Abstract
Weeds impose serious problems in maize (corn) production, resulting in reduced crop yields and lower profits for farmers. The adverse effects of weeds have been attributed to the competition with maize plants for light, water, and nutrients, which can result in reduced growth and yield of the crop. In this context, effective weed management is important to minimize the negative impact of weeds on maize production. This can be achieved through a combination of cultural, mechanical, and chemical control methods. The use of pre-emergence and post-emergence herbicides as sequential or individual applications of these herbicides can be an effective way to manage weeds in maize. Two consecutive field experiments were conducted in 2019 and 2020 in order to determine the efficacy of sequential and individual applications of Dimethenamid-P + Terbuthylazine and Isoxaflutole + Thiencarbazone methyl + Cyprosulfamide as pre- emergence. On the other hand, Mesotrione + Nicosulfuron and Dicamba + Nicosulfuron were used as post-emergence herbicides. The effects of the herbicides were also assayed on corn yield and related parameters. In this regard, we designed the experiment in a randomized complete block design with four replications. Accordingly, the effect of the herbicides varied according to the active ingredients of the herbicide and the weed species. In addition, the effectiveness of herbicides varied according to the assessment times. The lowest effect was found on E. crus-galli, which was obtained from Mesotrione + Nicosulfuron (MN) (35%) plots. Other herbicides showed high efficacy (95–100%). Concerning values of both years, the highest cob length, cob diameter, 1000-grain weight, and plant height were obtained in weed-free control plots and the highest grain yield was obtained in the control plots with weed-free checks as 12.88 tons/ha and 12.37 tons/ha, respectively. The lowest corn grain yield was obtained in weedy control plots in both years. Our findings demonstrate that the combination of pre- and post- emergence herbicides in maize can be an effective way chemical weed control option.
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Claims 10
Claim · model-written summary
Herbicide effects varied by active ingredient and weed species.
- Outcome
- effect of the herbicidese0
- Qualifier
- active ingredients of the herbicide and the weed speciese0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effect of the herbicides varied according to the active ingredients of the herbicide and the weed species”
t0“Maize”
Claim · model-written summary
Herbicide efficacy varied with assessment time.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“the effectiveness of herbicides varied according to the assessment times”
Claim · model-written summary
Mesotrione plus Nicosulfuron had the lowest effect on E. crus-galli at 35%.
- Treatment
- Mesotrione + Nicosulfurone0
- Interactor
- E. crus-gallie0weed
- Outcome
- effect was found on E. crus-gallie0
- Direction
- loweste0
- Value
- 35%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“The lowest effect was found on E. crus-galli, which was obtained from Mesotrione + Nicosulfuron (MN) (35%) plots”
Claim · model-written summary
Other herbicides showed 95–100% efficacy.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“Other herbicides showed high efficacy (95–100%)”
Claim · model-written summary
Weed-free plots had the highest cob length, cob diameter and 1000-grain weight.
- Treatment
- weed-free control plotse0
- Outcome
- cob length, cob diameter, 1000-grain weighte0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“the highest cob length, cob diameter, 1000-grain weight, and plant height were obtained in weed-free control plots”
Claim · model-written summary
Weed-free plots had the highest plant height.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“the highest cob length, cob diameter, 1000-grain weight, and plant height were obtained in weed-free control plots”
Claim · model-written summary
Weed-free control plots had the highest grain yield at 12.88 tons/ha in the first year.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“the highest grain yield was obtained in the control plots with weed-free checks as 12.88 tons/ha and 12.37 tons/ha, respectively”
Claim · model-written summary
Weed-free control plots had the highest grain yield at 12.37 tons/ha in the second year.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize”
e0“the highest grain yield was obtained in the control plots with weed-free checks as 12.88 tons/ha and 12.37 tons/ha, respectively”
Claim · model-written summary
Weedy control plots had the lowest maize grain yield in both years.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- weedy control plotse0
- Outcome
- corn grain yielde0
- Direction
- loweste0
- Qualifier
- both yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lowest corn grain yield was obtained in weedy control plots in both years.”
Claim · model-written summary
The authors concluded combined pre- and post-emergence herbicides can control weeds in maize.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the combination of pre- and post- emergence herbicides in maize can be an effective way chemical weed control option”
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