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@article{Muley1 and R.K. Nimbalkar2*_2011, title={Efficacy of Helicoverpa armigera Larvae on Conventional and Genetically Modified (Bollgard®) Cotton plants from Marathwada Region (MS) India}, volume={3}, url={https://www.updatepublishing.com/journal/index.php/jebt/article/view/109}, abstractNote={<p class="MsoNormal" style="margin: 6pt 0in 0pt; text-align: justify;"><span style="font-size: 10pt; font-family: ";Arial Narrow";,";sans-serif";; mso-bidi-font-family: Arial; mso-ansi-language: EN-AU;" lang="EN-AU">Present study was conducted to evaluate cotton bollworm larval behaviour on Bollgard® cotton plants compared to conventional plants (Non-Bollgard®) and to determine their preferred feeding sites. Data from these studies conducted during pre-flowering and flowering stages are presented. The movement of </span><em><span style="font-size: 10pt; font-family: ";Arial Narrow";,";sans-serif";; mso-ansi-language: EN-AU;" lang="EN-AU">Helicoverpa armigera</span></em><span style="font-size: 10pt; font-family: ";Arial Narrow";,";sans-serif";; mso-bidi-font-family: Arial; mso-ansi-language: EN-AU;" lang="EN-AU"> was different on Bollgard® cotton plants compared to conventional cotton plants at all rating intervals. Cotton plant type (<em>F</em>=25.47; <em>df</em>=1,10; <em>P</em><0.01) and time of evaluation (<em>F</em>=54.15; <em>df</em>=3,30; <em>P</em><0.01). In pre-flowering cotton plants, bollworm larvae moved significantly more on individual flowering Bollgard® plants compared to conventional plants. Cotton plant type (<em>F</em>=41.70; <em>df</em>=1,10; <em>P</em><0.01), time of evaluation (<em>F</em>=6.79; <em>df</em>=3,30; <em>P</em><0.01), and the cotton plant type by time of evaluation interaction (<em>F</em>=3.63; <em>df</em>=3,30; <em>P</em>=0.02) was significant for percentages of larvae recovered from sticky traps. The study reports that current scouting protocols and action levels to initiate insecticide treatments for bollworms on non-Bollgard cotton plant are not appropriate for Bollgard® cotton plant.<span style="mso-spacerun: yes;">  </span>Scouts should look at white flowers and small bolls in addition to terminals and squares when scouting Bollgard® cotton plant because bollworm larvae migrate to those structures in a relatively short time.</span></p>}, number={3}, journal={Journal of Ecobiotechnology}, author={Muley1 and R.K. Nimbalkar2*, S.S. Shinde1, V.N. Kamtikar1, Sumit}, year={2011}, month={May} }