Entomology Commons^™

2011 Soybean Insect Losses In The Southern Us, F. R. Musser, A. L. Catchot Jr., J. A. Davis, D. A. Herbert Jr., B. R. Leonard, G. M. Lorenz, T. Reed, D. D. Reisig, S. D. Stewart

Midsouth Entomologist

Survey-based soybean insect losses provide a glimpse of current soybean management practices and allow one to see evolving trends. This survey was initiated in Mississippi in 2004, Tennessee in 2008, and Arkansas in 2009. The 2011 survey is the first to include Alabama, Louisiana, North Carolina, and Virginia. The 2011 survey represents nearly 9.5 million acres across the southern U.S. Overall, the 2011 survey shows corn earworm to be responsible for more than 50% of all insect-related costs and losses in the surveyed states. More than 50% of the acreage was scouted for a fee and more than 50% of …

Screenhouse Transmission Of Beauveria Bassiana From Infected To Non-Infected Adults Of Banana Weevil, C. A. Omukoko, J. M. Wesonga, E. M. Kahangi, L. S. Wamocho, K. N. Maniania

All Peer-Reviewed Publications

Laboratory studies have revealed great potential of entomopathogenic fungus Beauveria bassiana for use against the banana weevil, Cosmopolites sordidus, in banana. Adult banana weevils exposed to wet conidia of Beauveria bassiana suffered high mortalities ranging from 50-70% by 40 days post exposure when a concentration of 1×109 was used in the laboratory with three isolates ICIPE 273, M313 and M207 which were selected on the basis of high virulence against C. sordidus and high sporulation. However, impractical field delivery methods and high costs associated with the application of B. bassiana against C. sordidus prevent its use and commercialisation in banana …

2010 Soybean Insect Losses For Mississippi, Tennessee, And Arkansas, F. R. Musser, G. M. Lorenz, S. D. Stewart, A. L. Catchot Jr.

Midsouth Entomologist

Survey-based soybean insect losses provide a glimpse of current soybean management practices and allow the detection of evolving trends. This survey was initiated in Mississippi in 2004, Tennessee in 2008, and Arkansas in 2009. The 2010 survey shows stink bugs and corn earworm caused similar amounts of damage in the region. Combined, these two insects caused more than half of all insect losses in 2010. Insect scouting and the adoption of seed treatments were at similar levels compared to 2009.

2009 Soybean Insect Losses For Mississippi, Tennessee, And Arkansas, F. R. Musser, G. M. Lorenz, S. D. Stewart, A. L. Catchot Jr.

Midsouth Entomologist

Survey-based soybean insect losses provide a glimpse of current soybean management practices and allow one to see evolving trends. This survey was initiated in MS in 2004, and in Tennessee in 2008. This year is the first year that Arkansas has conducted the survey. The 2009 survey shows stink bugs were the primary pest in all three states, but were less widespread than in 2008. Corn earworm pressure was much higher in 2009 than in previous years. Insect scouting and the adoption of seed treatments continued to increase in 2009.

2008 Soybean Insect Losses For Mississippi And Tennessee, F. R. Musser

Midsouth Entomologist

Survey-based soybean insect losses provide a glimpse of current soybean management practices and allow one to see evolving trends. Continuing a survey begun in 2004 in Mississippi, the 2008 survey showed that seed treatments were used extensively for the first time and soybean acreage monitored by crop scouts continued to increase. Stink bugs (Hemiptera: Pentatomidae) remained the most important pest in Mississippi followed by soybean looper (Lepidoptera: Noctuidae), bean leaf beetle (Coleoptera: Chrysomelidae) and threecornered alfalfa hopper (Hemiptera: Membracidae). In the first year of published losses for Tennessee, economic costs in yield loss plus control costs were greatest for stink …

On-Farm Evaluation Of The 'Push-Pull' Technology For The Control Of Stemborers And Striga Weed On Maize In Western Kenya, Zeyaur R. Khan, Charles A.O. Midega, David M. Amudavi, Ahmed Hassanali, John A. Pickett

All Peer-Reviewed Publications

The 'push-pull' technology is a novel pest management strategy developed for control of stemborers and striga weed, Striga hermonthica, in maize-based farming systems in eastern Africa, where maize is intercropped with desmodium, a forage legume, and Napier grass is planted as a border crop. Desmodium repels stemborer moths while Napier grass attracts them. Desmodium also suppresses the parasitic striga weed through a series of mechanisms ranging from shading to allelopathy through the root system. The technology is currently being disseminated among smallholder farmers in eastern Africa and adoption rates are rising. Our on-station studies have reported efficacy of this technology …

Mississippi Soybean Insect Losses, F. R. Musser, A. Catchot

Midsouth Entomologist

soybean, yield loss, pest management

Thermal Conditioning Of Fifth-Instar Cydia Pomonella (Lepidoptera: Tortricidae) Affects Hsp70 Accumulation And Insect Mortality, X. Yin, S. Wang, J. Tang, J. D. Hansen, S. Lurie

Entomology Papers from Other Sources

Levels of HSP70 protein of fifth-instar codling moth [Cydia pomonella (L.) (Lepidoptera: Tortricidae)] are determined after conditioning at 35 °C for different times and also after recovery at 22 °C. Protein samples from larvae conditioned for different times are separated by sodium dodecyl sulphate-polyacrylamide gel electrophoresis electrophoresis. Sub-lethal thermal conditioning at 35 °C for 40 min, 2, 6 and 18 h induces new protein bands in the extracts from treated codling moth larvae. Immunodetection with an antibody to a heat-inducible HSP70 indicates a stronger reaction after 35 °C for 2, 6 and 18 h than after 35 °C for …

Adult Dispersal Of Ostrinia Nubilalis Hübner (Lepidoptera: Crambidae) And Its Implications For Resistance Management In Bt-Maize, J. A. Qureshi, L. L. Buschman, James E. Throne, S. B. Ramaswamy

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Dispersal of European corn borer, Ostrinia nubilalis Hubner was examined by release and recapture of the dye marked adults and by capture of the feral adults in and around the large 50 ha center pivot irrigated fields of Bacillus thuringiensis (Bt) maize. Pheromone and black light traps were used to catch the adults. In 1999, 15 094 marked males and 7993 marked females were released, and in 2001, 13 942 marked males and 9977 marked females were released. In 1999, maximum mean recapture beyond the release point was 1.95 and 1.67% for males and females, but in 2001, the recapture …

Weevil Management In Orchards And Vineyards Looks Promising, Stewart Learmonth

Journal of the Department of Agriculture, Western Australia, Series 4

Research and monitoring undertaken by Agriculture Western Australia is showing that the management of weevils in Western Australia's orchard crops and vineyards is improving. A number of alternative management strategies are being implemented, and future research will assess the effectiveness of non-chemical approaches to weevil management.

Options For Pest Management In Pastures, Phil Michael, Mike Grimm, Mike Hyder, Peter Doyle

Journal of the Department of Agriculture, Western Australia, Series 4

Redlegged eath mit, blue oat ite, lucern flea and aphids damage pastures across southern Australia, and it has been estimated that they cause annual losses to the Australian wool industry alone of over $200 million.

Redlegged earth mite is without doubt the most serious of the four pests. Peter DoPhil Michael, Mike Grimm, Mike Hyder and Peter Doyle discuss intergrated management options to control these pests.

Alfalfa Consumption By Adult Clover Leaf Weevil (Coleoptera: Curculionidae) And Development Of Injury Equivalents For Stubble Defoliators, Robert K. D. Peterson, Leon G. Higley, Stephen D. Danielson

Department of Entomology: Faculty Publications

Experiments were conducted from 1990 through 1992 to determine consumption rates and feeding duration of adult clover leaf weevils, Hypera punctata (F.), to characterize the injury potential of this species during alfalfa regrowth. Adults were fed for 29 d in 1990 and 18 d in both 1991 and 1992. The mean cumulative consumption per adult was 27.2 ± 1.6 cm² and 92.7 ± 3.5 mg dry weight in 1991 and 24.6 ± 0.9 cm² and 87.5 ± 2.9 mg dry weight in 1992. The mean cumulative consumption pattern was curvilinear for both dry weight and leaf area consumption. …

Pesticide Use On Crops In Nebraska - 1987, Maurice Baker, Nancy Peterson, Shripat T. Kamble

Nebraska Agricultural Experiment Station: Historical Research Bulletins

This is the third and most comprehensive study of pesticide use on crops in Nebraska. The first was completed in 1978 and the second one in 1982. The first study indicated that approximately 25 million pounds (11.34 million kg) of active ingredients were used on the major crops in Nebraska. This increased to approximately 30.2 million pounds (13.7 million kg) in 1982. The USDA requires accurate information to meet their responsibilities. Thus, this survey was undertaken to determine: 1) the use of pesticides on crops, pasture and rangeland and 2) to identify pest management practices.

Alfalfa Insect Management Studies 1971-77, G. R. Manglitz, W. R. Kehr, D. L. Keith, J. M. Mueke, J. B. Campbell, R. L. Ogden, T. P. Miller

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Three tests in southwestern Nebraska during 1971 and 1972 evaluated insecticides against the army cutworm. Adult alfalfa weevils did not damage new second growth alfalfa in a small plot study during a 3-year period (1973-1975) at Gothenburg, NE. However, excellent control of larval alfalfa weevils was obtained. These results indicated a need to establish economic threshold levels for the alfalfa weevil in Nebraska to prevent unnecessary use of insecticides. Four tests to control the alfalfa weevil with registered insecticides verified the efficacy of these materials under Nebraska conditions. A series of tests conducted during 1975 at the Mead Field Laboratory …

Bionomics Of Insects Associated With Corn In The Nebraska Sandhills, J. L. Wedberg, J. B. Campbell, T. J. Helms

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Investigations were conducted in the Nebraska Sandhills to determine the impact of transition from grassland to irrigated corn on selected insect species, to identify indigenous species that may be economically important to corn production, and to provide a point of reference for future development of pest management programs for irrigated corn.