Growth response and recovery of 15N-fertilizer one and eight growing seasons after application to lodgepole pine in British Columbia

Preston, Caroline M.; Mead, D. J.

doi:10.1016/0378-1127(94)90172-4

Cited by 64 publications

(55 citation statements)

References 20 publications

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“…Similar results specific to fertilizer N immobilization in the soil have also been shown in forested systems [74][75][76][77][78]. Despite these results, laboratory experiments using a bioassay approach with soil collected from long term 15 N tracer experiments show a measureable uptake of 15 N labeled fertilizers by seedlings from both forest floor and mineral soil sources a decade after fertilization [79].…”

Section: Discussionsupporting

confidence: 67%

Understanding the Fate of Applied Nitrogen in Pine Plantations of the Southeastern United States Using 15N Enriched Fertilizers

Raymond

Fox

Strahm

2016

Forests

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This study was conducted to determine the efficacy of using enhanced efficiency fertilizer (EEFs) products compared to urea to improve fertilizer nitrogen use efficiency (FNUE) in forest plantations. All fertilizer treatments were labeled with 15 N (0.5 atom percent) and applied to 100 m 2 circular plots at 12 loblolly pine stands (Pinus taeda L.) across the southeastern United States. Total fertilizer N recovery for fertilizer treatments was determined by sampling all primary ecosystem components and using a mass balance calculation. Significantly more fertilizer N was recovered for all EEFs compared to urea, but there were generally no differences among EEFs. The total fertilizer N ecosystem recovery ranged from 81.9% to 84.2% for EEFs compared to 65.2% for urea. The largest amount of fertilizer N recovered for all treatments was in the loblolly pine trees (EEFs: 38.5%-49.9%, urea: 34.8%) and soil (EEFs: 30.6%-38.8%, urea: 28.4%). This research indicates that a greater ecosystem fertilizer N recovery for EEFs compared to urea in southeastern pine plantations can potentially lead to increased FNUE in these systems.

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Section: Discussionsupporting

confidence: 67%

Understanding the Fate of Applied Nitrogen in Pine Plantations of the Southeastern United States Using 15N Enriched Fertilizers

Raymond

Fox

Strahm

2016

Forests

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“…High recovery by branches is one of the main differences between soil and foliage application. In soil application, more 15 N is recovered in foliage than in branches (Buchmann et al 1995;Nave and Curtis 2011;Preston and Mead 1994). Twigs and branches show the most striking comparison between studies of N application at the soil or canopy level.…”

Section: Naturalmentioning

confidence: 98%

fate of 15N-labeled ammonium and nitrate applied on trees canopy in a mature balsam-fir stand, Quebec /

Gélinas-Pouliot¹

2013

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Canopy uptake of atmospherically deposited nitrogen (N) NO 3~ was found in aboveground vegetation (64.3 and 70.7%, respectively) as compared to the litter layer (L) and soil organic horizons (FH) (35.7 and 29.4%, respectively). Overall, twigs showed the highest recovery for both ions (49.9 and 63.0%, respectively). Contrary to studies where N is added directly to the soils, these data show that aboveground biomass may capture N in amounts comparable to or higher than the soil when the tracer is applied in situ directly on the canopy in a way that reproduces natural N deposition processes.

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“…Plant uptake was still an important N retention mechanism, however, in an old-growth, uneven-aged forest in Washington state (Edmonds et al 1995). In some forests, N retention in understory vegetation can be significant relative to the overstory (Melin et al 1983, Mugasha and Pluth 1994, Preston and Mead 1994, Buchmann et al 1996.…”

Section: Retention In Plant Biomassmentioning

confidence: 99%

Nitrogen Excess in North American Ecosystems: Predisposing Factors, Ecosystem Responses, and Management Strategies

Fenn¹,

Poth²,

Aber³

et al. 1998

Ecological Applications

328

492

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Abstract. Most forests in North America remain nitrogen limited, although recent studies have identified forested areas that exhibit symptoms of N excess, analogous to overfertilization of arable land. Nitrogen excess in watersheds is detrimental because of disruptions in plant/soil nutrient relations, increased soil acidification and aluminum mobility, increased emissions of nitrogenous greenhouse gases from soil, reduced methane consumption in soil, decreased water quality, toxic effects on freshwater biota, and eutrophication of coastal marine waters. Elevated nitrate ( ) loss to groundwater Ϫ

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Growth response and recovery of 15N-fertilizer one and eight growing seasons after application to lodgepole pine in British Columbia

Cited by 64 publications

References 20 publications

Understanding the Fate of Applied Nitrogen in Pine Plantations of the Southeastern United States Using 15N Enriched Fertilizers

Understanding the Fate of Applied Nitrogen in Pine Plantations of the Southeastern United States Using 15N Enriched Fertilizers

fate of 15N-labeled ammonium and nitrate applied on trees canopy in a mature balsam-fir stand, Quebec /

Nitrogen Excess in North American Ecosystems: Predisposing Factors, Ecosystem Responses, and Management Strategies

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