Naveen Aggarwal

Punjab Agricultural University | PAU · Department of Entomology

The growth and development of (J.E. Smith) was studied on maize hybrid PMH 10 under laboratory Spodoptera frugiperda conditions at five alternating temperature viz., 18:07, 24:12, 28:17, 32:22 and 36:27°C during 2021-22. The duration of different developmental stages viz., incubation, larva, pupa, and adults reduced significantly with increase in t...

Host preference and development biology of Bemisia tabaci (Gennadius) on brinjal, soybean, cucumber, cotton, tomato and Solanum nigrum L. was studied during 2020-21 at PAU, Ludhiana. Under free choice test conditions, cucumber was the most preferred host which attracted maximum number of adults followed by soybean. The other host plants in decreasi...

Temperature is an only critical factor which influences insect population dynamics, development and reproduction. Nilaparvata lugens (Stål) is one of the major insect pests of paddy crop in East and Southeast Asia, which significantly reduces the quality and quantity of yield. The effect of five set of variable temperature combinations of 23:9, 27:...

Bemisia tabaci is a serious agricultural pest and vector of many economically important plant viruses worldwide. We studied the role of alternate host plants in carry-over of B. tabaci to cotton crop in Punjab province of India. One hundred thirteen plants in twenty nine families harboured the whitefly, but plants in Asteraceae, Cucurbitaceae, Faba...

Background: Syrphids are well known generalized predators of aphids having remarkable predation potential and proved as effective aphid controlling natural enemies at larval stage. The adult predatory syrphid flies are strong fliers and have ability to travel a long distance to find suitable oviposition site. They select the ovipositioning site as...

Nilaparvata lugens (Stål) (Hemiptera: Delphacidae) is one of the major insect pests of paddy crop which significantly reduces the quality and quantity of yield. The biology and life table parameters of this pest were studied at five set of controlled temperature combinations as 23:9, 27:12, 33:19, 36:23 and 39:27°C with 75 ± 5 per cent humidity and...

Food intake and utilization is a critical factor for growth, development and reproduction of an insect. Nutritionists developed the concept of food consumption and utilization in order to relate the quality of food with growth and development of animals. These indices lead to understanding of the effect of biotic and abiotic factors on insect life...

Brinjal shoot and fruit borer (BSFB) Leucinodes orbonalis Guenee is a key pest of brinjal and a major constraint to its production in the Indian subcontinent. The influence of constant as well as alternating temperatures on the development and survival of the pest is not known. Also, no information is available on the thermal constant, development...

Two-year field studies during Kharif 2015 and 2016 were conducted to assess the abundance and diversity of arthropod communities of Bt cotton carrying Cry1Ac and Cry2Ab proteins and non-Bt cotton under sprayed and unsprayed conditions. The experiment was conducted in a randomized block design with four treatments of BG-II and non-Bt cotton. The tre...

Pink Stem Borer, Sesamia inferens Walker (Lepidoptera: Noctuidae) incidence has increased on graminaceous crops in the north-western plains of India during recent years. To understand the effect of climate change on the northward spread of the pest, studies on the growth and development of S. inferens on maize (Zea mays L.) were planned with combin...

Biointensive integrated pest management (BIPM), insecticidal management, state recommended practices and farmers’ practices were evaluated for their efficacy against brinjal shoot and fruit borer (BSFB) during 2016 and 2017. BIPM module recorded the lowest (8.4%) shoot damage while a maximum of 12.1% was observed with insecticidal management. Fruit...

The biology of Sesamia inferens (Walker) was studied at 25±1 °C and 70±5 per cent relative humidity on PMH 1 maize hybrid. The incubation period was 6.82±0.05 days. There were six larval instars and the larval development was completed in 29.95±0.16 days. The duration of instars I-VI was 4.17±0.09, 3.60±0.08, 4.47±0.02, 4.40±0.03, 6.18±0.06 and 7.1...

The biology of pink stem borer, Sesamia inferens was observed at different constant temperatures on maize (Zee mays L) and modeled their developmental rate as a function of temperature using linear regression model. Temperature has significant influence on the duration of each developmental stage. The embryonic development was completed at 63.69 de...

Diseases and insect pests are the major hurdle in enhancing the production of agricultural crops. The frequent use of synthetic pesticides has led to the development of pesticide-resistant pathogens and insect pests, environmental pollution, negative effects on natural enemies, human health hazards, and pollution of underground water, thereby causi...

Natural parasitism of rice yellow stemborer, Scirpophaga incertulas (Walker) and leaf-folder, Cnaphalocrocis medinalis (Guenée) in organically as well as conventionally grown basmati rice (Pusa Basmati 1121) was recorded at farmers’ field during 2012. Different stages of stemborer and leaffolder were collected and observed under laboratory conditio...

Field experiments were conducted at farmers' rice felds in Punjab, India during 2009 to 2011 to validate large scale bio-intensive pest management (BIPM) practices in comparison to conventional chemical-based strategies in aromatic rice. The results showed that conventional chemical-based farmers' practices resulted in lower incidence of leaf folde...

The dispersal/host searching capacity of Trichogramma chiionis Ishii and Trichogramma japonicum Ashmead was studied in organic Basmati rice during 2012 and 2013. Results showed that the level of parasitism was negatively correlated with the distance between host eggs and parasitoids' release point. Parasitisation rate was more (11.39-18.10% and 9.7...

The feeding potential of different developmental stages of Cheilomenes sexmaculata (Fabricius) (Coleoptera: Coccinellidae) and Chrysoperla zastrowi sillemi (Esben-Petersen) (Neuroptera: Chrysopidae) against different nymphal instars and adult female mealy bugs, Phenacoccus solenopsis Tinsley (Sternorrhyncha: Coccoidea: Pseudococcidae) indicated tha...

Efficacy of seed treatment with Gaucho (imidacloprid) 600 FS @ 6 ml kg -1 seed at 7,14,21 and 28 days before sowing (DBS) was compared with recommended one DBS seed treatment and untreated control for the management of shoot fly, Atherigona naqvii Steyskal on spring sown maize at Ludhiana during 2010,2011 & 2012. The pre-treatment of seed with imid...

Thyroid hormone production, metabolism, and action change with aging. The reference ranges for serum thyrotropin and thyroid hormones are derived mainly from younger populations. Thus, the prevalence of subclinical thyroid dysfunction is increased greatly in the elderly. However, it is unclear whether mild thyroid dysfunction in the elderly is asso...

The toxicity of insect growth regulators and neonicotinoid-based insecticides recommended for the management of cotton mealy bug, Phenacoccus solenopsis Tinsley were compared and tested for their toxicity against different developmental stages of predatory coccinellid Cheilomenes sexmaculata (Fabricius). Buprofezin recorded significantly higher (76...

Studies were conducted to evaluate the efficacy of imidacloprid 70 WG (Admire), a new insecticide spray formulation along with imidacloprid 200 SL (Confidor), Rogor 30 EC (Dimethoate), endosulfan 35 SC (Thiodan), acetamiprid 20 SP (Pride), thiamethoxam 25WG (Actara) and Commercial neem formulation (Rakshak 1500 ppm), to combat sucking pests complex...

A total of nine treatments of spirotetramat and imidacloprid in mixtures and alone at different doses including two checks, thiodicarb (Larvin 75WP) and profenofos (Curacron 50EC) were compared to test their effectiveness against mealy bug infestation on RCH 134 Bt cotton in 2007 at farmer's field. A total of two sprays were done and the per cent m...

The studies were conducted at the Oilseed Research Farm, PAU, Ludhiana for three years and for one year at Regional Research Station, Bathinda. The new insecticide Thiamethoxam (Actara 25 WG) with four dosages was compared with already recommended insecticides viz. dimethoate (Rogor 30 EC) and oxydemeton methyl (Metasystox 25 EC). Aphid population...

The contact and feeding toxicity of NeemAzal T/S (EID Parry, Chennai, India) to the parasitoid Encarsia sophia (Girault & Dodd) was compared with three synthetic insecticides (chlorpyriphos, endosulfan and triazophos) against immatures and adult emergence. NeemAzal T/S (1.0%) at lower dose (200mg/l) did not cause any effect on the emergence of E. s...

The system Vicia faba–Aphis fabae fabae was studied under the influence of Ocimum basilicum (basil) and Satureja hortensis, in a wind tunnel, in the greenhouse and in field experiments. In the wind tunnel at 20°C both Lamiaceae were deterrent for A. fabae, and S. hortensis proved to be more deterrent than O. basilicum. In experiments in the greenho...

An insecticide resistance management (IRM) strategy was devised and evaluated for the management of cotton bollworm, Helicoverpa armigera (Lep., Noctuidae) in cotton in on-farm research in Punjab state, India, in 2003-2004. The adoption of the IRM programme, based mainly on economic thresholds and on the use of selectively acting insecticides, resu...

Two botanical pesticides, Neem Azal-T/S (NA) and Quassia amara, one biopesticide, Bacillus thuringiensis subsp. aizawai (Bta) and one combination of Bta + NA were tested against 2nd and 4th instar larvae of the noctuids Helicoverpa armigera (Hübner) and Spodoptera exigua (Hübner) on field beans under both laboratory and greenhouse conditions. The m...