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Effect of tree fertilization on numbers and development of pear psylla (Homoptera: Psyllidae), and on fruit damage

Pfeiffer, DG; Burts, E. C. (1983)

Coleoptera of poultry manure in caged-layer houses in North Carolina

Pfeiffer, DG (1980)

Relative susceptibility to slide-dip application of cyhexatin in three populations of Panonychus ulmi (Koch) in Virginia apple orchards

Pfeiffer, DG; Pfeiffer, S. W. (1986)

Effect of tree fertilization on protein and free amino acid content and feeding rate of pear psylla (Homoptera: Psyllidae)

Pfeiffer, DG; Burts, E. C. (1984)

Effects of field applications of paraquat on densities of Panonychus ulmi (Koch) and Neoseiulus fallacis (Garman)

Pfeiffer, DG (1986)

Disruption of olfactory communication in oriental fruit moth and lesser appleworm in a Virginia peach orchard

Pfeiffer, DG; Killian, J. C. (1988)

Nitrogen and potassium fertilization effects on yield and quality of burley tobacco

Evanylo, GK; Sims, JL; Grove, JH (1987)

Interdisciplinary evaluation of pest management systems

Virginia Agricultural Experiment Station (Virginia Agricultural Experiment Station, 1985)

Differentiation of Endothia gyrosa and Endothia Parasitica by Disc Electrophoresis of Intramycelial Enzymes and Proteins

Stipes, R. Jay; Emert, George H.; Brown, Ross D. (Mycological Society of America, 1982)

Mycelial proteins from seven isolates of Endothia gyrosa and five isolates of E. parasitica were extracted from acetone powders, separated on polyacrylamide gels by disc electrophoresis, and then stained for general proteins, ...

Bringing land back in: Changing strategies to improve agricultural production in the West African Sahel

Painter, T.M. (Boulder, CO: Westview Press, 1987)

The chapter examines the difficulties encountered by programmes of the Niger government and development assistance organizations to increase agricultural productivity among peasant smallholders, when such endeavours lack ...

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