ORIGINAL ARTICLE
The influence of agronomical and chemical weed control on weeds of corn
1
Department of Agronomy, Poznan University of Life Sciences, Poznan, Poland
A - Research concept and design; B - Collection and/or assembly of data; C - Data analysis and interpretation; D - Writing the article; E - Critical revision of the article; F - Final approval of article
Submission date: 2022-02-16
Acceptance date: 2022-04-19
Online publication date: 2022-06-29
Corresponding author
Robert Idziak
Department of Agronomy, Poznań University of Life Sciences, Dojazd 11, 60-632, Poznan, Poland
Department of Agronomy, Poznań University of Life Sciences, Dojazd 11, 60-632, Poznan, Poland
Journal of Plant Protection Research 2022;62(2):215-222
HIGHLIGHTS
- Corncob yield of sweet maize was reduced from 30% up to 93% due to weed infestation.
- In sweet corn, weeds are effectively managed by pre- or postemergence applied herbicides.
- T+M+S gave better results in terms of efficacy, weed management indices, yield and net return.
- Hand weeding was the most effective, unlike mechanical weeding, which was non-effective.
KEYWORDS
TOPICS
ABSTRACT
Weeds in sweet corn reduce the yield and are economically more harmful than other pests.
The aim of this study was to evaluate the effects of mechanical weed control and efficacy
of pre- and postemergence applied herbicides in sweet corn, and their influence on weed
control expressed by various indices, corncob yield and net return. Field studies were carried
out with preemergence thiencarbazone-methyl + isoxaflutole (at 29.7 + 74.3 g · ha–1),
postemergence S-metolachlor + terbuthylazine (937.5 + 562.5 g · ha–1), mesotrione + terbuthylazine
(100 + 652 g · ha–1), terbuthylazine + mesotrione + S-metolachlor (656.3 +
+ 131.3 + 1093.8 g · ha–1), weed free (WF, hand weeding), and mechanical weeding (MW,
hoeing) to assess weed control, corncob yield and net return. Variability in potential yield
losses was observed between years due to weather conditions at the level of 30 to even 93%.
Hand weeding was the most effective, but it is expensive and needs is labour consuming,
unlike mechanical weeding which was the cheapest but simultaneously the least effective.
Among pre- and postemergence applied herbicides, a mixture of terbuthylazine + mesotrione
+ S-metolachlor was the most efficacious weed control treatment. It gave high corncob
yield and economic net return.
ACKNOWLEDGEMENTS
The authors are grateful for the support provided by
the Poznan University of Life Sciences, Poland including
technical support and materials used for field experiments.
RESPONSIBLE EDITOR
Kinga Matysiak
CONFLICT OF INTEREST
The authors have declared that no conflict of interests exist.
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