Efficacy of Pyrithiobac and Bromoxynil Applied with Low-Volume Spray Systems

Tredaway, Joyce A.; Patterson, Michael G.; Wehtje, Glenn

doi:10.1017/s0890037x00043335

Cited by 7 publications

(10 citation statements)

References 5 publications

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“…], pitted morningglory, palmleaf morningglory (Ipomoea wrightii Gray), and smallflower morningglory [Jacquemontia tamnifolia (L.) Griseb.] York 1997, 2000;Jordan et al 1993bJordan et al , 1993cSmith et al 1996;Sunderland and Coble 1994;Tredaway et al 1997).…”

Section: Introductionmentioning

confidence: 99%

Trifloxysulfuron Plus Pyrithiobac Mixtures for Broadleaf Weed Control in Cotton (Gossypium hirsutum)

et al. 2006

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Studies were conducted in 1999, 2000, and 2001 to evaluate broadleaf weed control in cotton from POST applications of trifloxysulfuron plus pyrithiobac. Trifloxysulfuron was applied at 2.5, 5, and 7.5 g ai/ha, and pyrithiobac was applied at 0, 17, and 35 g ai/ha in a factorial treatment arrangement. Cotton injury was affected by rates of both herbicides at 7 and 14 d after treatment (DAT) with injury ranging from 19 to 26%. Broadleaf weed control at 28 DAT from mixtures of the herbicides was generally commercially acceptable. Combinations of 17 or 35 g/ha pyrithiobac plus trifloxysulfuron controlled common ragweed, velvetleaf, common lambsquarters, annual morningglory species (ivyleaf morningglory, pitted morningglory, and tall morningglory), common cocklebur, spurred anoda, and jimsonweed at least 73% at 28 DAT. Trifloxysulfuron applied alone failed to control velvetleaf, spurred anoda, and jimsonweed. Cotton yield reflected weed control and yields increased with pyrithiobac rates. It is concluded that the spectra of the weeds controlled by trifloxysulfuron and pyrithiobac were highly complementary in these studies.

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Section: Introductionmentioning

confidence: 99%

Trifloxysulfuron Plus Pyrithiobac Mixtures for Broadleaf Weed Control in Cotton (Gossypium hirsutum)

et al. 2006

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“…Hill], Pennsylvania smartweed (Polygonum pensylvanicum L.), entireleaf morningglory, pitted morningglory, palmleaf morningglory (Ipomoea wrightii Gray), and smallflower morningglory [Jacquemontia tamnifolia (L.) Griseb.] York 1997, 1998;Jordan et al 1993aJordan et al , 1993bNezu et al 1999;Paulsgrove and Wilcut 2001;Sunderland and Coble 1994;Tredaway et al 1997). Pyrithiobac does not provide complete weed control in cotton and may not control sicklepod, tall morningglory, common ragweed, and common lambsquarters (Culpepper and York 1997;Jordan et al 1993a;Sunderland and Coble 1994).…”

mentioning

confidence: 99%

Preemergence Herbicides Followed by Trifloxysulfuron Postemergence in Cotton

Richardson¹,

Wilson²,

Hines³

2007

Weed technol.

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Field studies were conducted in 1999, 2000, and 2001 to evaluate weed control and cotton response from PRE herbicides followed by (fb) trifloxysulfuron POST. In the first study, trifloxysulfuron at 3.8, 7.5, or 15 gai/ha was applied POST with or without pendimethalin at 690 gai/ha applied PRE in a factorial treatment arrangement. Visible crop injury occurred after all trifloxysulfuron applications, but injury was not affected by application of pendimethalin PRE. Cotton injury was 19 to 22% 7 d after POST treatment (DAT) from trifloxysulfuron at 3.8 to 15 g/ha but was 5 to 12% 28 DAT. Trifloxysulfuron controlled smooth pigweed, common ragweed, and common cocklebur, but spurred anoda, large crabgrass, goosegrass, and stinkgrass were not controlled by trifloxysulfuron. Morningglory species (tall morningglory, ivyleaf morningglory, and pitted morningglory) control with trifloxysulfuron at 7.5 and 15 g/ha was at least 79%, whereas velvetleaf was controlled 66% over all years. In a second study, clomazone, pendimethalin, pendimethalin plus fluometuron, pyrithiobac, or flumioxazin were applied PRE fb 7.5 g/ha trifloxysulfuron POST. Cotton injury from PRE herbicides fb trifloxysulfuron was 13 to 39% 7 DAT. Spurred anoda control exceeded 54% only with treatments that included flumioxazin or pyrithiobac PRE. Common lambsquarters, common cocklebur, and morningglory species were controlled at least 75% with all treatments that included trifloxysulfuron POST, whereas pendimethalin and clomazone usually controlled annual grasses. In both studies, the application of pendimethalin PRE controlled annual grass species and improved control of smooth pigweed and common lambsquarters over that controlled by trifloxysulfuron POST without a PRE herbicide.

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“…No entanto, Bryson et al (1990) observaram que a eficiência do MSMA no controle desta espécie de planta daninha foi maior quando o herbicida foi aplicado em baixo volume de calda (19 L ha -1 ), em uma emulsão invertida, do que em aplicação tradicional (187 L ha -1 ). Tredaway et al (1997) obtiveram o mesmo nível de controle para Ipomoea hederacea e Ipomoea lacunosa com a mistura de MSMA + pyrithiobac, quando aplicados com "air-assist system" com volume de aplicação de 26 L ha -1 ou de maneira convencional (140 L ha -1 ). Em relação à adição de surfatantes, os dados observados estão de acordo com os encontrados por McWhorter et al (1987), os quais não constataram aumento na eficiência de controle para Sorghum halepense e Xanthium strumarium pela adição do adjuvante ácido húmico tipo ácido poliidróxido polimérico (PPA) ao MSMA.…”

Section: Dezembro Janeirounclassified

Efeitos do volume de calda de aplicação e adição de surfatantes organossiliconados na eficiência do MSMA no controle de tiririca

Procópio

Neto²,

Siqueira³

et al. 2002

Planta daninha

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O objetivo desta pesquisa foi avaliar a eficiência do herbicida MSMA no controle da planta daninha tiririca (Cyperus rotundus), quando aplicado com diferentes volumes de calda, associado ou não a surfatantes to tipo organossiliconados. Os tratamentos, dispostos no delineamento de blocos casualizados com quatro repetições, foram: MSMA (2,4 kg ha-1), MSMA (2,4 kg ha¹ + surfatante organossiliconado [marca comercial Silwet L-77] 0,05% v/v) e MSMA (2,4 kg ha-1 + surfatante organossiliconado [marca comercial Break Thru] 0,05% v/v), aplicados em quatro volumes de calda (100, 200, 300 e 400 L ha-1), e duas testemunhas (capinada e sem capina). A pressão de trabalho do pulverizador (3,0 kgf cm-2) foi mantida constante durante as aplicações, para todos os tratamentos. No momento das aplicações as manifestações epígeas de tiririca apresentavam em média oito folhas. O surfatante marca comercial Silwet L-77 mostrou tendência de acelerar a toxidez do MSMA sobre a parte aérea da tiririca; todavia, variações do volume de calda aplicado por hectare com adição ou não de surfatantes organossiliconados não incrementaram o controle dessa planta daninha. O MSMA proporcionou apenas controle regular da tiririca (60-70%).

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Efficacy of Pyrithiobac and Bromoxynil Applied with Low-Volume Spray Systems

Cited by 7 publications

References 5 publications

Trifloxysulfuron Plus Pyrithiobac Mixtures for Broadleaf Weed Control in Cotton (Gossypium hirsutum)

Trifloxysulfuron Plus Pyrithiobac Mixtures for Broadleaf Weed Control in Cotton (Gossypium hirsutum)

Preemergence Herbicides Followed by Trifloxysulfuron Postemergence in Cotton

Efeitos do volume de calda de aplicação e adição de surfatantes organossiliconados na eficiência do MSMA no controle de tiririca

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