Spatial pattern of population distribution of cotton aphids: Aphis gossypii (Glov.) and pink boll worm: Pectinophora gossypiella

The various indices of dispersion namely variance-mean ratio, Lloyd's indices of mean crowding(X*) and patchiness index (X*/), David and Moore's index, Lexis index, Taylor's power law and Iwao's regression were used to determine the spatial pattern of population distribution of cotton aphid, Aphis gossypii Glov and pink bollworm, Pectinophora gossypiella.