by Ford, S.A. (The Pennsylvania State University.), Gripp, S.I
Published in Extension circular (Pennsylvania State University. Agricultural Extension Service) (USA) (01.04.1995)

by Swistock, B.R. (Environmental Resources Research Institute.), Sharpe, W.E
Published in Extension circular (Pennsylvania State University. Agricultural Extension Service) (USA) (01.11.1994)

by Murphy, D. (The Pennsylvania State University.), Ambe, F
Published in Extension circular (Pennsylvania State University. Agricultural Extension Service) (USA) (01.11.1994)

by Landschoot, P. (Pennsylvania State University.), Harper, J.C. II
Published in Extension circular (Pennsylvania State University. Agricultural Extension Service) (USA) (01.06.1994)

by Ford, S.A. (Pennsylvania State University)
Published in Extension circular (Pennsylvania State University. Agricultural Extension Service) (USA) (01.03.1994)

by Kelsey, T.W. (Pennsylvania State University), Kreahling, K
Published in Extension circular (Pennsylvania State University. Agricultural Extension Service) (USA) (01.03.1994)

by Kelsey, T.W. (Pennsylvania State University.)
Published in Extension circular (Pennsylvania State University. Agricultural Extension Service) (USA) (01.02.1994)

by Landschoot, P. (Pennsylvania State University)
Published in Extension circular (Pennsylvania State University. Agricultural Extension Service) (USA) (01.01.1994)

by Harper, J.C. II (The Pennsylvania State University)
Published in Extension circular (Pennsylvania State University. Agricultural Extension Service) (USA) (01.11.1993)

by Brumfield, R.G. (Rutgers Cooperative Extension), Sim, L.E, Ford, P, Frumento, C, Wolnick, D.J
Published in Extension circular (Pennsylvania State University. Agricultural Extension Service) (USA) (01.06.1993)

by Jacobs, S.B. (Penn State)
Published in Extension circular - Pennsylvania State University, Agricultural Extension Service (USA) (01.03.1992)

by Ishler, V.A. (Penn State), Heinrichs, A.J, Buckmaster, D.R, Adams, R.S, Graves, R.E
Published in Extension circular - Pennsylvania State University, Agricultural Extension Service (USA) (01.12.1991)

by Landschoot, P. (PennState)
Published in Extension circular - Pennsylvania State University, Agricultural Extension Service (USA) (01.06.1991)

by Murphy, D.J. (The Pennsylvania State University)
Published in Extension circular - Pennsylvania State University, Agricultural Extension Service (USA) (01.04.1991)

by Davis, L. (Pennsylvania State University), Brittingham, M, Garber, L, Rourke, D
Published in Extension circular - Pennsylvania State University, Agricultural Extension Service (USA) (1991)

by Temple, G. (Penn State Cooperative Extension), Bresenhan, T, McCollough, R, Thompson, F, Sommers, R
Published in Extension circular - Pennsylvania State University, Agricultural Extension Service (USA) (01.06.1990)

by Brittingham, M. (PennState Colleg of Agriculture Cooperative Extension)
Published in Extension circular - Pennsylvania State University, Agricultural Extension Service (USA) (01.05.1990)

by Heinrichs, A.J. (Pennsylvania State University College of Agriculture, Cooperative Extension), Swartz, L.A
Published in Extension circular - Pennsylvania State University, Agricultural Extension Service (USA) (01.04.1990)

by Beierlein, J.G. (PennState College of Agriculture Cooperative Extension), Woodruff, B.A, McSweeny, W.T
Published in Extension circular - Pennsylvania State University, Agricultural Extension Service (USA) (01.03.1990)

by Cooper, J.G. (College of Agriculture, Cooperative Extension), Becker, J.C
Published in Extension circular - Pennsylvania State University, Agricultural Extension Service (USA) (01.02.1990)