WWW.ABSTRACT.XLIBX.INFO FREE ELECTRONIC LIBRARY - Abstract, dissertation, book

<< HOME
CONTACTS

Pages:     | 1 ||

# «Aquatic Plant Management Barley Straw for Algae Control Carole A. Lembi, Professor of Botany Botany and Plant Pathology, Purdue University E-mail: ...»

-- [ Page 2 ] --

The effectiveness of the straw is reduced by sediments suspended in the water (i.e. “muddy” water). Therefore, a higher dose may be required in “muddy” lakes or lakes with extremely severe algae problems. In these types of lakes, apply 450 pounds per acre (1.7 oz. per 10 square feet), but do not exceed 900 pounds per acre (3.3 oz. per 10 square feet). The decomposition of the straw requires oxygen, and the application of excessive amounts (greater than 900 lbs. per acre) of straw could reduce the oxygen content of the water to levels that stress or kill fish.

Example: Determining the amount of straw required to treat a 5 acre lake.

–  –  –

(2) The selected dose is 225 lbs of straw per acre.

(3) Multiply the area of the lake (in acres) by the amount of straw required per acre to calculate the total amount of straw required to treat the whole lake (5 acres x 225 lbs/acre = 1125 lbs).

(4) To calculate the number to bales needed to treat the lake, divide the total amount of straw required to treat the whole lake by the weight of a single bale of barley straw. For this example, assume one bale weighs 45 pounds. However, the size and weight of bales can be highly variable. It is recommended that the approximate weight of the bales be determined at the time of purchase (1125 lbs ÷ 45 lbs/bale = 25 bales).

–  –  –

How to Apply the Straw (1) The straw bales must first be broken apart. Bales are packed too tightly and do not allow adequate water movement through the straw.

(2) The loose straw should be placed in some form of netting. In larger lakes and ponds, CAPM suggests wrapping the straw in the cylindrical netting commonly used for wrapping Christmas trees (Figure 1). This netting can be used to construct straw-filled tubes (Figure 2) up to 65 feet long that contain about 110 pounds of straw. Loose woven sacks (e.g., onion sacks) can be used in small ponds that require low doses (Figure 3).

Figure 1. For treatments of larger ponds, barley straw can be repacked using a Christmas tree baler to feed the straw into a mesh bag.

Photo courtesy of Steve McComas, Blue Water Science, St. Paul, MN.

–  –  –

Figure 3. For treatments of small ponds, barley straw can be repacked into 50-lb onion mesh bags.

These bags hold about 7 pounds of barley straw. Photo courtesy of Steve McComas, Blue Water Science, St. Paul, MN.

(3) Use floats to suspend the straw-filled netting in the upper three to four feet of the lake. The straw will lose its effectiveness if it sinks below this depth. Water movement near the surface will keep the straw well oxygenated and distribute the growth inhibiting chemical throughout the upper portion of the lake. This ensures that the chemical is produced where the majority of the algae are growing and away from the bottom sediments that will inactivate the chemical. Therefore, it is recommended that floats be inserted inside the netting at the same time the netting is filled with straw. The netting is then anchored into place using rope attached to bricks or concrete-filled buckets.

Where to Apply the Straw

In order to improve the distribution of the growth inhibiting chemical, CAPM recommends placing several small quantities of straw around a lake. Place each net of straw roughly equidistant from other nearby nets and the shore. The placement of the nets does not need to be exact and practical considerations such as corridors for boating and angling may influence the location of the nets. In small ponds, where only one net of straw is required, place the net of straw in the center of the water body.

Sources of Netting

–  –  –

Sources of Cited Research/Information:

(1) Daniel E. Terlizzi, Maryland Sea Grant Extension Program, E-mail: dt37@umail.umd.edu (2) John C. Holz, University of Nebraska, E-mail: jholz@unl.edu (3) Joseph E. Morris, Iowa State University, E-mail: jemorris@iastate.edu (4) Kenneth Langeland, University of Florida, E-mail: kal@gnv.ifas.ufl.edu (5) Stratford Kay, North Carolina State University, E-mail: stratford_kay@ncsu.edu (6) Steve McComas, Blue Water Science, St. Paul, MN, E-mail: mccomas@pclink.com (7) Steve Enger and David Wright, Minnesota Department of Natural Resources, St. Paul, MN, E-mail: steve.enger@dnr.state.mn.us and dave.wright@dnr.state.mn.us

Disclaimer

The author of this publication, the persons cited herein, and Purdue University have provided this information for educational purposes only. In no way should the material be considered legal advice nor is any liability assumed for use of this information. No legal department of any agency has approved the content of this publication.

REVISED: 8/02 It is the policy of the Purdue University Cooperative Extension Service, David C. Petritz, Director, that all persons shall have equal opportunity and access to the programs and facilities without regard to race, color, sex, religion, national origin, age, marital status, parental status, sexual orientation, or disability. Purdue University is an Affirmative Action employer.

–  –  –

Pages:     | 1 ||

Similar works:

«Aufbau und Durchführung von Testexperimenten zur photoakustischen Raman-Spektroskopie Bennet Krasch Bachelorarbeit bei Prof. Dr. G. Drexlin Institut für experimentelle Kernphysik, Fakultät für Physik, Karlsruher Institut für Technologie Korreferent Dr. B. Bornschein Tritiumlabor Karlsruhe, Institut für Technische Physik, Karlsruher Institut für Technologie an der Fakultät für Physik am Karlsruher Institut für Technologie 15. November 2012 KIT  Universität des Landes...»

«Thermo-Mechanical Investigations of Reoxidation-Stable Material Concepts for Solid Oxide Fuel Cells Von der Fakultät für Maschinenwesen der Rheinisch-Westfälischen Technischen Hochschule Aachen zur Erlangung des akademischen Grades eines Doktors der Ingenieurwissenschaften genehmigte Dissertation vorgelegt von Viacheslav Vasechko Berichter: Univ. Prof. Dr.-Ing. L. Singheiser Univ. Prof. Dr.-Ing. T. Beck Tag der mündlichen Prüfung: 15.04.2014 Diese Dissertation ist auf den Internetseiten...»

«GENERAL cAtALoG 2013 2014 Bossier Parish Community College Member of the Louisiana Community and Technical College System General Catalog 2013-2014 Revised 8/12/2013 For admission forms and academic schedules, contact Admissions/Registrar's Office Bossier Parish Community College 6220 East Texas Street Bossier City, Louisiana 71111 318-678-6000 FAX 318-678-6390 www.bpcc.edu Bossier Parish Community College TABLE OF CONTENTS CALENDARS – ACADEMIC YEAR 2013-2014 Administrative Offices General...»

«Lehrstuhl für Genetik der Technischen Universität München The cellular polarity of ENHANCER OF PINOID: underlying factors and its role in the organogenesis of Arabidopsis thaliana Michaela Matthes Vollständiger Abdruck der von der Fakultät Wissenschaftszentrum Weihenstephan für Ernährung, Landnutzung und Umwelt der Technischen Universität München zur Erlangung des akademischen Grades eines Doktors der Naturwissenschaften genehmigten Dissertation. Vorsitzender: Univ.Prof. Dr. A. Gierl...»

«Amusement Park Ride A Major Qualifying Project (MQP) Report Submitted to the Faculty of the WORCESTER POLYTECHNIC INSTITUTE In partial fulfillment of the requirements for the Degree of Bachelor of Science in Mechanical Engineering Submitted By: _ _ _ _ Matthew Bailey Cesar Benoit Eric Eoff Meena Khayami Submitted To: _ Eben Cobb – Project Advisor Mechanical Engineering Department April 30, 2015 Acknowledgements We would like to thank Professor Eben Cobb for the opportunity and for advising us...»

«OPTIMAL PRODUCTION OF POTABLE WATER CASE STUDY: AGONA SWEDRU GHANA WATER COMPANY LIMITED (GWCL) BY NYAME, MOSES (B.Ed. Mathematics) A thesis submitted to the Institute of Distance Learning to the Department of Mathematics, Kwame Nkrumah University of Science and Technology In partial fulfillment of the requirement for the degree of Master of Science Industrial Mathematics September, 2011 DECLARATION I hereby declare that this submission is my own work towards the MSc. And that, to the best of...»

<<  HOME   |    CONTACTS
2016 www.abstract.xlibx.info - Free e-library - Abstract, dissertation, book

Materials of this site are available for review, all rights belong to their respective owners.
If you do not agree with the fact that your material is placed on this site, please, email us, we will within 1-2 business days delete him.