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1. Soil Nutrients Status after Fifty Years of Tillage and Nitrogen Fertilization

Author:
Mikha, Maysoon M.,   et al.   ; Obour, Augustine K.; Holman, Johnathon D.;     Show all 3 Authors
Source:
Communications in soil science and plant analysis 2018 v.49 no.16 pp. 1953-1975
ISSN:
1532-2416
Subject:
Sorghum bicolor; Triticum aestivum; calcium; conventional tillage; dryland farming; fallow; fertilizer rates; magnesium; nitrogen; nitrogen fertilizers; no-tillage; phosphorus; soil; soil nutrients; soil organic carbon; winter wheat
Abstract:
... Long-term studies are valuable in assessing the impact of crop management practices on soil sustainability and function. This study used two calculation scenarios, fixed depth and Equivalent Soil Mass (ESM) to assess (i) soil nutrient status and (ii) soil organic carbon (SOC) after 50 years of nitrogen (N) fertilizer application rates (0, 22, 45, and 67 kg N ha⁻¹) and tillage [clean tillage (CT), ...
DOI:
10.1080/00103624.2018.1492599

2. Changes in soil surface chemistry after fifty years of tillage and nitrogen fertilization

Author:
Mikha, Maysoon M.,   et al.   ; Obour, Augustine K.; Holman, Johnathan D.; Stahlman, Phillip W.;     Show all 4 Authors
Source:
Geoderma 2017 v.308 pp. 46-53
ISSN:
0016-7061
Subject:
Sorghum bicolor; Triticum aestivum; arid lands; conventional tillage; crop yield; fallow; fertilizer rates; growers; iron; liming; long term effects; manganese; nitrogen; nitrogen fertilizers; no-tillage; nutrient management; phosphorus; reduced tillage; soil depth; soil fertility; soil organic matter; soil pH; winter wheat
Abstract:
... Knowledge gained on the long-term effects of crop management practices on soil fertility is critical in developing nutrient management strategies to optimize crop yields. This study examined the long-term effects of nitrogen (N) fertilizer application rates (0, 22, 45 and 67 kg N ha−1) and tillage intensity [conventional tillage (CT), reduced tillage (RT) and no-tillage (NT)] on soil phosphorus (P ...
Handle:
10113/5801878
DOI:
10.1016/j.geoderma.2017.08.020
CHORUS:
10.1016/j.geoderma.2017.08.020

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

Author:
Mikha, Maysoon M.,   et al.   ; Benjamin, Joseph G.; Vigil, Merle F.; Poss, David J.;     Show all 4 Authors
Source:
Plos One 2017 v.12 no.4 pp. 1-25
ISSN:
1932-6203
Subject:
Argiustolls; cattle manure; cropland; deep tillage; eroded soils; grasses; legumes; moldboard plows; nitrogen content; nitrogen fertilizers; no-tillage; phosphorus; remediation; sandy loam soils; semiarid zones; sodium; soil nutrients; soil organic carbon; soil pH; soil quality; topsoil; urea; water erosion; wind; wind erosion; Colorado
Abstract:
... 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 initiat ...
Handle:
10113/5695439
DOI:
10.1371/journal.pone.0175533
PubMed:
28448510
PubMed Central:
PMC5407623

4. Influence of Composted Dairy Manure and Perennial Forage on Soil Carbon and Nitrogen Fractions during Transition into Organic Management

Author:
Mikha, Maysoon M.,   et al.   ; Widiastuti, Dwi P.; Hurisso, Tunsisa T.; Brummer, Joe E.; Davis, Jessica G.;     Show all 5 Authors
Source:
Agriculture 2017 v.7 no.5
ISSN:
2077-0472
Subject:
Haplustalfs; Medicago sativa; Onobrychis viciifolia; agricultural research; alfalfa; autumn; dairy manure; education; forage; grasses; mineralization; nitrogen content; organic nitrogen; soil organic carbon; soil sampling; soil separates; Colorado
Abstract:
... Composted dairy manure (CDM) is among the management practices used in transitioning from a conventional to an organic agricultural system. The objectives of this study are to evaluate the impact of several organic nitrogen (N) sources on: (i) soil organic C (SOC) and soil total N (STN) content; (ii) soil C and N distribution among soil fractions; and (iii) N mineralization. This study was initiat ...
Handle:
10113/6468463
DOI:
10.3390/agriculture7050037

5. Soil Organic Carbon and Nitrogen in Long-Term Manure Management System

Author:
Mikha, Maysoon M.,   et al.   ; Hergert, Gary W.; Benjamin, Joseph G.; Jabro, Jalal D.; Nielsen, Rex A.;     Show all 5 Authors
Source:
Soil Science Society of America journal 2017 v.81 no.1 pp. 153-165
ISSN:
0361-5995
Subject:
Haplustolls; Zea mays; conventional tillage; corn; furrow irrigation; management systems; manure amendments; mineral fertilizers; nitrogen; particulate organic matter; plowing; sandy loam soils; soil depth; soil organic carbon; soil quality; soil sampling; total nitrogen
Abstract:
... Long-term studies are extremely beneficial to our understanding and evaluation of changes in soil quality and sustainability of specific management practices. The objectives of this study were to evaluate the effects of 70 yr of intensive traditional tillage. Effect of moldboard plowing with manure (M) and inorganic fertilizer (F) additions on soil organic carbon (SOC), soil total nitrogen (STN), ...
Handle:
10113/6472162
DOI:
10.2136/sssaj2016.04.0107

6. Incorporation of Biochar Carbon into Stable Soil Aggregates: The Role of Clay Mineralogy and Other Soil Characteristics

Author:
MIKHA, Maysoon M.,   et al.   ; KELLY, Charlene N.; BENJAMIN, Joseph; CALDERÓN, Francisco C.; RUTHERFORD, David W.; ROSTAD, Colleen E.;     Show all 6 Authors
Source:
Pedosphere 2017 v.27 no.4 pp. 694-704
ISSN:
1002-0160
Subject:
Alfisols; Aridisols; Panicum virgatum; biochar; carbon; growth chambers; mineralogy; soil aggregates; soil strength; water holding capacity; wheat; Colorado; Virginia
Abstract:
... Aggregation and structure play key roles in water-holding capacity and stability of soils. In this study, the incorporation of carbon (C) from switchgrass biochar into stable aggregate size fractions was assessed in an Aridisol (from Colorado, USA) dominated by 2:1 clays and an Alfisol (from Virginia, USA) containing weathered mixed 1:1 and 2:1 mineralogy, to evaluate the effect of biochar additio ...
DOI:
10.1016/S1002-0160(17)60399-0

7. Physical and hydraulic properties of a sandy loam soil under zero, shallow and deep tillage practices

Author:
Mikha, Maysoon M.,   et al.   ; Jabro, Jay D.; Iversen, William M.; Stevens, William B.; Evans, Robert G.; Allen, Brett L.;     Show all 6 Authors
Source:
Soil & tillage research 2016 v.159 pp. 67-72
ISSN:
0167-1987
Subject:
crops; deep tillage; no-tillage; porosity; sandy loam soils; saturated hydraulic conductivity; soil density; soil ecology; soil water content; water content
Abstract:
... The effect of tillage depth on physical properties in sandy soils under sugarbeet (Beta vulgaris L.) is not well understood and documented. A 4-yr study was conducted to investigate the effect of zero tillage (ZT), shallow tillage (ST), and deep tillage (DT) practices on soil bulk density (BD), saturated hydraulic conductivity (Ks), and moisture content (MC) in a sandy loam. Undisturbed soil cores ...
Handle:
10113/61898
DOI:
10.1016/j.still.2016.02.002

8. Long-Term Manure Impacts on Soil Aggregates and Aggregate-Associated Carbon and Nitrogen

Author:
Mikha, Maysoon M.,   et al.   ; Hergert, Gary W.; Benjamin, Joseph G.; Jabro, Jalal D.; Nielsen, Rex A.;     Show all 5 Authors
Source:
Soil Science Society of America journal 2015 v.79 no.2 pp. 626-636
ISSN:
0361-5995
Subject:
Zea mays; discing; sandy soils; soil organic carbon; irrigation scheduling; nitrogen; microaggregates; fertilizers; plowing; corn; furrow irrigation; sieving; soil sampling; aggregate stability
Abstract:
... Long-term studies document that soil properties influenced by management practices occur slowly. The objectives of this study were to evaluate 70 yr of manure (M) and commercial fertilizer (F) additions and moldboard plowing on soil organic C (SOC), soil total N (STN), water-stable aggregates (WSA), and aggregate-associated C and N. The Knorr–Holden plots have been in furrow irrigated continuous c ...
Handle:
10113/60527
DOI:
10.2136/sssaj2014.09.0348

9. Long-Term Tillage Impacts on Soil Aggregation and Carbon Dynamics under Wheat-Fallow in the Central Great Plains

Author:
Mikha, Maysoon M.,   et al.   ; Vigil, Merle F.; Benjamin, Joseph G.;     Show all 3 Authors
Source:
Soil Science Society of America journal 2013 v.77 no.2 pp. 594
ISSN:
0361-5995
Subject:
Triticum aestivum; carbon; conservation tillage; conventional tillage; fallow; long term effects; moldboard plows; organic matter; particulates; reduced tillage; soil aggregates; soil aggregation; soil depth; soil erosion; soil nutrient dynamics; soil organic carbon; soil quality; soil sampling; soil structure; soil transport processes; winter wheat; Colorado; Great Plains region
Abstract:
... Long-term conservation tillage improves soil quality by enhancing soil structure, improving water availability, and reducing soil erosion. We investigated the effect of tillage intensity on soil organic carbon (SOC), organic carbon fractions, particulate organic matter (POM), and wet aggregate-size distribution after 39 yr of management. The data reported here were taken from a long-term tillage s ...
Handle:
10113/55997
DOI:
10.2136/sssaj2012.0125

10. Effect of Three Tillage Depths on Sugarbeet Response and Soil Penetrability Resistance

Author:
Mikha, Maysoon M.,   et al.   ; Jabro, Jalal D.; Iversen, William M.; Stevens, William Bart; Evans, Robert G.; Allen, Brett L.;     Show all 6 Authors
Source:
Agronomy journal 2015 v.107 no.4 pp. 1481-1488
ISSN:
0002-1962
Subject:
Beta vulgaris; cold; crop yield; deep tillage; manual harvesting; no-tillage; roots; sandy loam soils; soil penetration resistance; soil water; spring; sucrose; sugar beet; weather
Abstract:
... Tillage can alter soil properties and affect crop yield and quality. A 4-yr study was conducted on a Lihen sandy loam soil loam (sandy, mixed, frigid Entic Haplustoll) to evaluate the effect of tillage depth on sugarbeet (Beta vulgaris L.) root yield, root quality, and soil penetration resistance (PR). Tillage treatments consisted of no-tillage (NT), shallow tillage (ST), and deep tillage (DT). So ...
Handle:
10113/61038
DOI:
10.2134/agronj14.0561

11. Switchgrass Biochar Effects on Plant Biomass and Microbial Dynamics in Two Soils from Different Regions

Author:
MIKHA, Maysoon M.,   et al.   ; KELLY, Charlene N.; CALDERÓN, Francisco C.; ACOSTA-MARTÍNEZ, Verónica; BENJAMIN, Joseph; RUTHERFORD, David W.; ROSTAD, Colleen E.;     Show all 7 Authors
Source:
Pedosphere 2015 v.25 no.3 pp. 329-342
ISSN:
1002-0160
Subject:
Alfisols; Aridisols; Panicum virgatum; Triticum aestivum; application rate; biochar; carbon; clay soils; community structure; dry matter accumulation; electrical conductivity; fatty acid methyl esters; growth chambers; microbial activity; microbial biomass; microbial communities; mineralization; nitrogen; nitrogen content; nutrient availability; phosphorus; potassium; shoots; soil amendments; soil microorganisms; soil nutrients; soil pH; wheat; Colorado; Great Plains region; Midwestern United States; Virginia
Abstract:
... Biochar amendments to soils may alter soil function and fertility in various ways, including through induced changes in the microbial community. We assessed microbial activity and community composition of two distinct clayey soil types, an Aridisol from Colorado (CO) in the U.S. Central Great Plains, and an Alfisol from Virginia (VA) in the southeastern USA following the application of switchgrass ...
Handle:
10113/62016
DOI:
10.1016/S1002-0160(15)30001-1

12. Remediation/Restoration of Degraded Soil: II. Impact on Crop Production and Nitrogen Dynamics

Author:
Mikha, Maysoon M.,   et al.   ; Stahlman, Phillip W.; Benjamin, Joseph G.; Geier, Patrick W.;     Show all 4 Authors
Source:
Agronomy journal 2014 v.106 no.1 pp. 261
ISSN:
0002-1962
Subject:
Avena sativa; Haplustolls; Panicum miliaceum subsp. miliaceum; Sorghum bicolor; Triticum aestivum; acid soils; application rate; cattle manure; conventional tillage; crop rotation; eroded soils; fertilizers; grain sorghum; grain yield; leaching; manure spreading; nitrogen; no-tillage; oats; remediation; risk; silt loam soils; soil profiles; urea; winter wheat; Kansas
Abstract:
... The response of manure applications on calcareous eroded soils in the western United States is unlike the responses observed on acid soils in the eastern United States. The objectives of this study were to restore the productivity and evaluate N loss of eroded land influenced by tillage practices, N sources, and N rates. The study was initiated in 2006 on an Armo silt loam (fine-loamy, mixed, mesi ...
Handle:
10113/59373
DOI:
10.2134/agronj2013.0279

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

Author:
Mikha, Maysoon M.,   et al.   ; Benjamin, Joseph G.; Stahlman, Phillip W.; Geier, Patrick W.;     Show all 4 Authors
Source:
Agronomy journal 2014 v.106 no.1 pp. 252
ISSN:
0002-1962
Subject:
Haplustolls; acid soils; cattle manure; conventional tillage; eroded soils; fertilizer rates; nitrogen fertilizers; no-tillage; phosphorus; remediation; silt; silt loam soils; soil nutrient dynamics; soil organic carbon; soil pH; soil sampling; spring; urea; Kansas
Abstract:
... Nutrient dynamics in the calcareous eroded soils of the western United States may react differently than the acid soils in the eastern United States. The objectives of this study were to evaluate the impact of tillage practices and N treatments on changes in soil nutrient constituents. The eroded study was initiated in 2006 at the Agriculture Research Center, Hays, KS, on an Armo silt loam (fine-l ...
Handle:
10113/59381
DOI:
10.2134/agronj2013.0278

14. A Comparison of Two Models to Evaluate Soil Physical Property Effects on Corn Root Growth

Author:
Mikha, Maysoon M.,   et al.   ; Benjamin, Joseph G.; Nielsen, David C.; Vigil, Merle F.; Calderon, Francisco J.;     Show all 5 Authors
Source:
Agronomy journal 2013 v.105 no.3 pp. 713
ISSN:
0002-1962
Subject:
Zea mays; atmosphere; bulk density; corn; developmental stages; growing season; growth models; neutron probes; root growth; roots; soil depth; soil quality; soil sampling; soil water content; surface area; water content
Abstract:
... Two models for evaluating soil physical condition effects on root growth were compared. The first model, called the Jones model, is a submodel for root growth limitations used by several complex soil–plant–atmosphere models. The second model uses soil physical limitations as identified by the least limiting water range (LLWR). Root surface area density () and bulk density () were determined at the ...
Handle:
10113/56975
DOI:
10.2134/agronj2012.0104

15. Soil Carbon Changes Influenced by Soil Management and Calculation Method

Author:
Mikha, Maysoon M.,   et al.   ; Benjamin, Joseph G.; Halvorson, Ardell D.; Nielsen, David C.;     Show all 4 Authors
Source:
ARS USDA Submissions 2013 v.3 no.2 pp. 123
ISSN:
2162-5379
Subject:
Zea mays; bulk density; carbon; chiseling; continuous cropping; corn; crop rotation; crops; irrigation scheduling; multiple cropping; no-tillage; silt loam soils; soil organic carbon; temporal variation
Abstract:
... Throughout the years, many studies have evaluated changes in soil organic carbon (SOC) mass on a fixed-depth (FD) basis without considering changes in soil mass caused by changing bulk density (?b). This study evaluates the temporal changes in SOC caused by two factors: 1) changing SOC concentration; and 2) changing equivalent soil mass (ESM) in comparison with FD. In addition, this study evaluate ...
Handle:
10113/56974
DOI:
10.4236/ojss.2013.32014

16. Addition of Cover Crops Enhances No-Till Potential for Improving Soil Physical Properties

Author:
Mikha, Maysoon M.,   et al.   ; Blanco-Canqui, Humberto; Presley, DeAnn R.; Claassen, Mark M.;     Show all 4 Authors
Source:
Soil Science Society of America journal 2011 v.75 no.4 pp. 1471
ISSN:
0361-5995
Subject:
cover crops; no-tillage; soil physical properties; winter wheat; Triticum aestivum; Sorghum bicolor; grain crops; crop rotation; nitrogen fertilizers; fertilizer rates; Vicia villosa; Crotalaria juncea; Glycine max; maturity groups; soil organic carbon; bulk density; infiltration (hydrology); soil compaction; soil aggregates
Abstract:
... Inclusion of cover crops (CCs) may be a potential strategy to boost no-till performance by improving soil physical properties. To assess this potential, we utilized a winter wheat (L.)–grain sorghum [ (L.) Moench] rotation, four N rates, and a hairy vetch (HV; Roth) CC after wheat during the first rotation cycles, which was replaced in subsequent cycles with sunn hemp (SH; L.) and late-maturing so ...
Handle:
10113/50018
DOI:
10.2136/sssaj2010.0430

17. Organic Carbon Effects on Soil Physical and Hydraulic Properties in a Semiarid Climate

Author:
Mikha, Maysoon M.,   et al.   ; Benjamin, Joseph G.; Vigil, Merle F.;     Show all 3 Authors
Source:
Soil Science Society of America journal 2008 v.72 no.5 pp. 1357
ISSN:
1435-0661
Subject:
soil organic carbon; soil aggregates; aggregate stability; agricultural soils; cropping systems; bulk density; porosity; saturated hydraulic conductivity; soil water retention; crop rotation; cropping sequence; semiarid soils; semiarid zones; grasses; Great Plains region
Abstract:
... Increasing cropping intensity in the central Great Plains of the United States has the potential to increase organic carbon (OC) stored in the soil and lead to improved soil physical properties. A cropping systems study was started in 1990 at the Central Great Plains Research Station near Akron, CO. In 2005 soil samples were taken in six 95-mm increments to a depth of 370 mm to measure OC, water s ...
Handle:
10113/19287
DOI:
10.2136/sssaj2007.0389

18. Short-term nitrogen mineralization during transition from conventional to organic management is unchanged by composted dairy manure addition in perennial forage systems

Author:
Mikha, Maysoon M.,   et al.   ; Hurisso, Tunsisa T.; Davis, Jessica G.; Brummer, Joe E.; Stromberger, Mary E.; Booher, Matthew R.;     Show all 6 Authors
Source:
Organic agriculture 2012 v.2 no.3-4 pp. 219-232
ISSN:
1879-4238
Subject:
application rate; composted manure; field experimentation; forage grasses; forage production; mineralization; nitrogen; production technology; resins; Colorado
Abstract:
... This study was conducted to determine the effect of composted dairy manure (CDM) addition on nitrogen (N) mineralization in perennial forage production system undergoing transition to organic management. A field experiment was carried out on a Gray Luvisol of northeastern Colorado (40°39′N, 104°59′W) in 2008 and 2009, using the in situ resin core method. CDM was top-dressed onto two mixtures of pe ...
DOI:
10.1007/s13165-013-0037-z

19. Rapid changes in microbial biomass and aggregate size distribution in response to changes in organic matter management in grass pasture

Author:
Mikha, Maysoon M.,   et al.   ; Hurisso, Tunsisa T.; Davis, Jessica G.; Brummer, Joe E.; Stromberger, Mary E.; Haddix, Michelle L.; Booher, Matthew R.; Paul, Eldor A.;     Show all 8 Authors
Source:
Geoderma 2013 v.193-194 pp. 68
ISSN:
0016-7061
Subject:
Medicago sativa; aggregate stability; alfalfa; application rate; carbon; clay fraction; composted manure; correlation; dairy manure; forage legumes; grasses; microaggregates; microbial biomass; nitrogen; nitrogen content; organic matter; pasture management; silt fraction; soil microorganisms; soil organic carbon; soil structure
Abstract:
... Adding high quantities of organic matter can increase carbon (C) inputs to soil and help maintain soil structure. This study investigated short-term effects of application of different levels of composted dairy manure (CDM) versus interseeding a legume into grass pasture on aggregate stability and soil C and nitrogen (N) contents. CDM was added to a mixture of perennial grasses at 22.4, 33.6 or 44 ...
Handle:
10113/56272
DOI:
10.1016/j.geoderma.2012.10.016

20. Nutrient Source and Tillage Impact on Corn Grain Yield and Soil Properties

Author:
Mikha, Maysoon M.,   et al.   ; Sistani, Karamat R.; Warren, Jason G.; Gilfillen, Becky; Acosta-Martinez, Veronica; Willian, Todd;     Show all 6 Authors
Source:
Soil science 2010 v.175 no.12 pp. 593-600
ISSN:
0038-075X
Subject:
Zea mays; copper; corn; cropping systems; dairy manure; experimental design; grain yield; mineral fertilizers; no-tillage; nutrients; phosphorus; poultry manure; silt loam soils; soil nutrient dynamics; soil nutrients; soil properties; soil sampling; spring; surface water; zinc; Southeastern United States
Abstract:
... Large amounts of animal manure, particularly poultry litter and dairy manure, are generated in southeastern United States, where corn (Zea mays L.) is also extensively grown. Characterizations of management practices and long-term manure and soil nutrient dynamics are critical. This study examined corn grain yield and soil nutrient status under three nutrient sources (two rates of each) as follows ...
DOI:
10.1097/SS.0b013e3181fbdfee