Gopal Das

Bangladesh Agricultural University | BAU · Department of Entomology

In this laboratory study, insecticidal and inhibitory potential of two chitin synthesis inhibitors (CSIs) viz. Buprofezin and Lufenuron were evaluated against okra shoot and fruit borer (OSFB). CSIs were applied on three days old larvae through different bioassay methods like topical or direct, okra-dip or indirect and combined (topical + leaf-dip)...

In the present study, experiments were conducted in the laboratory to evaluate the potentiality of some promising insect growth regulators (IGRs) viz. Buprofezin (Award 40 SC), Lufenuron (Heron 5 EC) and Pyriproxyfen (Pyrifen 10.8 EC) on the weight reduction of bean aphid, Aphis craccivora (Koch). Each of the IGRs was tested in three different conc...

Tetranychus truncatus Ehara (Acari: Tetranychidae) is one of the serious pests that infests different agricultural crops in field and greenhouse crops, and its distribution is limited to mostly Asian countries. The experiments were conducted to know the effectiveness of different concentrations of bifenazate against the T. truncatus, and to evaluat...

An experiment was conducted at Entomology field laboratory, Bangladesh Agricultural University, Mymensingh during the rabi season of 2019-2020 to investigate the incidence of aphid and whitefly on chilli and effect of some biorational and new generation insecticides for controlling those insects. The presence of aphids was first identified on 2nd w...

Chitin synthesis inhibitors (CSIs) are potential inhibitory chemical compound that disrupt molting process by interfering chitin synthesis and kill insects before attaining maturity. In this study, some chitin synthesis inhibitors (CSIs) viz. Tacoma 40SC (Buprofezin), Heron 5EC (Lufenuron), Pyrifen 10.8EC (Pyriproxifen) and Chitosan 75WP were teste...

Chitosan is a chitin-derived bio-molecule. Its insecticidal possibility was evaluated at concentrations of 1.0, 2.0, and 3.0 g/L against the common cutworm or armyworm, Spodoptera litura (Fab.) larvae under laboratory conditions in Bangladesh during the period from July 2016 to June 2017. The 2nd instars larvae were treated with selected concentrat...

An experiment was conducted at Entomology field laboratory, Bangladesh Agricultural University, Mymensingh during the rabi season of 2018-19 to investigate the abundances and population dynamics of major insect pests of soybean in soybean ecosystem. In this present study, a total of twelve insect pests and five beneficial arthropods were identified...

Tomato fruit borer, Helicoverpa armigera (Hubner) (Lepidoptera:Noctuidae) is a polyphagous insect pest and is considered as the most important limiting factor in successful cultivation of tomato in Bangladesh. This internal feeder causes severe yield losses by boring in tomato fruits and the damaged fruits eventually rot or ripen prematurely. Field...

Emamectin Benzoate, Spinosad and Abamectin are soil bacterial fermented biopesticides used for controlling various groups of insects viz. sucking, chewing, borer etc. In the present study, three bacterial fermented biopesticides viz. Suspend 5SG @ 1.0 & 1.5 g/L, Libsen 45 SC @ 0.25 & 0.50 ml/L and Ambush 1.8EC @ 2.0 & 3.0 ml/L were evaluated agains...

n the present study, effectiveness of chitin synthesis inhibitor (Heron 5 EC), juvenile hormone analogue (Pyrifen 10.8 EC) and some new generation acaricides (Oberon 240 SC, Mite Scavenger 10 EC and Omite 57 EC) were evaluated against red spider mite, Tetranychus urticae(Koch.) under laboratory condition. All the selected molecules had two concentr...

Plant nutrition has a substantial role on the susceptibility of plants to sucking insect pests. Hemipteran insects are very much sensitive to plant nutritional profiles. Higher than recommended level of P and K-based fertilizers would be the potential alternate of conventional insecticides for managing sucking insects in field condition. Therefore,...

In the present study, effect of some reduced risk insecticides were evaluated against sucking insect complex on okra. The selected reduced risk insecticides were Biotrin 0.5% (Matrine 0.5%), Capture 75 WDG (Imidacloprid + Emamectin Benzoate), Kotan 50 WG (Pymetrozine), Ravjum 14.5 SC (Indoxacarb) and Sniper 10 SC (Fenopropathrin + Fenvalerate). A t...

Field toxicity two insect growth regulators (IGR) viz. Award 40 SC (Buprofezin) and Haron 5 EC (Lufenuron) and one newer Thiacloprid viz. Calypso 280 SC against wolf spider, Lycosa pseudoannulata and carabid beetle, Ophionea indica, the predators of rice brown planthopper (BPH) was examined in the Entomology field laboratory, Bangladesh Agricultura...

In the present study, some new generation insecticides were evaluated against rice leaf folder (RFL) infestation and their toxic effects were also observed on some natural enemies in the rice ecosystem. Data were collected on percent hill infestation, percent leaf infestation, number of moths/sweep, grain yield (t/ha) and abundances of natural enem...

Experiments were conducted at the net house and laboratory of the Entomology Division of Bangladesh Institute of Nuclear Agriculture (BINA) to determine the effectiveness of four light sources for light trapping, and performance of three predators for controlling brown plant hopper, Nilaparvata lugens (Stal.).The light intensity and sources were 30...

The papaya mealybug, Paracoccus marginatus (Hemiptera: Pseudococcidae) is a serious insect pest causing severe damage to papaya plants. Effectiveness of two insect growth regulators viz. Tacoma 40 SC (Buprofezin) and Heron 5 EC (Lufenuron), two bacterial fermented insecticides viz. Libsen 45 SC (Spinosad) and Suspend 5 SG (Emamectin benzoate) and o...

The papaya mealybug, Paracoccus marginatus (Hemiptera: Pseudococcidae) is a serious insect pest causing severe damage to papaya plants. Effectiveness of two insect growth regulators viz. Tacoma 40 SC (Buprofezin) and Heron 5 EC (Lufenuron), two bacterial fermented insecticides viz. Libsen 45 SC (Spinosad) and Suspend 5 SG (Emamectin benzoate) and o...

Effectiveness of buprofezin (Award 40 SC) was evaluated against 2nd instar larvae of Spodoptera litura (F.) under laboratory conditions to analyse the growth and development at three concentrations viz., 200, 400, and 600 ppm with three application methods (direct or topical, indirect or leaf-dip and combined). Observations were made at 3 and 7 day...

The experiments were conducted to know the efficacy of Buprofezin (Award 40 SC), an insect growth regulator against 2nd instar larvae of Spodoptera litura (Fabricius) under laboratory conditions (insect rearing was done at room temperature and relative humidity that is 260C-300C and 65-80% relative humidity) at three different concentrations viz. 2...

Brinjal is susceptible to attack of various insect pests from seedling to fruiting stage. Among these, brinjal shoot and fruit borer, Leucinodes orbonalis (Guen.) is the most destructive pest and is considered to be the limiting factor in quantitative as well asqualitative harvest of brinjal fruits. In the present study, efficacy of some new insect...

Field performance of two insect growth regulators (IGR) viz. Award 40 SC (Buprofezin) and Haron 5 EC (Lufenuron) and one newer Thiacloprid viz. Calypso 280 SC against Nilaparvata lugens (Stål) was observed in the Entomology field laboratory, Bangladesh Agricultural University, Mymensingh. The treatments were evaluated on reduction of BPH population...

In the present study, experiments were conducted in the laboratory of Department of Entomology, Bangladesh Agricultural University, Mymensingh-2202 to evaluate the potentiality of some promising insect growth regulators (IGRs) viz. Buprofezin (Award 40 SC), Lufenuron (Heron 5 EC) and Pyriproxyfen (Pyrifen 10.8 EC) on the mortality of bean aphid, Ap...

Susceptibility of three predatory arthropods namely Asian lady beetle, Harmonia axyridis (Pallas), lynx spider, Lycosa pseudoannulata (Boescriberg and Strand), and wolf spider, Oxyopes javanus (Thorell) to four commonly used biorational molecules viz. buprofezin, spinosad, emamectin benzoate and abamectin were determined in a brinjal ecosystem. Bio...

Buprofezin (Award 40 SC) was evaluated at the concentrations of 200, 400 and 600 ppm on the mortality of Spodoptera litura (Fab.) larvae under laboratory conditions in Bangladesh from July 2015 to June 2016. The 2nd instar larvae were treated with selected concentrations through three different application methods viz. direct or topical, indirect o...

A laboratory experiment was conducted to evaluate different application methods and three different concentrations of Buprofezin 200, 400 and 600 ppm against Spodoptera litura at Department of Entomology, Bangladesh Agricultural University. Treatments were applied on 2 nd instar larvae as topical or direct, leaf-dip or indirect and combined applica...

CITATIONS 5 READS 524 2 authors, including: Some of the authors of this publication are also working on these related projects: glucocorticoid deficiency of View project Abstract Buprofezin (Award 40 SC) was evaluated at the concentrations of 200, 400 and 600 ppm on the mortality of Spodoptera litura (Fab.) larvae under laboratory conditions in Ban...

Buprofezin (Award 40 SC), a chitin synthesis inhibitor (CSI) has been evaluated on the mortality of brown planthopper in the laboratory condition of Department of Entomology, Bangladesh Agricultural University, during the period from April to August, 2014. The mortality was observed using three concentrations viz. 100, 200 and 300 ppm with differen...

In the present study, efficacy of three bacterial fermented biopestcides viz., spinosad, emamectin bennzoate and abamectin and one insect growth regulator, buprofezin were evaluated against the infestation of brinjal shoot and fruit borer (BSFB), Leucinodes orbonalis (Guen) during January to July 2015. Biopesticides were applied either individually...

The efficacy of two bacterial fermented bio-pesticides (abamectin and emamectin benzoate), one insect growth regulator (lufenuron) and one newer pyrethroid (lambda-cyhalothrin) against the cucurbit fruit fly, Bactrocera cucurbitae (Coquillett) on bitter gourd was evaluated by field experiments. Two concentrations of the selected bio-pesticides were...

Effectiveness of Heron 5 EC (Lufenuron) was evaluated against 3 rd instar larvae of Spodoptera litura (Fab.) under laboratory conditions for time-oriented mortality with three different concentrations through different treatment methods. The larvae were treated with three different concentrations like 25, 50 and 75 ppm of lufenuron through three di...

In this study, abamectin, emamectin benzoate, lufenuron and lambda-cyhalothrin were evaluated against the Bactrocera cucurbitae. Abamectin was applied alone and in combination with the others. A total of two sprays were given and data on percent fruit infestation, number of marketable fruit/m 2 , infested and marketable fruit yield (t/ha) were coll...

In the present laboratory study, different concentrations of award 40 SC (Buprofezin) have been applied (topical, potato-dip and topical + potato-dip method) on the 2nd instars larvae of brinjal shoot and fruit borer (Leucinodes orbonalis Guen.) and then mortality, weight reduction or cuticular change was observed at 3 HAT (hours after treatment),...

Field experiments were conducted in winter season with brinjal to evaluate the efficacy of some new generation insecticides against two important sucking insects, Amrasca devastans (jassid or leafhopper) and Bemicia tabaci (white fly). Four newer insecticides (fipronil, imidacloprid, buprofezin and thiamethoxam + emamectin benzoate) have been selec...

Brinjal shoot and fruit borer (BSFB) (Leucinodes orbonalis Guen.) is the most destructive and economically harmful insect pests of brinjal. In Bangladesh, brinjal growers are solely rely on various groups of neurotoxic insecticides to control BSFB effectively. Brinjal being a vegetable crop, multiple uses of these insecticides against BSFB will lea...

Brinjal shoot and fruit borer (BSFB), Leucinodes orbonalis Guenee, is a serious pest of brinjal or eggplant (Solanum melongena L.). Due to increasing levels of resistance of L. orbonalis to different insecticides there is an urgent need to test new chemicals. Studies were carried out in the Entomology Field Laboratory, Bangladesh Agricultural Unive...

The Fos- and Jun family proteins are immediate-early gene products, and the Fos/Jun heterodimer, activator protein-1 (AP-1), may be involved in the regulation of corticotropin-releasing factor (CRF) gene expression. FosB is a member of the Fos family proteins that is expressed in the paraventricular nucleus of the hypothalamus upon stress exposure,...

The noradrenergic (NA) neurons in the locus ceruleus (LC) were ablated with a high degree of selectivity by immunotoxin-mediated neuronal targeting. Transgenic mice were used in which the human interleukin-2 receptor-α subunit (hIL-2Rα; Tac) is expressed under the promoter of dopamine β-hydroxylase. The recombinant immunotoxin, which is composed of...

Evidence from pharmacological studies has implicated substance P (SP), a natural ligand of tachykinin NK(1) receptors which can also interact with NK(2) receptors, in the generation of pressor and tachycardic responses to stress. Using selective blockade of brain NK(1) and NK(2) receptors, we tested in conscious rats the hypothesis that SP initiate...

The prolactin-releasing peptide (PrRP) has been proposed to be a co-transmitter or modulator of noradrenaline (NA) because it colocalises with NA in the A1 (in the ventrolateral reticular formation) and A2 (in the nucleus of the solitary tract; NTS) cell groups in the caudal medulla. The baroreceptor signals, originating from the great vessels, are...

FosB is a member of the Fos family transcription factors. To determine whether FosB expression is regulated by glucocorticoids (GCs) in the hypothalamus, rats underwent sham adrenalectomy (sham-ADX) or bilateral ADX, and FosB/DeltaFosB (DeltaFosB, a truncated splice variant of FosB)-immunoreactivity (ir) was determined in the paraventricular nucleu...

The effectiveness of different concentrations of rison 60 EC (0.12, 0.20, 0.24%), decis 2.5 EC (0.0125, 0.025, 0.05%) and sunsulfan 20 EC (0.08, 0.10 and 0.15%) were tested on the mortality (%) of different larval instars and adult of Epilachna dodecastigma Muls. under the laboratory conditions. Thirty days old ribbed gourd, Luffa acutangula (L.) p...

The effect of different levels of urea was investigated on the extent of damage of rice caseworm, Nymphula depunctalis (Gn.). Data were collected on infested hill, tiller, leaf, number of cases/m² and position of case in leaf at different ages of the plant viz. 20, 27, 34, 41 and 48 days after transplanting (DAT). Grain yield (t ha-<sup>...