Temporal variation of soil nutrients under the influence of different organic amendments

Das, Piw; Pal, Raktim; Bhattacharyya, Pradip

doi:10.1080/03650340.2010.540011

Cited by 16 publications

(11 citation statements)

References 34 publications

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“…This means that soil pH decreased as the N rate of M and F addition increased. Our findings are consistent with previous reports of decreased soil pH with increasing rates of ammoniacal N fertilizer used (Mikha et al, 2006; Fageria et al, 2010; Das et al, 2012).…”

Section: Resultssupporting

confidence: 93%

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Remediation/Restoration of Degraded Soil: I. Impact on Soil Chemical Properties

Mikha¹,

Benjamin²,

Stahlman

et al. 2014

Agronomy Journal

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Nutrient dynamics in the calcareous eroded soils of the western United States may react di erently than the acid soils in the eastern United States. e objectives of this study were to evaluate the impact of tillage practices and N treatments on changes in soil nutrient constituents. e eroded study was initiated in 2006 at the Agriculture Research Center, Hays, KS, on an Armo silt loam ( ne-loamy, mixed, mesic Entic Haplustolls). Tillage practices were no-tillage (NT) and conventional tillage (CT). Beef manure (M) and urea, as commercial fertilizer (F) at low (L) and high (H) rates were applied as N sources. e control (C) treatment, with no N added, was included under both tillage practices. Annually (2006-2011) spring soil samples were taken at 0-to 15-cm and 15-to 30-cm depths. Soil chemical properties were in uenced by N treatments and sampling depths, but not by tillage. Soil acidity (pH) was reduced in 2011 compared with 2006. Relative to control, more reduction in soil pH was observed with HM (21%) compared with HF treatment. Soil EC with HM and HF was approximately 2.2 times greater than LM and LF. Soil extractable P with HM substantially increased, 45.9 mg kg -1 , compared with LM, 18.3 mg kg -1 , at the surface 0 to 15 cm. e change in soil organic carbon (ΔSOC) associated with M was 36-fold higher than F treatments. In general, the use of M as N source improved soil nutrient dynamics in this eroded site compared with F.

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Section: Resultssupporting

confidence: 93%

“…1B). This data agrees with previous reports that an increase in soil EC occurred as the rates of ammoniacal fertilizer and manure increased (Chang et al, 1991; Turner et al, 2010; Das et al, 2012). After 5 yr of continuous manure applications, soil EC reached a maximum value of 0.84 dS m –1 for HM treatment in 2011 (Tables 3).…”

Section: Resultssupporting

confidence: 93%

Remediation/Restoration of Degraded Soil: I. Impact on Soil Chemical Properties

Mikha¹,

Benjamin²,

Stahlman

et al. 2014

Agronomy Journal

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“…The fresh manure rich with labile C and N fractions added every two years could contribute to the soil pH reduction compared with DT-6, where the labile C and N fractions could be less available for microbial activity and their denitrification and respiration processes. Overall, our results are consistent with previously reported research of decreasing soil pH with increasing N rates [ 12 , 32 – 33 ] regardless to the tillage treatments.…”

Section: Discussionsupporting

confidence: 93%

Manure and tillage use in remediation of eroded land and impacts on soil chemical properties

Mikha¹,

Benjamin²,

Vigil³

et al. 2017

PLoS ONE

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Soil loss through wind and water erosion is an ongoing problem in semiarid regions. A thin layer of top soil loss over a hectare of cropland could be corresponding to tons of productive soil loss per hectare. The objectives of this study were to evaluate the influence of beef feedlot manure, tillage and legume grass mixtures on changes in soil quality and nutrient components. The study was initiated in 2006 on an eroded site near Akron, Colorado, on a Norka-Colby very-fine sandy loam (fine-silty, mixed, mesic, Aridic, Argiustolls). Tillage treatments were no-tillage, shallow tillage (sweeps operations with V-blade) and deep tillage (DT; moldboard plow operations). In one set of plots, DT was implemented biannually (DT-2); and in another set the DT was done once at the initiation of the experiment in 2006. Amendments consisted of beef manure and urea (46-0-0), N fertilizer. Both amendments were added at low and high rates. A control treatment, with no fertilizer or manure added, was included with no-tillage and shallow tillage only. Six years of manure addition and tillage significantly altered soil chemical properties compared with fertilizer and grass legume mixtures. Across all the tillage treatments, at the 0–30 cm depth, soil pH from 2006 to 2012, was reduced 1.8 fold with high-manure compared with high-fertilizer treatment. Soil EC, Na, and SAR increased by 2.7 fold while soil P increase by 3.5 fold with high-manure treatment compared with low-manure from 2006 to 2012 across all the tillage treatments at the surface 0–30 cm. Soil organic carbon associated with high-manure was 71% higher than low-manure and 230% higher than high-fertilizer treatments in the 0–60 cm depth. Similar patterns were observed with soil total N. Overall, manure amendments greatly improved the soil nutrient status on this eroded site. However, the legume grass mixtures showed little effect on improving soils chemical properties. The micronutrients supplied by manure improved the soil nutrient status compared with inorganic fertilizer, the grass, and the grass-legume treatments. We concluded that more than six years are needed to measure significant improvements in soil quality from specific treatments, specifically fertilizer, grasses, and grass-legume mixtures in such eroded crop land.

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“…Results from this study showed that the addition of mulch from T. diversifolia or C. cajan did not substantially affect soil chemistry, including soil pH. Similarly, Amusan et al [26] and Das et al [27] did not observe changes in soil pH when either manure or biomass or a combination of manure and biomass were added to an acidic soil in southwestern Nigeria and India. The lack of a significant increase in soil pH may also be due to the smaller amount of mulch biomass added from T. diversifolia or C. cajan compared to other studies [28].…”

Section: Discussionsupporting

confidence: 52%