Assessment of damage by greenbug (Homoptera:Aphididae) to mixtures of resistant and susceptible Sorghum, Sorghum Bicolor (L.) Moench, hybrids as affected by natural enemies /
absence of natural enemies. Effects were measured by
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1996.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | absence of natural enemies. Effects were measured by assessment of greenbug abundance, vegetative response, and between mixtures. Experiments do suggest mixtures containing a minimum of 50% resistant plants may be as Data. indicated plant height may have confounded during 1994 and 1995. Greenhouse experiments assessed effective as all resistant stands experiencing moderate effective management of greenbug biotypes. Five biotype E effective managing greenbug. Treatments which allowed effects of mixtures on greenbug and field experiments evaluated mixture effects on greenbug in the presence and experiments from 1993 to 1995 and field experiments on the genes for pathogens in small grains and may contribute to the grain yield data. Greenbug abundance and plant damage data indicated a Greenbug abundance trends in greenhouse experiments Greenbug abundance was significantly reduced in greenbug pressure. greenbug resistant and susceptible sorghum genotype mixtures Greenbug, Schizaphis graminum (Rondani), is an important greenbugs than those mixtures containing at least 50% has been used to manage greenbug. Greenbug biotype formation inconclusive for determining statistical differences insect pest of sorghum, Sorghum bicolor (L.) Moench, in the Multilines have been used to prolong duration of resistance natural enemies access to greenbug had significantly plant height results, mixtures containing 75% resistant Plant height, plant mass, and grain yield data were plant mixture containing 25% resistant plants was least plants for greenbug management in seedling sorghum. plants may be equal to sorghum stands of all resistant reaching economic levels in field experiments. renders resistant sorghums ineffective as an IPM component. resistant plants were less effective for managing resistant plants. Plants of all mixtures were results in the greenhouse experiments. Considering statistically equal for plant height and insect damage. suggested plant mixtures containing 25% or less suggesting natural enemies prevented greenbug from taller plants, greater plant masses, and grain yield Texas A&M University Research Farm near College Station, TX than those in which natural enemies were excluded. treatments where natural enemies were allowed access, United States. An integrated pest management (IPM) approach were studied. These mixtures were evaluated in greenhouse |
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| Item Description: | "Major subject: Plant Breeding". Vita. |
| Physical Description: | xvi, 81 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |