@article{crozier_havlin_hoyt_rideout_mcdaniel_2009, title={Three Experimental Systems to Evaluate Phosphorus Supply from Enhanced Granulated Manure Ash}, volume={101}, ISSN={["0002-1962"]}, DOI={10.2134/agronj2008.0187x}, abstractNote={Three experimental systems were used to evaluate a new P fertilizer since residual P levels at typical farm sites may make response detection unlikely. The systems were (i) greenhouse with low P soil, (ii) long‐term research sites with preexisting soil P gradients, and (iii) agricultural fields with prior P fertilization based on agronomic recommendations. The new fertilizer (animal waste by‐product, AWP: 5% N, 28% P2O5, 4% K2O, and 1% S) is an enhanced granulated manure ash. Corn (Zea mays L.), wheat (Triticum aestivum L.), and soybean [Glycine max (L.) Merr.] growth, P uptake, and residual soil Mehlich‐3 P were measured with agronomic rates of AWP or triple superphosphate (TSP). Greenhouse corn and wheat P uptake, and soil Mehlich‐3 P increased similarly with either fertilizer at rates equivalent to 0, 10, 20, 40, and 80 kg P ha−1. In long‐term research sites, grain yield increased with P fertilization in 8 of 12 tests, and was greater with TSP than with AWP in 3 of 12 tests. Plant P uptake increased in all 12 tests, and was greater with TSP in 1 of 12 tests. In previously fertilized agricultural fields, soil Mehlich‐3 P, but not yield, increased due to P fertilization. Fertilizer source differences were infrequent and relatively minor, but possibly due to lower water soluble P content of the AWP (70% versus 78% for TSP). Evaluation of such products requires an appropriate experimental system with low P soils that may be difficult to find on typical North Carolina farms.}, number={4}, journal={AGRONOMY JOURNAL}, author={Crozier, C. R. and Havlin, J. L. and Hoyt, G. D. and Rideout, J. W. and McDaniel, R.}, year={2009}, pages={880–888} }
 @article{rideout_overstreet_2004, title={A survey of fertility practices, soil fertility status, and tree nutrient status on eastern North Carolina Christmas tree farms}, volume={35}, ISSN={["0010-3624"]}, DOI={10.1081/CSS-120030348}, abstractNote={Abstract “Choose and cut” Christmas tree production is gaining popularity in North Carolina, as well as the Southeastern United States. There are few recommendations concerning the fertility of Christmas trees except for the large Fraser fir (Abies fraseri) industry in the Appalachian mountain region. Outside of the mountains, Virginia pine (Pinus virginiana), eastern white pine (Pinus strobus), red cedar (Juniperus virginiana), and Leyland cypress (X Cupressocyparis leylandii) are commonly grown as “choose and cut” trees. This study was conducted in the piedmont and coastal plain of North Carolina with the objectives to determine (1) the fertility practices currently being used and (2) the current soil and tissue nutrient status of “choose and cut” Christmas tree fields. A mail survey was used to accomplish the first objective. Twenty farms, selected from survey respondents, were sampled to determine current soil and tissue nutrient status. Soil samples were taken at three depths to 45 cm. Survey data indicated that a wide variety of fertilization materials and practices were being used. Spring applications were somewhat common, but actual time of application varied. Tissue and soil levels of nutrients also varied. There was a poor relationship between soil test nutrient levels and tissue nutrient levels, indicating the need for routine tissue analysis. This study indicated the need for future research and extension programs focusing on eastern Christmas tree fertility. In particular, the survey indicated that Leyland cypress, for which no specific soil fertility recommendations exist, is grown widely enough to merit recommendation development.}, number={5-6}, journal={COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS}, author={Rideout, JW and Overstreet, ALAF}, year={2004}, month={Mar}, pages={631–647} }
 @article{fortnum_rideout_martin_2000, title={Nutrient solution temperature affects Pythium root rot of tobacco in greenhouse float systems}, volume={84}, ISSN={["1943-7692"]}, DOI={10.1094/PDIS.2000.84.3.289}, abstractNote={ Float nutrient solution, soilless media, and ambient temperatures were monitored in two tobacco greenhouses with different heating regimes. Water temperatures at seeding were 11°C in an unheated greenhouse and 17°C in a heated greenhouse. Water temperature differences between greenhouses continued over the duration of seedling production. Media and air temperatures varied diurnally, but not float solution. In a greenhouse float system where water temperatures were constant at 15, 20, 25, or 30°C, seedling disease caused by Pythium myriotylum was correlated with float-water temperature and could be described by quadratic equations (R2 = 0.99) with the lowest level of root necrosis at 15°C. Pythium spp.-infected and noninfected seedlings grown in controlled-temperature water baths were transplanted to the field and evaluated for disease development. Previous infection with P. myriotylum, regardless of float-temperature regime, failed to alter yield, leaf quality, or root necrosis (P = 0.05) in field-grown tobacco. }, number={3}, journal={PLANT DISEASE}, author={Fortnum, BA and Rideout, J and Martin, SB}, year={2000}, month={Mar}, pages={289–294} }
 @article{rideout_gooden_fortnum_1998, title={Influence of nitrogen application rate and method on yield and leaf chemistry of tobacco grown with drip irrigation and plastic mulch}, volume={42}, number={1998}, journal={Tobacco Science}, author={Rideout, J. W. and Gooden, D. T. and Fortnum, B. A.}, year={1998}, pages={46–51} }
 @article{rideout_gooden_1998, title={Phosphorus nutrition of tobacco seedlings grown in greenhouse float culture}, volume={21}, ISSN={["1532-4087"]}, DOI={10.1080/01904169809365405}, abstractNote={Abstract Little work has been done investigating phosphorus (P) nutrition in tobacco seedling production. Three greenhouse experiments were conducted in 1993 and 1994 to determine the influence of P on seedling growth. Treatments consisted of fertilizers containing from 0 to 10% phosphorus. Growth parameters measured in all experiments included seedling dry weight, stem length, and tissue P concentration. Reducing P rate did not affect any growth parameters until the solution nitrogen (N): P ratio became less than 20: 1. The 0 P treatment did not produce any transplantable seedlings in two of three experiments. Final seedling usability was not affected as long as at least a 20: 1: 20 ratio fertilizer was used. Seedling growth in the field, as well as final leaf yield, was not affected by reducing P from 10% to 1%. Data suggest that previous greenhouse fertility recommendations contained excess phosphorus and should be reduced to at least a 20: 5: 20 ratio fertilizer.}, number={2}, journal={JOURNAL OF PLANT NUTRITION}, author={Rideout, JW and Gooden, DT}, year={1998}, pages={307–319} }
 @article{rideout_gooden_1997, title={A Nutrient survey to ascertain fertilization practices in greenhouse seedling production}, volume={26}, number={1997}, journal={Journal of Natural Resources and Life Sciences Education}, author={Rideout, J. W. and Gooden, D.T.}, year={1997}, pages={111–115} }
 @article{rideout_gooden_1997, title={Boron uptake by tobacco seedlings in greenhouse float culture}, volume={41}, number={1997}, journal={Tobacco Science}, author={Rideout, J. W. and Gooden, D.T.}, year={1997} }
 @article{gooden_rideout_alphin_hopkins_1997, title={Effects of ethephon on physical, chemical, and smoke flavor parameters of flue-cured tobacco}, volume={26}, number={1997}, journal={Tobacco Science}, author={Gooden, D. T. and Rideout, J. W. and Alphin, J. G. and Hopkins, J. D.}, year={1997}, pages={32–37} }
 @article{rideout_raper_1994, title={DIURNAL CHANGES IN NET UPTAKE RATE OF NITRATE ARE ASSOCIATED WITH CHANGES IN ESTIMATED EXPORT OF CARBOHYDRATES TO ROOTS}, volume={155}, ISSN={["1058-5893"]}, DOI={10.1086/297156}, abstractNote={The rate of NO<sup>-</sup><sub>3</sub> uptake by soybean (Glycine max [L.] Merrill) roots generally declines during the night in association with progressive depletion of the nonstructural carbohydrate pool in the shoot as well as the concentration of carbohydrates in roots. To determine if NO<sup>-</sup><sub>3</sub> uptake rate changes in response to variations in translocation rate of carbohydrates from shoot to roots per se or to carbohydrate status of the roots, the night period was interrupted with a low light level from incandescent lamps to alter the diurnal pattern of NO<sup>-</sup><sub>3</sub> uptake by roots and export of carbohydrate from shoots of nonnodulated soybean. Depletion of NO<sup>-</sup><sub>3</sub> from replenished, complete nutrient solutions containing 1 mM NO<sup>-</sup><sub>3</sub> was measured by ion chromatography and rates of NO<sup>-</sup><sub>3</sub> uptake were calculated. Changes in export of carbohydrates from shoot to roots during intervals of the night period were calculated as the differences between rates of disappearance in contents of nonstructural carbohydrates and their estimated rates of utilization in shoot respiration and growth. A positive, significant correlation occurred between changes in calculated rates of carbohydrate export from shoots and NO<sup>-</sup><sub>3</sub> uptake rates. Conversely, there was no significant correlation between concentrations of nonstructural carbohydrates in roots and NO<sup>-</sup><sub>3</sub> uptake rates. These results support the hypothesis that carbohydrate flux from shoot to roots has a direct role in regulation of nitrogen uptake by the whole plant.}, number={2}, journal={INTERNATIONAL JOURNAL OF PLANT SCIENCES}, author={RIDEOUT, JW and RAPER, CD}, year={1994}, month={Mar}, pages={173–179} }
 @article{rideout_1991, title={Mechanisms and management of premature flowering in flue-cured tobacco}, volume={51}, number={7}, journal={Dissertation Abstracts International. B, Sciences and Engineering}, author={Rideout, J. W.}, year={1991}, pages={3215} }