IRTG 1070: SP 2.3 Decision support systems for weed management in North China Plain production systems
- Status
- completed
- Project begin
- 01.12.2008
- Project end
- 30.05.2013
- Sponsor mark
- DFG-GRK 1070
Description
Wide applications in Europe show that weed management strategies can be considerably improved when computerized expert systems, decision models and population-dynamic models are applied. If these management systems are transferred and adapted to the specific production systems of the North China Plain, herbicide use can be significantly reduced and the evolution of persistent weed populations in the major arable crops can be avoided.
The main objective of this subproject will be to create efficacy-based models analyzing herbicide performance in major crops and to create population-based models for herbicide use analyzing the yield losses caused by weed competition. For these models it is necessary to determine the sensitivity of major weed species to herbicides and to explore the potential of reduced dose rates for herbicide use. Furthermore it is necessary to investigate weed management practices combining preventive (timing of seeding, crop rotation and tillage) and direct methods (chemical and physical methods) of weed control. For population dynamic models it is necessary to determine long-term economic weed threshold estimating the changes in the soil seed bank. Finally both models will be combined in a decision support system for weed control in North China Plain Production Systems. The applicability of this decision support system will be tested in field experiments.Involved persons
Involved institutions
Sponsors
Publications in the course of the project
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Simulation model for longterm management of Avena fatua L. in winter wheat
2014: Ortrud Jäck, Alexander Menegat, Jinwei Zhang, Hanwen Ni, Roland Gerhards
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Calystegia hederacea WALL. abundance and response to winter wheat (Triticum aestivum L.) seeding rate and nitrogen fertilization in the North China Plain
2013: Menegat, A and Jaeck, O and Zhang, J and Kleinknecht, K and Mueller, B U and Piepho, H-P and Ni, H and Gerhards, R
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Chlorophyll Fluorescence Microscreening as a Rapid Detection Method for Herbicide Resistance in Grass Weeds in North China Plain Winter Wheat Production Systems and Beyond
2011: Alexander Menegat and Yasmin Kaiser and André Stephan and Hanwen Ni and Roland Gerhards
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Weed species abundance in north China plain winter wheat productions systems
2011: Alexander Menegat and Chunxin Hao and Hanwen Ni and Roland Gerhards
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Introduction of a Nondestructive Method for the Investigation of Herbicide Efficacy in Greenhouse Bioassays Based on Image Analysis
2011: Ortrud Jaeck and Alexander Menegat and Martin Weis and Hanwen Ni and Roland Gerhards
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Chlorophyll fluorescence microscreening as a rapid detection method for herbicide resistance in weeds
2011: Yasmin Kaiser