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SCRI Project References


Bussan, A.J. 2005. Early Maturing Tomato Varieties for Wisconsin Fresh Market Producers. Department of Agriculture, Trade and Consumer Protection Division of Agricultural Development, Agricultural Development and Diversification Program (ADD) Grant Project Final Report. December 31. Available: Last accessed: March 23, 2009.

Cantliffe, D.J., Shaw, N.L. and Jovicich, E. 2004. New vegetable crops for greenhouse in the southeastern United States. Acta Hort. (ISHS) 633:483–487.

Hancock, J.F., 1999. Strawberries. CABI Publishing, New York.

Redman, C.E., King, E.P., and Brown, I.F. 1969. Tables for converting Barratt and Horsfall Rating scores to estimated mean percentages. Mimeo, unnumbered. Elanco Products Co., Indianapolis, IN. 8 pp.

Wallace, R.W. and Petty, A.K., 2007. Texas High Plains fresh market tomato variety trial: 2007. In: Texas High Plains Vegetable & Weed Control Research Program: Research Summary Results. Texas Cooperative Extension. pp. 36–37.


Conner, D., 2008. Does year-round hoop-house production pencil out? Presented at the Oregon State University Extension Small Farms Conference , Corvallis. February 16.

Eidman, V., Hallam, A., Morehart, M., and Klonsky, K. 1998. Commodity Cost and Returns Estimation Handbook: A Report of the AAEA Task Force on Commodity Costs and Returns. Applied Agricultural Economics Association. Ames, Iowa.

Gerber, J.M., Brown, J.E., and Splittstoesser, W.E., 1983. Economic evaluation of plastic mulch and row tunnels for use in muskmelon production. Procedures of the National Agriculture Plastics Congress 17:46-50.

Goodstein, E., 2008. Economics and the Environment. (5th ed.). John Wiley & Sons, Inc., Hoboken, New Jersey.

Kwabiah, A.B., 2004. Economic evaluation of production methods for sweet corn in a cool climate. Journal of vegetable crop production 10:73-87.

Park, J. and Simpson, T.W., 2005. Development of a production cost estimation framework to support product family design. International Journal of Production Research 43:731- 772.

Waterer, D., 2003. Yields and economics of high tunnels for production of warm-season vegetable crops. HortTechnology 13:339-343.


Azzarello, M. and Van Vleet, E., 1987. Marine birds and plastic pollution. Marine Ecology – Progress Series 37:295–303.

Cole, M.A. and Leonas, K.K., 1991. Degradability of yard waste collection bags. Biocycle, Vol.32, 1991, P 56–57, 60, 62–63. Biocycle 32:56–57, 60, 62–63.

Dell, K., Going green: the promise and pitfalls of bioplastic. TIME, May 3, 2010:49–50.

Hakkarainen et al., 2000. Rapid (bio)degradation of polylactide by mixed culture of compost microorganisms – low molecular weight products and matrix changes. Polymer 41:2331–2338.

Kim, D.Y. and Rhee, Y.H., 2003. Biodegradation of microbial and synthetic polyesters by fungi. Applied Microbiology and Biotechnology 61:300–308.

Kim, S. and Dale, B.E., 2005. Life cycle assessment study of biopolymers (Polyhydroxyalkanoates) derived from no-tilled corn. International Journal of Life Cycle Assessments 10:200–210.

Le, P., Tiny plastic particles an emerging ocean concern. Skagit Valley Herald, June 13, 2010:A5.

Lemieux, P.M. 1997. Evaluation of emissions from the open burning of household waste in barrels. U.S. EPA. EPA-600/R-97-134a. 79 pp.

Leonas, K.K., Cole, M.A., and Xiao, X.Y., 1994. Enhanced degradable yard waste collection bag behavior in a field-scale composting environment. Journal of Environmental Polymer Degradation 2:253–261.

Leonas, K.K. and Gorden, R.W., 1993. An accelerated laboratory study evaluating the disintegration rates of plastic films in simulated aquatic environments. Journal of Environmental Polymer Degradation 1:45–51.

Levitan, L., 2005. Reducing dioxin emissions by recycling agricultural plastics: Creating a viable alternative to open burning.

Ludwig, W., Strunk, O., Westram, R., Richter, L., and Meier, H., et al., 2004. ARB: a software environment for sequence data. Nucleic Acids Res 32:1363–1371.

Mato, Y., Isobe, T., Takada, H., Kanehiro, H., Ohtake, C., and Kaminuma, T., 2001. Plastic resin pellets as a transport medium for toxic chemicals in the marine environment. Environmental Science and Technology 35.

Tomita, K., Kuraki, Y., and Nagai, K., 1999. Isolation of thermophiles degrading poly (L-lactic acid). Journal of Bioscience and Bioengineering 87:752–755.

Torres, A., Li, S., Roussos, S., and Vert, M., 1996. Screening of microorganisms for biodegradation of poly (lactic acid) and lactic acid-containing polymers. Applied and Environmental Microbiology 652:2393–2397.

Vink, E.T.H., Rabago, K.R., Glassner, D.A., Springs, B., O’Connor, R., Kolstad, J., and Gruber, P., 2004. The sustainability of NatureWorks polylactide polymers and Ingeo polylactide fibers: An update of the future. Macromolecular Bioscience 4:551–564.

High Tunnels

Bachmann, J. 2005. Season extension techniques for market gardeners. Horticulture Technical Note. ATTRA. National Sustainable Agriculture Information Service. 28 pages.

Biernbaum, J. 2002. Greenhouse structures and management. Department of Horticulture curriculum HRT 221, Michigan State University.

Carey, E., Jett, L., Lamont, W., Nennich, T., Orzolek, M., and Williams, K. 2009. Horticultural crop production in high tunnels in the United States: a snapshot. HortTechnology 19:37–43.

Kellogg, W.K. 2004. W.K. Kellogg Foundation logic model development guide. W.K. Kellogg Foundation, Battle Creek, Michigan.

Kleemann, M. 2004. Effect of photoselective plastics on the quality of lettuce. Acta Hort. (ISHS) 633:173–179.

Lament, Jr. W.J. 1993. Plastic mulches for the production of vegetables. HortTechnol. 3:35-39.

Lamont, Jr., W.J. 2003. Production system for horticultural crops grown in the Penn State high tunnel. HortTechnol. 13:358–362.

Lamont, W. 2009. Overview of the use of high tunnels worldwide. HortTechnology 19:25–29.

Walters, T.W., Miles, C., Inglis, D., Tanigoshi, L., Miller, T., Saez, H., and McMoran, D. 2008. High Value Crops under High Tunnels in Western Washington, progress report.

Miles, C., Bues, C., Corbin, A., Wallace, R., Wszelaki, A., Saez, H., Walters, T., Leonas, K., Brodhagen, M., Hayes, D., and Inglis, D., 2009. Research and extension priorities to ensure adaptation of high tunnels and biodegradable plastic mulch in the United States, Agricultural Plastics Congress, July 13–16, College Station, Pennsylvania.

Wittner, S.H. 1993. World-wide use of plastics in horticulture production. HortTechnol. 3:6-19.

Extension Publications

Wind is perhaps the biggest challenge with high tunnels. The following are links providing information on how to prevent damage and some presentations showing outcomes of damage.


Materials Science

Bligh, E. and Dyer, W., 1959. A rapid method of total lipid extraction and purification. Can. J. Biochem. Physiol.:911–917.

Borneman, J. and Hartin, J.R., 2000. PCR primers that amplify fungal rRNA genes from environmental samples. Applied and Environmental Microbiology 66:4356–4360.

Braun, B., Dorgan, J.R., and Dec, S.F., 2006. Infrared spectroscopic determination of lactide concentration in polylactide: An improved methodology. Macromolecules FIELD Full Journal Title:Macromolecules 39:9302–9310.

Chapman, R., 2006. Nonwoven fabrics, staple fibers. Kirk-Othmer Encycl. Chem. Technol. (5th Ed.) FIELD Full Journal Title:Kirk-Othmer Encyclopedia of Chemical Technology (5th Edition) 17:495–518.

Dorgan, J.R., Braun, B., Wegner, J.R., and Knauss, D.M., 2006. Poly(lactic acids): a brief review. ACS Symp. Ser. FIELD Full Journal Title:ACS Symposium Series 939:102–125.

Dorgan, J.R., Janzen, J., Clayton, M.P., Hait, S.B., and Knauss, D.M., 2005. Melt rheology of variable L-content poly(lactic acid). J. Rheol. (N. Y., NY, U. S.) FIELD Full Journal Title:Journal of Rheology (New York, NY, United States) 49:607–619.

Drumright, R.E., Gruber, P.R., and Henton, D.E., 2000. Polylactic acid technology. Advanced Materials 12:1841–1846.

Epps, H. and Leonas, K., 1997. The relationship between porosity and air permeability of woven textile fabrics. Journal of Testing and Evaluation 25:108–113.

Frank, J.A., Reich, C.I., Sharma, S., Weisbaum, J.S., Wilson, B.A., and Olsen, G.J., 2008. Critical evaluation of two primers commonly used for amplification of bacterial 16S rRNA genes. Applied and Environmental Microbiology 74:2461–2470.

Harding, K.G., Dennis, J.S., von Blotnitz, H., and Harrison, S.T.L., 2007. Environmental analysis of plastic production processes: Comparing petroleum-based polypropylene 3 and polyethylene with biologically-based poly-B-hydroxybutyric acid using life cycle analysis. Journal of Biotechnology 130:57–66.

Hayes, D.G., Asplund, A.L., Van Alstine, J.M., and Zhuang, X., 2002. Molecular weight-based fractionation of poly-L and poly-D,L pactic acid via a simple inclusion compound based process. Sep. Sci. Technol 37:769–782.

Hedh, J., Wallander, H., and Erland, S., 2008. Ectomycorrhizal mycelial species composition in apatite amended and non-amended mesh bags buried in a phosphorus-poor spruce forest. Mycological Research 112:681–688.

Kaihara, S., Osanai, Y., Nishikawa, K., Toshima, K., Doi, Y., and Matsumura, S., 2005. Enzymatic transformation of bacterial polyhydroxyalkanoates into repolymerizable oligomers directed towards chemical recycling. Macromolecular Bioscience 5:644–652.

Kapanen, A., Schettini, E., Vox, G., and Itavaara, M., 2008. Performance and environmental impact of biodegradable films in agriculture: A field study on protected cultivation. Journal of Polymers and the Environment 16:109–122.

Khan, A.Y.A., Wadsworth, L.C., and Ryan, C.M., 1995. Polymer-laid nonwovens from poly(lactide) resin. International Nonwovens Journal 7:69–73.

Kijchavengkul, T., Auras, R., Rubino, M., Ngouajio, M., and Fernandez, R.T., 2008. Assessment of aliphatic-aromatic copolyester biodegradable mulch films. Part I: Field study. Chemosphere FIELD Full Journal Title:Chemosphere 71:942–953.

Lamont, W.J., 2005. Plastics: Modifying the microclimate for the production of vegetable Crops. HortTechnology 15:477–481.

Leonas, K.K., 1998. Confocal Scanning Laser Microscopy: A method to evaluate textile structures. American Dyestuff Reporter 18:15–16.

Li, F., Wang, S., Liu, W., and Chen, G., 2008. Purification and characterization of poly (L-lactic acid)-degrading enzymes from Amycolatopsis orientalis ssp. orientalis. FEMS Microbiology Letters 282:52–58.

Liu, W.-T. and Stahl, D.A., 2007. Molecular approaches for the measurement of density, diversity, and phylogeny, p. 139-156. In: Hurst, C. J. (ed.), Manual of Environmental Microbiology, 3rd ed. ASM Press, Washington, D.C.

Lunt, J., 2000. Polylactic acid polymers for fibers and nonwovens. International Fiber Journal 15:48–52.

MacGregor, B.J., Boschker, H.T.S., and Amann, R., 2006. Comparison of rRNA and polar-lipid-derived fatty acid biomarkers for assessment of 13C-substrate incorporation by microorganisms in marine sediments. Applied and Environmental Microbiology 72:5246–5253.

Manefield, M., Whiteley, A.S., Griffiths, R.I., and Bailey, M.J., 2002a. RNA stable isotope probing, a novel means of linking microbial community function to phylogeny. Applied and Environmental Microbiology 68:5367–5373.

Manefield, M., Whiteley, A.S., Ostle, N., Ineson, P., and Bailey, M.J., 2002b. Technical considerations for RNA-based stable isotope probing: an approach to associating microbial diversity with microbial community function. Rapid Communications in Mass Spectrometry 16:2179–2183.

Mori, H., 1999. Simultaneous determination of D-lactic acid and L-lactic acid using a flow system with two enzyme reactors and an octadecylsilica column in one line. Analytical Letters 32:1301–1312.

Moyer, C.L., 2001. Molecular phylogeny: Applications and implications for marine microbiology. Methods in Microbiology:376–394.

Nagahata, R., Sano, D., Suzuki, H., and Takeuchi, K., 2007. Microwave-assisted single-step synthesis of poly(lactic acid) by direct polycondensation of lactic acid. Macromolecular Rapid Communications 28:437–442.

Ohkita, T. and Lee, S.H., 2006. Thermal degradation and biodegradability of poly (lactic acid)/corn starch biocomposites. Journal of Applied Polymer Science 100:3009–3017.

Olewnik, E., Czerwinski, W., Nowaczyk, J., Sepulchre, M.-O., Tessier, M., Salhi, S., and Fradet, A., 2007. Synthesis and structural study of copolymers of L-lactic acid and bis(2- hydroxyethyl terephthalate). European Polymer Journal 43:1009–1019.

Sambrook, J. and Russell, D.W., 2001. Molecular cloning: a laboratory manual. 3rd ed. Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY.

Sawada, K., Urakawa, H., and Ueda, M., 2007. Modification of polylactic acid fiber with enzymatic treatment. Text. Res. J. FIELD Full Journal Title:Textile Research Journal 77:901–905.

Smith, B.R., L.C. Wadsworth, M.G. Kamath, A. Wszelaki and C.E. Sams 2008. Development of next generation biodegradable mulch nonwovens to replace polyethylene plastic. Proceedings of the International Conference on Sustainable Textiles, October 21–24, Wuxi, China. (Invited paper)

Smorada, R.L., 2006. Nonwoven fabrics, spunbonded. Kirk-Othmer Encycl. Chem. Technol. (5th Ed.) FIELD Full Journal Title:Kirk-Othmer Encyclopedia of Chemical Technology (5th Edition) 17:460–494.

Takahashi, Y., Okajima, S., Toshima, K., and Matsumura, S., 2004. Lipase-catalyzed transformation of poly(lactic acid) into cyclic oligomers. Macromolecular Bioscience 4:346–353.

Tan, I.K.P., 2006. Polyhydroxyalkanoates. Kirk-Othmer Encycl. Chem. Technol. (5th Ed.) FIELD Full Journal Title:Kirk-Othmer Encyclopedia of Chemical Technology (5th Edition) 20:249–264.

Vichaibun, V. and Chulavatnatol, M., 2003. A new assay for the enzymatic degradation of polylactic acid. ScienceAsia 29:297–300.

Wadsworth, L.C., A. Wszelaki, D.G. Hayes and B.R. Smith 2009. Development of next generation of biodegradable mulch nonwovens to replace plastic films. Proceedings of the International Nonwovens Technical Conference, Denver, CO. (Abstract)

Wadsworth, L.C., A. Wszelaki, D.G. Hayes and B.R. Smith 2009. Development of enhanced biodegradable mulch nonwovens to replace plastic films. Proceedings of the American Association of Textile Chemists and Colorists International Conference, March 10–12, Myrtle Beach, SC. (Invited paper)

Williams, D.F., 1981. Enzymic hydrolysis of polylactic acid. Engineering in Medicine 10.

Yang, T.H., Kim, T.W., et al. 2010. Biosynthsis of polylactic acid and its copolymers using evolved propionate CoA transferase and PHA synthase. Biotechnology and Bioengineering 105:150–160.


Narayan, R. 2010. Sorting through facts and claims. Bioplastics Magazine, Polymedia Publisher GmbH. 10(1):29–31.

Narayan, R. 2010. Misleading claims and misuse of standards proliferate in the nascent bioplastics industry space. Bioplastics Magazine, Polymedia Publisher GmbH. 10(1):38–41.

Arancibia, R.A. and C. E. Motsenbocker. 2008. Differential watermelon fruit size distribution in response to plastic mulch and spunbonded polyester rowcover HortTechnol. 18: 45–52.

Boyhan, G.E., R. Hicks and C.R. Hill. 2006. Natural mulches are not very effective for weed control in onions. HortTechnol. 16:523–526.

Brandenberger, L.P. and R. Weidenfeld. 1997. Physical characteristics of mulches and their impact on crop response and profitability in muskmelon. HortTechnol. 7:165–169.

Brault, D., K.A. Stewart and S. Jenni. 2002. Optical properties of paper and polyethylene mulches use for weed control in lettuce. HortScience. 37:87–91.

Broschat, T.K. 2007. Effects of mulch type and fertilizer placement on weed growth and soil pH and nutrient content. HortTechnol. 17:174–177.

Brown, J.E., W.D. Goff, J.M. Dangler, W. Hoguland and M.S. West. 1992. Plastic mulch color inconsistently affects yield and earliness of tomato. HortScience 27:1135.

Castoldi, R., Charlo, H.C.O., Ito, L.A. and Braz, L.T. 2008. Effect of plastic film mulch n the production of butterhead lettuce cultivars under protected cultivation. Acta Hort. (ISHS) 767:239–242

Daugovish, O. J. Downer, B. Faber and M. McGriffin. 2007. Weed survival in yard waste mulch. Weed Technol. 21:59–65.

Decoteau, D.R. 2007. Leaf area distribution of tomato plants as influenced by polyethelene mulch surface color. HortTechnol. 17:341–345.

Decoteau, M.J., 1990. Bell pepper plant development over mulches of diverse colors. HortScience 25:460–462.

Forcella, F., S.R. Poppe, N.C. Hansen, W.A. Head, E. Hoover, F. Propsom and J. McKensie. 2003. Biological mulches for managing weeds in transplanted strawberry (Fragaria x ananassa). Weed Technol. 17:782–787.

Greer, L. and Dole, J.M., 2003. Aluminum foil, aluminium-painted, plastic, and degradable mulches increase yields and decrease insect-vectored viral diseases of vegetables. HortTechnology 13:276–284.

Jenni, S., Dubuc, J.F., and Stewart, K.A., 2003. Plastic mulches and row covers for early and midseason crisphead lettuce produced on organic soils. Canadian journal of Plant Science (Revue Canadienne de phytotechnie) 83:921–929.

Jenni, S. D., D. Breult and K.A. Stewart. 2004. Degradable mulches as an alternative for weed control in lettuce produced on organic soils. Acta. Hort. (ISHS) 638:111–118.

Lamont, Jr. W.J. 1993. Plastic mulches for the production of vegetables. HortTechnol. 3:35–39.

Masiunas, J., E. Wahle, L. Barmore and A. Morgan. 2003. A foam mulching system to control weeds in tomatoes and sweet basil. HortTechnol. 13:324–328.

Miles, C., Klinglerk, E., Nelson, L., Smith, T., and Cross, C., 2007. Alternatives to plastic mulch in vegetable production systems. Washington State University Vancouver Research and Extension Unit Report. June 19, 2008,

Munn, D.A., 1992. Comparison of shredded newspaper and wheat straw as crop mulches. HortTechnology 2:361–366.

Martin-Closas, L., M.A. Bach and A.M. Pelacho. Biodegrable mulching in an organic tomato production system. ISHS Acta Hort. (ISHS) 767:239-242.

Ngouagio, M., RAuros, Fernandez, R.T., Rubino, M., J.W. Counts, J., and Kijchavengkul, T., 2008. Field performance of aliphatic-aromatic copolyester BDM mulch films in a fresh market tomato production system. HortTechnology 18:605–610.

Rangarajan, A. and Ingall., B., 2005. Alternative mulch products. Vegetable variety & cultural practices research reports. Department of Horticulture, Cornell University.

Sanchez, E., W.J. Lamont, J., and Orzolek., M.D., 2008. Newspaper mulches for suppressing weeds for organic high-tunnel cucumber production. HortTechnology 18:154–157.

Schogren, R.L. and Hochmuth, R.C., 2004. Field evaluation of watermelon grown on paperpolymerized vegetable oil mulches. HortScience 39:1588–1591.

Shogren, R.L. and M. David. 2006. Biodegrable paper/polymerized vegetable oil mulches for tomato and pepper production. J. Appl. Hort. 8:12–14.

Shogren, R.L. 2000., Biodegrable mulches from renewable resources. J. Sustainable Agric. 16:33–47.

Smith, A., 1931. Effect of paper mulches on soil temperature, soil moisture and yields of certain crops. Hilgardia 6:159–201.

Wadsworth, L.C., Wszelaki, A., Hayes, D.G., and Smith, B.R., 2009. Development of Enhanced Biodegradable Mulch Nonwovens to Replace Plastic Films. AATCC International Conference, Myrtle Beach, SC, March 10–12, 2009.

Wallace, R.W. and Hodges., J.C., 2004. Effects of plastic mulch type on tomato vigor and yield. In: Texas High Plains Vegetable & Weed Control Research Program: Research Summary Results. Texas Cooperative Extension. Page 60.

Warnick, J.P., , C.A. Chase, E.N. Rosskopf, E.H. Simonne, J.M. Scholberg, R.L. Koenig and N.E. Roe. 2006. Weed suppression with hydramulch, a biodegradable liquid paper mulch in development. Renewable Agriculture and Food Systems, 21, pp 216–223.

Waterer, D.R. 2000. Effect of soil mulches and herbicides on production economics of warm season vegetable crops in a cool climate. HortTechnol. 10:154–159.

Weber, C.A. 2003. Biodegradable mulch films for weed suppression in the establishment year of matted-row strawberries. HortTechnol. 13:592–596.

Webster, T.M., 2005. Mulch type affects growth and tuber production in yellow nutsedge (Cyperus esculentus) and purple nutsedge (Cyperus rotundus). Weed Science 53:834–838.

Wyenandt, C.A., J.R. Heckman and N.L. Maxwell. 2008. Pumpkin fruit size and quality improve with leaf mulch. HortTechnol. 18:361–364.

Pest Management

Adcock, C.W., Foshee,W.G. III., Wehtje, G.R., and Gilliam, C.H., 2008. Herbicide combinations in tomato to prevent nutsedge (Cyperus esculentus) punctures in plastic mulch for multicropping systems. Weed Technology 22:136–141.

Aziz, F. and K.A. Stewart. 1994. Effect of spectral qualities of plastic mulch on weed development and growth. HortScience 29:251.

Bonanno, A.R. 1996. Weed management in plasticulture. HortTechnology 6:186–189.

Den, J.F. 1994. Innovative herbicide application methods and their potential for use in the nursery and landscape industries. HortTechnol. 4:345–350.

Dik, A.J. and Wubben, J. 2004. Epidemiology of Botrytis cinerea diseases in greenhouses. Pages 319–333 in Elad, Y., Williamson, B., Tudznski, P., and Delen, N. (eds.), Botrytis: Biology, Pathology and Control. Kluwer Academic Publishers, The Netherlands.

Holmes, G.J. and Kemble, J.M., 2009. Soil Pests: Their detection and control, p. 104–107, Southeastern U.S. Vegetable Crop Handbook 2009.

Horsfall, J.G. and Barratt, R.W. 1945. An improved grading system for measuring plant disease. Phytopathology 35:655.

Inglis, D., Gunderson, B., Miles, C., and Walters, T. 2008. Reduction of late blight caused by Phytophthora infestans on tomato cultivars grown under a high tunnel system. Plant Disease Management Reports. Plant Disease Management Reports.

Jones, J.B., Jones, J.P., Stall, R.E., and Zitter, T.A., 1991. Compendium of Tomato Diseases. APS Press, St. Paul, MN.

Korolev, N., Katan, T., and Elad, Y. 2007. Use of selenate-resistant strains as markers for the spread and survival of Botrytis cinerea under greenhouse conditions. Phytopathology 96:1195–1203.

Magnano di San Lio, G, Cacciola, S. O. and Pane, A. 1999. Race 1,2y of Fusarium oxysporum f.sp. melonis on muskmelon in Sicily. Plant Dis 83:1038.

Monci, F., García-Andrés, S., Sánchez, F., Moriones, E., Espí, E. and Salmerón, A. 2004. Tomato yellow leaf curl disease control with UV-blocking plastic covers in commercial plastic houses of southern Spain. Acta Hort. (ISHS) 633:537–542

Precheur, R., Welty, C., Doohan, D., and Miller, S., 2009. Integrated insect, mite and disease management on vegetable crops, Ohio Vegetable Production Guide Bulletin 672–09.

Shaner, G. and Finney, R.E., 1977. The effect of nitrogen fertilization on the expression of slow-mildewing resistance in Knox wheat. Phytopathology 67:1051–1056.

Xiao, C.L., Chandler, C.K., Price, J.F., Duval, J.R., Mertely, J.C., and Legard, D.E., 2001. Comparison of epidemics of Botrytis fruit rot and powdery mildew of strawberry in large plastic tunnel and field production systems. Plant Disease 85:901–909.

Zitter, T. Online, In High Tunnels, Diseases are What You Make Them.


Kirk, R.E. 1982. Experimental design second edition: Procedures for the behavioral sciences. Wadsworth Inc, Belmont, CA.

Likert, R., 1932. A technique for measurement of attitudes. Archives of Psychology 140.

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Amrhein, C. and Suarez, D.L., 1990. Procedure for determining sodium-calcium selectivity in calcareous and gypsiferous soils. Soil Sci. Soc. Am. J. 54:999–1007.

Andrews, S.S., Karlen, D.L., and Cambardella, C.A., 2004. The soil management assessment Framework: A quantitative soil quality evaluation method.

Bonanomi, G., Chiurazzi, M., Caporaso, S., Del Sorbo, G., Moschetti, G., and Felice, S., 2008. Soil solarization with biodegradable materials and its impact on soil microbial communities. Soil Biology and Biochemistry 40:1989–1998.

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Emerson, D., Rentz, J.A., Lilburn, T.G., Davis, R.E., Aldrich, H., Chan, C., and Moyer, C.L., 2007. A novel lineage of proteobacteria involved in formation of marine Fe-oxidizing microbial mat communities. PLoS One 8:e667.

Kamiya, M., Asakawa, S., and Kimura, M., 2007. Molecular analysis of fungal communities of biodegradable plastics in two Japanese soils. Soil Science and Plant Nutrition 53:568– 574.

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Moore-Kucera, J. and Dick, R.P., 2008. PLFA profiling of microbial community structure and seasonal shifts in soils of a Douglas-fir chronosequence. Microbial Ecology 55:500–511.

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Ramsey, P.W., Rillig, M.C., Feris, K.P., Holben, W.E., and Gannon, J.E., 2006. Choice of methods for soil microbial community analysis: PLFA maximizes power compared to CLPP and PCR-based approaches. Pedobiologia 50:275–280.

Rhoades, J.D., 1996. Salinity, electrical conductivity & dissolved solids, p. 417–435. In: Bartels, J. M. (ed.), Methods of soil analysis. Part3. ASA and SSSA, Madison, WI.

Saponaro, S., Sezenna, E., Innocenti, F.D., Mezzanotte, V., and Bonomo, L., 2008. A screening model for fate and transport of BDM polyesters in soil. Journal of Environmental Management 88:1078–1087.

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