A study on Sorghum bicolor (L.) Moench response to split application of herbicides

Kaczmarek, Sylwia

doi:10.1515/jppr-2017-0021

Cited by 2 publications

(2 citation statements)

References 24 publications

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“…However, application of mesotrione with S-metolachlor provided more than 90% control of the weeds evaluated in this study. Similar to our study, Kaczmarek (2017) also recorded the best weed control with the use of a mesotrione tank mixture with S-metolachlor [16].…”

Section: Discussionsupporting

confidence: 89%

Weed Management Programs in Grain Sorghum (Sorghum bicolor)

et al. 2019

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A field study was conducted in Arkansas over three years to evaluate various herbicide treatments, including sequential and tank-mix applications for weed control in grain sorghum (Sorghum bicolor). The herbicide treatments used were quinclorac, atrazine + dimethenamid-p, S-metolachlor followed by (fb) atrazine + dicamba, dimethenamid-p fb atrazine, S-metolachlor + atrazine fb atrazine, S-metolachlor + mesotrione, and S-metolachlor fb prosulfuron. All herbicide treatments provided excellent (90% to 100%) control of Ipomoea lacunosa, Ipomoea hederacea var. integriuscula, and Sida spinosa by 12 weeks after emergence. Quinclorac and S-metolachlor fb prosulfuron provided the lowest control of Ipomoea lacunosa, Urochloa platyphylla, Amaranthus palmeri, and Ipomoea hederacea var. integriuscula. Weed interference in the non-treated control reduced grain sorghum yield by 50% as compared to the weed-free control. S-metolachlor + mesotrione and S-metolachlor fb prosulfuron reduced sorghum yields by 1009 to 1121 kg ha−1 compared to other herbicide treatments. The five best herbicide treatments in terms of weed control and grain sorghum yield were quinclorac, atrazine + dimethenamid-p, S-metolachlor fb atrazine + dicamba, dimethenamid-p fb atrazine, and the standard treatment of S-metolachlor + atrazine fb atrazine.

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Section: Discussionsupporting

confidence: 89%

Weed Management Programs in Grain Sorghum (Sorghum bicolor)

et al. 2019

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“…The results of this research showed that of the preemergence applications, terbuthylazine alone against broadleaves or in mixtures at a low dose with s-metolachlor against mixed infestations (grasses + broadleaves), seemed to be the best options to obtain a good selectivity to the sorghum and a high weed control level. In particular, the mixture terbuthylazine + + s-metolachlor, largely adopted in maize as the main pre-emergence strategy due to its high weed efficacy (Pannacci and Tei 2014;Pannacci and Onofri 2016), could be favourably adopted also sorghum due to its high efficacy against weeds and low phytotoxicity to the crop, as recently observed also by Kaczmarek (2017). Furthermore, the use of this herbicide mixture makes it possible to apply a low dose of terbuthylazine thus respecting the restrictions on the use of this active ingredient, recently implemented by the EU (Regulation 2011).…”

Section: Discussionmentioning

confidence: 83%

Journal of Plant Protection Research

Pannacci¹,

Bartolini²

2018

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Two field experimental trials were carried out in central Italy, in 2005 and 2006, on biomass sorghum [Sorghum bicolor (L.) Moench] in order to assess weed control efficacy and selectivity to the crop of some pre-and post-emergence herbicides applied at different doses and in different mixtures. All herbicides showed good selectivity to the crop, although postemergence treatments showed higher transitory phytotoxicity effects than pre-emergence treatments, especially when high temperatures occurred after treatments, decreasing the selectivity of leaf herbicides (i.e. MCPA, 2,4-D, bromoxynil and dicamba). Considering pre-emergence applications, terbuthylazine alone against broadleaves or in mixtures at low doses with s-metolachlor against mixed infestations (grasses + broadleaves), seemed to be the best options to obtain a good selectivity to the sorghum and a high weed control level. Aclonifen showed some limits in terms of weed spectrum and could be recommended only against simplified broadleaf weed infestations without the presence of less susceptible weeds, like Amaranthus retroflexus, Portulaca oleracea and Solanum nigrum. Propachlor seemed not to be advisable due to the low efficacy against all the major broadleaf warmseason weed species in the Mediterranean areas. Considering post-emergence applications, all treatments gave quite similar results in terms of weed control, although, the mixture of terbuthylazine + bromoxynil seemed to be the best option due to bromoxinil's higher efficacy than other foliar herbicides, such as MCPA, 2,4-D and dicamba, which can increase the efficacy of terbuthylazine alone especially under dry weather conditions. There were no significant differences in sorghum biomass between herbicide treatments, although, the more selective pre-emergence treatments showed, on average, a higher biomass yield value than the less selective post-emergence treatments. For these reasons, biomass values seemed to be more related to herbicide selectivity than to herbicide efficacy, especially in cases of scarce competitiveness of weed flora.

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A study on Sorghum bicolor (L.) Moench response to split application of herbicides

Cited by 2 publications

References 24 publications

Weed Management Programs in Grain Sorghum (Sorghum bicolor)

Weed Management Programs in Grain Sorghum (Sorghum bicolor)

Journal of Plant Protection Research

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