scholarly journals Supplementary material to "Quantifying organic matter and functional groups in particulate matter filter samples from the southeastern United States, part I: Methods"

2019 ◽  
Author(s):  
Alexandra J. Boris ◽  
Satoshi Takahama ◽  
Andrew T. Weakley ◽  
Bruno M. Debus ◽  
Carley D. Fredrickson ◽  
...  
Keyword(s):  
United States ◽  
Organic Matter ◽  
Particulate Matter ◽  
Functional Groups ◽  
Southeastern United States ◽  
Supplementary Material

Adsorption, dissipation, and movement of fluometuron in three southeastern United States soils

Weed Science ◽  
1997 ◽  
Vol 45 (1) ◽  
pp. 183-189 ◽  
Author(s):  
William T. Willian ◽  
Thomas C. Mueller ◽  
Robert M. Hayes ◽  
Charles E. Snipes ◽  
David C. Bridges
Keyword(s):  
United States ◽  
Organic Matter ◽  
Soil Profile ◽  
Soil Depth ◽  
Southeastern United States ◽  
Clay Content ◽  
Field Conditions ◽  
Laboratory Conditions ◽  
Controlled Conditions ◽  
Field And Laboratory Conditions

Fluometuron adsorption and dissipation under field and laboratory conditions, and distribution within the soil profile was determined in 3 soils from Tennessee, Mississippi, and Georgia that are representative of the cotton-growing regions of the southeastern United States. Fluometuron adsorption was correlated with organic matter, but not with clay content or soil pH. First-order kinetics explained fluometuron dissipation under field and controlled conditions (r2≥ 0.82). Field dissipation of fluometuron was slower under dry conditions. Fluometuron was not detected below 15 cm in the soil profile in any soil, and concentrations in the 8- to 15-cm soil zone were < 15 ppbw 112 d after treatment. Fluometuron dissipation was more rapid in soil from the 0- to 8-cm depth in Tennessee soil than in Mississippi soil under controlled conditions. Dissipation was more rapid under field conditions than under laboratory conditions at 2 of 3 locations. Fluometuron half-lives in soils from the 0- to 8-cm depth ranged from 9 to 28 d under field conditions and from 11 to 43 d in the laboratory. Fluometuron dissipation in soils from 30- to 45- and 60- to 90-cm depths was not different among soils, with half-lives ranging from 58 to 99 d under laboratory conditions. Fluometuron half-life was positively correlated with soil depth and inversely correlated with organic matter. These data indicate that organic matter, soil depth, and environmental conditions affect fluometuron dissipation.

scholarly journals Gulf wireworm, Conoderus amplicollis (Gyllenhal) (Insecta: Coleoptera: Elateridae)

EDIS ◽  
2020 ◽  
Vol 2019 (4) ◽  
pp. 6
Author(s):  
Mohammad Razzak ◽  
Dakshina Seal
Keyword(s):  
United States ◽  
Organic Matter ◽  
Sweet Potato ◽  
Southeastern United States ◽  
Soil Types ◽  
Click Beetles ◽  
High Organic Matter ◽  
Important Pest

Larvae of click beetles are known as wireworms because of their wire like appearance. The Gulf wireworm, Conoderus amplicollis, is a polyphagous pest mostly found in soil with high organic matter. In the southeastern United States, it is an important pest of sweet potato and can be found in all growing regions irrespectiveof soil types.

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