People : Fisher, H.D.

1995

Humpherys, A.S. and Fisher, H.D. (1995) Water sensor feedback control system for surface irrigation. Applied Engineering in Agriculture. 11(1):61-65.

1991

Kincaid, D.C. and Fisher, H.D. (1991) A radio-controlled trencher for accurate installation of shallow ditches and pipelines. Applied Engineering in Agriculture. 7(2):216-220.

1984

Fisher, H.D. and Humpherys, A.S. (1984) Electronic Single Station Irrigation Timer/Controller. pp. 182-190. In: Proc. Natl. Conf. on Agricultural Electronics Applications. USA-IL-Chicago, 1983/12/11-13. ASAE Agricultural Electronics - 1983 and Beyond, Vol. 1: Field Equipment, Irrigation & Drainage. ASAE Publication No. 8-84. ASAE, St. Joseph, MI.

1983

Fisher, H.D. and Humpherys, A.S. and Young, D.A. (1983) Automated Telemetric Irrigation Controller. pp. 250-258. In: Proc. Specialty Conference on Advances in Irrigation and Drainage: Surviving External Pressures. USA-WY-Jackson, 1983/07/20-22.

Cary, J.W. and Fisher, H.D. (1983) Irrigation Decisions Simplified with Electronics and Soil Water Sensors. Soil Science Society of America Journal. 47(6):1219-1223.

1977

Fisher, H.D. (1977) An Improved Counter-Timer (a letter). The Physics Teacher. 15(9):556-557.

1975

Fisher, H.D. and Smith, J.H. (1975) An Automatic System for Sampling Processing Waste Water. Soil Science Society of America Proceedings. 39(2):382-384.

Bowers, S.A. and Smith, S.J. and Fisher, H.D. and Miller, G.E. (1975) Soil Water Measurement with an Inexpensive Spectrophotometer. Soil Science Society of America Proceedings. 39(3):391-393.

1974

Fisher, H.D. and Bondurant, J.A. (1974) All-Electronic Counter/Timer for Current Meters. Transaction of the ASAE. 17(3):412-413.

Fisher, H.D. and Brown, M.J. (1974) A Two-Channel Electrical Counter. Journal of Economic Entomology. 67(5):689-690.

1973

Fisher, H.D. and Brown, M.J. (1973) A Photoelectric Seed Counter. Agronomy Journal. 65(4):682-684.

1972

Fisher, H.D. (1972) An Inexpensive Method of Determining Plant Moisture Stress Using Freezing Point Depression. Soil Science. 13(6):383-385.

1971

Cary, J.W. and Fisher, H.D. (1971) Plant Water Potential Gradients Measured in the Field by Freezing Point. Physiologia Plantarum (Sweden). 24(3):397-402.

1970

Fisher, H.D. and Cary, J.W. (1970) Accumulation of Mercury Vapor in Soils Laboratories. Soil Science Society of America Proceedings. 34(4):701-703.

Fisher, H.D. and Bondurant, J.A. (1970) An Inexpensive Counter-Timer for Water Velocity Meters. Agricultural Engineering. 51(10):600-601.

Fisher, H.D. and Brown, M.J. (1970) Photoelectric Tachometer for Precise Centrifuge Speed Determination. Soil Science Society of America Proceedings. 34(6):950-952.

1969

Cary, J.W. and Fisher, H.D. (1969) Plant Moisture Stress: A Portable Freezing-Point Meter Compared with the Psychrometer. Agronomy Journal. 61:302-305.

1968

Cary, J.W. and Jensen, M.E. and Fisher, H.D. (1968) Physical State of Water in Plant Xylem Vessels. Agronomy Journal. 60(2):167-169.