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Integrated weed managment in maize: crop rotation and PRE herbicides

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2022
bitstream_6052.pdf (3.938Mb)
Authors
Brankov, Milan
Simic, Milena
Dragičević, Vesna
Conference object (Published version)
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Abstract
Crop rotation is a simple and effective part of an Integrated Weed Management (IWM) system. This approach makes it possible to rotate herbicides with different modes of action (MOA), avoiding or postponing herbicide resistance. Besides all the known advantages and benefits, it is still not widely used in maize production. In Serbia, about 30% of total maize production is a continuous cropping. The aim of this research was to test the benefits of growing maize in crop rotation with winter wheat compared with a continuous cropping, combined with pre-emergence herbicide application. Field trials started in 2009, and five maize-winter wheat rotations have been completed. Weeds were controlled with an herbicide mixture of isoxaflutole and S-metolachlor, applied at either the full label rate or half rate, while one plot was kept weed free (manually), and one was a control. Applying IWM decreased the fresh biomass of weeds and then density by 96% and 97%, respectively. In continuous maize, pe...rennial weeds became dominant after the first rotation. Crop rotation significantly influenced maize productive parameters, decreasing the variation in leaf area index and grain yield, and increasing the magnitude of these parameters with the number of cycles. The biggest differences in the analyzed parameters were observed in 2015, 2017 and 2019, indicating many positive long - term henefits of crop rotation on maize leaf area index and grain yield.

Keywords:
crop sequences / isoxaflutole / IWM / maize monoculture / s-metolachlor
Source:
8. International weed science congress "Weed science in a climate of change", 2022, 36-36
Publisher:
  • Bangkok: Weed science society of Thailand
[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_rik_1117
URI
http://rik.mrizp.rs/handle/123456789/1117
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  • Радови истраживача / Researchers' publications
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MRIZP

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