TY - JOUR AU - Mahdi, SHA AU - Hasan, M AU - Mahfuz, I AU - Khalequzzaman, M PY - 2018/07/17 Y2 - 2024/03/29 TI - Use of different non-chemical methods for the management of adult Callosobruchus maculatus (F.) (Coleoptera: Bruchidae) in stored chickpea JF - Journal of Bio-Science JA - J bio-sci. VL - 23 IS - 0 SE - Articles DO - 10.3329/jbs.v23i0.37468 UR - https://www.banglajol.info/index.php/JBS/article/view/37468 SP - 57-65 AB - <p>The efficiency of physical factors (dry heat, low temperature and UV-radiation), leaf powders of Neem (<em>Azadirachta indica </em>A. Juss.), Bichuti (<em>Flacourtia </em>indica Merr.) and Parthenium weed (<em>Parthenium hysterophorus </em>L.) and two insecticides (Salvo and Amithrin plus) was evaluated against Callosobruchus maculatus (F.). For dry heat treatment, the calculated LD<sub>50</sub> values for C. maculatus were 56.92, 54.26, 52.27, 50.76, 49.09, 50.55 and 29.59°C after 50, 60, 70, and 80 minutes, 24, 36, 48 h of treatment respectively, and the LD<sub>50</sub> values were 58.61 and 5.18°C at 1 and 2 h for low temperature treatment respectively. LT<sub>50</sub> values of the treatment of UV-radiation were 48.63, 29.89, 17.54, 11.11, 5.93 and 1.35 °C for the exposure period of 24, 36, 48, 60, 72 and 48 h respectively. The calculated LD50 values of leaf powder were 3.38, 3.15, 2.88, 2.45 and 2.40 mg cm<sup>-2</sup> for A. indica, 3.91, 3.80, 3.55, 3.30, and 3.08 for F. indica, 12.11, 4.35, 1.86, 1.49, and 1.36 for P. hysterophorus after 12, 24, 36, 48 and 60 h of treatment respectively. The calculated LD<sub>50</sub> values were 0.64, 0.33, 0.23, 0.04 and 0.008 mg cm<sup>-2</sup> for Salvo and 0.35, 0.23, 0.09, 0.08 and 0.01 mg cm<sup>-2</sup> for Amithrin plus at 12, 24, 36, 48 and 60 h respectively. The order of effectiveness of physical factors was dry heat &gt;low temperature &gt;UV-radiation. On the other hand, the order of toxicity of plant powders was F. indica &gt;A. indica &gt;P. hysterophorus. In case of insecticides it was Amithrin plus &gt;Salvo. The findings suggest that physical factors and plant leaf powders can be used in integration with other bio rational approaches.</p><p>J. bio-sci. 23: 57-65, 2015</p> ER -