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Recording Water Use by Means of Digital Equipment 1
Author(s) -
Payne Leland F.,
Schreiber H. A.
Publication year - 1972
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1972.00021962006400010029x
Subject(s) - greenhouse , word (group theory) , environmental science , computer science , agricultural engineering , arithmetic , agronomy , mathematics , biology , engineering , geometry
A device made of digital components is described that automatically (i) senses a discrete loss of water in individual hydroponic cultures; (ii) stores this information as identifying numbers in an 8 2‐digit word memory; and (iii) displays this information on an electric typewriter at 1‐minute intervals. As many as 16 readings a day can be obtained in a greenhouse, if the ratio of leaf area to water surface area is high enough. This equipment, then, gives a sensitive measurement of water use related to climatic, genetic, or physiologic treatments.