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| ROCHA,F.C.; OLIVEIRA NETO,A.M.; BOTTEGA,E.L.; GUERRA,N.; ROCHA,R.P.; VILAR,C.C.. |
| The aim of this study was to identify and map the weed population in a no-tillage area. Geostatistical techniques were used in the mapping in order to assess this information as a tool for the localized application of herbicides. The area of study is 58.08 hectares wide and was sampled in a fixed square grid (which point spaced 50 m, 232 points) using a GPS receiver. In each point the weeds species and population were analyzed in a square with a 0.25 m2 fixed area. The species Ipomoea grandifolia, Gnaphalium spicatum, Richardia spp. and Emilia sonchifolia have presented no spatial dependence. However, the species Conyza spp., C. echinatus and E. indica have shown a spatial correlation. Among the models tested, the spherical model has shown had a better fit... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conyza spp.; Geostatistics; Foci; No-tillage farming. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000100157 |
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