A field experiment was conducted on mustard aphid Lipaphis erysimi Kalt. and its natural enemies to document seasonal incidence over four varieties of during rabi season at the Instructional Farm, Chandra Shekhar Azad University Agriculture Technology, Kanpur. The aphids appeared in first week January flowering stage, which peaked 7th standard were 115.5-155.0, 98.01-121.0, 75.5-108.6 55.80-86....

Naturally occurring parasitoids may provide sufficient control of aphid pests in fields undisturbed by insecticides. Yet the efficacy of these parasitoids may be strongly influenced by characteristics of their hosts and by the availability of alternative hosts in neighbouring crops. In the present study, parasitoid guild structure was compared in two aphid species, Brevicoryne brassicae and Lip...

A study was conducted in the Biocontrol Laboratory, Department of Entomology, College Agriculture, OUAT, Bhubaneswar, Odisha during 2020-21 to record influence larval diets on pupal period and size cocoon Chrysoperla zastrowi sillemi (Esben-Peterson). Six i.e. T1 (Purple aphid, Aphis craccivora Koch.), T2 (Green Myzus persicae (Sulzer)), T3 (Mustard Lipaphis erysimi (Kalt.)), T4 (Papaya mealy b...

There is extensive knowledge on the effects of insect herbivory on volatile emission from vegetative tissue, but little is known about its impact on floral volatiles. We show that herbivory by phloem-feeding aphids inhibits floral volatile emission in white mustard Sinapis alba measured by gas chromatographic analysis of headspace volatiles. The effect of the Brassica specialist aphid Lipaphis ...

The homopteran sucking insect, Lipaphis erysimi (mustard aphid) causes severe damage to various crops. This pest not only affects plants by sucking on the phloem, but it also transmits single-stranded RNA luteoviruses while feeding, which cause disease and damage in the crop. The mannose-binding Allium sativum (garlic) leaf lectin has been found to be a potent control agent of L. erysimi. The l...

Mustard (Brassica juncea L.) production in India suffers from aphid, Lipaphis erysimi (Kaltenbach), infestation considerably. Role of weather on the incidence and development of mustard aphids was assessed from experimental data from six north Indian locations. Aphid appearance and population build up was found to be regulated by temperature and time to attain peak population was relatively sho...

Based on MS and NMR data and bioassay-guided tracing, three insecticidal alkaloids I, II and III from Cynanchum mongolicum were identified to be antofine N-oxide, antofine and tylophorine. Alkaloid I was more toxic than alkaloids II and III, but they were less active against Spodoptera litura than total alkaloids. The contact toxicity from these alkaloids against the aphid Lipaphis erysimi was ...

The experiment was conducted to compare effectiveness of (BtA) Bacillus thuringiensis and Abamectin @ 1gm/l with chlorpyrifos @ 5ml/l, megamos @ 1.25 ml/l and trend @ 4ml/l in controlling aphids (Lipaphis erysimi) on rapeseed (Brassica campestris) Agriculture Research Farm NWFP Agricultural University Peshawar. These compounds were first sprayed to the point of runoff when the density of the ap...