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Biochar for Sand-Based Root-Zone Modification NICK CHRISTIANS SHANE BROKHOFF IOWA STATE UNIVERSITY
BIOCHAR AND TURF Sand-based turfgrass root-zone United States Golf Association (USGA)
BIOCHAR AND TURF turf Sand-based turfgrass root-zone United States Golf Association (USGA)
Why biochar and turf… 4 Root-zone mix Intermediate layer Coarse gravel Drainage tile (USGA, 1993) sand:peat moss 90:10 or 80:20
OBJECTIVES Sand and biochar root-zone mix: soil water retention properties saturated hydraulic conductivity rooting depth of creeping bentgrass (Agrostis stolonifera L.) chemical properties
switchgrass (Panicum virgatum FAST PYROLYSIS Center for Sustainable Environmental Technologies (CSET) at Iowa State University BIOCHAR
Six volume-to-volume mixtures of biochar and sand 7 Treatments Treatment Sand : Char : : : : : : 25
11 K sat of Six Biochar and Sand Treatment Mixtures (n=4)
Leachate –Electroconductivity (EC) –pH –Total organic carbon (TOC) –Nutrient analyses Soil –Nutrient analyses 14 Chemical properties
15 LEACHATE pHpH Biochar percentage (v/v)
Biochar percentage (v/v) LEACHATE P
17 Soil K Biochar percentage (v/v) LEACHATE K
Biochar increases soil water retention Biochar decreases saturated hydraulic conductivity Biochar decreases rooting depth of creeping bentgrass in media containing more than 10% (v/v) biochar Biochar increases leachate EC, TOC; provides essential nutrients 18 Conclusions
Addition 1’s to
Addition Facts = = =
Test B, 100 Subtraction Facts
WEEK 1 You have 10 seconds to name…
25 seconds left….. 24 seconds left….. 23 seconds left…..
Creeping bentgrass growth in sand- based root zones amended with biochar and various composts Steve Vaughn, Dan Dinelli, Martha Vaughan and Steve Peterson.
Jeopardy Topic 1Topic Q 1Q 6Q 11Q 16Q 21 Q 2Q 7Q 12Q 17Q 22 Q 3Q 8Q 13Q 18Q 23 Q 4Q 9Q 14Q 19Q 24 Q 5Q 10Q 15Q 20Q 25 Final Jeopardy.
MULT. INTEGERS 1. IF THE SIGNS ARE THE SAME THE ANSWER IS POSITIVE 2. IF THE SIGNS ARE DIFFERENT THE ANSWER IS NEGATIVE.
SUBTRACTING INTEGERS 1. CHANGE THE SUBTRACTION SIGN TO ADDITION 2. TAKE THE INVERSE OF THE SECOND NUMBER 3. FOLLOW THE RULES FOR ADDITION 4. ADD THE OPPOSITE.
We will resume in: 25 Minutes We will resume in: 24 Minutes.
MULTIPLYING MONOMIALS TIMES POLYNOMIALS (DISTRIBUTIVE PROPERTY)
DIVIDING INTEGERS 1. IF THE SIGNS ARE THE SAME THE ANSWER IS POSITIVE 2. IF THE SIGNS ARE DIFFERENT THE ANSWER IS NEGATIVE.
Past Tense Probe Past Tense Probe – Practice 1 Past Tense Probe – Practice 2.
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Properties of Exponents Examples and Practice. Product of Powers Property How many factors of x are in the product x 3 ∙x 2 ? Write the product as a single.
Lets play bingo!!. Calculate: MEAN Calculate: MEDIAN
FACTORING Think Distributive property backwards Work down, Show all steps ax + ay = a(x + y)
ADDING INTEGERS 1. POS. + POS. = POS. 2. NEG. + NEG. = NEG. 3. POS. + NEG. OR NEG. + POS. SUBTRACT TAKE SIGN OF BIGGER ABSOLUTE VALUE.
Number bonds to 10, = = = = = = = = 10 Making 10, 20 and 100 Adding can be a lot easier.
Year 6 mental test 10 second questions Numbers and number system Numbers and the number system, fractions, decimals, proportion & probability.
TWO STEP EQUATIONS 1. SOLVE FOR X 3. DIVIDE BY THE NUMBER IN FRONT OF THE VARIABLE 2. DO THE ADDITION STEP FIRST.
Year 6 mental test 10 second questions Addition and Subtraction Addition.
Title Subtitle 1. A. B. C. C. * D. Click to try again! INCORRECT.
ALGEBRAIC EXPRESSIONS Step 1 Write down the question Step 2 Plug in the numbers Step 3 Use PEMDAS Work down, Show all steps.
By D. Fisher Geometric Transformations. Reflection, Rotation, or Translation 1.
Year 6 mental test 15 second questions Numbers and number system Numbers and the number system, Measures and Shape.
ABC Technology Project Mrs. Kiddle. ABCs of Technology Word 1 Word 2 Word 3 Word 4 Word 5 Word 6 Word 7 Word 8 Word 9 Word 19 Word 20 Word 21 Word 22.
Squares and Square Root WALK. Solve each problem REVIEW:
Energy & Green Urbanism Markku Lappalainen Aalto University.
GG Consulting, LLC I-SUITE. Source: TEA SHARS Frequently asked questions 2.
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O X Click on Number next to person for a question.
Year 6 mental test 5 second questions Multiplication and Division Tables knowledge.
1 Unit 1 Kinematics Chapter 1 Day
= This is the fact family. You say: 8+3=11 and 3+8= =8 and 11-8=3.
Twenty Questions Subject: Twenty Questions
Chapter 5 Test Review Sections 5-1 through 5-4. Simplify each expression. 1)2) 3)4) 5) 6)
1 Copyright © 2010, Elsevier Inc. All rights Reserved Fig 2.1 Chapter 2.
Business Transaction Management Software for Application Coordination 1 Business Processes and Coordination.
1 1 = = = 18 9 = 30 5 = = 36 9 =
MULTIPLICATION EQUATIONS 1. SOLVE FOR X 3. WHAT EVER YOU DO TO ONE SIDE YOU HAVE TO DO TO THE OTHER 2. DIVIDE BY THE NUMBER IN FRONT OF THE VARIABLE.
1 Chapter 40 - Physiology and Pathophysiology of Diuretic Action Copyright © 2013 Elsevier Inc. All rights reserved.
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