Navigation Links
Landscape change leads to increased insecticide use in the Midwest
Date:7/11/2011

MADISON - The continued growth of cropland and loss of natural habitat have increasingly simplified agricultural landscapes in the Midwest. A Great Lakes Bioenergy Research Center (GLBRC) study concluded that this simplification is associated with increased crop pest abundance and insecticide use, consequences that could be tempered by perennial bioenergy crops.

While the relationship between landscape simplification, crop pest pressure, and insecticide use has been suggested before, it has not been well supported by empirical evidence. This study, published online in the Proceedings of the National Academy of Sciences during the week of July 11, is the first to document a link between simplification and increased insecticide use.

"When you replace natural habitat with cropland, you tend to get more crop pest problems," says lead author Tim Meehan, University of WisconsinMadison associate scientist in the Department of Entomology. "Two things drive this pattern. As you remove natural habitats you remove habitat for beneficial predatory insects, and when you create more cropland you make a bigger target for pests giving them what they need to survive and multiply."

Because landscape simplification has long been assumed to increase pest pressure, Gratton and Meehan were not surprised to find that counties with less natural habitat had higher rates of insecticide use.

One striking finding was that landscape simplification was associated with annual insecticide application to an additional 5,400 square miles in the Midwest an area the size of Connecticut.

Although simplification of agricultural landscapes is likely to continue, the research suggests that the planting of perennial bioenergy crops like switchgrass and mixed prairie can offset some negative effects.

"Perennial crops provide yearround habitat for beneficial insects, birds, and other wildlife, and are critical for buffering streams and rivers from soil erosion and preventing nutrient and pesticide pollution," says Doug Landis, Michigan State University professor of entomology and landscape ecology.

Perennial grasslands that can be used for bioenergy could also provide biodiversity support, specifically beneficial insect support, says Claudio Gratton, UW-Madison professor of entomology.

"If we can create agricultural landscapes with increased crop diversity, then perhaps we can increase beneficial insects, reduce pest pressure and reduce the need for chemical inputs into the environment," he says.

"We are at a junction right now. There is increased demand for renewable energy, and one big question is: where it will come from?" Gratton says. "We hope that these kinds of studies will help us forecast the impacts that bioenergy crops may have on agricultural landscapes."


'/>"/>

Contact: Claudio Gratton
cgratton@wisc.edu
608-265-3762
University of Wisconsin-Madison
Source:Eurekalert

Related biology news :

1. Himalaya -- Changing Landscapes photo exhibition draws attention to the impacts of climate change
2. Diverse landscapes are better: Policymakers urged to think broadly about biofuel crops
3. Traditional Dutch landscape under threat
4. Diverse landscapes are better: Policymakers urged to think broadly about biofuel crops
5. Landscape-scale treatment promising for slowing beetle spread
6. After mastodons and mammoths, a transformed landscape
7. Conservation from space: Landscape diversity helps to conserve insects
8. The effect of landscape position on biomass crop yield
9. Planting depth affects popular landscape tree
10. New hydrangea cultivars for landscape gardens
11. Santa Fe homeowners weigh in on landscape preferences
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/15/2016)... , April 15, 2016 ... "Global Gait Biometrics Market 2016-2020,"  report to their ... ) , ,The global gait biometrics market ... 13.98% during the period 2016-2020. Gait ... which can be used to compute factors that ...
(Date:3/31/2016)... 31, 2016   ... the "Company") LegacyXChange is excited to release ... soon to be launched online site for trading 100% ... ) will also provide potential shareholders a sense of ... to an industry that is notorious for fraud. The ...
(Date:3/23/2016)... March 23, 2016 ... Sicherheit Gesichts- und Stimmerkennung mit Passwörtern ... (NASDAQ: MESG ), ein führender Anbieter ... Unternehmen mit SpeechPro zusammenarbeitet, um erstmals dessen ... wird die Möglichkeit angeboten, im Rahmen mobiler ...
Breaking Biology News(10 mins):
(Date:4/27/2016)... MIAMI (PRWEB) , ... April 27, 2016 , ... ... joined the GSCG Advisory Board. Ross is the founder of GSCG affiliate Kimera Labs ... of Miami, where he studied hematopoietic stem cell transplantation for hematologic disorders and the ...
(Date:4/27/2016)... , April 27, 2016 MedDay, a ... today announces the appointment of Catherine Moukheibir as Chairman of ... previous Chairman, Jean Jacques Garaud , who contributed to ... is effective immediately. Catherine started her career in ... and London .  She held C-Suite ...
(Date:4/26/2016)... ... 27, 2016 , ... Cameron Cushman has joined ... in the firm’s Intellectual Property practice group. , Clients turn to Cushman for ... has an electrical engineering and computer engineering background, and experience in the medical ...
(Date:4/26/2016)... ... 2016 , ... The European Patent Office (EPO) today announced that ... for the European Inventor Award 2016 in the category "Non-European countries." The winners of ... ceremony in Lisbon on June 9th. , The human capacity to walk with fluidity ...
Breaking Biology Technology: