Tokasi, Somayeh, Nouralizadeh Otaghsara, Morteza (2022). Grass weeds control in transplanted rice with Cyhalofop-butyl. , 11(4), 433-443. doi: 10.48311/jcp.2022.1607
Somayeh Tokasi; Morteza Nouralizadeh Otaghsara. "Grass weeds control in transplanted rice with Cyhalofop-butyl". , 11, 4, 2022, 433-443. doi: 10.48311/jcp.2022.1607
Tokasi, Somayeh, Nouralizadeh Otaghsara, Morteza (2022). 'Grass weeds control in transplanted rice with Cyhalofop-butyl', , 11(4), pp. 433-443. doi: 10.48311/jcp.2022.1607
Tokasi, Somayeh, Nouralizadeh Otaghsara, Morteza Grass weeds control in transplanted rice with Cyhalofop-butyl. , 2022; 11(4): 433-443. doi: 10.48311/jcp.2022.1607

Grass weeds control in transplanted rice with Cyhalofop-butyl

Journal of Crop Protection
Article 1, Volume 11, Issue 4, 2022, Pages 433-443    PDF (715.73 K)
Document Type: Original Research
DOI: 10.48311/jcp.2022.1607
Authors
Somayeh Tokasi* 1; Morteza Nouralizadeh Otaghsara2
1Plant Protection Research Department, Guilan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Rasht, Iran.
2Plant Protection Research Department, Mazandaran Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Sari, Iran.
Abstract


This experiment was performed to determine the appropriate dose of Cyhalofop-butyl (CB) for controlling grass weeds in transplanted rice. CB at four doses, including 50, 100, 150, and 200 g ai/ha was investigated and compared with current herbicides in rice at recommended doses. The results showed that CB 100, 150, and 200 g ai/ha significantly reduced the density and dry matter of Echinochloa crusgalli (L.) P. Beauv. and Paspalum distichum L. over the weedy check; the minimum control efficacy of CB at these doses was 73.3 and 88.3% for E. crusgalli density and dry matter reduction, respectively, and for P. distichum, it was 80% for density and dry matter reduction. Applying CB at all doses (50- 200 g/ha) showed no crop injury symptoms on rice plants. The highest grain yield was obtained by hand weeding, CB 150 g ai/ha, and Tiobencarb treatments, with 5180, 5106, and 5051 Kg/ha, respectively. CB 200 g ai/ha was on par with CB 150 g ai/ha, and there was no significant variation between CB 100 and 200 g ai/ha in rice grain production. Finally, it was found that the application of CB 100 g ai/ha is an efficient grass weed control practice for improving the rice yield.
Keywords
ACCase; barnyardgrass; knotgrass; Herbicide; Weed control
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