Soil test apparatus

Details Soil test apparatus Soil test apparatus

1989-09-22

1991-08-06

Berman, Jack I.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250339, G01J 342

Patent

active

050380400

ABSTRACT:
A soil test apparatus for field use comprises structure adapting the apparatus for transport over a field for testing the soil thereof; an infrared radiation generator for producing infrared radiation at a plurality of predetermined wavelengths, an elongate light carrying member coupled to the infrared radiation generator and extending therefrom for directing infrared radiation onto the soil; and a light detector for detecting infrared radiation reflected from the soil and for producing corresponding electrical signals.

REFERENCES:
patent: Re31023 (1982-09-01), Hall
patent: 3776642 (1973-12-01), Anson
patent: 3828173 (1974-08-01), Knepler
patent: 3861788 (1975-01-01), Webster
patent: 4253766 (1981-03-01), Funk
patent: 4266878 (1981-05-01), Auer
McClure, W. F., "Near IR Instru.", in: Near IR Tech. in Agricultural and Food Industries, (1987) AACC.
Williams, P. C., "Commercial Near IR Reflect Analy.", in: Near IR Tech. in Agricultural & Food Industries, (1987) AACC.
Worner, C. R., "Design & Constru. of a Portable Spectroph. for Real Time Analy. of Soil Refect. Properties", M. S. Thesis U. of Illinois at Urbana--Champaign (1989).
Sudduth & Hummel, Optimal Signal Processing for Soil Organic Matter Determination, ASAE, Jun. 26,29, 1988.

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