Selective Weed Control in Spring-Planted Alfalfa: Etfect on Leafhoppers and Planthoppers (Homoptera: Auchenorrhyncha) with Emphasis on Potato Leafhopper

Lamp, William O.; Barney, Robert J.; Armbrust, Edward J.; Kapuśta, George

doi:10.1093/ee/13.1.207

Cited by 28 publications

(19 citation statements)

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“…Soybean-wheat relay intercropping systems exhibit substantially reduced density of the potato leafhopper, Empoasca fabae (Harris), an insect pest of soybean, relative to soybean monocultures (Hammond and Jeffers 1990). Similar suppression of abundance of this insect has been found when alfalfa has been grown in the presence of grassy weeds (Lamp et al 1984a, Oloumi-Sadeghi et al 1987, forage grasses (Coggins 1991), or oat (Lamp 1991), compared with alfalfa monocultures. Although the potato leafhopper rarely causes economic damage to commercial varieties of soybean, it is among the most abundant herbivores inhabiting the crop in the Midwest (Helm et al 1980).…”

mentioning

confidence: 82%

Density of Potato Leafhopper (Homoptera: Cicadellidae) in Response to Soybean-Wheat Cropping Systems

Hammond¹

2001

Environ Entomol

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mentioning

confidence: 82%

Density of Potato Leafhopper (Homoptera: Cicadellidae) in Response to Soybean-Wheat Cropping Systems

Hammond¹

2001

Environ Entomol

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“…Populations of the potato leafhopper, Empoasca fabae, on cantaloupe are higher when it is interplanted with other host plants (Toba et al, 1977). On the other hand, when beans (an important host plant) are interplanted with nonhost plants, the abundance of this leafhopper decreases (Andow, 1983;Lamp et al, 1984). Similarly, populations of Empoasca kraemeri were reduced when beans were interplanted with nonhost grasses (Altieri et al, 1977;Schoonhoven et al, 1981), but…”

Section: Plant Diversity and Intercroppingmentioning

confidence: 99%

Cropping Systems, Insect Movement, and the Spread of Insect-Transmitted Diseases in Crops

Power¹

1990

Ecological Studies

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Food production in the tropics has undergone tremendous modification in the last several decades, with traditional small, diversified farming systems being replaced by large-scale, input-intensive monocultures. It is clear that insecticide abuse and widespread dependence on single crop genotypes have resulted in many problems for the farmer, the environment, and the health and safety of rural workers (Bull, 1982). Along with other insect pests, insects that transmit pathogens to crops have evolved resistance to widely-used insecticides and have escaped regulation by their natural enemies. It is essential that we use our understanding of basic ecological processes to address the need for low-input agricultural technology for the tropics. Ifwe are to encourage decreased use of pesticides, then we must offer alternative solutions to the problems of pest damage. These solutions depend on an adequate understanding of pest biology and behavior.The goal is to manipulate pest organisms to decrease the damage they cause. One of most direct methods of control is the alteration of the crop itself, through plant breeding or through planting arrangement. U nfortunately, varieties resistant to insect vectors are not available for many crops. Moreover, as new resistant varieties have been developed, vectors (like other insect pests) have evolved to overcome resistance traits in the plants (Pathak and Heinrichs, 1982). Where resistant varieties exist, it is S. R. Gliessman (ed.), Agroecology

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“…The presence of weedy grasses in alfalfa stands has been shown to reduce potato leafhopper density , Lamp et al 1984, and Oloumi-Sadeghi et al 1987 and to reduce oviposition and increase flight of potato leafhoppers (Smith 1987). Nevertheless, an overabundance of weeds in an alfalfe field can limit and decrease the quality of yield (tCapusta 1983).…”

Section: Alternative Alfalfa Cropping Systems For Management Of Alfalmentioning

confidence: 99%

“…Diversified cropping systems reduce the overabundance of any one species, particularly pest species, and result in less crop losses relative to monocultures (Risch et al 1983, Baliddawa 1985. The hypotheses that have been suggested for the reduction in alfalfa pest densities in polycultures include; increased emigration of herbivores fi-om polycultures (Risch 1981, Andow 1991, reduced oviposition in non-host plants (Smith 1987), decreased survival of young on non-host plants (Lamp et al 1984), and increased activity of natural enemies in polycultures (Horn 1981).…”

Section: Alternative Alfalfa Cropping Systems For Management Of Alfalmentioning

confidence: 99%

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Population dynamics and management of potato leafhopper and other insect pests in forage systems

DeGooyer

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This manuscript has been reproduced from the microfilm master. TJMI films the text directly from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter &ce, while others may be from any type of computer printer.The quality of this reproduction is dependent upon the quality of the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper alignment can adversely affect reproduction.In the unlikely event that the author did not send UMI a complete manuscript and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion.Oversize materials (e.g., maps, drawings, charts) are reproduced by sectioning the original, beginning at the upper left-hand comer and continuing from left to right in equal sections with small overlaps. Each original is also photographed in one exposure and is included in reduced form at the back of the book.Photographs included in the original manuscript have been reproduced xerographically in this copy. Higher quality 6" x 9" black and white photographic prints are available for any photographs or illustrations appearing in this copy for an additional charge. Contact UMI directly to order. UMI Dissertation OrganizationThe general introduction contains a brief discussion of the importance of alfalfa followed by the justification and objectives for this research. This is followed by the literature review that contains background information on potato leafliopper biology and ecology, potato leafhopper population dynamics, alternative alfalfa cropping systems research on alfalfa insect pests, and sampling methodology and management programs for potato leafhopper. Following the general introduction, there are four papers. The first paper assesses the population dynamics and diurnal activity of potato leafhopper in Iowa forages.The second paper discusses the effect of alfalfa and forage grass intercrops on alfalfa insect pests and associated natural enemy predator populations. A third paper describes the development of a sticky trap sampling technique for potato leafhopper adults in alfalfa using a series of comparative studies. The final paper describes the evaluation of grower-oriented sampling techniques and development of a management program for potato leafliopper in alfal&. A general conclusion follows the fourth paper. References cited in the general introduction are listed after the general conclusions. Inti-oductionAlfalfa, Medicago saliva L., is the world's most valuable cultivated forage crop (Grau et al. 1985) and the most important perennial forage crop in North America (Nfichaud et al. 1988, Pick andMueller 1989). Over 11 million ha of land in the United States (Melton et al. 1988) and 4-5 million ha of land in Canada (Goplen et al. 1980) are committed to alfalfa production. Alfalfa is predominantiy grown in the northeastern and northcentral regions of 2 the U.S. (Boken et al...

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Selective Weed Control in Spring-Planted Alfalfa: Etfect on Leafhoppers and Planthoppers (Homoptera: Auchenorrhyncha) with Emphasis on Potato Leafhopper

Cited by 28 publications

References 0 publications

Density of Potato Leafhopper (Homoptera: Cicadellidae) in Response to Soybean-Wheat Cropping Systems

Density of Potato Leafhopper (Homoptera: Cicadellidae) in Response to Soybean-Wheat Cropping Systems

Cropping Systems, Insect Movement, and the Spread of Insect-Transmitted Diseases in Crops

Population dynamics and management of potato leafhopper and other insect pests in forage systems

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