Jornal Europeu de Biologia Experimental Acesso livre

Abstrato

Codling moth damage assessment in apple fruit and its management using insecticide bioassays

Muhammad Shahnawaz, Mukhtar Ahmed, Muhammad Arshad, Maqsood Hussain and Sadat Sher Khan

Codling moth Cydia pomonella (Lepidoptera: Tortricidae) damage assessment and evaluation of its insecticidal control is important to reduce loss of fruit to sustain primary source of income of apple farmers. The study is the combination of field survey and laboratory experiments. The survey was carried out to quantify the percent apple fruit damage by the codling moth in seven different orchards at four different dates. The experiments were conducted on different concentrations of active ingredients of seven insecticides i.e. Lamda Cylhal (0.40 & 0.80 mL), Cypermethrin (0.25 & 0.50 mL), Cosset 40 (0.25, 0.50 & 0.75 mL), Talstar (0.06 & 0.12 mL), Advantage (0.09 & 0.18 mL), Ematac (0.40 & 0.80 mL), and Novastar (0.25 & 0.50 mL) to evaluate the most effective chemicals as control measure for the insect. It has been observed that the insect infestation on the fruit significantly varied among the sampling dates and among the orchards. The insecticides tested significantly increased (p ≤ 0.05) the mortality of the insect compared to the control. Application of Talstar, Ematac and Novastar at concentrations of 0.12, 0.80 and 0.50 mL per 250 mL H2O, respectively, provided the 100% mortality of the insect. However, maximum 90% mortality was observed through the use of Lamda Cylhal, Cypermethrin, Cosset 40, Advantage, and Novastar at concentrations of 0.32, 0.20, 0.20, 0.072, and 0.1%, respectively.