Factors Affecting Thiocarbamate Injury to Corn II. Soil Incorporation, Seed Placement, Cultivar, Leaching, and Breakdown

Burt, G. W.

doi:10.1017/s0043174500066078

Cited by 16 publications

(18 citation statements)

References 4 publications

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“…A performance do dichlormid pode ser afetada pelo método de incorporação ao solo, assim como pela forma em que a semente é tratada, tipo de equipamento utilizado na semeadura e comportamento do herbicida a ser utilizado (Burt, 1976). Nesse sentido, Burt & Buzio (1980) mencionaram diferença no grau de solubilidade entre o EPTC e o dichlormid causada pela lixiviação dos dois componentes com remoção das substâncias químicas da zona tratada em diferentes proporções na presença de chuvas pesadas ou irrigação, causando danos às plantas cultivadas (sorgo e arroz) e protegendo as plantas daninhas do efeito herbicida.…”

Section: Limitações De Usos De Safeners Como Protetores Químicosunclassified

Seletividade de herbicidas às culturas pelo uso de protetores químicos

Galon¹,

Maciel

Agostinetto³

et al. 2011

RBHerbicidas

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Resumo-Protetores químicos podem ser utilizados para aumentar a tolerância de culturas a herbicidas, sendo aplicados como tratamento de sementes, em mistura ou formulado juntamente com o herbicida. Os mecanismos de ação dos protetores, conhecidos como safeners, estão relacionados à redução da absorção e/ou translocação, a metabolização e a competição com o local de ação dos herbicidas. Os objetivos desta revisão foram descrever formas de utilização, modo de ação, limitações e perspectivas futuras na utilização de safeners como ferramenta visando aumentar a seletividade. O uso de safeners permite obter controle mais eficiente das plantas daninhas, por proporcionar tanto o aumento de doses dos compostos que apresentam impacto significativo sobre a cultura, como pelo uso de herbicidas não seletivos às culturas, tornando-as mais seguras a aplicação e aumentando o espectro de controle de plantas daninhas. Por outro lado, o uso de safeners visando elevar a dose aplicada dos herbicidas, além das estabelecidas nos respectivos registros, pode acarretar a maximização da contaminação ambiental, das culturas e também do aplicador.

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Section: Limitações De Usos De Safeners Como Protetores Químicosunclassified

Seletividade de herbicidas às culturas pelo uso de protetores químicos

Galon¹,

Maciel

Agostinetto³

et al. 2011

RBHerbicidas

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show abstract

“…EPTC and R-25788 are known to decompose in the soil at similar rates (3,17). In time, however, they may become separated in the soil profile because R-25788 moves more readily during leaching or drying (3,6,17). Thomas and Gray (17) found that the half-life of R-25788 at 27 C was 8 days in Sorrento loam and 9 days in Felton loamy sand.…”

Section: Introductionmentioning

confidence: 99%

“…Dent corn inbreds were most susceptible to EPTC even when R-25788 was present. Dif ferences in response to EPTC treatment were thought to be due to genetic variation 3 .…”

Section: Introductionmentioning

confidence: 99%

Responses of Several Corn (Zea mays) Cultivars and Weed Species to EPTC With and Without the Antidote R-25788

Sagaral

Foy

1982

Weed sci.

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Field experiments were conducted to determine the effectiveness of the herbicide antidote R-25788 (N,N-diallyl-2,2-dichloroacetamide) in protecting corn (Zea maysL.) cultivars from EPTC (S-ethyl dipropylthiocarbamate) injury. Preplant-incorporated applications of EPTC, with and without R-25788, were made to a fine sandy loam in 1976 and a loamy sand soil in 1977. EPTC at 6.7 kg/ha was 20 to 30% more injurious to the susceptible cultivars grown in sandy, lower organic-matter soil than in fine sandy loam. R-25788 did not decrease the weed-control efficacy of EPTC. The cultivar ‘TXS114’ was highly tolerant to EPTC at 6.7 kg/ha with or without antidote protection. Most of the other EPTC-susceptible cultivars showed significant stand improvement when R-25788 was used in combination with EPTC. R-25788 did not alleviate EPTC phytotoxicity toward ‘XL55’ and ‘XL379’ cultivars. EPTC applied in combination with R-25788 showed no, or only, slight injury to all other cultivars.

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“…Alachlor, EPTC + R-25788, and vernolate + R-25788 usually control weeds selectively in sweetcorn (12,13); however, these herbicides occasionally injure the crop (1,2,4,5,6,14,18). R-25788 is a physiologically selective anti dote that protects corn from thiocarbamate herbicides under most conditions (9).…”

Section: Introductionmentioning

confidence: 99%

Response of Sweetcorn (Zea mays) to Alachlor, EPTC + R-25788, and Vernolate + R-25788

Drake¹

1982

Weed sci.

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Alachlor [2-chloro-2′,6′-diethyl-N-(methoxymethyl)acetanilide] at 6.7 kg/ha, twice the recommended rate, stunted early-season growth of ‘Jubilee,’ ‘Commander,’ and 'Stylepak’ sweetcorn (Zea maysL.) 9 to 15%, reduced plant populations of Commander and Stylepak 12 to 15%, reduced the kernel yield of Jubilee and Stylepak 14 to 16%, and delayed ripening of Jubilee and Stylepak by 2 or 3 days. Alachlor at 3.4 kg/ha slowed early-season growth of Jubilee and Stylepak, but reduced yield and delayed ripening of only Jubilee. EPTC (S-ethyl dipropylthiocarbamate) + R-25788 (N,N-diallyl-2,2-dichloracetamide) and vernolate (S-propyl dipropylthiocarbamate) + R-25788 at 4.5 + 0.4 or 9.0 + 0.8 kg/ha did not reduce the growth, yield, or quality of the three sweetcorn cultivars. Planting date did not influence the response of sweetcorn to the herbicides. In these experiments, none of these herbicides injured sweetcorn severely, as has sometimes occurred in commercial fields.

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Factors Affecting Thiocarbamate Injury to Corn II. Soil Incorporation, Seed Placement, Cultivar, Leaching, and Breakdown

Cited by 16 publications

References 4 publications

Seletividade de herbicidas às culturas pelo uso de protetores químicos

Seletividade de herbicidas às culturas pelo uso de protetores químicos

Responses of Several Corn (Zea mays) Cultivars and Weed Species to EPTC With and Without the Antidote R-25788

Response of Sweetcorn (Zea mays) to Alachlor, EPTC + R-25788, and Vernolate + R-25788

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