Monitoring of Soybean Cyst Nematode Using GPS: A Case Study in Sertaneja County, Paraná State, Brazil

João F. Galera Monico, Paulo O. Camargo, Eduardo A. da Silva, Anotnio Garcia

Abstract:	In this paper, precision farming aspects related to the pest surveying, specially the Soybean Cyst Nematode (SCN), Heterodera glycines, will be described for a case study carried out in Brazil. In the conventional process of se-quential sampling, aiming to monitor the SCN, pickets identify the sites where soil is collected, in order to suc-cessively revisit them to compute the population level of this nematode. Due to the agriculture operations, these pickets might be removed or even the soybeans plants can hide them. These have been the main problems con-cerning the conventional sampling process. The GPS technology allows mapping features with submetric pre-cision, besides providing easy ways of returning to them. The aim of this paper is to assess the use of this technol-ogy to support the monitoring of the SCN in the North region of Paraná. The DGPS technique allowed the reoc-cupation of the sampled points with average error of the order of 0.50m. No density differences were observed for samples collected within a radio of 50 cm of the original point. The DGPS allowed almost instantaneous set up of each point to be sampled, whereas in the conventional process it took, on average, 8 minutes.
Published in:	Proceedings of the 12th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1999) September 14 - 17, 1999 Nashville, TN
Pages:	2071 - 2078
Cite this article:	Monico, João F. Galera, Camargo, Paulo O., Silva, Eduardo A. da, Garcia, Anotnio, "Monitoring of Soybean Cyst Nematode Using GPS: A Case Study in Sertaneja County, Paraná State, Brazil," Proceedings of the 12th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1999), Nashville, TN, September 1999, pp. 2071-2078.
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