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Songul Sever Mutlu and Ece Agan

. 442–445. In: R.A. Larson (ed.). Introduction to floriculture. Academic Press, New York, NY Hammid, M.M. Williams, R.R. 1997 Effect of different types and concentrations of plant growth retardants on Sturt’s desert pea ( Swainsona formmosa ) Sci. Hort

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Nicole L. Waterland, John J. Finer and Michelle L. Jones

transpirational water loss and prevent wilting ( Malladi and Burns, 2007 ). Antitranspirants can be used by producers to prevent wilting and extend the postproduction shelf life and marketability of floriculture crops ( Goreta et al., 2007 ; Martin and Link, 1973

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Chad T. Miller, Neil S. Mattson and William B. Miller

subsequent induced nutrient deficiencies, including Fe. Therefore, a better understanding of a more efficient watering practice would be beneficial. There are a vast number of species and cultivars produced in the floriculture sector, and often times

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Christopher J. Currey, Kellie J. Walters and Kenneth G. McCabe

.J. Lopez, R.G. Krug, B.A. McCall, I. Whipker, B.E. 2012 Substrate drenches containing flurprimidol suppress height of ‘Nellie White’ easter lilies HortTechnology 22 164 168 Dole, J.M. Wilkins, H.F. 2005 Floriculture: Principles and species. 2nd ed. Pearson

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Jonathan M. Frantz

floricultural crops, P supply can influence flowering and plant height. Whitcher et al. (2005) observed increases in plant height and flower number with both new guinea impatiens ( Impatiens hawkeri ) and vinca as P supply and foliar concentrations increased

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Jonathan M. Frantz, Bryon Hand, Lee Buckingham and Somik Ghose

. Sanders M. Greenhouse engineering Natural Resource Agr. Eng. Serv. Publ. 33 Bartok J.W. Jr 2005 Greenhouse management/engineering: Fuels and alternate heat sources for commercial greenhouses 27 Nov. 2009 < http://www.umass.edu/umext/floriculture

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Raymond A. Cloyd, Karen A. Marley, Richard A. Larson and Bari Arieli

.B. Casey, M.L. Grewal, P.S. Lindquist, R.K. 2004 Application rate and timing, potting medium, and host plant effects on the efficacy of Steinernema feltiae against the fungus gnat, Bradysia coprophila , in floriculture Biol

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Robyn L. Cave, Colin J. Birch, Graeme L. Hammer, John E. Erwin and Margaret E. Johnston

Seed germination of Brunonia australis Sm. ex R.Br. and Calandrinia sp. (Mt. Clere: not yet fully classified) was investigated using a thermogradient plate set at different constant temperatures to determine seed propagation requirements of these potential floriculture species. Germination responses were tested at 3, 7, 11, 15, 18, 22, 25, 29, 34, and 38 °C. Germination data were modeled using the cumulative distribution function of the inverse normal, which provides information on lag, rate, and maximum seed germination for each temperature regime. To determine cardinal temperatures, the reciprocal time to median germination (1/t 50) and percentage germination per day were calculated and regressed against temperature. Base temperature estimates for B. australis were 4.9 and 5.5 °C and optimum temperatures were 21.4 and 21.9 °C, whereas maximum temperatures were 35.9 and 103.5 °C, with the latter being clearly overestimated using the 1/t 50 index. Base temperatures for Calandrinia sp. were 5.8 and 7.9 °C, whereas optimum and maximum temperature estimates of 22.5 and 42.7 °C, respectively, were reported using the percentage germination per day index. Maximum seed germination of 0.8 to 0.9, expressed as the probability of a seed germinating, occurred at 11 to 25 °C for B. australis, whereas maximum germination for Calandrinia sp. was 0.5 to 0.7 at 18 to 25 °C. Thermal time, the accumulation of daily mean temperate above a base temperature, was calculated for different germination percentages. Estimates of thermal time (°Cd) for 50% seed germination were 54 and 90 °Cd for B. australis and Calandrinia sp., respectively.

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William H. Carlson

There are over 11,000 greenhouse growers in the United States. Of this number, 8,000 produce less than $500,000 per year in total sales. Less than 1% of the 11,000 have a strategic business plan. Many may have a yearly budget, but they have not developed a formal written analysis of their business in relation to internal and external factors. A sample of 10 growers indicated that their profitability increased significantly when they understood a formal strategic business plan. The information developed from this sample indicates the entire greenhouse industry could benefit greatly from increased use of strategic planning. The marketing component of the business plan and how university personnel can facilitate this effort will be discussed.

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Tim D. Davis, Steven W. George, Wayne A. Mackay and Jerry M. Parsons