Short-term effect of cultivation and crop rotation systems on soil quality indicators in a coastal newly reclaimed farming area

Quantification of soil organic carbon cycling as impacted by soil and crop man- agement practices is required for C storage and soil quality improvement investi- gations. This study assessed the short-term effect of conventional tillage (CT) and No-Tillage (NT) practices on SOC sequestration and yield of cocoyam (Colocasia esculenta). The experiment was conducted simultaneously at two lo- cations (06◦52' N, 07◦15' E and 06◦ 26' N; 07◦16' E) in southeast Nigeria. A Ran- domized Complete Block Design with five replications and four treatments com- prised of CT and NT, respectively, with 150 and 300 Kg ha-1 of NPK 15:15:15, was used. Soil quality attributes were measured at two soil depths (0-20 cm and 20-40 cm) in both locations and analyzed. The results indicated that the quantity of carbon sequestered in the soil at 0-20 cm soil depth for both sites was 46.7- 90.9 and 65.0-117.9 Mg ha-1, respectively, for the two planting seasons in NT plots treated with 300 Kg ha-1 of NPK. This was followed by NT plots treated with 150 Kg ha-1 of NPK, which sequestered 55.5-86.2 and 46.7-91.9 Mg ha-1 SOC. CT plots that received 300 Kg ha-1 NPK with 11.3-47.6 Mg/ha SOC had 44% and 28% lower stored SOC when compared to NT, NPK 150 Kg ha-1 plots for the two-planting season respectively. This indicates that CT practices signifi- cantly limit SOC sequestration. CT with 300 Kg of NPK 15:15:15 gave the high- est corm yield, followed by No-till with 300 Kg ha-1. A better edaphic condition provided by CT was compensated for by higher doses of N fertilizer in NT Plots.

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Labile soil carbon fractions as indicators of soil quality improvement under short-term grassland set-aside

Soil Research ◽

10.1071/sr19180 ◽

2020 ◽

Vol 58 (4) ◽

pp. 364

Author(s):

Jason M. Lussier ◽

Maja Krzic ◽

Sean M. Smukler ◽

Katarina R. Neufeld ◽

Chantel J. Chizen ◽

...

Keyword(s):

Soil Quality ◽

Quality Indicators ◽

Crop Production ◽

Low Cost ◽

Size Fraction ◽

Aggregate Stability ◽

Aggregate Size ◽

Soil Quality Indicators ◽

Short Term ◽

Soil C

Grassland set-asides (GLSA) are fields that are taken out of intensive annual crop production and seeded with a mixture of grasses and legumes for one to four years to improve soil quality. The objectives of this study were to evaluate (i) the relationships among soil organic carbon (SOC), permanganate oxidisable C (POXC), dilute-acid extractable polysaccharides (DAEP) and aggregate stability to determine if they may be used as proxies for one another, (ii) whether these indicators could be used to predict aggregate stability, (iii) if differences in soil quality after short-term GLSAs, detected with aggregate stability, could instead be detected with POXC or DAEP and (iv) potential use of diffuse Fourier transform spectroscopy (FT-MIR) to predict POXC, DAEP and aggregate stability in the Fraser River Delta region of British Columbia, Canada. There were strong relationships among SOC, POXC and DAEP, but the relationship between DAEP and SOC (R2 = 0.60, P < 0.0001) was less strong than that observed between POXC and SOC (R2 = 0.71, P < 0.0001). All three soil C fractions were significantly predicted with the 2–6 mm aggregate size fraction but the correlations for DAEP (R2 = 0.43) and POXC (R2 = 0.36) were stronger than that for SOC (R2 = 0.29). Predictions of soil quality indicators using FT-MIR produced R2 = 0.92 for POXC, R2 = 0.93 for DAEP and R2 = 0.62 for the 2–6 mm aggregate size fraction. These results suggest that FT-MIR holds promise as a low-cost method to determine labile soil C fractions that are better proxy soil quality indicators for aggregate stability than SOC.

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Organic amendments applied to a degraded soil: Short term effects on soil quality indicators

African Journal of Agricultural Research ◽

10.5897/ajar2018.13457 ◽

2019 ◽

Vol 14 (4) ◽

pp. 218-225 ◽

Cited By ~ 2

Author(s):

B. O. UNAGWU

Keyword(s):

Soil Quality ◽

Quality Indicators ◽

Organic Amendments ◽

Soil Quality Indicators ◽

Short Term ◽

Degraded Soil ◽

Short Term Effects

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Short-term effect of conservation agriculture practices on soil quality of a vertisol in central India

Applied Biological Research ◽

10.5958/0974-4517.2017.00004.0 ◽

2017 ◽

Vol 19 (1) ◽

pp. 26

Author(s):

Awanish Kumar ◽

J. Somasundaram ◽

A.K. Biswas ◽

Nishant K. Sinha ◽

V.N. Mishra ◽

...

Keyword(s):

Soil Quality ◽

Central India ◽

Conservation Agriculture ◽

Term Effect ◽

Short Term ◽

Short Term Effect

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Short-Term Effects of Changing Soil Management Practices on Soil Quality Indicators and Crop Yields in Greenhouses

Agronomy ◽

10.3390/agronomy10040582 ◽

2020 ◽

Vol 10 (4) ◽

pp. 582

Author(s):

Jerónimo Salinas ◽

David Meca ◽

Fernando del Moral

Keyword(s):

Organic Carbon ◽

Soil Quality ◽

Soil Solution ◽

Quality Indicators ◽

Management Practices ◽

Crop Yields ◽

Soil Quality Indicators ◽

Short Term ◽

The Mean ◽

Mean Concentration

The short-term responses of soil quality indicators are important for assessing the effects of new management practices and addressing threats to crop yields in greenhouses. The aim of this study was to assess, during three consecutive cropping seasons, the effect of a sustainable management package (CRTMP)—which includes the on-site reuse of greenhouse crop residues and tillage—in comparison with conventional management, based on fertigation only (CMP), on certain biochemical soil quality indicators and crop yields. CRTMP significantly increased (p < 0.05) the values of total organic carbon (TOC), particulate organic carbon (POC), light fraction (LF), water soluble organic carbon (WSOC), and dehydrogenase (DH) and β-glucosidase (GL) activities at a depth of 0–15 cm, as well as the mean concentration of nitrates in the soil solution. In addition, a significant Pearson’s correlation (p < 0.01) found between the indicators suggested a balanced improvement of soil biological activity and nutritional soil state. Nonetheless, the significant (p < 0.05) increases in the mean concentration of chlorides in the soil solution and electrical conductivity (p < 0.05) increased the risk of salinization, which may have affected the concentration of nitrates in the petiole sap and total production in CRTMP, which were significantly lower than in CMP. Nevertheless, the proportion of premium product was significantly higher in CRTMP, while the proportion of non-commercial production decreased.

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Multivariate assessment of soil quality indicators for crop rotation and tillage in Illinois

Soil and Tillage Research ◽

10.1016/j.still.2017.07.007 ◽

2017 ◽

Vol 174 ◽

pp. 147-155 ◽

Cited By ~ 37

Author(s):

Stacy M. Zuber ◽

Gevan D. Behnke ◽

Emerson D. Nafziger ◽

Maria B. Villamil

Keyword(s):

Soil Quality ◽

Quality Indicators ◽

Crop Rotation ◽

Soil Quality Indicators

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A Newspaper’s Effect on the Strength of Automatic Associations in Memory

Journal of Media Psychology Theories Methods and Applications ◽

10.1027/1864-1105/a000057 ◽

2012 ◽

Vol 24 (1) ◽

pp. 1-8 ◽

Cited By ~ 12

Author(s):

Florian Arendt

Keyword(s):

Treatment Group ◽

Term Effect ◽

Control Group ◽

Implicit Measure ◽

Short Term ◽

Short Term Treatment ◽

Short Term Effect ◽

Automatic Associations ◽

Foreign Nationality ◽

The Impact

A test was done to see if reading a newspaper which consistently overrepresents foreigners as criminals strengthens the automatic association between foreign country and criminal in memory (i.e., implicit cultivation). Further, an investigation was done to find out if reading articles from the same newspaper produces a short-term effect on the same measure and if (1) emotionalization of the newspaper texts, (2) emotional reactions of the reader (indicated by arousal), and (3) attributed text credibility moderate the short-term treatment effect. Eighty-five participants were assigned to one of three experimental conditions. Participants in the control group received short factual crime texts, where the nationality of the offender was not mentioned. Participants in the factual treatment group received the same texts, but the foreign nationality was mentioned. Participants in the emotionalized treatment group received emotionalized articles (i.e., texts which are high in vividness and frequency) covering the same crimes, with the foreign nationality mentioned. Supporting empirical evidence for implicit cultivation and a short-term effect was found. However, only emotionalized articles produced a short-term effect on the strength of the automatic association, indicating that newspaper texts must have a minimum of stimulus intensity to overcome an effect threshold. There were no moderating effects of arousal or credibility pertaining to the impact on the implicit measure. However, credibility moderated the short-term effect on a first-order judgment (i.e., estimated frequency of foreigners of all criminals). This indicates that a newspaper’s effect on the strength of automatic associations is relatively independent from processes of propositional reasoning.

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