Open AccessStudy of The Effect of Hot Water Extract of Some Plants on The Alfalfa Weevil Hypera Postica (Gyllenhal, 1813) (Coleoptera: Curculionidae)
Author(s) -
Alaa Hussein Abed Al Hamadani,
Meeri Kadhim Mubasher Al-Fatlawi,
Mohamd Khalel Ibrahim
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/923/1/012002
Subject(s) - hypera postica , weevil , biology , curculionidae , larva , pupa , instar , botany , horticulture , toxicology , zoology
The research was conducted in the laboratory of insects in the Faculty of Agriculture/the University of Muthanna about studying the effect of Hot water extract of the pomegranate peels, eucalyptus leaves and basil leaves in different stages (egg, larva, pupa and adult) for Alfalfa Weevil Hypera postica . The results showed that the pomegranate peel extract superiority the percentage of mortality in all the stages used in the experiment over the other plant extracts mentioned above, followed by eucalyptus leaf extract and then basil leaf extract, The results showed that the pomegranate peel extract was effective in controlling the larval stage of the insect, especially st and 2 nd larvae instars in addition to the adult stage, the highest percentage of mortality in the larval stage of the insect at the first larval age was (60.0, 46.6 and 26.7%) For all extracts respectively at 1.5 mg/ml after 5 days of treatment. In the pupae stage the highest percentage of mortality was (16.7, 10.0 and 03.3%) at the concentration of 1.5 mg/ml For all extracts respectively. while the effectiveness was very weak in controlling of the eggs and pupa of insect and all extracts. where the highest percentage of mortality in the eggs was at 1.5 mg/ml. It was (20.0, 10.0 and 03.3%) respectively after 7 days of treatment. While The highest mortality rate in adult was (53.3, 40.0 and 16.7%) At 1.5mg/ml for all extracts respectively compared with control treatment (00.0%) for all the insect stages. The plant extracts used in the experiment at a concentration of 0.5 mg/ml did not show any effect on the rates of insect death after a day of treatment and for all stages that reaching (00.0%).