No-tillage and manure applications increase aggregation and improve nutrient retention in a sandy-loam soil
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Published source details
Jiao Y., Whalen J.K. & Hendershot W.H. (2006) No-tillage and manure applications increase aggregation and improve nutrient retention in a sandy-loam soil. Geoderma, 134, 24-33.
Published source details Jiao Y., Whalen J.K. & Hendershot W.H. (2006) No-tillage and manure applications increase aggregation and improve nutrient retention in a sandy-loam soil. Geoderma, 134, 24-33.
Actions
This study is summarised as evidence for the following.
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Amend the soil with manures and agricultural composts Action Link |
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Use crop rotation Action Link |
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Change tillage practices Action Link |
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Amend the soil with manures and agricultural composts
A randomized, replicated experiment in 2003 on sandy-loam soil in Quebec, Canada (Jiao et al. 2006) found that the application of 30 and 45 Mg/ha/y of composted manure produced a higher proportion of large soil aggregates (35% and 41% respectively) than inorganic fertilizer application. There were four replicates of two tillage systems: conventional (tandem disk to 10 cm soil depth, mouldboard plough 20 cm) and no-tillage. Within these were maize Zea mays, soybean Glycine max/maize and maize/soybean rotations (in 20 x 24 m plots) and then within these were four fertilizer treatments: inorganic fertilizers, composted cattle manure at 30 or 45 Mg/ha/y, and the two mixed together (in 20 x 6 m areas of plots). Soil samples (to 10 cm depth) were taken after crop harvest. Soil carbon, nitrogen, phosphorus and the size of aggregates were measured.
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Use crop rotation
A randomized, replicated experiment in 2003 on a sandy-loam soil in Quebec, Canada (Jiao et al. 2006) found similar sized soil aggregates in continuous maize Zea mays (1.89 mm) and in a soybean Glycine max-maize rotation (1.90 mm). There were four replicates of two tillage systems: conventional; and no-tillage. Within these were continuous maize, soybean -maize, and maize-soybean rotations (in 20 x 24 m plots). Within these were four fertilizer treatments: inorganic fertilizers, composted cattle manure, and the two mixed together (tested in 20 x 6 m plot sections). Soil samples (to 10 cm depth) were taken after crop harvest from the maize phase in October 2003. The size of soil aggregates was measured using a wet-sieving procedure. Soil carbon, nitrogen, and phosphorus were measured using finely ground soil samples.
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Change tillage practices
A randomized, replicated experiment in 2003 on a sandy-loam soil in Quebec, Canada (Jiao et al. 2006) found that adopting no-tillage increased soil aggregation (accumulation of soil particles) and nutrient retention under maize Zea mays production. The proportion of larger aggregates (soil particles larger than 2 mm) was greater under no-tillage (37.2%) compared to conventional tillage (31%). C, N and P concentrations were three, five and eight times higher (respectively) in smaller aggregates (0.25-0.053 mm) than larger aggregates (>2 mm). There were four replicates of two tillage systems: conventional (tandem disk 10 cm deep, mouldboard plough 20 cm) and no-tillage. Within these were maize Zea mays, soybean Glycine max/maize, maize/soybean rotations (20x 24 m). Within these were four fertilizer treatments: inorganic fertilizers, composted cattle manure, and the two mixed together (20 x 6 m plots). Soil samples (10 cm) were taken after crop harvest. Soil carbon, nitrogen, phosphorus and size of aggregates were measured.
Output references
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