocallis coryli (Goetze) on hazel bushes to an agroforestry system
2000
Naeem, M. (University of Arid Agriculture, Rawalpindi (Pakistan)) | Compton, S.
The densities of filbert (hazelnut) aphid, Myzocallis coryli (Goetze) on the hazel bushes were measured in both 1993 arid 1994. The aphids were present on the hazel during from May to September, and peaked in July. Significantly greater densities, of M. coryli were found in block 1 in the tree rows in both years (1993 & 1994). The population densities of aphids on hazel bushes were found to be significantly greater in the forestry plots than in the tree rows. The fewer predators observed provided too small a sample size for any meaningful comparisons of percentage-predation to be made.
显示更多 [+] 显示较少 [-]