Navigation Links
Fight weeds with plant pathogens

Although plant pathogens are typically viewed as detrimental, plant pathologists with the American Phytopathological Society (APS) say plant pathogens may be a successful, eco-friendly tool for managing weeds.

"The use of plant pathogens to suppress weeds is considered as one of the alternative weed control options for areas or production systems where the use of chemical herbicides is not permitted or feasible," said Erin Rosskopf, USDA, Agricultural Research Service, Fort Pierce, FL. "Plant pathogens may also be used when the herbicide selection or usage must be rotated with other control methods in order to prevent the development of resistant weeds or lessen the impact of herbicides on the environment," she said.

Weed management is important due to the amount of damage weeds can cause to agricultural productivity. Weeds can reduce crop yields by as much as 12 percent (causing up to $32 billion in losses), based on the potential value of all U.S. crops of approximately $267 billion/year. Weeds also pose serious ecological problems. Invasive weeds are capable of altering ecosystem processes and displacing native plant and animal species. In addition, weeds serve as reservoirs for plant pathogens that impact crops.

According to Rosskopf, there are two approaches used for managing weeds with plant pathogens-the classical biological control approach and the bioherbicides approach. The classical biocontrol approach uses a pathogen imported from a foreign location to control a native or naturalized weed with minimal technological manipulations.

"Classical biological control using imported pathogens has an overall success rate of 57 percent and has been just as successful as the use of imported insects, with no instances of unexpected or undesirable effects," says Raghavan Charudattan, University of Florida, Gainesville, FL.

The bioherbicide approach utilizes native plant pathogens that are isolated from weeds and are gro wn to produce large numbers of infective propagules (such as spores). Infective propagules are applied at rates that will cause high levels of infection, which will greatly reduce the growth of, or kill the target weed before economic losses are incurred. Annual applications are required since the pathogen does not generally survive between growing seasons. It is estimated that there are more than 200 plant pathogens that have been or are under evaluation for their potential as bioherbicides.
'"/>

Source:American Phytopathological Society


Related biology news :

1. NYU Study Reveals How Brains Immune System Fights Viral Encephalitis
2. Plant Sacrifices Cells to Fight Invaders
3. To Stop Evolution: New Way Of Fighting Antibiotic Resistance Demonstrated By Scripps Scientists
4. Newly Discovered Branding Process Helps Immune System Cells Pick Their Fights
5. Fighting malaria by manipulating mosquitoes sense of smell
6. Study Holds Promise For New Way To Fight HIV
7. Fighting like a girl or boy determined by gene in fruit flies
8. Fighting to keep Darwin in the classroom
9. Fighting influenza & co. with 40,000 blood samples
10. Vineyard weeds found to host Pierces disease of grapes
11. Key molecule in plant photo-protection identified

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:12/15/2016)... and BADEN-BADEN, Germany , December ... leading global financial services provider, today announced an agreement with ... behavioural biometrics, to join forces. The partnership will enable clients ... strategies in compliance with local data protection regulation. ... In order to ...
(Date:12/15/2016)... Advancements in biometrics will radically ... wellbeing (HWW), and security of vehicles by ... vehicles begin to feature fingerprint recognition, iris ... monitoring, brain wave monitoring, stress detection, fatigue ... detection. These will be driven by built-in, ...
(Date:12/12/2016)... CLEVELAND , Dec. 12, 2016  Researchers ... commercial possibilities for graphene by combining the material ... a highly sensitive pressure detector able to sense ... of a small spider.  The ... and can be read here:  http://science.sciencemag.org/content/354/6317/1257 ...
Breaking Biology News(10 mins):
(Date:1/24/2017)...  Asterias Biotherapeutics, Inc. (NYSE MKT: AST), a ... today announced positive efficacy results from the company,s ... additional motor function improvement at 6-months and 9-months ... AIS-A patients with complete cervical spinal cord injuries ... function is critically important to patients with complete ...
(Date:1/24/2017)... USA & Geneva, Switerland (PRWEB) , ... January ... ... to announce the first commercially available malaria Plasmodium falciparum culture panels with standard ... falciparum culture panels, which are available in a range of concentrations from six ...
(Date:1/24/2017)... ... January 23, 2017 , ... Oklahoma City based Sigma Blood ... for the firm’s PERFEQTA software and legacy product QC Manager 2.0. , Sigma ... team at CJBC and thrilled that they have decided to implement PERFEQTA and QC ...
(Date:1/24/2017)... - BioAmber Inc. (NYSE: BIOA ) today announced ... Rodman & Renshaw, a unit of H.C. Wainwright ... representative of several underwriters, under which the underwriters have ... minimum of 2,105,264 shares of common stock of the ... 1,052,632 shares of common stock of the Company with ...
Breaking Biology Technology: