Method and apparatus for controlling rate of application of fert

Details Method and apparatus for controlling rate of application of fert Method and apparatus for controlling rate of application of fert

1986-09-17

1988-04-19

Rolla, Joseph J.

Dispensing

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222 52, 239172, 324337, B67B 700

Patent

active

047383771

ABSTRACT:
A ground penetrating radar unit is scanned over the surface of a field, and provides a signal representative of the variation in the depth of soil along the scanning path. The signal is used to control the rate of application of fertilizer to the soil.

REFERENCES:
patent: 3806795 (1974-04-01), Morey
patent: 4006481 (1977-02-01), Young et al.
patent: 4013224 (1977-03-01), Carter
patent: 4267971 (1981-05-01), Johnston
patent: 4381544 (1983-04-01), Stamm
"Agri-Industry, Pulse", p 74; May/June 1986; article on Soil Mapping Device Surfaces.

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