@article{cahill_johnson_osmond_hardy_2008, title={Response of corn and cotton to starter phosphorus on soils testing very high in phosphorus}, volume={100}, ISSN={["0002-1962"]}, DOI={10.2134/agronj2007.0202}, abstractNote={Phosphorus from agricultural lands poses a problem in water resources. In 2003, more than 48% of soil samples submitted to the North Carolina Department of Agriculture and Consumer Services (NCDA&CS) soil testing laboratory tested very high in soil P (>120 mg dm -3 P). As soil test P increases, off-site P loss increases, through erosion, soluble P runoff, or leaching. On soils testing above high soil test P (60-120 mg dm -3 P), studies from the northeast and midwest United States demonstrate that no corn (Zea mays L.) or cotton (Gossypium spp.) yield response from additional fertilizer is expected. However, there have been limited studies on the effects of starter-P fertilizer on soils with very high P status in North Carolina and the southeast. Therefore, we undertook a study in the three physiographic regions (coastal plain, piedmont, and mountains) of North Carolina to determine if the use of starter-P fertilizer would affect the growth of corn and cotton on soils having very high soil test P. Treatments were starter N and P, and starter N only. Treatment differences were not observed for corn, while the N-only treatment had greater tissue N than the N- and P-starter treatment in Piedmont cotton. Additionally, the use of only starter-N is typically more cost effective than using both N and P starter fertilizer. For production, environmental, and economic reasons, starter-P fertilizer is not warranted on North Carolina fields with very high soil test P values.}, number={3}, journal={AGRONOMY JOURNAL}, author={Cahill, Sheri and Johnson, Amy and Osmond, Deanna and Hardy, David}, year={2008}, pages={537–542} }
 @article{johnson_harms_levine_law_2006, title={A quantitative real-time RT-PCR assay to measure TGF-β mRNA and its correlation with hematologic, plasma chemistry and organo-somatic indices responses in triamcinolone-treated Atlantic menhaden, Brevoortia tyrannus}, volume={30}, ISSN={0145-305X}, url={http://dx.doi.org/10.1016/j.dci.2005.06.021}, DOI={10.1016/j.dci.2005.06.021}, abstractNote={A quantitative real-time reverse transcription polymerase chain reaction (RT-PCR) assay was developed to measure transforming growth factor-beta (TGF-beta) in Atlantic menhaden (Brevoortia tyrannus), an estuarine-dependent species plagued by ulcerative skin lesions in the estuaries along the eastern United States. Atlantic menhaden were acclimated in a closed system for two weeks prior to initiation of the study. The synthetic glucocorticoid, triamcinolone acetonide (10mg/kg body weight) was administered by intracoelomic injection and its effect on the splenic mononuclear cell TGF-beta mRNA transcription, liver-somatic index, spleno-somatic index, hematology, and plasma chemistry were compared to untreated fish at 48 and 96h post-treatment. Triamcinolone-treated Atlantic menhaden showed suppression of TGF-beta mRNA production, neutrophilia, monocytosis, lymphopenia, and an increase in blood glucose concentrations. The health indices used in this study may help us interpret some of the changes observed during the development of ulcerative skin lesions in wild-caught menhaden.}, number={5}, journal={Developmental & Comparative Immunology}, publisher={Elsevier BV}, author={Johnson, A.K. and Harms, C.A. and Levine, J.F. and Law, J. McHugh}, year={2006}, month={Jan}, pages={473–484} }
 @article{hood_johnson_2000, title={Age, growth, mortality, and reproduction of red porgy, Pagrus pagrus, from the eastern Gulf of Mexico}, volume={98}, number={4}, journal={Fishery Bulletin (Washington, D.C.)}, author={Hood, P. B. and Johnson, A. K.}, year={2000}, pages={723–735} }
 @article{hodd_johnson_1999, title={Age, growth, mortality, and reproduction of vermilion snapper, Rhomboplites autorubens, from the eastern Gulf of Mexico}, volume={97}, number={4}, journal={Fishery Bulletin (Washington, D.C.)}, author={Hodd, P. B. and Johnson, A. K.}, year={1999}, pages={828–841} }
 @article{johnson_thomas_wilson_1998, title={Seasonal cycles of gonadal development and plasma sex steroid levels in Epinephelus morio, a protogynous grouper in the eastern Gulf of Mexico}, volume={52}, ISSN={["0022-1112"]}, DOI={10.1006/jfbi.1997.0598}, abstractNote={In a field population of the protogynous red grouper Epinephelus morio in the eastern Gulf of Mexico, females with oocytes at all stages of development were collected during the spawning season suggesting that several batches of oocytes may be released over the spawning period. Plasma oestradiol (E2) levels were highest in ripe females whose gonads contained both cortical alveoli and vitellogenic oocytes during the breeding season. Males were still spermiating as late as August, although levels of androgens 11-ketotestosterone (11-KT) and testosterone (T) had declined from their peaks in March. A few red grouper with either perinucleolar or cortical alveoli stage oocytes were undergoing sex change both during and after the spawning period. Low levels of E2, T and 11-KT were detected in transitionals. Proliferation of male tissue was not restricted to any specific area of the gonad but occurred in pockets within the ovarian lumen. The sequence of an increase in gonial cells along the periphery of the lamellae, increase in interstitial tissue, degradation of female elements, and formation of a sperm duct seemed to be concurrent with spermatocyte proliferation and the process of preparing the gonad to function as a testis.}, number={3}, journal={JOURNAL OF FISH BIOLOGY}, author={Johnson, AK and Thomas, P and Wilson, RR}, year={1998}, month={Mar}, pages={502–518} }