Dispersion indices, including (K) the negative binomial distribution, Green's coefficient of dispersion (CO mean crowding (m"), Lioyd's (Patchiness index (m/m*) and variance mean ratio (v/m), were calculated for the populations of two cotton bollworm moths, Pectinophora gossypiella and Earias insutana using light traps allover 2 years (January 1997 to December 1998) at five different Governorates, El-Minia, ElSharkia, Kafr Et-Sheikh, Demeate and El-Kalubia. Comparison showed that: K, Cx and Wm' as well as slopes from regression, all indicated that under the conditions of this test (at densities tested), the populations of the two pests were random. The variance/mean (v/m) ratio fluctuated considerably more than other indices examined, which by comparison, appears less reliable than previously thought.
ROMEILAH, M. A. (2000). MEASURING THE DISTRIBUTION OF PINK AND SPINY BOLLWORMS IN DIFFERENT GOVERNORATES IN EGYPT. Egyptian Journal of Agricultural Research, 78(3), 1091-1104. doi: 10.21608/ejar.2000.322669
MLA
MOHAMED A. ROMEILAH. "MEASURING THE DISTRIBUTION OF PINK AND SPINY BOLLWORMS IN DIFFERENT GOVERNORATES IN EGYPT", Egyptian Journal of Agricultural Research, 78, 3, 2000, 1091-1104. doi: 10.21608/ejar.2000.322669
HARVARD
ROMEILAH, M. A. (2000). 'MEASURING THE DISTRIBUTION OF PINK AND SPINY BOLLWORMS IN DIFFERENT GOVERNORATES IN EGYPT', Egyptian Journal of Agricultural Research, 78(3), pp. 1091-1104. doi: 10.21608/ejar.2000.322669
VANCOUVER
ROMEILAH, M. A. MEASURING THE DISTRIBUTION OF PINK AND SPINY BOLLWORMS IN DIFFERENT GOVERNORATES IN EGYPT. Egyptian Journal of Agricultural Research, 2000; 78(3): 1091-1104. doi: 10.21608/ejar.2000.322669
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