ftware. 
n - Specific 
data types and 
ple, rectification 
| geometry of the 
scanned aerial 
images. To aid 
itial and spectral 
sd. 
n .- This is 
tiple images and 
In common Or 
/s important data 
ig GIS analytical 
new data layers 
teristics deemed 
nations. 
1aracteristics and 
; data layers are 
spatial modeler 
the processes. 
ic variables with 
n system allows 
ohysical changes 
agement choices 
ch develop from 
way of thinking, 
v aided by new 
gies range from 
sprayer) to the 
lysis of aerial 
nd location maps 
itial assessments 
nologies can be 
little additional 
ther technologies 
velopment and 
out how these 
zer and pesticide 
] other aspects of 
crop production need to be answered. More 
data is needed to ascertain the affect precision 
farming will have on agriculture - both 
economically and environmentally. The 
evolution of precision farming into a GIS will 
allow the accumulation of layers into one system 
for more effective data analysis and 
management. 
ACKNOWLEDGMENTS 
We appreciate the cooperation of the following 
companies: J. E. Chance & Associates, John 
Deere, Cross Equipment, Gold Kist, Albany 
Scales, Rice Lakes, Kelly Manufacturing 
Company, Mid-Tech, Ag Leader, Micro-Trak 
Applications Mapping, AGRIS and ERDAS. 
We are grateful to the following people for their 
help and personal involvement in this project: 
Jimmy and Matt Blitch, Bill Brim, Philip 
Grimes, W. P. and Tony Smith, Mike 
Newberry, Fred Barnes, Dana Cheek. 
REFERENCES 
Alexander, M. and K. Scow. 1989. Kinetics of 
biodegradation in soil. /n Reactions and 
Movement of Organic Chemicals in Soils. 
SSSA Special Public. No. 22. 
Birrel, S., K. Sudduth and S. Borgelt. 1993. 
Crop yield and soil nutrient mapping. Proc. 
ASAE Dec. 1993 Chicago. 
Bridges, D.C., C.K. Kvien, J.E. Hook and C.R. 
Stark, Jr. 1994. An analysis of pesticide use 
and benefits in U.S. grown peanuts. NESPAL 
Report 002. 
Brown, R.B., J-P.G.A. Steckler and G.W. 
Anderson. 1994. Remote sensing for 
identification of weeds in no-till corn. Trans. 
ASAE 37(1):297-302. 
Campbell, C.L. and J.P. Noe. 1985. The spatial 
analysis of soilborne pathogens and root 
diseases. Ann. Rev. Phytopathol. 23:129-48. 
Culbreath, A.K., M.K. Beute and J.C. Wayne. 
1990. Use of spatial patterns and density of 
inoculum of Cylindrocladium crotalariae during 
field evaluation of partially resistant peanut 
genotypes. Phytopathol. 80(12):1395-1400. 
157 
Everitt, J.H., D.E. Escobar, M.A. Alaniz, R. 
Villarreal and MR. Davis. 1992. 
Distinguishing brush and weeds on rangelands 
using video remote sensing. Weed Technol. 
6:913-921. 
Everitt, J.H., D.E. Escobar and F.W. Judd. 
1991. Evaluation of airborne video imagery for 
distinguishing black mangrove (A4vicennia 
germinans) on the Lower Texas Gulf Coast. J. 
Coastal Res.7(4):1169-1173. 
Everitt, J. H., D.E. Escobar, K.R. Sunny and 
M.R. Davis. 1994. Using airborne video global 
positioning systems and geographical 
information system technology for detecting and 
mapping citrus blackfly infestations. Southwest. 
Entomol. 19:2. 
Goering, CE. 1993. Recyling a concept. 
Agric. Eng. Nov 1993. p 25. 
Guitjens, J.C. 1992. Interpreting spatial yield 
variability of irrigated spring wheat. Trans. 
ASAE 35(1):91-95. 
Hunsaker, D. J. 1992. Cotton yield variability 
under level basin irrigation. Trans ASAE 
35(4):1205-1211. 
Larsen, W.E., D.A. Tyler and G. Nielsen. 1988. 
Field navigation using the global positioning 
system. Proc. ASAE Dec.1988 Chicago. 
Nixon, P.R., D.E. Escobar and R.M. Menges. 
1985. A multiband video system for quick 
assessment of vegetal condition and 
discrimination of plant species. Remote Sens. 
Environ. 17:203-208. 
Pang, S.N. and G.C. Zoerb. 1990. A grain flow 
sensor for yield mapping. Proc. ASAE. Dec. 
1990 Chicago. 
Raper, R.L., L.E. Asmussen and J.B. Powell. 
1990. Sensing hard pan depth with ground 
penetrating radar. Trans. ASAE 33(1):41-46. 
Richardson, A.J., RM. Menges and P.R. Nixon. 
1985. Distinguishing weed from crop plants 
using video remote sensing. Photogrammetric 
Engineering and Remote Sensing 51:1785-1790. 
Schueller, J.K. and Y.K. Bae. 1987. Spatially 
attributed automatic combine data acquisition. 
Comput. and Electron. in Agric. 2:119-127.