Featured Research

from universities, journals, and other organizations

The UV-absorbing net is an ally against pests

Date:
November 7, 2012
Source:
madrimasd
Summary:
Researchers have found that a reduction in the amount of UV light in the environment can reduce the propagation and aphid population density what involves an overuse decline of pesticides.

Colony of Macrosiphum euphorbiae on lettuce.
Credit: Alberto Fereres

Researchers have found that a reduction in the amount of UV light in the environment can reduce the propagation and aphid population density what involves an overuse decline of pesticides.

The use of UV-absorbing covers can reduce the incidence of the potato aphid, M. euphorbiae, on lettuce plants. This is the result found by the group of Integrated Pest Management at the ETS Agronomics engineering of the UPM in collaboration with the group Insects as Vectors of Plant Pathogens of the Instituto de Ciencias Agrarias at the CSIC.

The results suggest that UV-absorbing covers can be considered as relevant tools for the control of integrated aphids in covered crops, thereby enabling us to reduce pesticides applications what can have positive effects on the production cost as well as in the environment and human health.

The Integrated Pest Management (IPM) involves the use of multiple tactics to optimize the control of all types of pests. Among the control tactics that should be developed on IPM are included physical methods that can avoid waste materials and to minimize damage environment.

In this context, the UV-absorbing covers have proved to be helpful to reduce the impact of various insect pests as alphids, waterflies, thrips and moths. In fact, it is known that UV radiation is important in visual signs for the most of insects as they modify their flight and landing behavior.

Aphids are harmful to crops both indoor and outdoor and can cause substantial losses. In particular, Macrosiphum euphorbiae is one of the most harmful aphids in the world, this species can transmits dozens of plant viruses and to colonize many horticultural species.

Therefore, aphid was chosen to assess the effects of UV-absorbing covers on its development and spread. In this case, researchers analyzed whether the UV-absorbing cover (Bionet®) was able to reduce the incidence of the potato aphid (M. euphorbiae) in lettuce crops.

To carry out the present study, they conducted tests for three seasons in lettuce greenhouses, some of the greenhouses were protected with conventional covers and others with Bionet® covers. They artificially infected the greenhouses with aphids. The population was estimated with weekly samplings in all plants.

This population grew exponentially in both environments, but it was significantly lower when aphids were under the UV-absorbing covers. Similarly, life table parameters were reduced under the Bionet® covers in laboratory conditions. In addition, the statistical analysis showed that spatial distribution of aphids decreased in environment poor in UV light.

Therefore, the results indicated that UV-absorbing covers should be considered as an important tool to take into consideration in the integrated control of aphids in indoor crops, to encourage reducing the application of pesticides.

Besides this study, the unit of crop protection at the E.T.S Agronomics engineering of the UPM in collaboration with the group Insects as Vectors of Plant Pathogens at the CSIC have a line of collaboration thanks to national projects to study new aspects such as the effect of UV-absorbing covers over natural enemies of pests and plant viruses.


Story Source:

The above story is based on materials provided by madrimasd. Note: Materials may be edited for content and length.


Journal Reference:

  1. Legarrea, S; Diaz, BM; Plaza, M; Barrios, L; Morales, I; Vinuela, E; Fereres, A.Legarrea. Diminished UV radiation reduces the spread and population density of Macrosiphum euphorbiae (Thomas) [Hemiptera: Aphididae] in lettuce crops. Horticultural Science, 39 (2):74-80; 2012

Cite This Page:

madrimasd. "The UV-absorbing net is an ally against pests." ScienceDaily. ScienceDaily, 7 November 2012. <www.sciencedaily.com/releases/2012/11/121107101713.htm>.
madrimasd. (2012, November 7). The UV-absorbing net is an ally against pests. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2012/11/121107101713.htm
madrimasd. "The UV-absorbing net is an ally against pests." ScienceDaily. www.sciencedaily.com/releases/2012/11/121107101713.htm (accessed July 31, 2014).

Share This




More Plants & Animals News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Visitors Feel Part of the Pack at Wolf Preserve

Visitors Feel Part of the Pack at Wolf Preserve

AP (July 31, 2014) — Seacrest Wolf Preserve on the northern Florida panhandle allows more than 10,000 visitors each year to get up close and personal with Arctic and British Columbian Wolves. (July 31) Video provided by AP
Powered by NewsLook.com
Florida Panther Rebound Upsets Ranchers

Florida Panther Rebound Upsets Ranchers

AP (July 31, 2014) — With Florida's panther population rebounding, some ranchers complain the protected predators are once again killing their calves. (July 31) Video provided by AP
Powered by NewsLook.com
Dangerous Bacteria Kills One in Florida

Dangerous Bacteria Kills One in Florida

AP (July 31, 2014) — Sarasota County, Florida health officials have issued a warning against eating raw oysters and exposing open wounds to coastal and inland waters after a dangerous bacteria killed one person and made another sick. (July 31) Video provided by AP
Powered by NewsLook.com
Raw: Thousands Flocking to German Crop Circle

Raw: Thousands Flocking to German Crop Circle

AP (July 30, 2014) — Thousands of people are trekking to a Bavarian farmer's field to check out a mysterious set of crop circles. (July 30) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



    Save/Print:
    Share:  

    Free Subscriptions


    Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

    Get Social & Mobile


    Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

    Have Feedback?


    Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
    Mobile iPhone Android Web
    Follow Facebook Twitter Google+
    Subscribe RSS Feeds Email Newsletters
    Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins