مقاله 2012: بررسی اثر سموم مختلف روی مگس فوریده
Efficacy of different insecticides against mushroom phorid Fly, Megaselia halterata (Wood) in Punjab, Pakistan
Abstract
Phorid fly, Megaselia halterata is the most destructive insect pest of mushroom causing serious threat to mushroom production and cultivation in Pakistan. Chemical control is the most effective and quicker approach used by our farming community. So there was a dire need to evaluate some commercial insecticides against this pest. The present study was therefore, conducted to evaluate six commercial insecticides (deltamethrin, spinosad, spintoram, trichlorphon, malathion and permethrin) against phorid fly for three consecutive years (2008 to 2010). The insecticides evaluation was done on the bases of three parameters viz. percent reduction in adult emergence, mushroom damage rate by phorid fly larvae and mushroom yield per unit area. All insecticides caused significant reductions in adult emergence and mushroom damage rates as compared to control. On overall bases, the average of three years data revealed that maximum reduction of adult emergence and minimum damage rate by phorid flies as well as maximum yield per plot was observed in spinosad treated plots, followed by trichlorphon and deltamethrin which were statistically at par. The results of present study showed that deltamethrin, spinosad and trichlorphon may be employed in the field for controlling mushroom phorid fly in Pakistan.
:: برچسبها:
مقاله 2012,
بررسی اثر سموم مختلف روی مگس فوریده
بیولوژی و مرفولوژی Megaselia halterata, یکی ازمهمترین آفت قارچ های کلاهک دار
Biology and morphometry of Megaselia halterata
an important insect pest of mushrooms
Abstract
This paper aims to provide insights into knowledge on morphology, biology and development of Megaselia halterata (Wood), one of the most common insect pests of mushroom houses. We focus on such traits as body length and weight and width of pseudocephalon, and show how these traits differ in subsequent development stages as well as across time. The development time of a generation, from egg to adult, lasted 16-19 days at 24 °C; for larval stage this time lasted 12-14 days. Mean weight of particular stages ranged from 0.003 mg for eggs up to 0.492 mg for pupae, while mean length from 0.35 mm for eggs to 2.73 mm for 3rd instar larvae. During larval development, mean body weight increased about 48 times and mean body length three times. Measurements of pseudocephalon of larvae showed that between the successive instars it increased approximately 1.4 times. Using the statistical technique inverse prediction, we develop formulae for estimation of larvae development time based on mean body weight and length of larvae found in a sample taken from a mushroom house, on which basis one can decide whether the infection occurred in the mushroom house or during compost production.
:: برچسبها:
lمقاله 2012,
بیولوژی و مرفولوژی Megaselia halterata,
مهمترین آفت قارچ های کلاهک دار
