INSECTICIDAL EFFICACY OF PARTHENIUM HYSTEROPHORUS ON LIPAPHIS ERYSIMI - A FIELD STUDY

摘要

A field study was undertaken to assess the efficacy of Parthenium hysterophorus along with several other plants, viz. Cannabis sativa; Melilotus alba; Anagallis arvensis; Gliricidia sepium Gliricidia maculata; Melia azadirachta; Chenopodium album; Solanum nigrum; Eclipta alba: Saccharum spontaneum and Amaranthus spinosus. These above mentioned plant extracts were introduced on the mustard oil seed plant - Brassicajuncea, for controlling mustard aphid [Lipaphis erysimi]. This investigation clearly denoted that out of eleven plant extracts under reference, extract of P. hysterophorus showed significant insecticidal efficacy on B. juncea for reduction of mustard aphid population (9.7 aphids per plant, compared to 21.7 in control) in contrast to other plant extracts (20.6 - 42.5 aphids per plant) used in the study.