Weed Species in Citrus Orchards in Different Ecological Conditions and Comparison of Mealybug Species on Weed Species

Weeds interacting with various factors within the agroecosystem may serve as hosts for plant diseases and other pests, perform as main and alternative hosts or they could be overwintering sites for those organisms. Interaction between mealybugs and weeds may be one of the examples which could be given. For this reason this project was conducted in the province of Adana between 2015- 2016 in six different orange orchards on different locations (Karata？-Do？ankent, Do？ankent-？mamo？lu, ？mamo？lu-Kozan) Weed species and the mealybug species on top of them were investigated. 78 weed species belonging to 24 plant families were identified. A citrus mealybug, Planococcus citri (Risso) considered as the most substancial mealybug in citrus orchards, common mallow (Malva sylvestris L.), redroot pigweed (Amaranthus retroflexus L.), common purslane (Portulaca oleracea L.), crimson clover (Trifolium incarnatum L.), black nightshade (Solanum nigrum L.), toadflax (Linaria sp.) were found. Other mealybug species: Chorizococcus rostellum (Lobdell), Peliococcus turanicus (Kiritshenko), Phenacoccus solani (Ferris), Phenacoccus solenopsis (Tinsley)