Habitat diversity: implications for the conservation and use of predatory insects of Helicoverpa spp. in cotton systems in Australia

alfalfa australia australie carthamus carthamus tinctorius coleoptera coton cotton depredadores farming systems gossypium helianthus helianthus annuus helicoverpa insecta insecte utile lucerne luzerne lycopersicon lycopersicon esculentum medicago medicago sativa monocultivo monoculture population density predators useful insects