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Kartierung und geostatistische Analyse der Unkrautverteilung in Zuckerrübenschlägen als Grundlage für eine teilschlagspezifische Bekämpfung
Author(s) -
Gerhards R.,
Sökefeld M.,
Knuf D.,
Kühbauch W.
Publication year - 1996
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1111/j.1439-037x.1996.tb00470.x
Subject(s) - weed , sampling (signal processing) , mathematics , agronomy , biology , physics , optics , detector
Mapping and geostatistical analysis of weed distribution in sugarbeet fields for site‐specific weed management Field experiments were conducted to study the distribution of weeds in 18 sugarbeet fields of 3 ha each. The distance between each sampling point was 7.5–20 m. Weed density was counted and maps were plotted for the distribution of Chenopodium album and Solanum nigrum using linear interpolation. Geostatistical methods were applied to analyse the variance of weed density between the sampling points. A clear detection of weed patches was possible when the variance of weed density at a single sampling point ‘nugget effect’ was low and a high continuity between neighbouring grid points existed. If soil conditions or cultivation methods are not homogeneous in the field (drift), no continuity between the sampling points was found. Geostatistical analysis of the weed distribution in agricultural fields provide helpful information for a site‐specific weed management.