| Registro completo |
| Provedor de dados: |
Planta Daninha
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| País: |
Brazil
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| Título: |
Weed mapping using techniques of precision agriculture
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| Autores: |
ROCHA,F.C.
OLIVEIRA NETO,A.M.
BOTTEGA,E.L.
GUERRA,N.
ROCHA,R.P.
VILAR,C.C.
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| Data: |
2015-03-01
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| Ano: |
2015
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| Palavras-chave: |
Conyza spp.
Geostatistics
Foci
No-tillage farming
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| Resumo: |
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 for Conyza spp. and Eleusine indica and the Gaussian model for Cenchrus echinatus. The three species have a clumped spatial distribution. The mapping of weeds can be a tool for localized control, making herbicide use more rational, effective and economical.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000100157
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| Editor: |
Sociedade Brasileira da Ciência das Plantas Daninhas
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| Relação: |
10.1590/S0100-83582015000100018
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| Formato: |
text/html
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| Fonte: |
Planta Daninha v.33 n.1 2015
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| Direitos: |
info:eu-repo/semantics/openAccess
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