Navigation Links
Researchers use 'banker plants' to help battle whitefly pests
Date:9/10/2012

This press release is available in Spanish.

A U.S. Department of Agriculture (USDA) scientist is showing growers how to combat whiteflies and other crop pests by using plants as storehouses for predatory insects that can migrate to cash crops and feed on the pests attacking those crops.

Cindy L. McKenzie, an entomologist in the Agricultural Research Service (ARS) Subtropical Insects Research Unit at Fort Pierce, Fla., has done extensive work showing how papaya, corn and ornamental peppers can serve as "banker plants" for a range of insect parasitoids and predators. ARS is USDA's principal intramural scientific research agency, and this research supports the USDA priority of promoting international food security.

Banker plants are considered environmentally friendly because they reduce insecticide use and offer a low-cost, self-perpetuating alternative. The predators eat what they find on the banker plants and then disperse to find targeted pests on cash crops. Before they leave the banker plants, most of the predators will lay eggs on them, which extends the effect into subsequent generations. Lower pesticide use also means pests like spider mites, thrips, and whiteflies are less likely to develop resistance to the pesticides.

Using banker plants is a balancing act. Researchers must select not only the insect predators themselves, but also alternative prey that will keep the predators fed, but won't damage the cash crops. They also need banker plants and predators that will not host or spread diseases to the cash crops.

In a study designed for Florida's greenhouse poinsettia operations, McKenzie worked with entomologist Lance S. Osborne and postdoctoral researcher Yingfang Xiao, both at the University of Florida Mid-Florida Research and Education Center in Apopka. They chose papaya (Carica papaya) for their banker plant, and the tiny non-stinging wasp Encarsia sophia as the predator. The larvae of E. sophia feed on the silverleaf whitefly (Bemisia tabaci), the targeted pest. E. sophia is native to Florida and poses no threat to the state's habitats.

In one set of experiments, they forced the wasps to eat the targeted silverleaf whitefly pest to make sure the wasps would control it. In another, they gave the wasps a choice between the papaya whitefly they supplied as a food source and the targeted silverleaf whitefly they want to eradicate. The results, published in Biological Control, show that E. sophia has an appetite for both the alternative food source and the silverleaf whitefly, and that it effectively wipes out any silverleaf whiteflies on crops near the banker plants. The system is now being tested in commercial greenhouses.

The researchers have also shown that corn can serve as a banker plant for a gall midge that controls the two-spotted spider mite, and they are studying whether ornamental peppers can bank a predatory mite, Amblyseius swirskii, which is effective at controlling whiteflies and thrips. Results so far are extremely promising, and the concept is catching on among growers.


'/>"/>
Contact: Dennis OBrien
dennis.obrien@ars.usda.gov
301-504-1624
United States Department of Agriculture - Research, Education and Economics
Source:Eurekalert

Related biology news :

1. Researchers find first evidence for a genetic cause for Barretts oesophagus
2. CIRM funds 6 UC San Diego stem cell researchers
3. Rice University researchers optimize photoluminescent probes to study DNA and more
4. Researchers identify biochemical functions for most of the human genome
5. NIH-funded researchers restore sense of smell in mice using genetic technique
6. UCLA researchers discover missing link between stem cells and immune system
7. Researchers develop new, less expensive nanolithography technique
8. BUSM researchers find potential key to halt progression, reverse damage from emphysema
9. Researchers launch new Rust-Tracker to monitor deadly wheat fungus in 27 nations
10. University of Tennessee Space Institute researchers make clinical trials a virtual reality
11. New equipment is breath of fresh air for childrens lung researchers
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/19/2017)... ALBANY, New York , April 19, 2017 /PRNewswire/ ... highly competitive, as its vendor landscape is marked by ... in the market is however held by five major ... and Safran. Together these companies accounted for nearly 61% ... majority of the leading companies in the global military ...
(Date:4/11/2017)... 11, 2017 Crossmatch®, a globally-recognized leader ... today announced that it has been awarded a ... Activity (IARPA) to develop next-generation Presentation Attack Detection ... "Innovation has been a driving force within Crossmatch ... allow us to innovate and develop new technologies ...
(Date:4/5/2017)... , April 5, 2017  The Allen Institute ... Allen Cell Explorer: a one-of-a-kind portal and dynamic digital ... 3D imaging data, the first application of deep learning ... human stem cell lines and a growing suite of ... platform for these and future publicly available resources created ...
Breaking Biology News(10 mins):
(Date:5/24/2017)... ... May 24, 2017 , ... ... treasurer for the Mid-Atlantic chapter of the Healthcare Businesswomen’s Association (HBA). ... The HBA Mid-Atlantic chapter board meets in person once each quarter and holds ...
(Date:5/24/2017)... ... May 23, 2017 , ... Federal funding for basic and applied scientific research ... medical and other vital technologies — deserves continued support, say leaders of SPIE, ... community today in responding to the President’s budget request for Fiscal Year 2018. , ...
(Date:5/23/2017)... Toronto, Canada (PRWEB) , ... May 23, 2017 ... ... of Firmex FileSend, a cloud-based file transfer solution that makes it easy for ... firewall without having to worry about cumbersome FTP software or email file size ...
(Date:5/23/2017)... ... May 23, 2017 , ... Genedata, a leading ... marking the occasion with a strong presence at Bio-IT World Conference & Expo ... extends an invitation to all attendees to view posters on the entire ...
Breaking Biology Technology: