Weed management in soybean with a special focus on the control of purple nutsedge (Cyperus rotundus)
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Kuupäev
2020
Kättesaadav alates
Ajakirja pealkiri
Ajakirja ISSN
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Kirjastaja
Abstrakt
Purple nutsedge (Cyperus rotundus L.) is globally an important perennial weed.
Infestations from this species lead to significant losses in yield and quality of crop production. A
field study was conducted at Kopaida region in Greece, to evaluate the efficacy of different
herbicides for the weed management in soybean. The evaluation of the herbicides was based on
the efficacy against purple nutsedge and the effect on soybean biomass production and crop seed
yield. Treatments included an untreated control, two pre-emergence applications (with
S-metolachlor and pendimethalin), as well as three post-emergence applications (with
trifloxysulfuron, bentazone and pyrithiobac sodium). A single application of S-metolachlor
maintained the density of purple nutsedge at 15 plants per m2
in soybean and allowed the crop to
compete adequately with the weed. S-metolachlor also resulted in a seed yield of 3.26 tn ha-1
, a
value 52% higher than the untreated control and 38–45% higher than the other herbicides. The
results from this study demonstrated that a combination of high seed density in soybean and
effective application of herbicides like S-metolachlor can lead to economically acceptable yields.
Kirjeldus
Märksõnad
field crops, weed management, purple nutsedge, herbicides, yield, articles