Navigation Links
Students get a feel for soil-water relationships
Date:8/1/2010

MADISON, WI, August 2nd, 2010 - Using little more than PVC rings, a trashcan, and a scale, students can literally get a feel for soil water retention and field capacity, concepts that are important and useful in fields from farming to engineering.

The demonstration, developed by Adam Howard, Drs. Josh Heitman and Dan Bowman of North Carolina State University, was designed to illustrate concepts that can be difficult for students to visualize and understand, and the equipment for making measurements of these variables is expensive. They report their method in the 2010 Journal of Natural Resources and Life Sciences Education, published by the American Society of Agronomy, the Crop Science Society of America, and the Soil Science Society of America.

The demonstration begins by taping short rings of PVC pipe together into a tall column. That column is then filled with soil and placed in a trashcan, and filling the trashcan with water to saturate the soil column. Saturating the column represents a long, soaking rainfall event.

The column is then removed from the trashcan, and allowed to drain for a day or two. When the excess water in the soil is drained away, the water left is the water contained in the soil at field capacity. Then the rings of the column are separated and the soil in each ring is weighed. As the column is sectioned from the top to the bottom, students are able to feel the differences in the soil water content. The soil is then dried and weighed again to determine the water content in each ring.

The concept of field capacity is one that arises often in soil, crop, and horticultural science disciplines. Field capacity is generally defined as the water content of a soil after free water no longer drains from a thoroughly wetted soil.

Field capacity is generally reported as a single number, which would be the average of the water contents in the rings, but few who use this information know wher
'/>"/>

Contact: Sara Uttech
suttech@sciencesocieties.org
608-268-4948
American Society of Agronomy
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Middle school students co-author research on enzyme for activating promising disease-fighters
2. Students design early labor detector to prevent premature births
3. Tufts graduate students win $10,000 prizes
4. Perceptions of forestry students change through years of study
5. 3 UAB students awarded prestigious Goldwater scholarships
6. Students perceptions of Earths age influence acceptance of human evolution, says U of Minn. study
7. Biochemist researching computer models of protein structure that help high school, college students
8. Oregon State trains graduate students to be better TAs
9. Students learn environmental stewardship, improve science scores
10. UT Southwestern receives $700,000 from HHMI to promote medical education of Ph.D. students
11. K-State receives more than $780,000 to fund graduate students studying ecology, evolution, genomics
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Students get a feel for soil-water relationships
(Date:1/22/2015)... EyeLock, Inc. , a market leader of iris-based identity authentication ... to the new role of Senior Vice President of Mobile ... mobile platforms and wearable solutions for EyeLock,s technologies. Gerber brings ... semiconductor industry to his role at EyeLock, with expertise in ...
(Date:12/24/2014)...  Since its launch in December 2014, the 1U™ ... of trying to remember their usernames and passwords through replacing ... smartphones. To assist people who have struggled to remember usernames ... 1U and focuses on redefining identity, announced today that it ...
(Date:12/22/2014)... 22, 2014 Research and Markets ( ... "The Global Watermarking and Fingerprinting Markets" ... http://photos.prnewswire.com/prnh/20130307/600769 This insight provides ... and fingerprinting markets. Watermarking aims to control and ...
Breaking Biology News(10 mins):EyeLock Names Steve Gerber as Senior Vice President of Mobile and Wearables 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 3The Global Watermarking and Fingerprinting Markets 2
... of prostate cancer in mice and has beneficial effects on ... metabolism, UC Davis and the U.S. Department of Agriculture Western ... study, by Paul Davis, nutritionist in the Department of Nutrition ... the findings today at the annual national meeting of the ...
... Department of Energy (DOE) Joint Genome Institute (JGI) has ... 13th Annual Applied Ergonomics Conference held March 22-25, 2010 ... Improvement Initiatives category, the DOE JGI,s entry is "Empowering ... the DOE JGI program that help promote awareness of ...
... ESA,s TIGER II initiative has selected 20 project proposals ... learn more about the water cycle and to improve ... results and achievements of its precursor TIGER I, which ... to bridge Africa,s water information gap using Earth-observation (EO) ...
Cached Biology News:Walnuts slow prostate tumors in mice 2DOE JGI vying for 2010 Ergo Cup 2ESA's TIGER II to support 20 water projects in Africa 2ESA's TIGER II to support 20 water projects in Africa 3
(Date:1/22/2015)... 22. 2015  Varian Medical Systems (NYSE: VAR ), ... for its commitment to sustainability with inclusion on a prestigious ... highest ranked healthcare equipment company among the Corporate Knights Global ... Economic Forum at Davos, Switzerland . ...
(Date:12/24/2014)... Md. , Dec. 24, 2014  United Therapeutics Corporation ... Inc. (NYSE: MDT ) has submitted a ... Administration (FDA) for the use of Medtronic,s SynchroMed ® ... developed catheter) for use with United Therapeutics, Remodulin ® ...
(Date:12/24/2014)... (PRWEB) December 23, 2014 “Preparative ... Gas, HPLC, Flash), Consumables (Columns, Solvents, Buffers, Valves, ... Food & Agriculture) - Forecasts to 2019” provides ... challenges, opportunities, current market trends, and strategies impacting ...
(Date:12/24/2014)... (PRWEB) December 23, 2014 On Friday, ... 83, the Omnibus and Continuing Resolution Appropriations Act of ... condition eligible to receive funding through the Congressionally Directed ... Defense (DoD). The Hydrocephalus Association (HA), working in conjunction ...
Breaking Biology Technology:Varian Honored Among World's 100 Most Sustainable Corporations 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 3United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 4Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 2Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 3Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 4Rare Brain Condition Now Eligible for Department of Defense Research Dollars 2
... Minimal Effect on Heart Rhythm ... Changes in Schizophrenia Patients, VIENNA, Austria, Oct. 17 ... Organon -- is effective,in treating acute manic episodes associated with bipolar ... this week at,the 20th European College of Neuropsychopharmacology (ECNP) Congress. ...
... PRINCETON, N.J., Oct. 16 Bristol-Myers Squibb,Company (NYSE: ... Food and Drug,Administration (FDA) has granted approval of ... with metastatic or locally,advanced breast cancer in patients ... and capecitabine. The FDA has also granted,approval of ...
... Management Team, ROCKVILLE, Md., Oct. 16 ... company developing,therapeutics for the treatment of cancer and ... has been appointed its Senior Vice,President, Research and ... officer of EntreMed by the Board of Directors, ...
Cached Biology Technology:Organon's Asenapine Further Demonstrates Efficacy in Reducing Mania Symptoms for the Treatment of Bipolar I Disorder 2Organon's Asenapine Further Demonstrates Efficacy in Reducing Mania Symptoms for the Treatment of Bipolar I Disorder 3Organon's Asenapine Further Demonstrates Efficacy in Reducing Mania Symptoms for the Treatment of Bipolar I Disorder 4Organon's Asenapine Further Demonstrates Efficacy in Reducing Mania Symptoms for the Treatment of Bipolar I Disorder 5Organon's Asenapine Further Demonstrates Efficacy in Reducing Mania Symptoms for the Treatment of Bipolar I Disorder 6FDA Approves IXEMPRA(TM) (ixabepilone), a Semi-Synthetic Analog of Epothilone B, for the Treatment of Advanced Breast Cancer 2FDA Approves IXEMPRA(TM) (ixabepilone), a Semi-Synthetic Analog of Epothilone B, for the Treatment of Advanced Breast Cancer 3FDA Approves IXEMPRA(TM) (ixabepilone), a Semi-Synthetic Analog of Epothilone B, for the Treatment of Advanced Breast Cancer 4FDA Approves IXEMPRA(TM) (ixabepilone), a Semi-Synthetic Analog of Epothilone B, for the Treatment of Advanced Breast Cancer 5FDA Approves IXEMPRA(TM) (ixabepilone), a Semi-Synthetic Analog of Epothilone B, for the Treatment of Advanced Breast Cancer 6FDA Approves IXEMPRA(TM) (ixabepilone), a Semi-Synthetic Analog of Epothilone B, for the Treatment of Advanced Breast Cancer 7EntreMed Appoints Senior Vice President of Research and Development 2EntreMed Appoints Senior Vice President of Research and Development 3EntreMed Appoints Senior Vice President of Research and Development 4
... sensitive laser confocal systems designed for rapid ... that meet your expectations, differentiating between a ... the signal on the bottom as well ... for increased sensitivity. Results with VersArray ChipReader ...
Bio-Plex Manager software, version 3.0, 5 license netshare, is a five-user software package that provides access to data from the Bio-Plex suspension array system from a server. This version does not...
... System is an automated multiplexing platform that ... detection, pathogen sequence detection and pharmacogenetics applications. ... applied to an open and flexible electronic ... reused until all tests sites have been ...
... : GeneTraffic is built to be a ... GeneTraffic provides visual and computational tools to ... to analysis. , Data and Project ... the MIAME (Minimum Information About a Microarray ...
Biology Products: