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:2/21/2017)... N.Y. and PORTLAND, Ore. ... ) and the Avamere Family of Companies (Avamere Health ... today announced a six-month research study that will apply ... improve eldercare at senior living and health centers. By ... Avamere hopes to gain insights into physical and environmental ...
(Date:2/16/2017)... 16, 2017  Genos, a community for personal ... has received Laboratory Accreditation from the College of ... to laboratories that meet stringent requirements around quality, ... processes. "Genos is committed to maintaining ... We,re honored to be receiving CAP accreditation," said ...
(Date:2/13/2017)...  RSA Conference -- RSA, a Dell Technologies business, ... enhance fraud detection and investigation across digital environments ... & Risk Intelligence Suite. The new platform is ... from internal and external sources as well as ... from targeted cybercrime attacks. "Fraudsters are ...
Breaking Biology News(10 mins):
(Date:2/21/2017)... ... 21, 2017 , ... Cancer diagnostics workflow solution provider Inspirata, ... team to lead the development and commercialization of its Cancer Information Data Trust ... and treatment of cancer. The CIDT addresses the need for curated and structured ...
(Date:2/21/2017)... ... February 21, 2017 , ... ... and manufacturing solutions for original equipment manufacturers (OEMs) , today announced it has ... Technologies’ third consecutive year winning in its category of electronics manufacturing services (EMS) ...
(Date:2/21/2017)... , February 21, 2017 ... Technology for Adoption by Plastic Industry  ... STEER, creator ... functionalise materials in the fields of plastics, pharmaceuticals, food and ... with Merck, a leading science & technology company, on ...
(Date:2/20/2017)... , Feb. 20, 2017 /PRNewswire/ - BioAmber Inc. (NYSE: BIOA ... President and CEO and Fabrice Orecchioni, the company,s COO, has been ... COO over the past four years, Fabrice has overseen the construction, ... and the management of the Mitsui JV.  Fabrice has ... the proposed China JV. ...
Breaking Biology Technology: