@article{krug_whipker_mccall_frantz_2013, title={Elevated relative humidity increases the incidence of distorted growth and boron deficiency in bedding plant plugs}, volume={48}, number={3}, journal={HortScience}, author={Krug, B. A. and Whipker, B. E. and McCall, I. and Frantz, J.}, year={2013}, pages={311–313} }
 @article{currey_lopez_krug_mccall_whipker_2012, title={Substrate drenches containing flurprimidol suppress height of 'Nellie White' Easter lilies}, volume={22}, number={2}, journal={HortTechnology}, author={Currey, C. J. and Lopez, R. G. and Krug, B. A. and McCall, I. and Whipker, B. E.}, year={2012}, pages={164–168} }
 @article{krug_whipker_mccall_cleveland_2010, title={GERANIUM LEAF TISSUE NUTRIENT SUFFICIENCY RANGES BY CHRONOLOGICAL AGE}, volume={33}, ISSN={["0190-4167"]}, DOI={10.1080/01904160903470398}, abstractNote={Two cultivars of geranium (Pelargonium × hortorum) were grown under five different fertilizer regimes, 50, 100, 200, 300, or 400 mg·L−1 nitrogen (N). The two cultivars were chosen to represent a dark-colored leaf cultivar, ‘Tango Dark Red’ and a light-colored leaf cultivar, ‘Rocky Mountain Dark Red’. Tissue samples were collected and analyzed for the content of 11 elemental nutrients every two weeks for a period of 12 weeks. The dark-colored leaf cultivar contained higher nutrient concentrations, with the exception of magnesium, sulfur, iron, and copper, than the light-colored leaf cultivar. Compared to concentrations previously published for geraniums, concentration ranges observed in this study were narrower. In addition, this study accounted for differences in concentrations over the entire crop cycle and reflects levels associated with current fertilization practices.}, number={3}, journal={JOURNAL OF PLANT NUTRITION}, author={Krug, Brian A. and Whipker, Brian E. and McCall, Ingram and Cleveland, Brenda}, year={2010}, pages={339–350} }
 @article{krug_whipker_mccall_2007, title={Caladium growth control with flurprimidol paclobutrazol, and uniconazole}, volume={17}, number={3}, journal={HortTechnology}, author={Krug, B. A. and Whipker, B. E. and McCall, I.}, year={2007}, pages={368–370} }
 @article{whipker_mccall_krug_2006, title={Flurprimidol substrate drenches and foliar sprays control growth of 'Blue Champion' exacum}, volume={16}, ISSN={["1063-0198"]}, DOI={10.21273/horttech.16.2.0354}, abstractNote={Flurprimidol was applied as a foliar spray (12.5, 25.0, 37.5, 50.0, or 62.5 mg·L-1) or as a substrate drench (0.015, 0.03, 0.06, 0.12, or 0.24 mg/pot a.i.) to determine its efficacy on `Blue Champion' exacum (Exacum affine). Flurprimidol substrate drenches were more consistent in controlling plant growth than foliar sprays. Substrate drenches of 0.03 mg/pot a.i. or foliar sprays ≥50 mg·L-1 resulted in smaller plant heights and diameters than the untreated control. With the use of flurprimidol, exacum growers have another plant growth regulator (PGR) available to control excessive growth.}, number={2}, journal={HORTTECHNOLOGY}, author={Whipker, BE and McCall, I and Krug, BA}, year={2006}, pages={354–356} }
 @article{krug_whipker_mccall_2006, title={Hyacinth height bulb soaks of control using preplant flurprimidol}, volume={16}, ISSN={["1943-7714"]}, DOI={10.21273/horttech.16.2.0370}, abstractNote={Eight experiments were conducted to develop height control protocols for greenhouse-forced hyacinth (Hyacinthus orientalis) bulbs. `Pink Pearl' hyacinth bulbs were treated with flurprimidol preplant bulb soaks to determine optimal timing of treatment, soak duration, quantity of bulbs that could be treated before the solution lost efficacy, bulb location of solution uptake, and if higher concentrations of flurprimidol can be used to overcome stretch that occurs with extended cold treatment. No difference in height control occurred when bulbs were soaked in flurprimidol the day of, 1 day before, or 7 days before potting; therefore, growers can treat bulbs up to 1 week before potting with no difference in height control. All preplant bulb soak durations of 1, 5, 10, 20, or 40 min controlled plant height. Any soak durations ≥1.3 min resulted in similar height control, which would provide growers with a flexible time frame of 2 to 40 min in which to soak the bulbs. When 1 L of 20 mg·L-1 flurprimidol solution was used repeatedly over 20 batches of five bulbs, solution efficacy was similar from the first batch to the last batch, indicating the soak solution of flurprimidol can be used repeatedly without loss of efficacy. Soak solution temperature was also tested to determine its effect on flurprimidol and paclobutrazol uptake. Temperature of the soak solution (8, 16, or 24 °C) had no effect on flurprimidol and only at a temperature of 8 °C was the efficacy of paclobutrazol lower. Postharvest heights of `Pink Pearl' hyacinths were similar whether only the top, bottom, or the entire bulb was soaked. Control provided by flurprimidol, paclobutrazol, or uniconazole preplant bulb soaks varied among the three hyacinth cultivars Delft Blue, Jan Bos, and Pink Pearl, so growers will have to conduct their own trials to determine optimal cultivar response to preplant bulb soaks. Also, `Pacino' sunflowers (Helianthus annuus) were treated with residual soak solution of flurprimidol to determine if substrate drenches could be used as a disposal method. Fresh and residual solutions of flurprimidol (1.18, 2.37, or 4.73 mg/pot a.i.) applied to `Pacino' sunflowers were similar in their efficacy of controlling height, which would enable growers to avoid disposal problems of residual soak solutions.}, number={2}, journal={HORTTECHNOLOGY}, author={Krug, BA and Whipker, BE and McCall, I}, year={2006}, pages={370–375} }
 @article{krug_whipker_mccall_dole_2006, title={Narcissus response to plant growth regulators}, volume={16}, number={1}, journal={HortTechnology}, author={Krug, B. A. and Whipker, B. E. and McCall, I. and Dole, J. M.}, year={2006}, pages={129–132} }
 @article{krug_whipker_mccall_dole_2005, title={Comparison of flurprimidol to ancymidol, paclobutrazol, and uniconazole for tulip height control}, volume={15}, number={2}, journal={HortTechnology}, author={Krug, B. A. and Whipker, B. E. and McCall, I. and Dole, J. M.}, year={2005}, pages={370–373} }
 @article{krug_whipker_mccall_dole_2005, title={Comparison of flurprimidol to ethephon, paclobutrazol, and uniconazole for hyacinth height control}, volume={15}, number={4}, journal={HortTechnology}, author={Krug, B. A. and Whipker, B. E. and McCall, I. and Dole, J. M.}, year={2005}, pages={872–874} }
 @article{krug_whipker_mccall_2005, title={Flurprimidol is effective at controlling height of 'Star Gazer' oriental lily}, volume={15}, number={2}, journal={HortTechnology}, author={Krug, B. A. and Whipker, B. E. and McCall, I.}, year={2005}, pages={373–376} }
 @article{krug_whipker_mccall_dole_2004, title={Controlling stem topple of pot tulips}, volume={49}, number={1}, journal={North Carolina Flower Growers' Bulletin}, author={Krug, B. and Whipker, B. E. and McCall, I. and Dole, J.}, year={2004}, pages={14} }
 @article{krug_whipker_peet_2003, title={FERTCALC -- a fertilizer mixing calculator}, volume={48}, number={6}, journal={North Carolina Flower Growers' Bulletin}, author={Krug, B. A. and Whipker, B. E. and Peet, M.}, year={2003}, pages={8} }