Regeneration of Nitrogen Fertility In Disturbed Soils Using Composts

Claassen, Victor P.; Carey, J.L.

doi:10.1080/1065657x.2004.10702173

Cited by 26 publications

(15 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This is interpreted to indicate that microbial immobilization consumed all available mineralized N. While this does not provide N for short term plant establishment, it suggests that a residual pool of microbial biomass N will be available for mineralization and release at a later time, when plant residues have been consumed and available C declines. In longer incubation experiments, composted yard waste, such as SC and GC have been shown to provide steady, long term N release rates similar to those of wild lands soils (Claassen and Carey, 2004). In the short term, these organic materials may act to buffer N release and to adsorb excess N released from high N content amendments.…”

Section: Comparison Of Lab Incubation N Release Rates With Field Plotmentioning

confidence: 97%

“…Because of the long duration of the incubation and greater variation within treatments, the standard of significance was relaxed to p ¼ 0Á10. decreasing (Claassen and Carey, 2004), so the duration of the slow but steady N release patterns of some organic amendments can be quite long, depending on the ratio of available C and N. Amendments that have high C contents (high ratios of available C to available N) can be expected to retain (immobilize) N within the amendment or microbial biomass for extended periods before it is released by mineralization. This phase will continue until the bioavailable C has been consumed, and declining microbial populations release the N contained in their biomass.…”

Section: Comparison Of Long-term N Release Rates Between Various Matementioning

confidence: 98%

“…It will be difficult to supply this much N using some of the faster N release materials without generating excessive N availability, unless multiple, small applications are made. Some organic materials, however, have slower overall release rates, which can be used to supply both the large N amounts needed, while maintaining a slow enough N release rate that soluble N is not lost to watersheds (Claassen and Carey, 2004). Blends of two different types of materials, such as organic-based amendments having higher N release rates with materials having low rates (such as uncured composts with high C contents), may provide suitable N release characteristics for specific field sites.…”

Section: Comparison Of Lab Incubation N Release Rates With Field Plotmentioning

confidence: 99%

See 2 more Smart Citations

Comparison of slow‐release nitrogen yield from organic soil amendments and chemical fertilizers and implications for regeneration of disturbed sites

Claassen

Carey

2006

Land Degrad Dev

View full text Add to dashboard Cite

Soil amendments are commonly used to regenerate nutrient levels on disturbed construction sites or mined lands prior to revegetation. Management of nitrogen (N) inputs to the degraded substrates is difficult because the low level of ambient fertility on disturbed substrates requires large total N inputs to sustain revegetative growth, but it also requires low N bioavailability in order to avoid weedy invasion and eutrophication of local watersheds. Commonly available soil amendment materials have a wide variety of N contents and release rates, making specification of appropriate N amendments difficult. We compared N release rates of a variety of organic-based soil amendments and chemical fertilizers in long-term aerobic incubation chambers in the lab and at a field revegetation site. The N release rate from these amendments fell into four general groups: (1) rapid N release from soluble chemical fertilizer formulations, (2) longer, controlled N release from chemical-based, slow-release formulations, and a two-phase release pattern (rapid initial phase, slower second phase) from (3) organic-based blends, as well as (4) unsupplemented municipal yard-waste composts. The release rates from organic-based amendments were about three times faster in the 308C laboratory incubations than in the cool, moist winter growing season at a field site in the Central Valley of California. Relative rates of N release can be compared between amendment materials to help guide selection of N amendments, according to the plant-growth goals of the revegetation project.

show abstract

Section: Comparison Of Lab Incubation N Release Rates With Field Plotmentioning

confidence: 97%

Section: Comparison Of Long-term N Release Rates Between Various Matementioning

confidence: 98%

Section: Comparison Of Lab Incubation N Release Rates With Field Plotmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of slow‐release nitrogen yield from organic soil amendments and chemical fertilizers and implications for regeneration of disturbed sites

Claassen

Carey

2006

Land Degrad Dev

View full text Add to dashboard Cite

show abstract

“…When used in infertile soils, N immobilization will occur for an extended period due to incorporation into microbial biomass, with potential negative consequences for vegetation initially, but fertilization with a readily available N source may alleviate the period of this immobilization. On the other hand, slower degradation of the material may provide the best long term benefit as leaching losses would be minimized and N inputs would more closely resemble natural soils, as was found with yard waste compost that led to net immobilization initially (Claassen and Carey, 2004). For vegetation that requires significant N inputs, the mature compost would work well as it provided a steady and significant amount of N throughout the 90 d. In settings where available N could be detrimental, such as native plant restorations or in other instances where weed pressure is undesirable and detrimental, Fluff application could be a simple way to decrease available N in the short term, but would most likely provide a slowly available source over the longer term.…”

Section: Fluff C Mineralization Analysismentioning

confidence: 99%

New Municipal Solid Waste Processing Technology Reduces Volume and Provides Beneficial Reuse Applications for Soil Improvement and Dust Control

Torbert¹,

Gebhart²,

Busby³

2011

Integrated Waste Management - Volume I

View full text Add to dashboard Cite

“…Research has demonstrated that SMN concentrations may be reduced via N immobilization by the applications of wheat straw [19][20][21], yard waste [22][23][24], and oily food waste [16,25,26]. In the aforementioned studies, immobilized N was derived from fertilizers or indigenous SMN.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Post-Harvest Organic Carbon Amendments as a Strategy to Minimize Nitrogen Losses in Cole Crop Production

Congreves¹,

Vyn²,

Eerd³

2014

Agricultural Resource Use and Management

View full text Add to dashboard Cite

Abstract:Cole crops (Brassica vegetables) can pose a significant risk for N losses during the post-harvest period due to substantial amounts of readily mineralizable N in crop residues. Amending the soil with organic C has the potential to immobilize N and thereby reduce the risk for N losses. Four field trials were conducted to determine the effects of organic C amendments (OCA) on N dynamics and spring wheat (Triticum durum L.) harvest parameters proceeding early-and late-broccoli (Brassica olecerea var italica L.) systems in 2009 and 2010. The experimental controls represented the traditional grower practice of incorporated broccoli crop residue (CR-control) and the pre-plant application of N fertilizer (CRN-control) to subsequent spring wheat. Alternative practices were compared to the controls, which included broccoli crop residue removal (CR-removal), an oat (Avena sativa L.) cover crop (CC-oat), and three different OCA of wheat straw (OCA-straw), yard waste (OCA-yard), or used cooking oil (OCA-oil). The treatments, which demonstrated reduced autumn soil mineral N (SMN) concentrations after broccoli harvest, relative to the CR-control, were CR-removal, OCA-straw, and OCA-oil. Although CR-removal and OCA-straw indicated a reduced potential for autumn soil N losses in the early-broccoli system, these practices are not recommended for growers because subsequent spring wheat yield and profit margins were reduced compared to the CR-and CRN-controls. The OCA-oil reduced autumn SMN concentrations by 53 to 112 kg N ha relative to the CR-control after both early-and late-broccoli harvest, suggesting a larger potential for reduced autumn soil N losses, compared to all other treatments. No detrimental effects resulted from the OCA-oil OPEN ACCESSAgronomy 2013, 3 182 treatment on the subsequent spring yield or grain N. The OCA-oil reduced spring wheat profit margins relative to the CR-control, like the OCA-straw and CR-removal treatments, however profit margins were similar between the OCA-oil and the CRN-control. Therefore, in areas with a high risk of environmental N contamination, growers should consider the OCA-oil practice after cole crop harvest to minimize the risk of N losses.

show abstract

Regeneration of Nitrogen Fertility In Disturbed Soils Using Composts

Cited by 26 publications

References 15 publications

Comparison of slow‐release nitrogen yield from organic soil amendments and chemical fertilizers and implications for regeneration of disturbed sites

Comparison of slow‐release nitrogen yield from organic soil amendments and chemical fertilizers and implications for regeneration of disturbed sites

New Municipal Solid Waste Processing Technology Reduces Volume and Provides Beneficial Reuse Applications for Soil Improvement and Dust Control

Evaluation of Post-Harvest Organic Carbon Amendments as a Strategy to Minimize Nitrogen Losses in Cole Crop Production

Contact Info

Product

Resources

About