SPATIAL VARIABILITY OF WEEDS OF AN RED LATOSOL (OXISOL) UNDER NO- TILLAGE SYSTEM.
DOI:
https://doi.org/10.18011/bioeng2008v2n3p273-281Keywords:
Site Specific Management, Semivariograms, Precision AgricultureAbstract
The objective of this study was to analyze the spatial variability of weeds in an Red Latosol (Oxisol)under no-tillage system. Samples were taken in an area of 0.5 ha, in 50 sampling points withspacing of 5 m x 10 m. Data were analyzed by means of classical statistics and geostatistics, andspatial variability of the maps constructed by the technique of interpolation by kriging. All speciesof weeds present in the study area showed spatial variability with the exception of Ipomoea triloba(L.) and Heliotropium indicum (L.), which showed pure nugget effect. The values of range (a) showthat the spacing between samples can be extended to all species of weeds. Unable to determinespecifics areas of management in the local since the different species of weed infested areas ofdifferent area.
Downloads
References
CAMBARDELLA, C.E.; MOORMAN, T.B.;NOVAK, J.M.; PARKIN, T.B.; KARLEN, D.L.;TURCO, R.F.; KONOPKA, A.E. Field-scalevariability of soil properties in Central Iowa soils.Soil Science Society of America Journal,58:1501-1511, 1994.
CARVALHO, J.R.P.; SILVEIRA, P.M. & VIEIRA,S.R. Geoestatística na determinação da varia-bilidade espacial de características químicas dosolo sob diferentes preparos. PesquisaAgropecuária Brasileira, v.37, n.8, p.1151-1159,2002.
EMBRAPA. Centro Nacional de Pesquisa deSolos, Sistema Brasileiro de Classificação deSolos, 2,ed, Rio de Janeiro, 2006. 306pp,
GOLDEN SOFTWARE. Surfer: User ́s Guide(Versión 7.0). EEUU: Golden Software, 1999.679 p.
JOURNEL, A.G.; HUIJBREGTS, Ch.J. Mininggeostatistics. London, Academic Press, 1978.600p.
LORENZI, H. Manual de identificação e contro-le de plantas daninhas: plantio direto e conven-cional. 5.ed, Nova Odessa: Plantarum, 2000.384 p.
LUTMAN, P.J.W.; PERRY, N.H. Methods ofweed patch detection in cereal crops, In: The1999 Brighton Conference - Weeds, Brighton1999, Proceedings, Brighton: BCPC, 1999,p.627-634.
MONQUERO, P.A.; AMARAL, L.R.; BINHA,D.P.; SILVA, P.V.; SILVA, A.C.; MARTINS, F.R.A.Mapas de infestação de plantas daninhas emdiferentes sistemas de colheita da cana-de-açú-car. Planta Daninha, Viçosa, v.26, n.1, p. 47-55,2008.
MORTENSEN, D.A.; DIELEMANN, J.A.;JOHNSON, G.A. Weed spatial variation andweed management. In: HATFIELD, J.L.,BUHLERARD, D.D., STEWART, B.A. (Eds.),Integrated Weed and Soil Management. AnnArbor Press, Chelsea, MI, 1998. pp. 293-309.
SANTOS, C.M.A. Estatística Descritiva - Manu-al de Auto-aprendizagem, Lisboa, EdiçõesSílabo, 2007. 261p.
SCHAFFRATH, V.R.; TORMENA, C.A.; GON-ÇALVES, A.C.A.; OLIVEIRA JUNIOR, R.S. Va-riabilidade espacial de plantas daninhas em doissistemas de manejo de solo. Revista Brasileirade Engenharia Agrícola e Ambiental, CampinaGrande, v.11, n.1, p.53-60, 2007.
SHIRATSUCHI, L.S.; FONTES, J.R.A.;RESENDE, A.V. Correlação da distribuição es-pacial do banco de sementes de plantas dani-nhas com a fertilidade dos solos. Planta Dani-nha, Viçosa, v. 23, n. 3, p. 429-436, 2005.
SHIRATSUCHI, L.S.; MOLIN, J.P.;CHRISTOFFOLETI, P.J. Mapeamento da dis-tribuição espacial da infestação de Panicummaximum durante a colheita da cultura de mi-lho. Planta Daninha, Viçosa, v.22, n.2, p.269-274, 2004.
SIQUEIRA. G.M.; VIEIRA, S.R.; CEDDIA, M.B.Variabilidade espacial de atributos físicos do solodeterminados por métodos diversos. Bragantia,Campinas, v.67, n.1, p.203-211, 2008.
VIEIRA, S.R. Geoestatística em estudos de va-riabilidade espacial do solo. In: NOVAIS, R.F.,ALVAREZ, V.H., SCHAEFER, G.R. (ed.) Tópi-cos em Ciência do solo. Viçosa: Sociedade Bra-sileira de Ciência do Solo, v.1, 2000. p. 1-54.
VIEIRA, S.R.; NIELSEN, D.R.; BIGGAR, J.W.;TILLOTSON, P.M. The Scaling ofsemivariograms and the kriging estimation.Revista Brasileira de Ciência do Solo, v.21,p.525-533, 1997.
WARRICK, A.W.; NIELSEN, D.R. Spatialvariability of soil physical properties in the field.In: HILLEL, D. Applications of soil physics, NewYork: Academic Press, 1980.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2014 JOSILENE P. DE OLIVEIRA, LUCAS F. BATISTA, GLÉCIO M. SIQUEIRA
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish in this journal agree to the following terms:
a) Authors retain the copyright and grant the journal the right of first publication, with the work simultaneously licensed under the Creative Commons Attribution License that allows the sharing of the work with recognition of authorship and initial publication in this journal.
b) Authors are authorized to assume additional contracts separately, for non-exclusive distribution of the version of the work published in this journal (eg, publish in an institutional repository or as a book chapter), with recognition of authorship and initial publication in this journal.