Wet Sieving Apparatus for Stability Analysis of Soil Aggregates

Bourget, Steve; Kemp, J. G.

doi:10.4141/cjss57-009

Cited by 26 publications

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“…One hundred grams of each air-dried soil sample was spread on the top of a nest of sieves with openings of 1000 and 250 µm. The sieves were shaken in deionized water for 5 min using an apparatus similar to that described by Bourget and Kemp (1957), and slaking was allowed to occur as aggregates were directly immersed in water without prewetting. After shaking, the aggregates on each sieve were collected by washing with deionized water to yield fractions >1000, 250-1000 and <250 µm.…”

Section: Water-stable Aggregates and C And N Analysesmentioning

confidence: 99%

Particulate and mineral-associated organic matter in water-stable aggregates as affected by mineral fertilizer and manure applications

Aoyama¹,

Angers²,

N’Dayegamiye³

1999

Can. J. Soil. Sci.

172

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Aoyama, M., Angers, D. A. and N'Dayegamiye, A. 1999. Particulate and mineral-associated organic matter in water-stable aggregates as affected by mineral fertilizer and manure applications. Can. J. Soil Sci. 79: 295-302. Application of cattle manure generally improves soil structure and organic matter (OM) content. However, changes in forms and location of OM within the aggregate structure are less well known. The effects of long-term (18-yr) applications of cattle manure (20 Mg ha -1 yr -1 ) and NPK fertilizer on the distribution of particulate and mineral-associated organic matter in water-stable aggregates were investigated in a Le Bras loam (Humic Gleysol). Soil samples from the 0-to 10-cm depth were taken from the untreated control, NPK, manure and NPK + manure treatments. They were separated into four aggregate-size fractions (>1000 µm, 250-1000 µm, 53-250 µm, and <53 µm) by slaking air-dried soil, followed by wet sieving. Particulate (>53 µm) and mineral-associated OM (<53 µm) were separated from water-stable aggregates >53 µm by sieving after mechanical dispersion. After 18 yr, manure increased the OM level of the whole soil and favored formation of slaking-resistant macroaggregates (250-1000 µm). This effect was primarily a result of the OM added by the manure. In contrast, NPK fertilizer did not affect soil OM level or macroaggregation. The increase in OM induced by manure application was observed primarily in macroaggregates, and both as mineral-associated and particulate OM. However, manure did not change OM located in the fraction <53 µm confirming that recently deposited OM preferentially accumulates within the aggregate structure and not in the finely or non-aggregated material. Since previous studies have shown that most of the C in cattle manure is composed of coarse particles, we hypothesize that manure-derived OM first enters the soil primarily as particulate material, then, during decomposition, is transformed within the aggregate structure into mineralassociated material thereby contributing to aggregate stabilization.Key words: Cattle manure, mineral fertilization, particulate organic matter, soil structure Aoyama, M., Angers, D. A. et N'Dayegamiye, A. 1999. Influence de l'application de fertilisants mineraux et de fumier sur les formes de matière organique dans les agrégats stable à l'eau. Can. J. Soil Sci. 79: 295-302. L'incorporation de fumier de bovin au sol conduit généralement à l'amélioration de sa structure et de sa teneur en matière organique (MO). Cependant, les effets sur la nature et la localisation de la MO sont moins bien connus. Nous avons étudié les conséquences à long terme (18 années) de l'application de fumier de bovin (20 Mg ha -1 année -1 ) et de fertilisants minéraux sur la distribution de la MO fine et grossière dans les agrégats d'un loam Le Bras (Gleysol humique). Des échantillons de sol ont été prélevés de l'horizon 0-10 cm des parcelles témoin (sans amendement) et des parcelles traitées soit avec des fertilisants minéraux (NPK), du fumier de bovin, ou NPK + fumier....

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Section: Water-stable Aggregates and C And N Analysesmentioning

confidence: 99%

Particulate and mineral-associated organic matter in water-stable aggregates as affected by mineral fertilizer and manure applications

Aoyama¹,

Angers²,

N’Dayegamiye³

1999

Can. J. Soil. Sci.

172

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“…Duplicate samples of digesta from each organ were analysed for particle size distribution by a wet-sieving procedure similar to that used to determine water-stable aggregate in soils (Bourget and Kemp, 1957). Samples containing 10 g of dry matter were sieved for 16 hr through nests of four sieves (2, 1, 0-5 and 0-25 mm).…”

Section: Analytical Proceduresmentioning

confidence: 99%

Voluntary consumption of forage by sheep and its relation to the size and shape of particles in the digestive tract

Troelsen¹,

Campbell²

1968

Anim. Sci.

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“…Ten grams of field-moist aggregates of 1-2 mm were shaken in water on a 250-µm sieve under total immersion for 10 min. The equipment used was similar to that described by Bourget and Kemp (1957). The stable aggregates were oven-dried and weighed, and their mass expressed as a percentage of the total oven-dry mass of 1-2 mm aggregates.…”

Section: Methodsmentioning

confidence: 99%

Soil organic matter quality and aggregate stability under eight potato cropping sequences in a fine sandy loam of Prince Edward Island

Angers¹,

Edwards²,

Sanderson³

et al. 1999

Can. J. Soil. Sci.

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N. 1999. Soil organic matter quality and aggregate stability under eight potato cropping sequences in a fine sandy loam of Prince Edward Island. Can. J. Soil Sci. 79: 411-417. Soil degradation and soil organic matter (SOM) reduction have long been suspected to occur under intensive potato (Solanum tuberosum L.) production in Prince Edward Island. Thus, this study was conducted to evaluate the effect of eight potato cropping sequences involving barley (Hordeum vulgare L.), ryegrass (Lolium multiflorum L.), red clover (Trifolium pratense L.) and barley underseeded with red clover on aggregate stability and SOM properties of a Charlottetown fine sandy loam (Orthic Humo-Ferric Podzol). Total C and N, light-fraction (density < 1.7 g cm -3 ) C (LF-C) and light-fraction N (LF-N), microbial biomass C (MBC), carbohydrate content, alkaline phosphatase activity (APA) and aggregate stability were determined in the 0-to 15-cm soil layer in the 6th and 10th years of the trial. Average C and N contents were 20 to 27% greater in sequences that included 3 or 4 yr of potatoes and a high frequency of red clover than in a 9-yr potato sequence; and were attributed to the less frequent tillage and higher organic matter inputs associated with the forage component. The response for MBC, LF-C, LF-N and APA was greater than those for total C and N suggesting that the former parameters may better reveal SOM changes caused by variations in potato management than the latter. Light-fraction N was particularly sensitive to the inclusion of perennial legumes in the cropping sequence. Wet-aggregate stability was 33% higher after 6 yr in the sequence with 50% frequency of red clover than in the continuous potato system, but no effect was noted after 10 yr. The results of this study indicate that sequences which are limited to 30 to 40% of potatoes and have a high frequency of perennial forage such as red clover, lead to greater SOM content and quality of a Charlottetown fine sandy loam compared to continuous potatoes. Trends in aggregate stability generally followed those of SOM fractions but the effects were relatively smaller and varied with time. . La production intensive de pomme de terre (Solanum tuberosum L.) est souvent associée à la dégradation et la réduction de la matière organique des sols de l'Île-du-Prince-Édouard. Cette étude, effectuée sur un loam sableux fin de Charlottetown (Podzol humo-ferrique orthique), a évalué les effets de huit séquences culturales incluant la pomme de terre, l'orge (Hordeum vulgare L.), le ray-grass (Lolium multiflorum L.), le trèfle rouge (Trifolium pratense L.) en culture pure ou semé sous orge sur les propriétés de la matière organique et la stabilité des agrégats du sol. Les teneurs en C et N du sol entier et de la fraction légère (densité < 1.7 g cm -3 ) de la matière organique, les teneurs en biomasse microbienne et en glucides extraits à l'acide sulfurique, l'activité de la phosphatase alcaline et la stabilité des agrégats ont été déterminées dans la couche 0-15 cm de profondeur du sol dans la 6 e...

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Wet Sieving Apparatus for Stability Analysis of Soil Aggregates

Abstract: ABSTRACT

Cited by 26 publications

References 0 publications

Particulate and mineral-associated organic matter in water-stable aggregates as affected by mineral fertilizer and manure applications

Particulate and mineral-associated organic matter in water-stable aggregates as affected by mineral fertilizer and manure applications

Voluntary consumption of forage by sheep and its relation to the size and shape of particles in the digestive tract

Soil organic matter quality and aggregate stability under eight potato cropping sequences in a fine sandy loam of Prince Edward Island

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