Ever since Benjamin Franklin got his knuckles burned when flying a kite in a thunderstorm, many scientists — and even more quacks — have been curious about the possibilities of what has been called electro-horticulture.
The logic is inescapable — most things react in some way to an electric current. Why shouldn’t plants react too, and perhaps grow better/faster/bigger?
While I’m not prepared to speak authoritatively on this subject in general, I have had a bit of experience with one aspect of electro-horticulture: the use of electric lights — fluorescent lights to be precise — in a contraption intended to start seedlings indoors. It had three shelves illuminated by bulbs casting a special kind of light (I’m not sure how special it really was) and provided space for a couple of dozen seed trays. At the time I was working on the 29th floor of an office building, and inevitably the contraption ended up in the corridor outside the ladies’ room, which was the only place I could find to put it.
The plants didn’t seem to mind. In fact, under the benevolent rays of the Gro-Lux, watered from time to time and admired by most of my fellow office workers as they passed by, the infant courgettes, tomatoes, snapdragons and the rest thrived. If they resented the low status of their situation, they could at least look forward to being transplanted.
Title: Calculationg costs of using farm machinery: a standardized procedure for Hawaii.
Personal Authors: Huang, W. Y., Marutani, H. K., Vieth, G. R., Keeler, J. T.
Author Affiliation: College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu, Hawaii, USA.
Editors: No editors
Document Title: Departmental Paper – Hawaii Agricultural Experiment Station (USA) 1979
Based on the recommended method of the American Society of Agricultural Engineering, a modified procedure for calculating the costs of using farm machinery in Hawaii is developed. This modified procedure can handle the situations of highly variable annual machine utilization rates of Hawaii’s diversified agriculture. An example illustrating the computation procedure and case study of a typical watermelon farm are presented. The procedure is also used to analyse the relation between costs and annual utilization. The analysis indicates that a farmer who has a low annual machine utilization rate incurs a high cost for using the machine, due mainly to the high interest charge. Authors’ summary. KEYWORDS: TROPAG | Economics | development and social sciences | agricultural equipment | costs | production function | Hawaii.
Calculationg costs of using farm machinery: a standardized procedure for Hawaii. | Huang, W. Y., Marutani, H. K., Vieth, G. R., Keeler, J. T. | Departmental Paper – Hawaii Agricultural Experiment Station (USA) 1979 |