Featured Research

from universities, journals, and other organizations

Impact of pelargonic acid for weed control in yellow squash

Date:
April 28, 2014
Source:
American Society for Horticultural Science
Summary:
The impact of pelargonic acid -- a fatty acid that occurs naturally in plants and animals and is found in many foods -- on weed control efficacy, crop injury, and squash yields of yellow squash has been the focus of a new study. "This research determined that a sequential postdirected application of pelargonic acid at 10-lb/acre in 40-gal/acre can consistently produce satisfactory weed control with low crop injury to produce weed-free equivalent squash yields," the lead author said.

Successful weed control in yellow squash was accomplished with postdirected applications of pelargonic acid.
Credit: Charles Webber, USDA

Growers who produce squash for market are increasingly interested in using more natural herbicides that are also effective in providing season-long weed control, but the options for controlling annual broadleaf weeds in summer squash are currently limited. The authors of a new study say that both organic and conventional producers will benefit from the identification of natural herbicides that effectively provide postemergent weed control. Charles Webber III, Merritt Taylor, and James Shrefler conducted a research study published in HortTechnology to determine the impact of pelargonic acid--a fatty acid that occurs naturally in plants and animals and is found in many foods--on weed control efficacy, crop injury, and squash yields of yellow squash.

Related Articles


"Although pelargonic acid is not listed as a 'certified organic' herbicide, it is seen as a more natural type herbicide for use in sustainable crop production," explained Webber. The researchers designed experiments in which pelargonic acid (PA) was applied to 'Enterprise' yellow squash (unshielded postdirected) at 5-, 10-, and 15-lb/acre. The experiments included an untreated weedy control and an untreated weed-free control. Pelargonic acid was applied in mid-July, and then reapplied eight days later.

Results of the experiments revealed that maximum smooth crabgrass control, broadleaf weed control, and yellow nutsedge control occurred with the 15-lb/acre PA treatment at 9 days after initial spray treatment and 1 day after the sequential treatment. Pelargonic acid at 15-lb/acre provided equal or slightly greater smooth crabgrass and broadleaf control compared with the 10-lb/acre application, and consistently greater control than the 5-lb/acre rate and the weedy control. Pelargonic acid was less effective at controlling yellow nutsedge than smooth crabgrass and broadleaf weeds.

Analyses showed that increasing the PA application rate increased the crop injury rating at 1 and 3 days after each application; maximum squash injury occurred for each application rate at 9 days after treatment. Yield analysis found that the 10-lb/acre PA treatment produced the highest squash yields and fruit number compared with either the 5- or 15-lb/acre rates, and yields and fruit number equivalent to the hand-weeded, weed-free treatment.

"This research determined that a sequential postdirected application of pelargonic acid at 10-lb/acre in 40-gal/acre can consistently produce satisfactory weed control with low crop injury to produce weed-free equivalent squash yields," Webber said.


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. Charles L. Webber III et al. Weed Control in Yellow Squash Using Sequential Postdirected Applications of Pelargonic Acid. HortTechnology, February 2014

Cite This Page:

American Society for Horticultural Science. "Impact of pelargonic acid for weed control in yellow squash." ScienceDaily. ScienceDaily, 28 April 2014. <www.sciencedaily.com/releases/2014/04/140428121247.htm>.
American Society for Horticultural Science. (2014, April 28). Impact of pelargonic acid for weed control in yellow squash. ScienceDaily. Retrieved November 28, 2014 from www.sciencedaily.com/releases/2014/04/140428121247.htm
American Society for Horticultural Science. "Impact of pelargonic acid for weed control in yellow squash." ScienceDaily. www.sciencedaily.com/releases/2014/04/140428121247.htm (accessed November 28, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Friday, November 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Research on Bats Could Help Develop Drugs Against Ebola

Research on Bats Could Help Develop Drugs Against Ebola

AFP (Nov. 28, 2014) In Africa's only biosafety level 4 laboratory, scientists have been carrying out experiments on bats to understand how virus like Ebola are being transmitted, and how some of them resist to it. Duration: 01:18 Video provided by AFP
Powered by NewsLook.com
New Dinosaur Species Found in Museum Collection

New Dinosaur Species Found in Museum Collection

Reuters - Innovations Video Online (Nov. 27, 2014) A British palaeontologist has discovered a new species of dinosaur while studying fossils in a Canadian museum. Pentaceratops aquilonius was related to Triceratops and lived at the end of the Cretaceous Period, around 75 million years ago. Jim Drury has more. Video provided by Reuters
Powered by NewsLook.com
Tryptophan Isn't Making You Sleepy On Thanksgiving

Tryptophan Isn't Making You Sleepy On Thanksgiving

Newsy (Nov. 27, 2014) Tryptophan, a chemical found naturally in turkey meat, gets blamed for sleepiness after Thanksgiving meals. But science points to other culprits. Video provided by Newsy
Powered by NewsLook.com
Classic Hollywood Memorabilia Goes Under the Hammer

Classic Hollywood Memorabilia Goes Under the Hammer

Reuters - Entertainment Video Online (Nov. 26, 2014) The iconic piano from "Casablanca" and the Cowardly Lion suit from "The Wizard of Oz" fetch millions at auction. Sara Hemrajani reports. Video provided by Reuters
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