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Fertilizer induced changes in susceptibility to fusiform rust vary among families of slash and loblolly pine

Rowan, S.J.

Phytopathology 67(10): 1280-1284

1977

ISSN/ISBN: 0031-949X
Accession: 005456681
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Effects of fertilization on susceptibility (percent of seedlings infected) to fusiform rust (caused by Cronarium fusiforme) were observed in 11 artificially inoculated families of slash pine [Pinus elliottii var. elliottii] and 7 families and 1 geographic race of loblolly pine [P. taeda]. Fertilization (N + P + K + Fe) increased the susceptibility of all families, but significant family .times. fertilization interactions were found in both loblolly and slash pine. Seedling susceptibility tests in tree improvement programs should include seedlings both fertilized and not fertilized prior to inoculation. The length of the shoot (the assumed infection court), when seedlings were inoculated 8 wk after emergence, was affected significantly by fertilization, family and their interaction. Shoot length was not correlated with the percentage of seedlings that became infected. Thus, susceptibility in young slash and loblolly pine seedlings is not strongly controlled by the size of the infection court.

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Related References

Rowan, S.J. 1978: Number of cotyledons affects susceptibility to fusiform rust within but not among families of slash and loblolly pine Plant Disease Reporter 62(8): 731-734
Rowan, S.J. 1977: Fertilization and inoculum density affect susceptibility to fusiform rust and gall development in slash pine and loblolly pine seedlings Plant Disease Reporter 61(7): 609-612
Kuhlman, E.G.; Powers, H.R.; Pepper, W.D. 1995: Relative fusiform rust resistance of loblolly and slash pine sources and families in Georgia and South Carolina Research Paper Southern Research Station, USDA Forest Service ( SE-291): 12 pp.
Rowan, S.J. 1970: Fusiform rust gall formation and cellulose, lignin, and other wood constituents of Loblolly Pine. Fusiform rust gall and canker formation and phenols of Loblolly Pine. Fusiform rust gall formation and cytokinin of Loblolly Vine Phytopathology 60(8): 1216-1220; 1221-1224; 1225-1226
Walterscheidt, M.J.; Vanarsdel, E.P. 1976: Distribution of fusiform rust on slash pine and loblolly pine in texas Plant Disease Reporter 60(8): 718-720
Schmidt, R.A.; Allen, J.E.; Belanger, R.P.; Miller, T. 1995: Influence of oak control and pine growth on fusiform rust incidence in young slash and loblolly pine plantations Southern Journal of Applied Forestry 19(4): 151-156
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Phelps, W.R. 1974: Evaluation of fusiform rust incidence on Loblolly and Slash Pine in the South Plant Disease Reporter 58(12): 1137-1141
Veal, M.; Blair, R.; Jett, J. 1974: Impact of fusiform rust on pulping properties of young loblolly and slash pine Tappi Forest Biology Conference: 7-58
Rowan, S.; Muse, D. 1981: Latent fusiform rust infections in slash and loblolly pine nursery stock Forest Service general technical report SO United States Southern Forest Experiment Station: 4) 38-40
Snow, G.A.; ]ewell, F.F.; Eleuterius, L.N. 1963: Apparent recovery of slash and loblolly pine seedlings from fusiform rust infection Plant Disease Reporter 47(4): 318-319
Arabatzis, A.; Gregoire, T.; Lenhart, J. 1991: Fusiform rust incidence in loblolly and slash pine plantations in East Texas Southern journal of applied forestry 15(2): 79-84
Squillace, A.E. 1976: Geographic patterns of fusiform rust infection in loblolly and slash pine plantations USDA Forest Service Research Note, Southeastern Forest Experiment Station (SE-232): 4
Dinus, R.J.; Snow, G.A.; Griggs, M.M. 1975: Fusiform rust infection and recovery of slash pine vary with inoculum density Proceedings of the American Phytopathological Society 2: 133
Sluder, E.R. 1977: Fusiform rust in loblolly and slash pine plantations on high-hazard sites in Georgia USDA Forest Service Research Paper, Southeastern Forest Experiment Station (SE-160): 9