Physiological and foliar injury responses of Prunus serotina, Fraxinus americana, and Acer rubrum seedlings to varying soil moisture and ozone von Schaub, M, Skelly, J.M, Steiner, K.C, Davis, D.D, Pennypacker, S.P, Zhang, J, Ferdinand, J.A, Savage, J.E, Stevenson, R.E

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Influence of light fleck and low light on foliar injury and physiological responses of two hybrid poplar clones to ozone von Wei, C., Skelly, J.M., Pennypacker, S.P., Ferdinand, J.A., Savage, J.E., Stevenson, R.E., Davis, D.D.

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Appressorium Formation and Tomato Fruit Infection by Colletotrichum coccodes von Sanogo, S, Stevenson, R.E, Pennypacker, S.P

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Factors affecting sporogenic and myceliogenic germination of sclerotia of Colletotrichum coccodes von Sanogo, S, Pennypacker, S.P

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Birch foliar responses to simulated acidic fog and Septoria betulae inoculations von Kouterick, K.B, Skelly, J.M, Pennypacker, S.P, Cox, R.M

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Weather variables associated with infection of tomato fruit by Colletotrichum coccodes von Sanogo, S. (Pennsylvania State University, University Park.), Pennpacker, S.P, Stevenson, R.E, MacNab, A.A

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Responses of hybrid poplar clones and red maple seedlings to ambient O 3 under differing light within a mixed hardwood forest von Wei, C., Skelly, J.M., Pennypacker, S.P., Ferdinand, J.A., Savage, J.E., Stevenson, R.E., Davis, D.D.

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Reduction in the rate and duration of grain growth in wheat due to stem rust and leaf rust von McGrath, M.T. (Cornell University, Riverhead, NY), Pennypacker, S.P

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Appressorium formation and tomato fruit infection by Colletotrichun coccodes von Sanogo, S, Stevenson, R E, Pennypacker, S P

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Responses of hybrid poplar clones and red maple seedlings to ambient O(3) under differing light within a mixed hardwood forest von Wei, C, Skelly, J M, Pennypacker, S P, Ferdinand, J A, Savage, J E, Stevenson, R E, Davis, D D

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Effect of radiation, temperature, and moisture on conidial germination of Alternaria solani von Stevenson, R.E, Pennypacker, S.P

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Responses of hybrid poplar clones and red maple seedlings to ambient O₃ under differing light within a mixed hardwood forest von Wei, C, Skelly, J.M, Pennypacker, S.P, Ferdinand, J.A, Savage, J.E, Stevenson, R.E, Davis, D.D

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Responses of hybrid poplar clones and red maple seedlings to ambient O sub(3) under differing light within a mixed hardwood forest von Wei, C, Skelly, J M, Pennypacker, S P, Ferdinand, JA, Savage, JE, Stevenson, R E, Davis, D D

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A flexible model for studying plant disease progression von Pennypacker, S. P.

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Birch foliar responses to simulated acidic fog and Septoria betulae inoculations von Kouterick, K B, Skelly, J M, Pennypacker, S P, Cox, R M

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The influence of soil moisture on macroscopic sulfur dioxide injury to pinto bean foliage von Davids, J. A.

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Attempts to use satellite data to detect vegetative damage and alteration caused by air and soil pollutants von Fritz, E. L.

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Introduction von Pennypacker, S. P.

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Characterization of Puccinia polysora epidemics in Pennsylvania and Maryland von Raid, R.N, Pennypacker, S.P, Stevenson, R.E

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Alteration of physiological processes in wheat flag leaves caused by stem rust and leaf rust von McGrath, M.T. (Cornell University, Riverhead, NY), Pennypacker, S.P

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