Effect of synthetic and natural water absorbing soil amendment soil physical properties under potato production in a semi-arid region

Xu, Shixiao; Zhang, Lei; McLaughlin, Neil; Mi, Junzhen; Chen, Qin; Liu, Jinghui

doi:10.1016/j.still.2014.10.002

Cited by 75 publications

(55 citation statements)

References 46 publications

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“…). This is agreement with our previous result that soil amendments improved fresh tuber yield . It is also consistent with previous research which found that corn dry biomass was improved with hydrophilic polymer and that biochar amendment increased crop productivity .…”

Section: Discussionsupporting

confidence: 94%

“…). The different effects of the soil amendments at different growing stages may be due to the extreme weather conditions (low precipitation) in some years . Apparently, the crop limited shoot growth and enhanced root growth to mitigate the drought stress, thus increasing crop R/S ratio .…”

Section: Discussionmentioning

confidence: 99%

“…This seems to be counterproductive, as increased Tr will normally exacerbate the local water scarcity in a semi‐arid region. However, soil amendment increased both soil water storage and water use efficiency . Semi‐arid areas typically have soils with low water‐ and nutrient‐holding capacity, so water‐holding soil amendments can contribute to sustainable agriculture in these areas by improving water storage and water use efficiency.…”

Section: Discussionmentioning

confidence: 99%

“…There were six treatments: CK, control with no amendment application; T1, 45 kg ha −1 PAA; T2, 45 kg ha −1 PAA + 1500 kg ha −1 HA; T3, 45 kg ha −1 PAM; T4, 45 kg ha −1 PAM + 1500 kg ha −1 HA; T5, 1500 kg ha −1 HA. A description of all three soil amendments was provided in our previous paper . The rate of different soil amendments was determined via previous unpublished results obtained by our laboratory.…”

Section: Methodsmentioning

confidence: 99%

“…Harvest was 130 days after sowing on 22 September 2010 and 24 September 2011 and 110 days after sowing on 1 September 2012; harvest was 20 days earlier in 2012 owing to an early killing frost on 21 August. Precipitation was 232.5, 183.5 and 214.8 mm in 2010, 2011 and 2012 respectively; details on the distribution of rainfall were provided in our previous paper …”

Section: Methodsmentioning

confidence: 99%

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Effect of synthetic and natural water‐absorbing soil amendments on photosynthesis characteristics and tuber nutritional quality of potato in a semi‐arid region

Zhang

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et al. 2015

J Sci Food Agric

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Section: Discussionsupporting

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Effect of synthetic and natural water‐absorbing soil amendments on photosynthesis characteristics and tuber nutritional quality of potato in a semi‐arid region

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Long‐term water retention increases in degraded soils amended with cross‐linked polyacrylamide

Lentz

2020

Agronomy Journal

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Cross‐linked polymer hydrogels, polyacrylamide co‐polymer (XPAM), and K‐polyacrylate (XPAA) increase soil water availability under drought, but their long‐term effects are unknown despite the importance of such knowledge in assessing economic feasibility. This 9‐yr outdoor pot study evaluated a one‐time addition of XPAM or XPAA at 0.25 or 0.5% dry weight (5.6 or 11.2 Mg ha−1) in a degraded calcareous silt loam. Controls included an unamended degraded soil and an unamended nondegraded soil (topsoil). Soil water retention and plant available water (PAW, g water g−1 dry soil−1) were measured in soil samples collected in spring for seven of the nine years. Across all years, the 0.5% XPAM produced the greatest PAW (0.318) and the PAW of other treatments followed in the order: 0.5% XPAM > 0.25% XPAM > Topsoil > 0.5% XPAA > 0.25% XPAA = control (0.224). In all years, the 0.25% XPAM and 0.5% XPAM treatments increased soil PAW relative to the control, that is, their PAW ratios exceeded unity. Topsoil PAW exceeded that of the control in six of the seven years measured. The PAW of 0.25% XPAM and 0.5% XPAM peaked in Year 1 after application and declined linearly with time (P < .03), at −0.0036 yr−1 and −0.0044 yr−1, respectively. Hence, the mean residence time the XPAM‐related water‐retention benefit is 24–29 yr. In this study, soil water‐retention benefits from XPAM amendments exceeded projections proposed by the industry (5 yr) and suggests that the cost‐benefits of field‐level XPAM applications might be more favorable than previously anticipated.

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Improvement of aeolian sandy soil in Mu Us, China with soft montmorillonite clay stone

Zhang

Guo

et al. 2021

Agronomy Journal

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Aeolian sandy soil, common in Mu Us, China has poor structure and water holding capacity. The soft montmorillonite clay stone was used to adjust the structure and characteristics of sand soil. In this study, the soft montmorillonite clay stone was mixed with sand in the volume ratios of 1:1, 1:2, and 1:5. Soil texture, organic matter content (OMC), and effects on crop yield from 2010 to 2018 were determined. When corn (Zea mays L.) was planted, the clay content, fractal dimension (FD), and OMC of the 1:2 compound soil showed a steadily increasing trend with a higher rate than the 1:1 and 1:5 compound soil. When potato (Solanum tuberosum L.) was planted, the increasing rates of the FD and OMC were largest in the 1:5 compound soil. Potato planting increased the FD of the soil particles by 15.3%, and the OMC was 13.76 times higher than it was prior to planting. Corn and potato crops had the largest sustainable yield index (SYI) and average yield, and the smallest coefficient of variation (CV) in the 1:2 and 1:5 compound soils, respectively. This indicated that 1:2 and 1:5 compound soils allowed for the highest yield stability and sustainability. The 1:2 and 1:5 compound soils were suitable for corn and potato growth, and the compound soil properties exhibited a sustainable and stable development trend. Therefore, this indicates that 1:2-1:5 compound ratios can be used as the optimum sand clay ratios for improving the characteristics of aeolian sandy soil using soft rock.

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Effect of synthetic and natural water absorbing soil amendment soil physical properties under potato production in a semi-arid region

Cited by 75 publications

References 46 publications

Effect of synthetic and natural water‐absorbing soil amendments on photosynthesis characteristics and tuber nutritional quality of potato in a semi‐arid region

Effect of synthetic and natural water‐absorbing soil amendments on photosynthesis characteristics and tuber nutritional quality of potato in a semi‐arid region

Long‐term water retention increases in degraded soils amended with cross‐linked polyacrylamide

Improvement of aeolian sandy soil in Mu Us, China with soft montmorillonite clay stone

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