Featured Research

from universities, journals, and other organizations

Alternatives to ozone-depleting pesticide studied

Date:
May 8, 2008
Source:
American Society for Horticultural Science
Summary:
In 2000, the widely used pesticide methyl bromide was classified as an ozone-depleting substance, and in 2005 MB was banned in the United States and all European Union countries. In response to the need for safe and effective alternatives to methyl bromide, researchers undertook a three-year project to study new methods of weed control in strawberry nurseries.

Methyl bromide, an odorless, colorless gas used as an agricultural pesticide, was introduced in the 1980s as an effective way to control weeds and increase fruit yields. Agricultural production nurseries around the world relied on methyl bromide (MB) to produce healthy plants for export and domestic sales. In 2000, the widely used pesticide was classified as an ozone-depleting substance, and in 2005 MB was banned in the United States and all European Union countries.

Related Articles


In response to the need for safe and effective alternatives to methyl bromide, researchers at the Instituto Tecnologico Agrario de Castilla y Leon in Valladolid, Spain, undertook a 3-year project to study new methods of weed control in strawberry nurseries.

According to lead researcher Eva García-Méndez, "the phaseout of methyl bromide requires effective alternatives for soil disinfestation, particularly in high-elevation strawberry nurseries." In the study, MB alternatives were evaluated for weed control and plant yields at strawberry nurseries participating in Spain's Methyl Bromide Alternatives Project (INIA). Two types of field trials were carried out: replicated experiments and commercial-scale field demonstrations.

In the replicated experiments eight fumigant treatments were evaluated each year, including the nonfumigated control and commercial standard methyl bromide plus chloropicrin mixture. Other treatments evaluated included: dazomet, chloropicrin alone, metam sodium plus chloropicrin, chloropropene:chloropicrin, DMDS plus chloropicrin, and propylene oxide. The best alternative treatments from the replicated experiments were then tested in the demonstration phase of the project.

The researchers discovered that several of the chemical alternatives they evaluated controlled weeds as consistently as MB, but all of the alternatives studied were less consistent than MB in terms of plant yields. They also found that the use of some types of barrier films increased the performance and consistency of alternative pesticides and that environmental factors such as weather, soils, and rotational crops contributed to inconsistencies in weed control and runner yields at high-elevation nurseries.

In summary, García-Méndez stated: "Replacements for methyl bromide will require more than one fumigant component as well as a higher level of management of pest populations in the fields during rotational crop production. It is necessary to continue evaluation of alternative fumigants for strawberry nurseries to focus on commercial field-scale demonstrations. Moreover, European Union regulatory restrictions may require the use of non-chemical alternatives in the near future. The need for evaluations of chemical and non-chemical soil disinfestation methods is urgent."


Story Source:

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


Journal Reference:

  1. Garcia-Mendez, Eva, Garcia-Sinovas, David, Becerril, Maximo, De Cal, Antoneta, Melgarejo, Paloma, Martinez-Treceno, Anselmo, Fennimore, Steven A., Soria, Carmen, Medina, Juan J., Lopez-Aranda, Jose M. Chemical Alternatives to Methyl Bromide for Weed Control and Runner Plant Production in Strawberry Nurseries. HortScience, 2008; 43: 177-182 [link]

Cite This Page:

American Society for Horticultural Science. "Alternatives to ozone-depleting pesticide studied." ScienceDaily. ScienceDaily, 8 May 2008. <www.sciencedaily.com/releases/2008/05/080507132825.htm>.
American Society for Horticultural Science. (2008, May 8). Alternatives to ozone-depleting pesticide studied. ScienceDaily. Retrieved October 26, 2014 from www.sciencedaily.com/releases/2008/05/080507132825.htm
American Society for Horticultural Science. "Alternatives to ozone-depleting pesticide studied." ScienceDaily. www.sciencedaily.com/releases/2008/05/080507132825.htm (accessed October 26, 2014).

Share This



More Plants & Animals News

Sunday, October 26, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Deep Sea 'mushroom' Could Be Early Branch on Tree of Life

Deep Sea 'mushroom' Could Be Early Branch on Tree of Life

Reuters - Innovations Video Online (Oct. 24, 2014) — Miniature deep sea animals discovered off the Australian coast almost three decades ago are puzzling scientists, who say the organisms have proved impossible to categorise. Academics at the Natural History of Denmark have appealed to the world scientific community for help, saying that further information on Dendrogramma enigmatica and Dendrogramma discoides could answer key evolutionary questions. Jim Drury has more. Video provided by Reuters
Powered by NewsLook.com
Black Bear Cub Goes Sunday Shopping

Black Bear Cub Goes Sunday Shopping

Reuters - Light News Video Online (Oct. 23, 2014) — Price check on honey? Bear cub startles Oregon drugstore shoppers. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Dances With Wolves in China's Wild West

Dances With Wolves in China's Wild West

AFP (Oct. 23, 2014) — One man is on a mission to boost the population of wolves in China's violence-wracked far west. The animal - symbol of the Uighur minority there - is under threat with a massive human resettlement program in the region. Duration: 00:41 Video provided by AFP
Powered by NewsLook.com
Breakfast Debate: To Eat Or Not To Eat?

Breakfast Debate: To Eat Or Not To Eat?

Newsy (Oct. 23, 2014) — Conflicting studies published in the same week re-ignited the debate over whether we should be eating breakfast. Video provided by Newsy
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:

Strange & Offbeat Stories

 

Plants & Animals

Earth & Climate

Fossils & Ruins

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