Interaction between timings and doses of quindorac in rice

Street, Joe E.; Teresiak, H.; Boykin, Debbie; Allen, Ralph L.

doi:10.1111/j.1365-3180.1995.tb02019.x

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…As a common problem in paddy field, volunteer rice emerges from the previous crop (Gealy and Gressel, 2005;Warwick et. al., 2005;Street et al, 1995) because of shattered seeds or harvest loss. The severity of this global problem in rice production differs depending mostly on the region, cultivating measures and cultivars planted.…”

Section: Introductionmentioning

confidence: 99%

Flooding Treatment Restrains Volunteer Rice Germination and Seedling Growth

Luo¹,

Du²,

Zheng³

et al. 2018

Appl. Ecol. Env. Res.

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Volunteer rice is a global problem in rice production, especially conservation tillage. Here volunteer rice from four rice cultivars viz. Xiangyaxiangzhan, Meixiangzhan, Changnongjing 1 and Yliangyou1173 was treated with different flooding treatments. Two weeks of water flooding were applied at four depths: 2.0-2.5 cm (F1), 3.0-3.5 cm (F2), 4.5-5 cm (F3) and 6.0-6.5 cm (F4). A control was set by maintaining the soil wet as normal farmer practice of this region. It was found volunteer rice germination was more reduced with increased submergence levels, while treatments F3 and F4 both decreased the germination index and germination energy greatly for all rice varieties. Flooding treatments also reduced the seedling rate and inhibited the growth of volunteer seedling. Treatments F3 and F4 decreased seedling rates of Changnongjing 1 and F2 generation of Yliangyou1173 to zero, while the flooding treatment induced the malonaldehyde accumulation and altered the activities of peroxidase, superoxide and catalase in seedlings for all rice varieties. Hence, we suggest 2 -week flooding at soil depth 6 cm after the harvest of early-season rice in South China in order to prevent the harvest loss in late-season rice caused by volunteer rice.

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Section: Introductionmentioning

confidence: 99%

Flooding Treatment Restrains Volunteer Rice Germination and Seedling Growth

Luo¹,

Du²,

Zheng³

et al. 2018

Appl. Ecol. Env. Res.

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“…Quinclorac was first used in rice in late 1992 for the control of propanil-resistant barnyardgrass (Talbert and Burgos 2007). When applied alone or in mixtures, quinclorac provides effective PRE and POST barnyardgrass control (Baltazar and Smith 1994;Street et al 1995;Street and Mueller 1993). Quinclorac may be applied to rice at rates from 0.28 to 0.56 kg ha 21 no later than 40 d before harvest (Anonymous 2010).…”

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confidence: 99%

Effect of Postflood Quinclorac Applications on Commercial Rice Cultivars

Bond

Walker

2012

Weed technol.

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Rice cultivar, growth stage at application, or both may influence rice tolerance to quinclorac. Field studies were conducted to compare the response of five rice cultivars ‘Bowman’, ‘Cheniere’, ‘CL161’, ‘Cocodrie’, and ‘XL723’ to postflood quinclorac applications. Quinclorac at 0.56 kg ai ha−1was applied 2 and 4 wk after flood (WAF). Pooled across quinclorac application timings, no differences in maturity were detected among the cultivars in 2008, but maturity of Cheniere and XL723 were delayed compared with CL161 and Cocodrie in 2007. Maturity of Cheniere and XL723 was delayed in 2007 compared with 2008. Pooled over cultivar, maturity was similar for 2 and 4 WAF applications in 2007 but was delayed for 2 WAF treatments in 2008. Regardless of year, postflood quinclorac applications reduced rough rice yield of all cultivars except Bowman. Cheniere and XL723 had lower rough rice yields compared with other cultivars in 2007; however, in 2008, rough rice yields of Cheniere, CL161, Cocodrie, and XL723 were similar, but still lower, than that of Bowman. Pooled over cultivar, postflood quinclorac reduced rough rice yields more when applied 4 WAF than at 2 WAF during both years. Our results demonstrate that Cheniere and XL723 are less tolerant than Bowman is to postflood quinclorac applications and that all evaluated cultivars are more susceptible to quinclorac applied at later developmental stages. Consequently, if circumstances necessitate a postflood quinclorac application, the herbicide should be applied no later than panicle initiation and should not be applied to Cheniere or XL723.

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