scholarly journals Insecticidal Activity of Vegetable Oils against Mustard aphid, Lipaphis erysimi Kalt., under Field Condition

2006 ◽  
Vol 55 (5) ◽  
pp. 227-231 ◽  
Author(s):  
Dheeraj MISHRA ◽  
A.K. SHUKLA ◽  
A.K. DUBEY ◽  
A.K. DIXIT ◽  
K. SINGH
Keyword(s):  
Vegetable Oils ◽  
Insecticidal Activity ◽  
Field Condition ◽  
Lipaphis Erysimi ◽  
Mustard Aphid

BIOPESTICIDE POTENTIAL OF (7R)-TRANS, TRANS-NEPETALACTONE AND CIS-LACHNOPHYLLUM ESTER IN CONTROL OF MUSTARD APHID, LIPAPHIS ERYSIMI (KALT.)

2015 ◽  
Vol 77 (2) ◽  
Author(s):  
Vinod Kumar ◽  
Chandra Shekhar Mathela ◽  
Geeta Tewari ◽  
Ajay Kumar Pandey
Keyword(s):  
Essential Oils ◽  
Insecticidal Activity ◽  
2D Nmr ◽  
Positive Control ◽  
Lipaphis Erysimi ◽  
Acetylenic Compound ◽  
Mustard Aphid ◽  
Synthetic Pesticide ◽  
Natural Pesticides ◽  
Erigeron Annuus

(7R)-trans, trans-nepetalactone; a monoterpene iridoid (1) and acetylenic compound named cis-lachnophyllum ester (2) were isolated from the essential oils of Nepeta elliptica and Erigeron annuus, respectively and characterized using a combination of their spectral data  (1D-and 2D-NMR, MS, IR). Compound 1 and 2 were tested for biopesticide activity against mustard aphid, Lipaphis erysimi (Kalt.). Compound 1 exhibited high insecticidal activity towards L. erysimi with LC50 values of 2.18 and 2.73 mg/mL; LT50 values of 15.24 and 17.18 h. Compound 2 also displayed significant insecticidal activity having LC50 values of 0.85 and 4.70 mg/mL; LT50 values of 13.25 and 26.2 h. The activity of compounds 1 and 2 were comparable with synthetic pesticide, monocrotophos used as positive control and thus has potential as natural pesticides for use in economically important crops.

scholarly journals Effectiveness of three insecticides against mustard aphid and predator under field condition

1970 ◽  
Vol 35 (1) ◽  
pp. 179-187 ◽  
Author(s):  
AKMM Maula ◽  
MMR Shah ◽  
NA Siddquie ◽  
MAA Mamun ◽  
M Begum
Keyword(s):  
Field Condition ◽  
Coccinella Septempunctata ◽  
Toxic Action ◽  
Lipaphis Erysimi ◽  
Mustard Aphid ◽  
Treated Plot

Studies were conducted in the field to determine the effectiveness of three insectidicdes, Metasystox-R 25EC, Dimethion 40 EC, and Fentro 50 EC applied against mustard aphid, Lipaphis erysimi Kalt. and measure their toxic action on the predator Coccinella septempunctata L. The mustard plants were sprayed with the insecticides at 0.05% and 0.025% a. i. at 50 and 70 days after sowing. The mortality of both mustard aphid and the predator was assessed at 1, 4, and 7 days after first and second spraying of insecticides. Metasystox-R showed the most effectiveness among the three insecticides causing the highest mortality of mustard aphid followed by Dimethion and Fentro. But the lowest mortality of Coccinella septempunctata was obtained in Dimethion treated plot, and Fentro treated plot showed the highest mortality indicating that the Dimethion was less toxic and Fentro was more toxic to the predator. Keywords: Effectiveness; insecticides; mustard aphid; predator. DOI: 10.3329/bjar.v35i1.5880Bangladesh J. Agril. Res. 35(1) : 179-187, March 2010

scholarly journals Bio-Efficacy Of Some Plant Leaf Extracts Against Mustard Aphid, Lipaphis Erysimi Kalt. On Indian Mustard, Brassica Juncea

2010 ◽  
Vol 50 (2) ◽  
pp. 130-132 ◽  
Author(s):  
Arshad Ali ◽  
Parvez Rizvi ◽  
Farmanur Khan
Keyword(s):  
Brassica Juncea ◽  
Insecticidal Activity ◽  
Indian Mustard ◽  
Lipaphis Erysimi ◽  
Calotropis Procera ◽  
Leaf Extracts ◽  
Argemone Mexicana ◽  
Mustard Aphid ◽  
Plant Leaf ◽  
Tagetes Minuta

Bio-Efficacy Of Some Plant Leaf Extracts Against Mustard Aphid,Lipaphis ErysimiKalt. On Indian Mustard,Brassica JunceaThe bio-efficacy of four plant leaf extractsviz., apple of sodom,Calotropis proceraAiton; Mexican poppy,Argemone mexicanaLinnaeus; Mexican marigold,Tagetes minutaLinnaeus and Indian neem,Azadirachta indicawere tested against mustard aphid,Lipaphis erysimion Indian mustard,Brassica juncea. The highest per cent aphid reduction during first, second and third spray were 28.79, 40.52 and 59.32 at 1 : 10 g/ml; 34.70, 44.49 and 66.14 at 1 : 5 g/ml and 53.88, 64.84 and 100.00 at 1 : 2.5 g/ml with Indian neem. However, Mexican marigold was also effective at highest concentration (1 : 2.5 g/ml) and reduced 96.38 per centL. erysimi. All the treatments of plant leaf extracts showed insecticidal activity, but Indian neem followed by Mexican marigold reduced the aphid population to a great extent.

scholarly journals Efficacy of plant leaf extracts against mustard aphid Lipaphis erysimi (Kalt.) under field condition

2019 ◽  
Author(s):  
Jiban Shrestha
Keyword(s):  
Field Condition ◽  
Lipaphis Erysimi ◽  
Leaf Extracts ◽  
Mustard Aphid ◽  
Plant Leaf

Efficacy of plant leaf extracts against mustard aphid Lipaphis erysimi (Kalt.) under field condition

scholarly journals Scanning electron microscopic studies of Beauveria bassiana against Lipaphis erysimi Kalt

2017 ◽  
Vol 9 (1) ◽  
pp. 461-465
Author(s):  
Tanvi Sharma ◽  
Neelam Joshi ◽  
Anu Kalia
Keyword(s):  
Beauveria Bassiana ◽  
Lipaphis Erysimi ◽  
Electron Microscopic ◽  
Time Intervals ◽  
Mustard Aphid ◽  
Commercial Formulation ◽  
Fungal Isolates ◽  
Scanning Electron Microscopic ◽  
Microscopic Studies ◽  
Scanning Electron

This work was aimed to identify the LC50 of the indigenous fungal isolates for controlling L. erysimi infesta-tion in mustard aphid besides to probe the mechanism of action of the local isolates and comparison of the efficacy with the reference culture and commercial formulation ‘Mycojaal’. Three isolates of entomopathogenic fungi Beauveria bassiana were tested for infection on nymph of Lipaphis erysimi Kalt. using scanning electron microscopy (SEM) to record any variation. The SEM revealed adhesion of spores of B.bassiana followed by penetration of L.erysimi nymph surface. It was observed that all Beauveria isolates showed little variation with respect to penetration and adhesion at different time intervals. Further, lethal concentration (LC50) values of B. bassiana isolates against L. erysimi was recorded and was lowest (0.05x107 spores/ml) in B. bassiana MTCC 4495 and highest (0.11.X107 spores/ml) was recorded in native isolate F10 after 120 hours of treatment. The study has established the need for the isolation and evaluation of the indigenous Beauveria isolate. Moreover, it also exhibited the efficacy of the reference and commercially available biocontrol agents.

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.

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