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Showing 1 to 20 of 94 for “"weevil"”.
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Inheritance of Weevil Resistance in Maize
The study of the inheritance and gene action of weevil resistance in maize was undertaken using a 12 parent half diallel design. Seven resistant inbred lines were obtained from CIMMYT-Zimbabwe and five susceptible lines were obtained from soils and crop Research Branch(SCRB), Zambia. The lines were …
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Inheritance of Weevil Resistance in Maize
The study of the inheritance and gene action of weevil resistance in maize was undertaken using a 12 parent half diallel design. Seven resistant inbred lines were obtained from CIMMYT-Zimbabwe and five susceptible lines were obtained from soils and crop Research Branch(SCRB), Zambia. The lines were …
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Bionomics of the Clover Leaf Weevil, Hypera Punctata (Fabricius)
Made available in DSpace on 2014-12-05T21:33:55Z (GMT). No. of bitstreams: 1 0016415.pdf: 5568542 bytes, checksum: 7f2fc9b7d4e126ec2c5847535438cd5b (MD5) Previous issue date: 1956
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Evolutionary Studies in the Weevil Genus Lixus (Coleoptera, Curculionidae)
Made available in DSpace on 2014-12-05T21:34:04Z (GMT). No. of bitstreams: 1 6104328.pdf: 3550653 bytes, checksum: 991674c7f5341e192f80c3c57037fbea (MD5) Previous issue date: 1961
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Mating behavior of the alfalfa weevil, Hypera postica (Gyllenhal)
… were studied in the laboratory. Postdiapausing weevils, collected in April, and nondiapausing weevils, reared in the laboratory, were utilized. In both groups, the males aggressively mounted the females from any angle or position with little or no indication of prior courtship. In petri dishes …
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Bionomics and Developmental Model of the Alfalfa Weevil in Illinois
Made available in DSpace on 2014-12-11T18:05:42Z (GMT). No. of bitstreams: 1 7317566.pdf: 4712547 bytes, checksum: 8591d282878d9f881573a92d853c6048 (MD5) Previous issue date: 1973
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Bionomics and Sampling of the Imported Crucifer Weevil, Baris Lepidii Germar
The imported crucifer weevil, Baris lepidii Germar, is a minor pest of a wide range of cruciferous plants grown in central and southern Europe. In May of 1977 this insect was discovered infesting commercial horseradish fields in Illinois. A research program composed of several subsections was …
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Phenology and Management of Annual Bluegrass Weevil on Virginia Golf Courses
Annual bluegrass weevil (Listronotus maculicollis Kirby) (Coleoptera: Curculionidae) (ABW) is a major pest of annual bluegrass (Poa annua L.) and creeping bentgrass (Agrostis stolonifera L.) on golf courses in the northeastern United States. The asynchronous life cycle makes managing ABW difficult, …
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Comparative Resistance of Maize populations to the maize weevil,Sitophilus zeamais Motschulsky
… the small-holder farmers in Africa. The Maize weevil, Sitophilus zeamais Motschulsky, is one of the most important storage pest for which breeding for resistance is the best option for reducing storage losses. A study was conducted to identify maize cob and grain characteristics conferring …
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Comparative Resistance of Maize populations to the maize weevil,Sitophilus zeamais Motschulsky
… the small-holder farmers in Africa. The Maize weevil, Sitophilus zeamais Motschulsky, is one of the most important storage pest for which breeding for resistance is the best option for reducing storage losses. A study was conducted to identify maize cob and grain characteristics conferring …
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Field Survival of Bathyplectes Curculionis (Thomson), a Parasite of the Alfalfa Weevil
Made available in DSpace on 2014-12-14T07:03:57Z (GMT). No. of bitstreams: 1 7708956.pdf: 1836765 bytes, checksum: e1652d5874083c6074f5dcb43ad00bf3 (MD5) Previous issue date: 1976
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Population dynamics, mortality factors, and pest status of alfalfa weevil in Virginia
The alfalfa weevil, Hypera postica (Gyllenhal) (Coleoptera: Curculionidae), remains a serious pest in Virginia despite being under complete biological control in the northeastern U.S. In 1996, a survey of 187 alfalfa fields in Virginia was initiated to determine the current pest status of alfalfa …
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Integrated pest management of the banana weevil, Cosmopolites sordidus (Germar), in South Africa
The banana weevil, Cosmopolites sordidus, is an economical pest of Musa, distributed to most areas where the crop is grown. The beetle larvae produce feeding tunnels in the pseudostem and rhizome, reducing bunch weight and causing toppling or snapping of plants. In developing an integrated pest …
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Population dynamics of overwintering life stages of the alfalfa weevil, Hypera postica (Gyllenhal)
… elevations, winters are relatively harsh and weevil pressure on the alfalfa crop is usually light. Much heavier pressure is the rule at lower elevations where winters are milder. The goal of this study was to examine the effects of fall and winter temperatures, parasites, and fall regrowth …
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Studies of the effects of apholate on the alfalfa weevil, Hypera Postica (Gyllenhal)
… apholate on diapausing and nondiapausing alfalfa weevil, Hypera postica (Gyllenhal), were studied. Different stages, sexes, and ages of the weevil were treated with aqueous-apholate solution. Adult topical application and larval and adult dipping methods were used in the experiment. Both showed …
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Insecticidal and repellant activities of selected botanical extracts against rice weevil (Sitophilus oryzae L.)
Stored rice is infected primarily by adult rice weevil (Sitophilus oryzae L.). Botanical pesticides could be alternatives to synthetic insecticides due to their effectiveness and lower toxicity. This study investigated repellence activity, insecticidal activity and phytochemical composition of …
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