Vol. 3, Issue 5 (2018)
Evaluation of insecticides against insect-pests on Chillies, Capsicum annum L. and their management
Author(s): Kamil Kabir Khanzada, Bina Khanzada, Riaz Hussain Chandio, Farman Ali Sipio, Muhammad Irfan Jat
Abstract: The experiment was started April 10, 2018 at the experimental field of Nasarpur in winter season. The observation were recorded 24 hours before spraying, while the post treatment observations were recorded at 3, 7 and 14 days after each spraying. Significantly higher population among all treatments was observed in Dimethoate 30EC, 2.31 respectively. Thrips population ranged between 0.72 and 1.79 among different treatments and lowest population 0.72 was observed in the treatment of Imidacloprid 17.8 SL @ 0.090 l/ha, that was at par with the population under treatment of T2, T7 T8 and T4 0.80, 0.92, 0.92, 1.04 and 1.06 respectively. Moreover, lowest population (0.20) was observed in the treatment of Imidacloprid @ 0.058 l/ha, that was at par with the population under untreated control, Dimethoate @ 0.058 l/ha and Dimethoate @ 0.875 l/ha, (0.30, 0.34 and 0.34, respectively). The infestation of thrips also started from second week of April at 7 days after transplanting with the population of 1.04 in 6 leaves, and it continued till the end of the crop season. Highest population was observed in second week of May with 3, 6 leaves at 126 days after transplanting. The pest remained active till the maturity of the crop. Thrips population show significant positive correlation with maximum temperature.