Long-term fertilization impacts on corn yields and soil organic matter on a clay-loam soil in Northeast China

The objective was to quantify the effect of crop rotations, crop type, life cycle, nitrogen fertilizer, manure application, and fallow on soil hydrophobicity (SH). The SH was measured for a long-term (16 yr) dryland field experiment on a Dark Brown clay loam soil in southern Alberta, Canada. Mean SH was significantly (P ≤ 0.05) greater in rotations with grass, perennial crops, manure application, and continuous cropping; whereas cereal-legume rotations and N fertilizer effects were undetectable. A strong, positive correlation occurred between SH and soil organic carbon concentration (r=0.73). Soil water repellency should be measured on these plots using water-based methods.

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Aggregate slaking during rapid wetting: Hydrophobicity and pore occlusion

Canadian Journal of Soil Science ◽

10.4141/cjss07021 ◽

2008 ◽

Vol 88 (1) ◽

pp. 85-97 ◽

Cited By ~ 24

Author(s):

Hafida Zaher ◽

Jean Caron

Keyword(s):

Organic Matter ◽

Management Strategies ◽

Water Entry ◽

Paper Sludge ◽

Silty Clay ◽

Clay Loam ◽

Wetting Front ◽

Clay Loam Soil ◽

Silty Clay Loam ◽

Loam Soil

The slaking process after rapid wetting is a key factor controlling soil structural stability in dry soil, and an understanding of the relative importance of the different mechanisms involved in slaking may help in the design of management strategies aimed at maintaining a stable surface soil structure. Slaking has been linked to, among other factors, rapid pressure build-up in aggregate, and previous work has emphasized the role of organic matter to hamper that pressure build-up, possibly due to hydrophobicity, reducing rapid water entry within aggregates and hence the build-up. This study emphasizes this latter aspect linked to slaking. The evolution of the intra-aggregate pressure, the matter lost by slaking and the expelled air after rapid wetting of two soils of different textures (clay loam soil and silty-clay loam soil) amended with different types of paper sludge were studied. Hydrophobicity effects were also studied using a tensio-active solution. The results of these experiments showed that when aggregates were submitted to sudden wetting, those treated with paper sludge had an improved resistance to the destructive action of rapid wetting. The lower pressures measured in the aggregates from the amended soils and having less slaking resulted most likely from slow water entry and reduced swelling. Detailed investigation on the link between hydrophobicity and water entry revealed that the true hydrophobic effect (modification of contact angle) was non-existent for the silty-clay loam and minor for the clay loam. This study, rather, suggests that changes in the water potential at the wetting front following organic matter addition and aggregate immersion most likely depend on pore occlusion and on changes in pore surface roughness. Key words: Aggregate stability, organic matter, slaking, pressure, swelling, wettability

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Does long-term heavy cattle manure application increase salinity of a clay loam soil in semi-arid southern Alberta?

Agriculture Ecosystems & Environment ◽

10.1016/s0167-8809(02)00008-7 ◽

2003 ◽

Vol 94 (1) ◽

pp. 89-103 ◽

Cited By ~ 107

Author(s):

Xiying Hao ◽

Chi Chang

Keyword(s):

Cattle Manure ◽

Clay Loam ◽

Clay Loam Soil ◽

Manure Application ◽

Southern Alberta ◽

Loam Soil ◽

Semi Arid

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Hydrological Properties of a Clay Loam Soil after Long-Term Cattle Manure Application

Journal of Environmental Quality ◽

10.2134/jeq2002.0989 ◽

2002 ◽

Vol 31 (3) ◽

pp. 989 ◽

Cited By ~ 23

Author(s):

J. J. Miller ◽

N. J. Sweetland ◽

C. Chang

Keyword(s):

Cattle Manure ◽

Clay Loam ◽

Clay Loam Soil ◽

Manure Application ◽

Loam Soil

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CO2 Emissions and Maize Biomass Production Using Digestate Liquid Fraction in Two Soil Texture Types

Transactions of the ASABE ◽

10.13031/trans.12159 ◽

2017 ◽

Vol 60 (4) ◽

pp. 1325-1336 ◽

Cited By ~ 2

Author(s):

Carmelo Maucieri ◽

Maurizio Borin

Keyword(s):

Biomass Production ◽

Soil Texture ◽

Sandy Loam ◽

Liquid Fraction ◽

Emission Peak ◽

Clay Loam ◽

Clay Loam Soil ◽

Primary Tillage ◽

Loam Soil

Abstract. The aim of this work was to evaluate the effects of soil texture and primary tillage type on soil CO2 emission and maize biomass production after digestate liquid fraction (DLF) spreading. The study was conducted in 2014 in two open fields at Terrasa Padovana (farm 1) and Bovolenta (farm 2) in the Veneto Region of Italy. Soil CO2 emission after digestate spreading was evaluated by comparing the effect of soil texture (sandy loam vs. clay loam) at farm 1 and the effect of long-term primary tillage management (>10 years) (ripping vs. plowing) in clay loam soil at farm 2. Unamended soil was considered the control at both farms. DLF was supplied before maize ( L.) sowing at a dose equal to 170 kg total nitrogen ha-1 using a splash-plate technique. DLF spreading determined a CO2 emission peak 1 h after spreading at both farms, with median emission values of 8.93 and 4.35 g m-2 h-1, respectively, from the sandy loam and clay loam soils at farm 1. At farm 2, primary tillage type did not exert a significant effect on CO2 emission peak, with a median value of 5.85 g m-2 h-1. About three days after DLF distribution, soil CO2 fluxes were less than 1 g m-2 h-1. The first soil harrowing and the first rainfall event after spreading determined significantly higher CO2 emissions from amended plots than from unamended plots for a few hours. At farm 1, soil CO2 emission during the maize growing season was significantly higher in the amended plots (+1.7 times) than in the unamended plots, which showed a median emission value of 0.29 g m-2 h-1; soil texture and tillage exerted no significant influence. Maize yield at dough stage was not significantly influenced by DLF at farm 1, with 22.7 ±1.6 Mg ha-1 and 18.7 ±2.8 Mg ha-1 in the clay loam and sandy loam soils, respectively. At farm 2, the distribution of DLF increased maize biomass production by +17% with respect to the unamended treatment that produced 18.0 ±2.4 Mg ha-1. Although the results reported in this article concern data from only one year, and further long-term experiments are needed to confirm our findings, they indicate that CO2 emissions after digestate distribution are lower in a clay loam soil than in a sandy loam soil and are not affected by primary tillage type. Keywords: Clay loam soil, Digestate splash-plate spreading, Plowing, Ripping, Sandy loam soil.

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Effects of long-term and recently imposed tillage on the concentration and composition of amino sugars in a clay loam soil in Ontario, Canada

Soil and Tillage Research ◽

10.1016/j.still.2013.08.011 ◽

2014 ◽

Vol 135 ◽

pp. 9-17 ◽

Cited By ~ 5

Author(s):

Bin Zhang ◽

Craig F. Drury ◽

Xueming Yang ◽

W. Daniel Reynolds ◽

Xudong Zhang

Keyword(s):

Amino Sugars ◽

Clay Loam ◽

Clay Loam Soil ◽

Loam Soil

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Earthworm population dynamics as a consequence of long-term and recently imposed tillage in a clay loam soil

Canadian Journal of Soil Science ◽

10.1139/cjss-2016-0092 ◽

2017 ◽

Author(s):

Catherine Anne Fox ◽

Joseph J. Miller ◽

Monika Joschko ◽

Craig F. Drury ◽

W. Reynolds

Keyword(s):

Population Dynamics ◽

Clay Loam ◽

Clay Loam Soil ◽

Earthworm Population ◽

Loam Soil

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Effect of Tillage Systems on Physical Properties of a Clay Loam Soil under Oats

Agriculture ◽

10.3390/agriculture9030062 ◽

2019 ◽

Vol 9 (3) ◽

pp. 62 ◽

Cited By ~ 5

Author(s):

Karen Ordoñez-Morales ◽

Martin Cadena-Zapata ◽

Alejandro Zermeño-González ◽

Santos Campos-Magaña

Keyword(s):

Soil Properties ◽

Environmental Conditions ◽

Conservation Tillage ◽

Pore Space ◽

Conventional Tillage ◽

Clay Loam ◽

Clay Loam Soil ◽

Tillage Systems ◽

Loam Soil

In many regions, conservation tillage has been shown to contribute to preserving soil properties. However, in order to promote this practice in new areas, it is necessary to generate information about its results in local environmental conditions. Our objective was to study the effect of No Tillage (NT), Vertical Tillage (VT) and Conventional Tillage (CT) on physical soil properties of a clay loam soil and on yields (Avena sativa L.), in a semiarid area of Mexico. From 2013 to 2016 an experiment was conducted in random blocks, with the three tillage systems as treatments. Four variables were measured; bulk density (Bd), pore space (P), hydraulic conductivity (Ks) and crop yield. Our results did show scarce differences between the tillage systems. Values ranged between 1.21 g cm−3 to 1.39 g cm−3 for Bd, 45% to 55% for P, and 4.29 mm h−1 to 13.61 mm h−1 for Ks. Although differences were not significant among treatments, Bd decreased 6.7% for CT, 5.6% for NT and 0.7% for VT. P increased 6% for CT, 5% for NT and 0.5% for VT. Ks for CT decreased 6% more than for NT and VT. Average yield was 13% less in NT compared to CT and VT. A long-term investigation is needed in order to determine the effects of tillage methods, in our particular environmental conditions.

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