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FIELD SCIENCE Why measuring ! LIIIMIDNu. u __ „....: _. matters By Dr. Charles F. Mancino, Dr. Charles H. Darrah, Deborah D. Holdren, and Pamela J. Sherratt 1 ■ p r,^ ^I-4i -- e - P^ t A a., x 4 M� Q- CI, 1 mo t="__ .% 4?1 .* {'4r- t" .• !V' ; 1 n rd •ate.*` 44 . -4.v.c---, •f 4 f' v - - .` ( .•6 'T. j• _ C.%s_ d 1:H.*:r� � • i.A: r • t l 1}`t -`Y¢ i ya x i 2. +Y 'j,s•.. p r�t'1, _ (C :7.j ti`s -. -ere .-s. ♦ R i^ u�J v-. ,-FfJ c x H c . :..:2" �. -'^..S.i_r.` �, :, J"-• -,, /n' c "it.i. :.:).;) ii• �1;�� 1 1,r, r . tea@° • �.�� t Ct? Figure LA and 38.Impact tester used for synthetic turf testing(A)and for natural turf and sal testing(B). collision between a player and the playing surface practices ranging from the brushing and grooming of these surfaces A is inevitable in almost every sport. If the field's to the partial or complete replacement of these fields. ability to absorb shock energy is low,then the play- Natural field hardness is reduced through maintaining a healthy •`_' er's body has to absorb more. That's why we test turf stand and thatch layer, adequate soil moisture, and aggressive r felds for surface hardness. core cultivation programs. Eventually either type of playing surface will Hardness measurements help you to identify any foreseeable risk need to be replaced. that might affect your players.and lets you determine if you need to Testing also allows you to track changes in hardness over time and, take action to reduce those risks.Actions for synthetic turf surfaces are for synthetic turf systems, to insure that the field is functioning as still being defined, but synthetic turf managers are using management promised in the manufacturer's warranty. Manufacturers are providing ® 8 May 2006 www.greenmediaonline.com