Estimating Plant Available Nitrogen in Biosolids: A Revision

Gilmour, J. T.; Wilson, Steve; Cogger, Craig; Jacobs, Lee; Evanylo, Greg; Sullivan, Dan M.

doi:10.2175/193864700785378149

Cited by 9 publications

(7 citation statements)

References 1 publication

(1 reference statement)

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“…Land application is also limited by agronomic loading rates of plant available nitrogen (N) in biosolids (Gilmour and Skinner, 1998). Plant available N is related to total inorganic N and a fraction of mineralization of organic N during biosolids decomposition (Gilmour and Skinner, 1998), although composition ratio changes with age and origin of the biosolids (Bernal et al, 1998; Rouch et al, 2011). Clearly, suitable amendment materials need to be low cost, readily available, and easy to transport and apply.…”

Section: Biosolids: Resource and Disposalmentioning

confidence: 99%

Potential Environmental Benefits from Blending Biosolids with Other Organic Amendments before Application to Land

et al. 2017

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Section: Biosolids: Resource and Disposalmentioning

confidence: 99%

Potential Environmental Benefits from Blending Biosolids with Other Organic Amendments before Application to Land

et al. 2017

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“…Further study is warranted to determine what mechanisms accounted for the higher NO 3 -N concentrations in biosolids treated fields and to develop biosolids N management practices that will decrease any potential for NO 3 -N losses. Such study should incorporate computer simulation models for predicting biosolids N mineralization (Gilmour et al, 2000). Increased surface soil P levels could be an environmental concern, particularly in watersheds with excessive P in surface waters.…”

Section: Discussionmentioning

confidence: 99%

Effects of Agronomic Biosolids Utilization on Soil Quality

Stehouwer¹,

Shober²

2003

proc water environ fed

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Land application of biosolids as a fertilizer amendment to agricultural land is a controversial issue despite the long history of the practice. Public concerns surrounding biosolids application include potential pollution of soils, crop tissue and groundwater by excess nutrients and trace elements that are present in biosolids. This 3-year study was designed to assess the effects of long-term biosolids application on the quality of soils and crop tissue in Pennsylvania. This study is unique in that these effects were assessed at actual agricultural biosolids application sites, rather than at highly controlled research plots. Soil and crop tissue samples were collected in the fall of each year, from 18 farms throughout the state and tested for nutrients, trace elements and other soil quality parameters. Soil samples were collected from depth increments of 1-10, 10-20, and 20-40 cm, and crop tissue samples were collected from the same locations as the soil samples. Within each farm, soil and crop tissue parameters from a field that had received biosolids (treated) were compared with those from a field that never received biosolids (control). The paired fields within each farm (treated and control) had similar soil type and similar cropping histories, so that the primary difference between members of a pair was the application of biosolids. For each parameter measured, the average of all within farm differences was compared to variability across all farms to determine statistical significance of that parameter. This was done for each year individually and for combined analysis of all 3 years of the study. Soil pH, cation exchange capacity, and organic C were similar in treated and control fields. The combined 3-year analysis showed that soil concentrations of Cu, Cr, Hg, Mo, Mn, Pb and Zn were higher in the treated fields than the control fields. These differences, while statistically significant, were small (<5% of CPLR) when compared to the EPA Part 503 cumulative pollutant loading rates for the elements, indicating the differences are too small to be associated with significant risk to crops, humans or animals. These results also indicate the current requirements for biosolids analysis and calculating trace element cumulative loading is adequately tracking trace element accumulation in soils. There was evidence that biosolids treated fields had more post-growing season soil NO 3 -and P, and less soil K than control fields. This indicates a need to reassess and improve biosolids nutrient management. There were no significant differences in the concentrations of any nutrients or trace elements in crop tissue grown on treated or control fields at any time during the study.

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“…Biosolid doses (dry basis) were similar to those used in field studies conducted to determine the plant-available N for agricultural crops (Gilmour et al 2000). The available N of biosolids applied was in the range recommended for fertilization with chemical fertilizers for irrigated grasses in semi-arid rangelands (22-224 kg N ha −1 ) (Vallentine 1989).…”

Section: Methodsmentioning

confidence: 99%

Heavy-Metal Uptake and Growth ofBoutelouaSpecies in Semi-arid Soils Amended with Biosolids

Lara-Villa

Flores-Flores

Alatriste‐Mondragón

et al. 2011

Communications in Soil Science and Plant Analysis

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An experiment was conducted in three wild grass species of Bouteloua genus to compare the effect of application of biosolids on the accumulation of heavy metals, biomass production, and nutrient uptake. Biosolids were applied at rates of 0, 3.5, 7, and 10.5 Mg ha −1 to two different soil types collected from the southern Chihuahuan Desert. The shoot biomass of B. gracilis (BOGR) and B. scorpioides (BOSC) was two to three times greater than the control while in B. curtipendula (BOCU) in was 75% in both soils. In BOGR, nitrogen and phosphorus uptake were 4-4.5 times greater than the control in calcareous soil. With few exceptions, there was no significant difference of heavy-metal concentrations (copper, chromium, arsenic, nickel, and zinc) in the plant tissues compared to the control. The application of biosolids showed interspecies variability in growth response and nutrient uptake with a minimal risk of heavy-metal uptake for Bouteloua wild species.

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Estimating Plant Available Nitrogen in Biosolids: A Revision

Cited by 9 publications

References 1 publication

Potential Environmental Benefits from Blending Biosolids with Other Organic Amendments before Application to Land

Potential Environmental Benefits from Blending Biosolids with Other Organic Amendments before Application to Land

Effects of Agronomic Biosolids Utilization on Soil Quality

Heavy-Metal Uptake and Growth ofBoutelouaSpecies in Semi-arid Soils Amended with Biosolids

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