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Infestation maps and spatial stability of main weed species in maize culture

AutorCalha, Isabel M.; Sousa, E.; González-Andújar, José Luis
Palabras claveGeo-statistics
Solanum nigrum
Echinochloa crus-galli
Chenopodium album
Precision agriculture
Kriging
Fecha de publicación2014
EditorSociedade Brasileira de Herbicidas e Ervas Daninhas
CitaciónPlanta Daninha 32(2): 275- 282 (2014)
ResumenA study on the spatial distribution of the major weeds in maize was carried out in 2007 and 2008 in a field located in Golegã (Ribatejo region, Portugal). The geo-referenced sampling focused on 150 points of a 10 x 10 m mesh covering an area of 1.5 ha, before herbicide application and before harvest. In the first year, 40 species (21 botanical families) were identified at seedling stage and only 22 during the last observation. The difference in species richness can be attributed to maize monoculture favouring reduction in species number. Three of the most representative species were selected for the spatial distribution analysis: Solanum nigrum, Chenopodium album and Echinochloa crus-galli. The three species showed an aggregated spatial pattern and spatial stability over both years, although the herbicide effect is evident in the distribution of some of them in the space. These results could be taken into account when planning site-specific treatments in maize.
Versión del editorhttp://dx.doi.org/10.1590/S0100-83582014000200004
URIhttp://hdl.handle.net/10261/127821
DOI10.1590/S0100-83582014000200004
Identificadoresdoi: 10.1590/S0100-83582014000200004
issn: 0100-8358
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