Soil health indicators impacted by long-term cattle manure and inorganic fertilizer application in a corn-soybean rotation of South Dakota

Ozlu, Ekrem; Sandhu, Saroop S.; Kumar, Sandeep; Arriaga, Francisco J.

doi:10.1038/s41598-019-48207-z

Cited by 81 publications

(63 citation statements)

References 56 publications

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“…In terms of percentage, the nitrate concentrations above the control were 122.9 and 103.2% for 10% manure and the combination of 20% biochar and 10% manure, respectively. The high nitrates concentration in manure treatments can be as a result of N mineralization resulting from the narrow C/N ratio of the manure used for the experiment (Ezlu et al, 2019). Comparable results had been reported by Ewulo et al (2008) and Han et al (2016) who observed an increase in soil nitrogen with manure application.…”

Section: Effect Of Biochar and Manure On Selected Biochemical Soil Prsupporting

confidence: 59%

Effects of biochar and manure on soil properties and growth of Casuarina equisetifolia seedlings at the coastal region of Kenya

Mwadalu¹,

Mochoge²,

Danga³

2020

Sci. Res. Essays

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This study investigated the effects of biochar and manure applied singly or together on soil biochemical properties, Casuarina equisetifolia seedling growth and seedling quality. Therefore, a nursery experiment consisting of Prosopis juliflora biochar and cattle manure treatments at 0% (control), 10% biochar, 20% biochar, 10% manure, 10% biochar + 10% manure, and 20% biochar + 10% manure was conducted. Generally, biochar containing treatments recorded higher P concentrations; where the combination of 20% biochar and 10% manure gave the highest phosphorus concentration, which was 137.3% above the control. Nitrate concentrations were higher in manure treatments than the control by 122.9%. As a result of C. equisetifolia's ability to fix nitrogen, nitrates concentration in the control increased from 0.016 ppm at the onset of the experiment to 2.18 ppm at the end the experiment. There was also a general increase in pH with biochar and manure application. Seedlings treated with 10% manure recorded the highest collar diameter and height which was 36.4 and 27.4% above the control respectively while treatments with biochar alone recorded the lowest seedling collar diameters. Seedling quality as observed using the shoot/root ratio showed that sole biochar treatments had the recommended range of <3:1. These results suggest that the use of biochar and manure enhances nitrogen and phosphorus availability which are crucial for production of seedlings that grow significantly faster than seedlings raised from forest soil only.

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Section: Effect Of Biochar and Manure On Selected Biochemical Soil Prsupporting

confidence: 59%

Effects of biochar and manure on soil properties and growth of Casuarina equisetifolia seedlings at the coastal region of Kenya

Mwadalu¹,

Mochoge²,

Danga³

2020

Sci. Res. Essays

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“…These results may seem contradictory, since irrigation improved SOC concentrations in low residue systems, and improved N concentrations, regardless of the residue level, compared with nonirrigated systems (Figure 2). Although improved SOC and N levels are usually considered indicators of soil health (Lal, 2016; Ozlu, Sandhu, Kumar, & Arriaga, 2019), it should be noted that irrigation did not affect SOC scores (Table 5), and N is not included in the current version of SMAF. The lower EC and K scores suggest increased crop nutrient uptake as result of greater productivity, which reduced soil EC and K concentrations.…”

Section: Resultsmentioning

confidence: 99%

Soil quality indices as affected by long‐term burning, irrigation, tillage, and fertility management

Amorim

Ashworth

Brye

et al. 2021

Soil Science Soc of Amer J

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Understanding the impacts of long‐term agricultural practices on soil quality (SQ) is key for sustaining agroecosystem productivity. This study investigated conventional and no‐tillage (NT), residue burning and no burning, residue level (high and low), and irrigation (irrigated and dryland) effects on soil properties, SQ, and crop yields following 16 yr of a wheat (Triticum aestivum L.)–soybean [Glycine max (L.) Merr.] double‐crop system via the Soil Management Assessment Framework (SMAF). A field experiment was conducted in the Lower Mississippi River Delta region on a silt‐loam soil. Bulk density, soil organic C (SOC), total N (TN), pH, electrical conductivity (EC), and soil P and K from the 0‐ to 10‐cm soil depth were used as SQ indicators investigated individually and as an overall soil quality index (SQI). Following 16 yr, residue burning reduced SOC (1.1%) compared with no burning (1.24%). Irrigation resulted in greater soil TN than dryland management systems (p < 0.05). Reduced soil pH and extractable soil P and K occurred under NT, high residue, and irrigated treatments. Irrigation increased soybean yields, regardless of the tillage system. Burned, NT–high residue management increased wheat yields (3.45 Mg ha−1). Irrigation reduced SQ because of low EC and K scores. High residue reduced SQ compared with the low residue treatment within NT systems, owing to low pH scores. The SMAF indices identified the impacts of irrigation, NT, and optimal N fertilization on SQ. Monitoring of soil pH, P, and K may be needed to maintain SQ in long‐term wheat–soybean systems.

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“…This could explain why reported responses in terms of microbial abundances and biomass to increasing soil C after addition of organic matter have been inconsistent (i.e., Witter, Mårtensson & Garcia, 1993 ; Houot & Chaussod, 1995 ; Leita et al, 1999 ; Enwall et al, 2007 ; Hallin et al, 2009 ; Cederlund et al, 2014 ; Kätterer, Börjesson & Kirchmann, 2014 ). For example, arbuscular mycorrhizal fungal abundance has been shown to be promoted by manure addition ( Liu et al, 2020 ; Ozlu et al, 2019 ). In addition, microbial performance depends on multiple soil properties, e.g., pH and bulk density, that are also affected by organic amendments ( Bünemann, Schwenke & Van Zwieten, 2006 ).…”

Section: Discussionmentioning

confidence: 99%

Type of organic fertilizer rather than organic amendment per se increases abundance of soil biota

Viketoft

Riggi

Bommarco

et al. 2021

PeerJ

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Addition of organic amendments is a commonly used practice to offset potential loss of soil organic matter from agricultural soils. The aim of the present study was to examine how long-term addition of organic matter affects the abundance of different soil biota across trophic levels and the role that the quality of the organic amendments plays. Here we used a 17-year-old fertilization experiment to investigate soil biota responses to four different organic fertilizers, compared with two mineral nitrogen fertilizers and no fertilization, where the organic fertilizers had similar carbon content but varied in their carbon to nitrogen ratios. We collected soil samples and measured a wide range of organisms belonging to different functional groups and trophic levels of the soil food web. Long-term addition of organic and mineral fertilizers had beneficial effects on the abundances of most soil organisms compared with unfertilized soil, but the responses differed between soil biota. The organic fertilizers generally enhanced bacteria and earthworms. Fungi and nematodes responded positively to certain mineral and organic fertilizers, indicating that multiple factors influenced by the fertilization may affect these heterogeneous groups. Springtails and mites were less affected by fertilization than the other groups, as they were present at relatively high abundances even in the unfertilized treatment. However, soil pH had a great influence on springtail abundance. In summary, the specific fertilizer was more important in determining the numerical and compositional responses of soil biota than whether it was mineral or organic. Overall, biennial organic amendments emerge as insufficient, by themselves, to promote soil organisms in the long run, and would need to be added annually or combined with other practices affecting soil quality, such as no or reduced tillage and other crop rotations, to have a beneficial effect.

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Soil health indicators impacted by long-term cattle manure and inorganic fertilizer application in a corn-soybean rotation of South Dakota

Cited by 81 publications

References 56 publications

Effects of biochar and manure on soil properties and growth of Casuarina equisetifolia seedlings at the coastal region of Kenya

Effects of biochar and manure on soil properties and growth of Casuarina equisetifolia seedlings at the coastal region of Kenya

Soil quality indices as affected by long‐term burning, irrigation, tillage, and fertility management

Type of organic fertilizer rather than organic amendment per se increases abundance of soil biota

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