Featured Research

from universities, journals, and other organizations

Digital Images Estimate Canopy Coverage, Light Interception

Date:
February 17, 2009
Source:
American Society for Horticultural Science
Summary:
Maximizing leaf growth through light interception is an important consideration when studying different agricultural or environmental factors on crop yield, and it is the main source of data in the most widely used methods for estimating crop water needs. A study looked at how digital images can characterize canopy coverage and light interception in processing tomato crops. Digital images offer a series of advantages over other methods of LI estimation, including the possibility to directly process images by computer using free software.

Canopy light interception (LI) is an important factor for crop growth and fruit yield. Crop yield depends on a canopy's ability to intercept incident solar radiation, which in turn depends on the available leaf area, its structure, and its efficiency in the process of photosynthesis.

Maximizing leaf growth through light interception is an important consideration when studying different agricultural or environmental factors on crop yield, and it is the main source of data in the most widely used methods for estimating crop water needs.

A study conducted by C. Campillo, M.H. Prieto, C. Daza, M.J. Monino, and M.I. Garcia, and published the October 2008 volume of HortScience, looked at how digital images can characterize canopy coverage and light interception in processing tomato crops. Digital images offer a series of advantages over other methods of LI estimation, including the possibility to directly process images by computer using free software.

According to Campillo, "The objectives of the study were to develop a simple, economical method for determining LI in low-lying crops such as processing tomato using digital images obtained with a standard, commercial camera and free software and to evaluate the influence of different types of soil coverage (bare soil and plastic mulch) on canopy light interception."

The resulting images were processed and analyzed using the free software GIMP 2.2 and IMAGE J. Three different methods were used in the analysis: soil area (SA), soil contour (SC) and reclassification (SR), in order to quantify the percentage of groundcover (PGC). A close relationship between LI and estimated PGC was found with all three methods and for different soil cover regimes.

Many practical advantages to the methods were found. Most important, stated the researchers, measurements using a digital camera can be taken at any time of day, and bright sunshine is not necessary. In contrast, another common method that uses active radiation bars for measurement must be taken at solar noon and requires bright sunlight for accurate results.


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. Campillo, C., Prieto, M.H., Daza, C., Monino, M.J., Garcia, M.I. Using Digital Images to Characterize Canopy Coverage and Light Interception in a Processing Tomato Crop. HortScience, 2008 43: 1780-1786

Cite This Page:

American Society for Horticultural Science. "Digital Images Estimate Canopy Coverage, Light Interception." ScienceDaily. ScienceDaily, 17 February 2009. <www.sciencedaily.com/releases/2009/02/090217141421.htm>.
American Society for Horticultural Science. (2009, February 17). Digital Images Estimate Canopy Coverage, Light Interception. ScienceDaily. Retrieved April 20, 2014 from www.sciencedaily.com/releases/2009/02/090217141421.htm
American Society for Horticultural Science. "Digital Images Estimate Canopy Coverage, Light Interception." ScienceDaily. www.sciencedaily.com/releases/2009/02/090217141421.htm (accessed April 20, 2014).

Share This



More Plants & Animals News

Sunday, April 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Mich. Boy Unearths 10,000-Year-Old Mastodon Tooth

Mich. Boy Unearths 10,000-Year-Old Mastodon Tooth

Newsy (Apr. 20, 2014) A 9-year-old Michigan boy was exploring a creek when he came across a 10,000-year-old tooth from a prehistoric mastodon. Video provided by Newsy
Powered by NewsLook.com
Vermont Goat Meat Gives Refugees Taste of Home

Vermont Goat Meat Gives Refugees Taste of Home

AP (Apr. 18, 2014) Dairy farmers and ethnic groups in Vermont are both benefiting from a unique collaborative effort that's feeding a growing need for fresh and affordable goat meat. (April 18) Video provided by AP
Powered by NewsLook.com
Man Claims He Found Loch Ness Monster With... Apple Maps?

Man Claims He Found Loch Ness Monster With... Apple Maps?

Newsy (Apr. 18, 2014) Andy Dixon showed the Daily Mail a screenshot of what he believes to be the mythical beast swimming just below the lake's surface. Video provided by Newsy
Powered by NewsLook.com
First Ever 'Female Penis' Discovered In Animal Kingdom

First Ever 'Female Penis' Discovered In Animal Kingdom

Newsy (Apr. 18, 2014) Not only are these newly discovered bugs' sex organs reversed, but they also mate for up to 70 hours. 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:
from the past week

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