Atividade residual de imazethapyr + imazapic em arroz semeado em rotação com o arroz Clearfield®

Pinto, J.J.O.; Noldin, José Alberto; Sousa, C.P.; Agostinetto, Dirceu; Piveta, Leonard B.; Donida, A

doi:10.1590/s0100-83582011000100023

Cited by 6 publications

(7 citation statements)

References 25 publications

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“…Residues from the label dose (1.0×) reduced by 67 and 76% SDM of IRGA 424 and BRS Querencia, respectively (Figure 5). Similar results were observed under application of imazethapyr + imazapic at the same dose (1 L•ha −1 ) on rice plants not resistant to imidazolinones, where the residual effect resulted in 76% SDM reduction for IRGA 417 [10]. Research reports that the residual activity of imazethapyr + imazapic resulted in SDM reduction for 9 crops among 11 tested [8].…”

Section: (C))supporting

confidence: 73%

“…When non-tolerant rice was grown in soil with 1.0, 1.5 and 2.0× the label dose, SDM accumulation was reduced in 72%, 85% and 92% for imazethapyr + imazapic, and 73%, 86% and 93% for imazapyr + imazapic. In this context, Pinto et al [10] reported imazethapyr + imazapic at doses of 100, 150 and 200 g•ha −1 decreased, respectively, SDM in 76%, 95% and 96% for IRGA 417.…”

Section: (C))mentioning

confidence: 96%

“…Both cultivars were reduced in height as dose was increased, with reductions reaching 51% and 50% at the label dose, while twice the dose (2.0×) reduced plant height in 76% and 75% for IRGA 424 and BRS Querencia, respectively, compared to the control treatment ( Figure 5(B)). Pinto et al [10] found that residues of 1 g•ha −1 of imazethapyr + imazapic reduced by 0.18 cm rice plant height.…”

Section: (C))mentioning

confidence: 99%

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Carryover Effect of Imidazolinone Herbicides for Crops Following Rice

Santos¹,

Pinto²,

Piveta³

et al. 2014

AJPS

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We aimed with this study to evaluate the effects of residual activity in soil of formulated mixtures of the herbicides imazethapyr + imazapic and imazapyr + imazapic on ryegrass and on rice cultivars, IRGA 424 and BRS Querencia. Two experiments were conducted under greenhouse in randomized blocks design with four replications in split-plot and split-split-plot designs, respectively for the first (E1) and second (E2) experiments. For E1, main plots allocated herbicides (imazethapyr + imazapic and imazapyr + imazapic), and subplots the doses [(0, 0.5, 1.0, 1.5 and 2.0 fold the label dose of imazethapyr + imazapic (1 L•ha −1) and imazapyr + imazapic (140 g•ha −1) plus 0.5% of the adjuvant Dash ®)]; for E2, sub-subplots allocated rice cultivars (BRS 424 and IRGA Querência). Phytotoxicity, plant height and shoot dry weight (E1 and E2) and plant stand (E2) were evaluated. Results showed that the annual ryegrass and rice cultivars IRGA 424 and BRS Querencia are sensitive to imazethapyr + imazapic and imazapyr + imazapic, serving as bioindicators of its residual activity in soils following Clearfield ® rice. Imazapyr + imazapic, applied post-emergence in irrigated rice at doses of 1.0, 1.5 and 2.0× the label dose, present longer residual activity in soil compared to imazethapyr + imazapic for ryegrass and non-Clearfield ® rice.

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Section: (C))supporting

confidence: 73%

Section: (C))mentioning

confidence: 96%

Section: (C))mentioning

confidence: 99%

See 1 more Smart Citation

Carryover Effect of Imidazolinone Herbicides for Crops Following Rice

Santos¹,

Pinto²,

Piveta³

et al. 2014

AJPS

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“…An increase in the carryover of imazapyr+imazapic caused a decrease in the height of ryegrass, white clover and bird's foot trefoil plants, planted in succession to irrigated rice (Martins, 2014). The reduction in the height of plants after the application of herbicides from the imidazolinone group was observed in other cultures, such as ryegrass, maize and sorghum (Pinto et al, 2011). Herbicides that inhibit the ALS enzyme are characterized by presenting, among other symptoms, inhibition of growth points and reduction or paralysis of the plant development (Roman et al, 2007).…”

Section: Resultsmentioning

confidence: 97%

Morphological and Metabolic Changes in Soybean Plants Cultivated in Irrigated Rice Rotation and as Affected by Imazapyr and Imazapic Herbicides Carryover

et al. 2019

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The appearance of soybean cultivars that are tolerant to herbicides from the imidazolinone group enables irrigated rice rotation conducted on Clearfield® system. The objective of this work was to evaluate the morphological and metabolic changes of soybean cultivars containing Cultivance® (CV), which is tolerant to imidazolinone, sulphonylurea toletant (STS) and Roundup Ready® (RR), which is tolerant to glyphosate as affected by carryover of increasing doses of imazapyr and imazapic herbicides mixture, applied in the management of irrigated rice crop. Thus, experiments were conducted on the field and in greenhouse, evaluating phytotoxicity, height, leaf area, shoot dry matter, as well as variables related to the secondary metabolism of plants like chlorophyll, carotenoids, hydrogen peroxide, lipid peroxidation and electrolytes leakage. Soybean cultivars RR and STS are susceptibles to the carryover of imazapyr and imazapic mixture applied in the management of irrigated rice crop, whereas the CV cultivar is resistant. The rise in the herbicide carryover dose increases the reactive oxygen species (ROS) production in soybean plants. The RR cultivar, in general, shows higher ROS production compared to the other soybean cultivars.

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“…Studies with cultures that were non-tolerant to herbicides from the imidazolinone group, such as ryegrass, sown in rotation to Clearfield ® rice, proved that the residual effect of these herbicides causes high phytotoxicity at early stages, when the product dose is increased (Süzer and Büyük, 2010;Pinto et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

Response of Soybean Cultivars in Rotation with Irrigated Rice Crops Cultivated in Clearfield® System

et al. 2018

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). The evaluated variables were phytotoxicity, yield components and physiological quality of the seeds. Soybean cultivar BRS382CV is tolerant to herbicide carryover, applied in the management of weedy rice in irrigated rice crops, but the other cultivars are susceptible to it. Cultivar productivity, yield components and physiological quality of the seeds are affected by the carryover increase of the imazapyr and imazapic herbicide mixture. Keywords

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Atividade residual de imazethapyr + imazapic em arroz semeado em rotação com o arroz Clearfield®

Cited by 6 publications

References 25 publications

Carryover Effect of Imidazolinone Herbicides for Crops Following Rice

Carryover Effect of Imidazolinone Herbicides for Crops Following Rice

Morphological and Metabolic Changes in Soybean Plants Cultivated in Irrigated Rice Rotation and as Affected by Imazapyr and Imazapic Herbicides Carryover

Response of Soybean Cultivars in Rotation with Irrigated Rice Crops Cultivated in Clearfield® System

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