Impacts and evaluation of Hormoligosis of some insect growth regulators on Phenacoccus solenopsis (Hemiptera: Pseudococc
- PDF / 412,427 Bytes
- 13 Pages / 595.276 x 790.866 pts Page_size
- 2 Downloads / 150 Views
ORIGINAL RESEARCH ARTICLE
Impacts and evaluation of Hormoligosis of some insect growth regulators on Phenacoccus solenopsis (Hemiptera: Pseudococcidae) Muhammad Idrees 1 & Muhammad Dildar Gogi 1 & Waqar Majeed 1 & Arbab Yaseen 1 & Mubashar Iqbal 1 Received: 11 December 2019 / Accepted: 25 March 2020 # African Association of Insect Scientists 2020
Abstract Insects when exposed to sublethal applications of pesticides exhibit hormoligosis in their various biological activities. The present research was conducted to evaluate the hormoligosis impacts of IGR’s pesticides including pyriproxyfen (Priority 10.8 EC) and lufenuron (Ardent 5 EC) on cotton mealybug in laboratory conditions at IPM Laboratory, Department of Entomology University of Agriculture. The results revealed that concentration-dependent mortality in cotton mealybug of 1st instars and adults was observed that decrease after generations at sub-lethal dilutions of Priority ® and Ardent ® pesticide which retained development of resistance from G1 to G2. Maximum hormoligosis revealed at 3 days post treatments interval (PAI) Priority ® in fecundity at LC10 (0.07%) in G5 (63.17 crawlers/female) and at 7 days Priority ® in G5 (68.13 crawlers/female). At 7 days lufenuron of sub-lethal concentration of LC10 (0.01%) in G5 (73.18). At 3rd and 7th days post treatments interval Priority® and Ardent® demonstrated maximum hormoligosis in longevity at LC10 (0.07%) in G5 (57.29, 57.14 days), (54.07, 58.10 days) respectively, and hormoligosis of sex ratio was not determined against Priority® and Ardent®. We conclude that hormoligosis development is fast at sub-lethal dilutions of Ardent and Priority® at LC10, LC20 and LC30 with respect to mortality, fecundity, and longevity. While hormoligosis development was fast at sub-lethal dilutions of priority® and ardent® at LC30, LC40 and LC50 with respect to the mortality of adult female. In Pakistan, pesticide resistance in cotton mealybug can be achieved if the effective and different pesticides are used along with other Integrated Pest Management techniques in rotation and at the early stage of resistance improvement. Keywords Insect pest . Cotton . Mealybug . Hormoligosis
Introduction In Pakistan, agriculture is yet the single business which donates 21% GDP and utilizes 44% of the workforce (Govt. of Pakistan 2008). Cotton is significant being a non-nourishment money crop has a huge wellspring of outside professional yield. It is consumed in the textile industry and ranked 2nd among oilseed crops in the world (Khan et al. 2002). Gossypium hirsutum characterizes approximately comprised 7.5% in horticulture and 1.6% to domestic power. Its valueadded share in agriculture is 7.0% and contributes 1.5% to GDP (Govt. of Pakistan 2013).
* Waqar Majeed [email protected] 1
University of Agriculture, Faisalabad, Pakistan
Phenacoccus solenopsis (Hemiptera: Pseudococcidae) (cotton mealybug) is proved to be a common cotton crop pest and found all over the world (Rezk et al. 2019; Mansour et al. 2017), in the year of 2005 it was
Data Loading...
