Site specific weed control and spatial distribution of a weed seedbank

In: Precision Agriculture ‘05
Author:
H. Nordmeyer Federal Biological Research Centre for Agriculture and Forestry, Institute for Weed Research, Messeweg 11-12, D-38104 Braunschweig, Germany H.Nordmeyer@bba.de

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Type:
Chapter
Pages:
139–146
DOI:
https://doi.org/10.3920/978-90-8686-549-9_017

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This paper reports research work on site specific weed control and on weed seedbank estimates. The spatial distribution of seedbank and seedling populations were described. Based on weed distribution maps, spatially variable herbicide application could be carried out for grouped and/or single weed species resulting in significant reductions of herbicide use. The decision to spray or not spray was made according to weed threshold values. Spearman`s rank correlation coefficients between seedbank and seedling densities were calculated. A multiple range test was used to compare seedbank densities of field areas that were herbicide treated or not. The results indicated a weak relationship between the spatial distribution of weed seeds and emerged weeds. Nevertheless an increase in weed seedbank density could be estimated on areas which were untreated with herbicides according to the site specific weed control concept.

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Cover Precision Agriculture ‘05
E-Book ISBN:
9789086865499
Publisher:
Wageningen Academic
Print Publication Date:
24 Oct 2005
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