scholarly journals Efficacy of Biorational Compounds against Mustard Aphid (Lipaphis erysimi Kalt.) and English Grain Aphid (Sitobion avenae Fab.) under Laboratory Conditions in Nepal

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Dipak Khanal ◽  
Salu Maharjan ◽  
Jamuna Lamichhane ◽  
Pritika Neupane ◽  
Srijana Sharma ◽  
...  
Keyword(s):  
Block Design ◽  
Aqueous Suspension ◽  
Pure Water ◽  
Sitobion Avenae ◽  
Lipaphis Erysimi ◽  
Control Treatment ◽  
Verticillium Lecanii ◽  
Mustard Aphid ◽  
Laboratory Conditions ◽  
Grain Aphid

Mustard aphid (Lipaphis erysimi) and English grain aphid (Sitobion avenae) are among the most important pests in mustard and wheat fields in Nepal. Biocide Manic (Metarhizium anisopliae a.i. = 1 × 109 spores/ml) at 3 ml/l water, Agri Sakti (Beauveria bassiana a.i. = 1 × 109 spores/ml) at 3.3 ml/l water, Varunastra (Verticillium lecanii spores 2% aqueous suspension, 2 × 108 CFU/ml) at 6 ml/l water, Mahastra (Bacillus thuringiensis var. kurstaki 0.5% wettable powder) at 6 g/l water, Neemraj Super (Azadirachitin 0.3% w/w) at 3.3 ml/l water, Tracer (Spinosad 90% spinosyns) at 0.33 ml/l water, and control treatment (pure water) were used to test their efficacy against L. erysimi and S. avenae, using leaf dip and spray methods under laboratory conditions in Rupandehi, Nepal, in the year 2018. Each treatment was replicated four times, and the experiment was carried out in a randomized complete block design. Mortality of aphids was recorded at 24, 48, 72, and 98 hours after treatment application. The result revealed highest mortality of mustard aphids with Agri Sakti at 24 hours after treatment (HAT); however, Neemraj Super was found to be the most effective at 48, 72, and 96 HAT with the leaf spray method. With the leaf dip method, Neemraj Super killed more mustard aphids than other treatments at all observed time points. Among tested biorational products, Agri Sakti was found to be most effective against English grain aphids in both leaf spray and leaf dip methods. In all the bioassays, the mortality caused by biorational compounds over control was highly significant. The present study suggests for further verification of the biorational products in the field and development of novel management strategies against different species of aphids.

Efficacy of sub lethal doses of Insecticides on mustard aphid, Lipaphis erysimi Kalt

2018 ◽  
Vol 3 (01) ◽  
pp. 16-19
Author(s):  
Wajid Hasan ◽  
Nida Asif ◽  
Shweta Patel ◽  
N. K. Singh ◽  
Rajendra Singh
Keyword(s):  
Lipaphis Erysimi ◽  
Mustard Aphid ◽  
Laboratory Conditions ◽  
Lambda Cyhalothrin ◽  
Lethal Doses

The present study was done to know the efficacy of sub lethal doses Insecticides on mustard aphid, L. erysimi Kalt under laboratory conditions. Results revealed that the highest mortality of L erysimi were observed 100 % (Cypermethrin 10EC and Dimethoate 30 EC) followed by 93.33% (Thiamethoxam 25 WG, Imidacloprid 70 WG ), 86.67% (Acetamiprid 20 SP), 73.33% (Chlorantraniliprole 18.5 SC, Fenpyroximate 5 SC), 60% (Pyriproxyfen 10 EC, Fipronil 5 SC) at 72 Hrs after treatment in 0.001% concentration. At 72 Hrs after treatment in 0.002% concentration the highest mortality were observed 100% (Cypermethrin 10EC, Chlorantraniliprole 18.5 SC and Dimethoate 30 EC) followed by 93.33% (Lambda cyhalothrin 5EC, Imidacloprid 70 WG), 86.67% (Thiamethoxam 25 WG), 60% (Pyriproxyfen 10 EC), 80% (Fenpyroximate 5 SC), 73.33% (Fipronil 5 SC), 66.67% (Pyriproxyfen 10 EC, Acetamiprid 20 SP). Whereas Treated with 0.003% the highest mortality were observed 100% (Dimethoate 30 EC, Chlorantraniliprole 18.5 SC, Lambda cyhalothrin 5EC, Imidacloprid 70 WG Cypermethrin 10 EC) followed by 93.33% (Thiamethoxam 25 WG, Fenpyroximate 5 SC), 80% (Acetamiprid 20 SP, Pyriproxyfen 10 EC) and lowest 66.67% mortality recode in treated with Fipronil 5 SC.

Efficacy of novel insecticides against mustard aphid Lipaphis erysimi (Kaltenbach)

2018 ◽  
Vol 3 (01) ◽  
pp. 62-70
Author(s):  
Nand Kishor Maurya ◽  
Rajendra Singh ◽  
Joginder Singh ◽  
Rashmi Nigam ◽  
Wajid Hasan ◽  
...  
Keyword(s):  
Block Design ◽  
Cost Benefit ◽  
Lipaphis Erysimi ◽  
Research Centre ◽  
Time Intervals ◽  
Mustard Aphid ◽  
Randomized Block Design ◽  
Cost Benefit Ratio ◽  
Crop Research ◽  
Better Than

An examination was carried out to study in randomized block design with three replications at Crop Research Centre, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut during rabi 2014-15, the evaluation of novel insecticides viz., imidadoprid, acephate, chlorpyriphos, fipronil, thiamethoxam, dimethoate, and pymetrozine, against L. erysimi revealed that all the treatments schedule proved better than control at all the time intervals after each spray. The thiamethoxam 25% WG @100 g/ha was found most effective treatment in reducing the aphids population followed by acephate 75 SP @ 500g/ha. The pymetrozine 50 WG @ 250 g/ha was recorded less effective. Among conventional insecticides imidadoprid 17.8 SL @ 150 ml/ha was found more effective than dimethoate 30% EC @ 1000 ml/ha and fipronil 5 SC @ 1000 ml/ha. The higher yield was obtained from thiamethoxam 25% WG @100 g/ha with (17.15 q/ha) whereas, highest cost benefit ratio is obtained from imidadoprid 17.8 SL @ 150 ml/ha with (1:9.54).

scholarly journals Preying capacity of different established predators of the aphid Lipaphis erysimi (Kalt.) infesting rapeseed-mustard crop in laboratory conditions

2013 ◽  
Vol 49 (No. 2) ◽  
pp. 84-88 ◽  
Author(s):  
K. Singh ◽  
N.N. Singh
Keyword(s):  
Coccinella Septempunctata ◽  
Juvenile Stage ◽  
Lipaphis Erysimi ◽  
Mustard Aphid ◽  
Larval Stages ◽  
Laboratory Conditions ◽  
Mustard Crop ◽  
Cropping Seasons ◽  
Syrphid Flies

Experiments on the preying capability of different stages of larvae of coccinellid and syrphid flies on the mustard aphid, Lipaphis erysimi (Kalt.), were conducted in a laboratory during the winter cropping seasons of 2009–2010 and 2010–2011. Results revealed that grubs of the Coccinella septempunctata Linn. preyed the highest number of mustard aphids (average 61.42 aphids/day) followed by Syrphus confrater Wied (34.81 aphids/day), Syrphus balteatus Deg. (32.26 aphids/day) and Ischiodon scutellaris Fab. (27.76 aphids/day) during their larval span. Among the larval stages of the coccinellid and syrphid predators, it was also analysed that the last juvenile stage of the predators was proved the mightiest devourer against the aphid L. erysimi. These predators could be used effectively for the management of L. erysimi on rapeseed-mustard crop.

scholarly journals Bio-intensive integrated management strategy for mustard aphid Lipaphis erysimi Kalt. (Homoptera: Aphididae)

2015 ◽  
Vol 7 (1) ◽  
pp. 192-196 ◽  
Author(s):  
Sunita Yadav ◽  
S. P. Singh
Keyword(s):  
Seed Yield ◽  
Integrated Management ◽  
Indian Mustard ◽  
Coccinella Septempunctata ◽  
Cost Benefit ◽  
Aphid Population ◽  
Lipaphis Erysimi ◽  
Verticillium Lecanii ◽  
Alternative Measure ◽  
Mustard Aphid

Among the various treatments evaluated for their bio-efficacy against mustard aphid on Indian mustard during 2011-12 and 2012-13 at CCS Haryana Agricultural University, Hisar, the spray of Dimethoate 30 EC @ 1 ml/l followed by Verticillium lecanii @ 108 CS/ml was proved to be the best treatment with pooled mean aphid population of 4.5, 3.25 and 1.65 aphids/plant as against 22.0, 24.0 and 26.0 aphids/plant in the control after 3, 7 and 10 days of treatment, respectively. The pooled mean seed yield was also maximum (1485.0 kg/ha) in this treatment as compared to control (1305.0 kg/ha).The treatment was found on par with spray of dimethoate @ 1 ml/l followed by Coccinella septempunctata @ 5,000 beetles/ha with pooled mean aphid population of 5.0, 4.0 and 2.0 aphids/plant after 3, 7 and 10 days of treatment, respectively and pooled mean seed yield of (1470.0 kg/ha). But the cost benefit ratio was maximum (7.25) in treatment dimethoate followed by C. septempunctata and NSKE @ 5% followed by C. septempunctata @ 5,000 beetles/ha (6.68). Thus, entomopathogenic fungi like V. lecanii or NSKE along with release of C. septempunctata can be used as alternative measure to manage mustard aphid instead of solely relying on insecticides.

scholarly journals Biointensive integrated management of Lipaphis erysimi Kalt. (Homoptera: Aphididae) in Brassica spp.

2017 ◽  
Vol 9 (4) ◽  
pp. 2132-2136
Author(s):  
Deepak Sharma ◽  
Satyapal Yadav ◽  
Sunita Yadav
Keyword(s):  
Integrated Management ◽  
Indian Mustard ◽  
Cost Benefit ◽  
Cost Effective ◽  
Lipaphis Erysimi ◽  
Verticillium Lecanii ◽  
Research Station ◽  
Seed Kernel ◽  
Neem Seed ◽  
Mustard Aphid

Field experiment was conducted at Regional Research station, Samargopalpur, Rohtak (Haryana) during Rabi season of the year 2015-2016 to evaluate bioefficacy of various treatments against mustard aphid, Lipaphis-erysimi on Indian mustard. Treatments were: T1–Verticillium lecanii @ 108 CS/ml, T2–Beauveria bassiana @ 108 CS/ml, T3 - Neem seed kernel extract @ 5%, T4 - Neem seed methanol extract @ 5%, T5 - V. lecanii @ 108 CS/ml + Clipping of infested twigs, T6 - B. bassiana @ 108 CS/ml + Clipping of infested twigs, T7 - NSKE @ 5% + Clipping of infested twigs, T8 - V. lecanii @ 108 CS/ml + NSKE @ 5%, T9 - B. bassiana @ 108 CS/ml + NSKE @ 5%, T10 - Dime-thoate 30EC @ 250 ml/acre. Dimethoate was found to be most effective in reducing the aphid population (95.03 %) followed by V. lecanii @ 108 CS/ml + NSKE @ 5% (88.52 %), NSKE @ 5% + Clipping of infested twigs (87.77 %) and B. bassiana @ 108 CS/ml + NSKE @5% (86.91 %) after ten days of spray. The highest seed yield was recorded in treatment dimethoate 30EC (1702 kg/ha) followed by V.lecanii @ 108 CS/ml +NSKE @ 5% (1635 kg/ha), NSKE @ 5% + Clipping of infested twigs (1626 kg/ha) and B.bassiana @ 108 CS/ml + NSKE @ 5% (1617 kg/ha). Dimethoate was found to be highly cost effective with highest cost benefit ratio (1:14.92) followed by NSKE @ 5% + clipping of infested twigs (1:13.81) and NSKE @ 5% (1:11.41).

scholarly journals Relative incidence of aphid (Lipaphis erysimi) and Alternaria blight on mustard in sub-mountainous region of Punjab

2021 ◽  
Vol 42 (3) ◽  
pp. 694-699
Author(s):  
Rakesh Kumar Sharma ◽  
◽  
K.K. Sharma ◽  
Keyword(s):  
Rating Scale ◽  
Block Design ◽  
Lipaphis Erysimi ◽  
Mountainous Area ◽  
Mustard Aphid ◽  
Aphid Infestation ◽  
Alternaria Blight ◽  
Relative Incidence ◽  
Randomized Block Design ◽  
Cent Disease

Aim: To study the relative incidence of mustard aphid and Alternaria blight on different rapeseed-mustard varieties to assess their resistant or tolerant and most suitable variety for sub-mountainous area of Punjab. Methodology: The experiment was conducted on four mustard varieties (RLM-619, PBR-97, PBR-357 and Giriraj) with five replications in randomized block design during two crop seasons, i.e. Rabi 2018-19 and 2019-20 under sub-mountainous areas of Punjab. Aphid population was recorded at weekly interval. Disease severity was calculated using 0-5 rating scale and per cent disease intensity was calculated. Results: RLM-619 variety exhibited the lowest aphid infestation (7.92 and 8.96%) and minimum per cent disease intensity (28.0 and 33.33%) on leaves and siliqua (33.33 and 38.33%) which also gave highest yield (739.33 kg acre-1 and 735.67 kg acre-1) during the year 2018-19 and 2019-20. The lowest seed yield (487.67 kg acre-1 and 480.67 kg acre-1) was recorded in variety Giriraj, which was found susceptible to aphid infestation and Alternaria blight. Interpretation: RLM-619 exhibited tolerance against aphid and Alternaria blight, hence, this variety may be used as a key component under integrated pest and disease management in sub-mountainous area of Punjab in future.

In-field prevalence of resistant grain aphid Sitobion avenae (Fabricius)

2020 ◽  
Vol 120B (1) ◽  
pp. 29
Author(s):  
Walsh ◽  
Schmidt ◽  
Williamson ◽  
Gaffney
Keyword(s):  
Sitobion Avenae ◽  
Grain Aphid

ESTIMATION OF CONSUMPTIVE USE OF POTATO CROP PIANTED UNDER DRIP IRRIGATION SYSTEM BY USING SWRT TECHNOLOGY

2020 ◽  
Vol 10 (1) ◽  
pp. 271-282
Author(s):  
J.N. Abedalrahman ◽  
R.J. Mansor ◽  
D.R. Abass
Keyword(s):  
Water Consumption ◽  
Drip Irrigation ◽  
Soil Depth ◽  
Irrigation System ◽  
Potato Crop ◽  
Block Design ◽  
Organic Fertilizer ◽  
Control Treatment ◽  
Drip Irrigation System ◽  
Spring Season

A field experiment was carried out in the field of the College of Agriculture / University of Wasit, located on longitude  45o   50o   33.5o   East and latitude 32o 29o 49.8o North, in Spring season of the agricultural season 2019, in order to estimate the water consumption of potato crop using SWRT technology and under the drip irrigation system. The experiment was designed according to Randomized Complete Block Design (RCBD) with three replications and four treatments that include of the SWRT treatment (the use of plastic films under the plant root area in an engineering style), and the treatment of vegetal fertilizer (using Petmos), organic fertilizer (sheep manure), and the control treatment . Potato tubers (Solanum tuberosum L.)  var. Burin was planted for spring season on 10/2/2019 at the soil depth of 5-10 cm. The highest reference water consumption for the potato crop during the season was calculated by Najeeb Kharufa, which was 663.03 mm. The highest actual water consumption for the potato crop during the season for the control treatment was 410.1 mm. The results showed increase in the values of the crop coefficient (Kc) in the stages of tubers formation and tubers filling stage as compared to the vegetative and ripening stages, ranged from 1.37-1.92 for the two stages of tubers formation and tubers filling. The SWRT treatment gave the highest water use efficiency during the season, was 3.46 kg m-3 .

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