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Using herbicides in spring rapeseed and effect on quantity and quality parameters of yeald
P Mitrović1, R Marinković, D Marisavljević
1Institute of Field and Vegetable Crops, Novi Sad, Serbia.
Communications in Agricultural and Applied Biological Sciences
|June 16, 2012
Summary
Chemical weed control in spring rapeseed using trifluralin, clomazone, quizalofop-p-ethyl, and clopyralid showed varied impacts on crop quality. Most herbicides did not negatively affect yield or hectoliter weight, but some reduced oil and protein content.
Area of Science:
- Agricultural Science
- Agronomy
- Plant Science
Background:
- Effective weed management is crucial for optimizing spring rapeseed (Brassica napus) yield and quality.
- Herbicides are widely used for weed control, but their impact on crop physiology and seed composition requires careful evaluation.
Purpose of the Study:
- To assess the effects of four herbicides (trifluralin, clomazone, quizalofop-p-ethyl, and clopyralid) on spring rapeseed yield, hectoliter weight, and seed oil and protein content.
- To evaluate herbicide efficacy and crop response in two distinct locations (Novi Sad and Kragujevac).
Main Methods:
- Field trials were conducted in Novi Sad and Kragujevac, applying trifluralin, clomazone, quizalofop-p-ethyl, and clopyralid.
- Crop yield (kg/plot), hectoliter weight, seed oil content (%), and seed protein content (%) were measured.
- Statistical analysis, including t-tests, was performed to determine the significance of herbicide effects.
Main Results:
- Herbicides generally showed no adverse effects on rapeseed yield and hectoliter weight, except for quizalofop-p-ethyl in Kragujevac, which impacted control variants.
- Oil content was negatively affected by trifluralin + clopyralid in Novi Sad and by quizalofop-p-ethyl in Kragujevac.
- Trifluralin and quizalofop-p-ethyl reduced protein content in Novi Sad, with no significant negative effects observed in Kragujevac.
Conclusions:
- The choice of herbicide and location significantly influences spring rapeseed quality parameters, particularly oil and protein content.
- While most tested herbicides are safe for rapeseed yield, specific active ingredients may require careful consideration to avoid negative impacts on seed composition.
