Efficacy of some selected chemical insecticides and bio-pesticides against tomato fruit worm, (Helicoverpa armigera)under the agro climatic condition of Gilgit Baltistan, Pakistan
Syed Arif Hussain Rizvi, Saleem Jaffar
A Field Studies were carried out for the control of Tomato fruit borer (Helicoverpa armigera) during July 2014 at District Skardu Baltistan Pakistan. Variety of tomato grown was Shalkot when fruit setting starts in Skardu region we applied chemical insecticide and bio-pesticide at their recommended doses. The aim of investigation is to promote use of environment friendly bio-pesticides. Data were taken as number of fruit borer larvae plant-1 of tomato. Data was recorded at weekly interval. The data after first week of application of pesticides and bio-pesticides revealed that lowest number (0.93) of H. armigera larvae plant-1 recorded in the plot treated with Volium Flexy 300 EC fallowed by Delegate 25 EC where (1.19) numbers of H. armigera larvae plant-1 while on the other hand Bio-pesticides also shown control of fruit borer at some extant which was recorded as 1.24 and 1.26 numbers of H. armigera larvae plant-1 by Sea-buckthorns and Populus extracts while in the check plot highest number(1.56) of fruit borer larvae plant-1 was recorded. Overall performance of synthetic insecticides and bio-pesticides against Tomato fruit borer H. armigera the data showed that Volium Flexy 300 EC lowest (0.64) numbers of H. armigera larvae plant-1 fallowed by Delegate 25 EC, Sea-buckthorns and Populus Extracts (0.98, 1.02, 1.03) while highest number of (1.38) H. armigera larvae plant-1 was recorded from the check plot. From the results of present investigation we concluded that although percent mortalities showed by Populus and Sea-buckthorns plant extracts was low as compared to the synthetic insecticides but theses bio-pesticides were helpful to some extant for control of tomato fruit borer because of organic in nature the bio-pesticides have less environmental hazards while the synthetic insecticides have lots of ill effects on environment.
Syed Arif Hussain Rizvi, Saleem Jaffar. Efficacy of some selected chemical insecticides and bio-pesticides against tomato fruit worm, (Helicoverpa armigera)under the agro climatic condition of Gilgit Baltistan, Pakistan. J Entomol Zool Stud 2015;3(4):50-52.