Role of Soil Moisture Content in Reducing Environmental Pollution From Pesticides

Jebellie, S.J.; Prasher, Shiv O.; Clemente, Roberto S.

doi:10.4296/cwrj2104393

Cited by 11 publications

(10 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is well known that the rate of herbicide degradation is slower in subsoil than topsoil (Walker and Welch, 1989). Jebellie et al (1996) reported longer persistence of atrazine in soil at a soil water content of 20% than at 35 or 50%. The D treatment would be expected to have a lower overall soil water content than the CD or CDS treatments because tile drainage was unrestricted in the D treatment.…”

Section: Resultsmentioning

confidence: 91%

“…Jebellie and Prasher (1998) recovered more metribuzin from soil maintained under free drainage than from treatments where water table was controlled at 0.4 or 0.8 m from the soil surface. In another study, metribuzin concentrations were significantly higher ( p < 0.009) in soil incubated at 20% than 50% water content (Jebellie et al, 1996).…”

Section: Resultsmentioning

confidence: 91%

“…Atrazine concentration in drainage was lowest from grass cover with subsurface drainage than from bare soil with controlled drainage, presumably because of the greater water storage capacity available in the drained treatment. Jebellie et al (1996) recovered a significantly larger atrazine concentration from soil maintained at 20% than 50% water content. Atrazine concentration in soil is significantly reduced at higher water contents (Walker, 1991).…”

Section: Resultsmentioning

confidence: 92%

“…Water table control is an emerging technology to increase yield, improve nutrient usage by crops, and reduce off‐site movement of herbicides (Tan et al, 1993; Drury et al, 1996; Jebellie et al, 1996). Some beneficial effects of water table control have been reported.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Runoff and Drainage Losses of Atrazine, Metribuzin, and Metolachlor in Three Water Management Systems

et al. 2002

View full text Add to dashboard Cite

Rainfall can transport herbicides from agricultural land to surface waters, where they become an environmental concern. Tile drainage can benefit crop production by removing excess soil water but tile drainage may also aggravate herbicide and nutrient movement into surface waters. Water management of tile drains after planting may reduce tile drainage and thereby reduce herbicide losses to surface water. To test this hypothesis we calculated the loss of three herbicides from a field with three water management systems: free drainage (D), controlled drainage (CD), and controlled drainage with subsurface irrigation (CDS). The effect of water management systems on the dissipation of atrazine (6-chloro-N2-ethyl-N4-isopropyl-1,3,5-triazine-2,4-diamine), metribuzin [4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazine-5(4H)-one), and metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide] in soil was also monitored. Less herbicide was lost by surface runoff from the D and CD treatments than from CDS. The CDS treatment increased surface runoff, which transported more herbicide than that from D or CD treatments. In one year, the time for metribuzin residue to dissipate to half its initial value was shorter for CDS (33 d) than for D (43 d) and CD (46 d). The half-life of atrazine and metolachlor were not affected by water management. Controlled drainage with subsurface irrigation may increase herbicide loss through increased surface runoff when excessive rain is received soon after herbicide application. However, increasing soil water content in CDS may decrease herbicide persistence, resulting in less residual herbicide available for aqueous transport.

show abstract

Section: Resultsmentioning

confidence: 91%

Section: Resultsmentioning

confidence: 91%

Section: Resultsmentioning

confidence: 92%

mentioning

confidence: 99%

See 2 more Smart Citations

Runoff and Drainage Losses of Atrazine, Metribuzin, and Metolachlor in Three Water Management Systems

et al. 2002

View full text Add to dashboard Cite

show abstract

“…To further investigate these findings, a laboratory investigation was carried out in 1995 to study metolachlor degradation with various soil moisture contents (Jebellie et al, 1996). This experiment was conducted in a laboratory at 2 PC 2°C, and metolachlor was spiked to a sandy soil with various soil moisture levels representing different soil moisture regimes in the field 110 experiment.…”

Section: Metolachlor Residues In Soil In 1995mentioning

confidence: 99%

Fate of metolachlor under subirrigation in a sandy soil: A lysimeter study

Jebellie

Prasher

Bassi

2000

Journal of Environmental Science and Health, Part B

View full text Add to dashboard Cite

A three-year field lysimeter study was conducted to investigate the role of subirrigation systems in reducing the risk of water pollution from metolachlor (2-chloro-N-(2-ethyl-6-methlphenyl)-N-(2-methoxy-1-methylethyl)ace tamide). Nine large PVC lysimeters, 1 m long x 0.45 m diameter, were packed with a sandy soil. Three water table management treatments, i.e. two subirrigation treatments with constant water table depths of 0.4 and 0.8 m, respectively, and a free drainage treatment in a completely randomized design with three replicates were used. Corn (Zea mays L.) was grown in each lysimeter, and at the beginning of summer of each year metolachlor was applied, at the locally recommended rate of 2.75 kg a.i./ha. Soil and water samples were collected at different time intervals after each natural or simulated rainfall event. Metolachlor was extracted from these samples and analyzed using Gas Chromatography. Results obtained in this three year study, (1993-1995), lead to the conclusion that metolachlor is quite mobile since it leached to a depth of 0.85 m below the soil surface quite early in the growing season. Metolachlor concentrations decreased with depth as well as with time. The shallower water table in the 0.4 m subirrigation treatment showed less residues in the soil solution than that of other treatments. However, a mass balance study, supported by an independent laboratory investigation, shows that water table management, statistically, has no significant effect on the reduction of metolachlor residues in sandy soils.

show abstract

Impact of Climate Variability on the Use and Exposure of Pesticides in Sugarcane Production in Malawi

Donga

Meadow

Sitaula

et al. 2020

Climate Impacts on Agricultural and Natural Resource Sustainability in Africa

View full text Add to dashboard Cite

Role of Soil Moisture Content in Reducing Environmental Pollution From Pesticides

Cited by 11 publications

References 6 publications

Runoff and Drainage Losses of Atrazine, Metribuzin, and Metolachlor in Three Water Management Systems

Runoff and Drainage Losses of Atrazine, Metribuzin, and Metolachlor in Three Water Management Systems

Fate of metolachlor under subirrigation in a sandy soil: A lysimeter study

Impact of Climate Variability on the Use and Exposure of Pesticides in Sugarcane Production in Malawi

Contact Info

Product

Resources

About