Evaluation of amendments used to prevent sodification of irrigated fields

Brinck, Elizabeth L.; Frost, Carol D.

doi:10.1016/j.apgeochem.2009.09.001

Cited by 39 publications

(26 citation statements)

References 21 publications

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“…Decreases in soil salinity values from 2004 to 2006 were observed for most of the treatments at different soil horizons except CBNG( NT ) +NT and PC( NT )+ S treatments (Table ). Decreases in EC values could be due to leaching of salts, such as solutes occurring naturally as well as introduced in the form of amendments, below the Bt 2 ‐horizon (Tedeschi and Dell'Aquilai, ; Brinck and Frost, ). A comparison among soil amendments in 2006 indicated generally greater EC values for S and GS soil amendments across water treatments.…”

Section: Resultsmentioning

confidence: 99%

“…This data indicates that water amendments may be an effective way of treating CBNG water for managed irrigation. It is also important to note, however, that site characteristics will determine whether it should be considered for irrigation with CBNG water (Vance et al ., ; Zhao et al ., ; Vance and Ganjegunte, ) and the importance of continued amendment application after CBNG‐water application to maintain TEC requirements (Horpestad, ; Brinck and Frost, ).…”

Section: Resultsmentioning

confidence: 99%

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Soil Property Changes Following Irrigation With Coalbed Natural Gas Water: Role of Water Treatments, Soil Amendments and Land Suitability

2011

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Saline‐sodic water is a by‐product of coalbed natural gas (CBNG) production in the Powder River Basin of Wyoming, USA and is being beneficially used in places as irrigation water. This study evaluated effects of 2 years of natural precipitation on soil properties of a hay field after the cessation of managed irrigation with CBNG water. The hay field had been irrigated with only CBNG water [CBNG(NT)], CBNG water amended with gypsum [CBNG(G)] or gypsum plus sulfur via a sulfur burner [CBNG(GSB)] in combination with soil amendments—gypsum (+G), elemental sulfur (+S), and both (+GS). Results indicated that infiltration rates were the lowest on fields irrigated with CBNG(NT), followed by CBNG(G) and CBNG(NT)+G treatments (12·2, 13·2, and 13·5 cm h−1, respectively). The CBNG(GSB)+GS treatment had the highest infiltration rates (33·5 cm h−1). By the second year, salinity and sodicity of treated soils had decreased in the A‐horizon of most CBNG‐water irrigated plots, whereas in Bt1‐ and Bt2‐horizons salinity generally decreased but sodicity increased; S and GS soil amended plots had higher profile salinities compared with NT and G soil treatments. Although Na+ leaching was observed in all fields that received soil and/or water amendments, CBNG(GSB)+GS plots had the lowest sodicity in the A‐ and Bt1‐horizons. Effective managed irrigation requires knowledge of site‐specific soil properties, plant suitability, water chemistry, and amendments that would be needed to treat the CBNG waters and soils. This study indicates the greatest success was realized when using both soil and water amendments. Copyright © 2011 John Wiley & Sons, Ltd.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Soil Property Changes Following Irrigation With Coalbed Natural Gas Water: Role of Water Treatments, Soil Amendments and Land Suitability

2011

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“…Subsequently, salts are leached from the soil profile (Abrol et al, 1988). Extensive research has been conducted over decades with respect to use of chemical amendments to provide Ca 2+ to replace Na + on the exchange sites (Brinck and Frost, 2009;Qadir et al, 2002). Gypsum (CaSO 4 ·2H 2 0) is the most commonly used chemical amendment and its efficiency as a supplier of Ca 2+ to offset Na + on exchange sites has been long studied and is an established technology to remediate saline-sodic soils (Ghafoor et al, 2001;Mace and Amrhein, 2001;Oster et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Leaching and reclamation of a biochar and compost amended saline–sodic soil with moderate SAR reclaimed water

Chaganti

Crohn

Šimůnek

2015

Agricultural Water Management

174

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a b s t r a c tRemediating saline-sodic soils with organic amendments is increasingly seen as a cheaper and sustainable alternative to inorganic materials. The reclamation potential of biochar, biosolids and greenwaste composts applied to a saline-sodic soil was evaluated in a laboratory leaching experiment using moderate SAR reclaimed water. Treatments included biochar, biosolids co-compost, greenwaste compost (all applied at a 75 t ha −1 rate), gypsum (50% soil gypsum requirement), biochar + gypsum, biosolids + gypsum, greenwaste + gypsum and a non-amended control. All treatments were subjected to a one month incubation after which, soils were filled in columns and leached using reclaimed water until 7 PV of water had passed. Cumulative leachate losses of Na + , Ca 2+ , and Mg 2+ were evaluated in addition to soil properties after leaching. Results show that leaching with moderate SAR water was effective in reducing the soil salinity and sodicity of all soils, irrespective of amendment application. However, incorporating biochar and composts significantly enhanced this effect. Salt leaching was higher in soils treated with organic amendments. Cumulative leachate losses of cations were significantly higher from biochar and compost treated soils compared to gypsum and unamended controls. Improvements in soil aggregate stability and saturated hydraulic conductivity were prominent in compost treated soils. After leaching, soil analyses indicated that organic amendments lowered significantly more soil EC e , ESP and SAR than that of the control soils and saturated the exchange complex with Ca 2+ . Soil pH was significantly reduced and CEC was significantly increased in only compost treated soils. Although individual organic amendment applications proved to be significant enough to remediate a saline-sodic soil, combined applications of gypsum and organic amendments were more effective in improving soil properties directly related to sodium removal including sodium leaching, hydraulic conductivity, ESP, and SAR, and therefore could have a supplementary benefit of accelerating the reclamation process.

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“…Brinck and Frost (2009) also indicate that Ca can be mobilized through the addition of H 2 SO 4 . Gypsum reduces deterioration of clay-rich soil structure and improves infiltration rates.…”

Section: Resultsmentioning

confidence: 99%

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Evaluation of amendments used to prevent sodification of irrigated fields

Cited by 39 publications

References 21 publications

Soil Property Changes Following Irrigation With Coalbed Natural Gas Water: Role of Water Treatments, Soil Amendments and Land Suitability

Soil Property Changes Following Irrigation With Coalbed Natural Gas Water: Role of Water Treatments, Soil Amendments and Land Suitability

Leaching and reclamation of a biochar and compost amended saline–sodic soil with moderate SAR reclaimed water

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