Precision agriculture

S. E. Cook and R. G. V. Brantley, Precision agriculture—opportunities, benefits and pitfalls of site-specific crop management in Australia. Aust. J. E.rp. Aftric. 38 753 (1998). 

Precision Agriculture Centre, University of Minnesota (2002) Proceedings of the 6th International Conference on Precision Agriculture, Minneapolis, 14-17 My 2002 PreConsultants (2004) SimaPro database manual. The BUWAL250 library. Available at http // www.pre.nl/simapro/... 

Precipitation inhibitors, dispersants contrasted, 3 686 Precipitation leachate procedure, synthetic, 25 868-869 Precipitation reactions, for niobium and tantalum determination, 27 142-143 Precipitation reagents, protein, 22 133 Precipitation with compressed antisolvent (PCA) process, 24 17, 18 Precipitator dust, in phosphorus manufacture, 19 12 Precipitators, electrostatic, 23 180 Precision agriculture, 23 328 26 269-270 Precision measurement techniques, noble gases in, 27 370 Precision scales, 26 245 Preconcentration, of uranium ores, 25 401 Pre-crosslinked polychloroprene grades, 19 852... 

This example is offered for illustration only. Modern precision agriculture utilizes geographical positioning systems (GPS) for sampling and for determining fertilizer needs. See, for example, the following Web site http //edis.ifas.ufl.edu/BODY SS402 (as of April 22, 2002). 

Baker, T.L., T.S. Colvin, and D.B. Jaynes (1997). Potential environmental benefits of adopting precision agriculture. Proceedings of the 3rd International Conference Precision Agriculture. June 23-26, 1996, Minneapolis, MN American Society of Agronomy, Crop Science Society, and Soil Science Society. 

Steven, M.D. (1997). Satellite monitoring for precision farm decision support. First European Conference on Precision Agriculture, 7-10 September 1997. Oxford, UK Warwick University Press, pp. 697-704. 

Seelan, S. K., Laguette, S., Casady, G. M. and Seielstad, G. A. (2003) Remote sensing applications for precision agriculture a learning community approach. Remote Sensing Environ. 88(1-2), 157-69. 

Paice, M.E.R., Miller, P.C.H. and Day, W. (1977) Using a computer simulation to compare patch spraying strategies. Proceedings, 1st European Conference on Precision Agriculture, 421-429. 

Keywords Biopolymers, seed coating, precision agriculture, crop productivity... 

Adamchuk VI, Hummel IW, Morgan MT, Upadhyaya SK (2004) On-the-go soil sensors for precision agriculture. Comput Electron Agric 44(1) 71-91... 

We revealed eight regularities concerned within-field variability of agrochemical indices. The regularities would be important for technologies of precision agriculture. In the first place it was found that the soil reaction as well as humus and mobile phosphorus and potassium content more or less corresponded to a normal distribution. 

Soil analysis is beset with the further complication that samples have to be taken from different depths, to reflect movement of nutrients during the seasons. Precision agriculture is focusing renewed attention to the selection of methods of sampling flelds, in order to improve the efficiency of fertilizer use. Here the controversy is whether analysis of plant material is more practicable than soil analysis in provision of the necessary information. Plant material, such as grain or herbage, is more readily applicable than soil analysis, as well as being more amenable to analysis by NIR. It also reflects nutrients that are available to the plant. 

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