Fig. 1From: Management of cotton bollworms Helicoverpa armigera and Earias vittella by entomopathogenic nematodesEffect of EPN strains at three application rates on yield of cotton infested with Helicoverpa armigera (location 1) and Earias vittella (location II). Bars with the same letter do not differ significantly according to Tukey–Kramer test at P < 0.05. Capital letter represents field experiment I and small letter denotes field experiment IIBack to article page