U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 Wind Erosion and Water Conservation Research: Lubbock, TX
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                                    Software
                People

                    Staff Listing
                                    CareersSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Plains Area Lubbock, Texas Cropping Systems Research Laboratory Wind Erosion and Water Conservation Research Research Publications at this Location





- ARS National Programs
- Search for a scientific manuscript
- Search for a research project
- ARS Software
- Programs and Projects
- Collaborations
- Subjects of Investigation
- Publications

Title:   Author  item
                                            Gitz, Dennisitem
                                            Baker, Jeffreyitem
                                            Leiker, Gary
  Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 11/1/2009
                                    Publication  Date: 11/5/2009
                                    Citation: Gitz, D.C., Baker, J.T., Leiker, G.R. 2009. Relating xylem cavitation to transpiration in cotton[abstract]. American Society of Agronomy, Crop Science Society of America, Soil Science Society of America. Pittsburgh, Pennsylvania. November 1-5, 2009. Abstract No. 2009.53716.Interpretive Summary:
                                Technical Abstract: Acoustic emmisions (AEs) from xylem cavitation events are characteristic of transpiration processes. Even though a body of work employing AE exists with a large number of species, cotton and other agronomically important crops have either not been investigated, or limited information exists. A few studies indicate that AE based irrigation control systems may be attainable, but little progress has been made. We describe preliminary greenhouse experiments characterizing the frequency of AEs from cavitation events associated with transpiration in cotton. Glasshouse grown cotton (cvar FM 958) was grown in mini-lysimeters and instrumented with LI-6400 photosynthesis systems and ultrasonic transducers interfaced with a Physical Acoustics Corporation digital signal processing unit. Whole plant transpiration, leaf level gas exchange and ultrasonic acoustic emissions were measured. Results reveal xylem cavitation events associated with increased solar loading and transpiration in the morning. AEs diminished as stomatal conductance decreased limiting transpiration rate. While we were unable to precisely quantify water loss as a function of AEs, this technique shows promise as a refinement of existing irrigation control systems based on canopy temperatures without the need for empirically determined ambient humidity control algorithms.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov