Soil Persistence of Dinitramine

Poku, J. A.; Zimdahl, Robert L.

doi:10.1017/s0043174500061439

Cited by 14 publications

(4 citation statements)

References 18 publications

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“…Similarly, Barrett and Lavy (1983) reported rapid pendimethalin dissipation during the first 14 d after application. The initial rapid dissipation of other soil applied dinitroanilines has been previously reported (Poku and Zimdahl 1980;Serrano et al 2010;Zimdahl and Gwynn 1977). The rapidly dissipated fraction of pendimethalin does not contribute greatly to weed control; therefore, it is the second phase of dissipation that is important for weed management (Shaner 2012).…”

Section: Resultsmentioning

confidence: 76%

Dissipation of Pendimethalin in Organic Soils in Florida

Odero

Shaner

2014

Weed technol.

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Understanding the persistence of PRE-applied pendimethalin is important in determining timing of subsequent weed management programs in sugarcane on organic soils in the Everglades Agricultural Area (EAA). Dissipation of oil- and water-based pendimethalin formulations applied PRE at 2, 4, and 8 kg ai ha−1were compared in 2011 and 2012 on organic soils in the EAA. The rate of dissipation of both formulations was very similar. Both formulations had an initial rapid rate of dissipation followed by a slower rate of dissipation. However, the initial amount of pendimethalin in the soil was higher with the water-based compared to the oil-based formulation, most likely because of the lower volatility of the water-based formulation. The half-lives (DT50s) of the oil-based formulation were 32, 18, and 10 d and 8, 8, and 12 d at 2, 4, and 8 kg ha−1, respectively, in 2011 and 2012, respectively. The DT50s of the water-based formulation were 20, 13, and 10 d and 12, 12, and 14 d at 2, 4, and 8 kg ha−1, respectively in 2011 and 2012, respectively. These DT50values were attributed to low soil water content as well as the absence of incorporation following application. Our results suggest that dissipation of pendimethalin is rapid on organic soils irrespective of the formulation when applied under dry soil conditions with no incorporation into the soil.

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Section: Resultsmentioning

confidence: 76%

Dissipation of Pendimethalin in Organic Soils in Florida

Odero

Shaner

2014

Weed technol.

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“…A lack of fit test (P = 0.01), the Durbin-Watson statistic (1), which tests for first-order autocorrelation, and residual plots (1) were used to verify the model. The first-order kinetic model used by others (4,10,15,17) resulted in a significant lack of fit. Attempts to divide degradation into two first-order processes (17) also failed.…”

Section: Resultsmentioning

confidence: 98%

Degradation of Pendimethalin in Soil

1984

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Pendimethalin [N-(1-ethylpropyl)-3,4-dimethyl-2,6-dinitrobenzenamine] degradation in three soils did not follow first-order kinetics but could be described by a quadratic model. Degradation increased as soil temperature increased in the order 10, 20, 35, and 30C. The rate was the same as 75 and 100% field capacity but slower at 50%. At the same temperature and soil moisture the influence of soil type was small. Based on chemical analysis of soil from field and laboratory studies, the half-life was approximately 47 days. Based on biological analyses of soil, the half-life was 78 to 111 days.

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“…Abbreviations: WAP, weeks after planting. from season to season according to changing environmental conditions, such as soil moisture and temperature, which influence herbicide persistence (3,11,16). Degradation of pendimethalin [A^(l-ethylpropyl)-3,4-dimethyl-2,6dimttobenzenamine] in soil decreased when temperature and moisture decreased (19).…”

Section: Potential For Herbicide Injury To Rotational Crops May Changementioning

confidence: 99%

Rotational Crop Response to Chlorimuron, Clomazone, and Imazaquin Applied the Previous Year

Monks¹,

Banks²

1991

Weed sci.

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Experiments to determine effects of chlorimuron, clomazone, and imazaquin applied the year before planting corn, cotton, and sorghum were conducted at three locations in Georgia. Corn injury was <20% in 1987 and 1988 and yield was not affected. In 1988, imazaquin applied at a high rate or sequentially the previous year to late-planted soybeans injured corn more than applications to the early-planted soybeans. Cotton was the most sensitive crop to herbicides applied the previous year. However, seed cotton yield was not decreased due to herbicides applied the previous year. Sorghum growth and yield 8 weeks after planting was not affected by soybean herbicide application the previous year. Sicklepod, corn, and wheat bioassays did not detect any of the herbicides in soil samples obtained the season after treatment. Bioassays accurately predicted potential injury in corn and sorghum but not cotton.

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Soil Persistence of Dinitramine

Cited by 14 publications

References 18 publications

Dissipation of Pendimethalin in Organic Soils in Florida

Dissipation of Pendimethalin in Organic Soils in Florida

Degradation of Pendimethalin in Soil

Rotational Crop Response to Chlorimuron, Clomazone, and Imazaquin Applied the Previous Year

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