Postplanting Nutritional Augmentation of Jeffrey Pine Seedlings on an Infertile Sierran Site

Broadcast fertilization with an array of amendments was investigated for its capacity to stimulate growth and enhance nutrition of a three-year-old Jeffrey pine (Pinus jeffreyi Grev. & Balf.) plantation growing on an acidic Sierra Nevada surface mine. Four formulations that differed in N source...

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Main Author: Roger F. Walker
Format: Article
Language:English
Published: Wiley 2011-01-01
Series:International Journal of Forestry Research
Online Access:http://dx.doi.org/10.1155/2011/980670
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author Roger F. Walker
author_facet Roger F. Walker
author_sort Roger F. Walker
collection DOAJ
description Broadcast fertilization with an array of amendments was investigated for its capacity to stimulate growth and enhance nutrition of a three-year-old Jeffrey pine (Pinus jeffreyi Grev. & Balf.) plantation growing on an acidic Sierra Nevada surface mine. Four formulations that differed in N source, duration of release, and the suite of nutrients provided were evaluated, with each applied using four rates. Free Flow 29-3-4, a conventional amendment featuring urea as its near exclusive N source, and High N 22-4-6, a controlled release formulation containing ammoniacal, nitrate, and urea N, were the most stimulatory while an organic formulation relying exclusively on a municipal biosolid N source, Milorganite 6-2-0, was the least so. The lowest application rates employed were inadequate while the most advantageous was not the highest rate for any formulation. Foliar analysis revealed that improved N nutrition was probably critical in the favorable growth responses to fertilization, that of P was a likely contributor, and amelioration of potential Mn toxicity may have assumed an accessory role.
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spelling doaj-art-231a962155e8410091b381137e9ed1b42025-02-03T05:57:40ZengWileyInternational Journal of Forestry Research1687-93681687-93762011-01-01201110.1155/2011/980670980670Postplanting Nutritional Augmentation of Jeffrey Pine Seedlings on an Infertile Sierran SiteRoger F. Walker0Department of Natural Resources and Environmental Science, University of Nevada, 1000 Valley Road, Reno, NV 89512, USABroadcast fertilization with an array of amendments was investigated for its capacity to stimulate growth and enhance nutrition of a three-year-old Jeffrey pine (Pinus jeffreyi Grev. & Balf.) plantation growing on an acidic Sierra Nevada surface mine. Four formulations that differed in N source, duration of release, and the suite of nutrients provided were evaluated, with each applied using four rates. Free Flow 29-3-4, a conventional amendment featuring urea as its near exclusive N source, and High N 22-4-6, a controlled release formulation containing ammoniacal, nitrate, and urea N, were the most stimulatory while an organic formulation relying exclusively on a municipal biosolid N source, Milorganite 6-2-0, was the least so. The lowest application rates employed were inadequate while the most advantageous was not the highest rate for any formulation. Foliar analysis revealed that improved N nutrition was probably critical in the favorable growth responses to fertilization, that of P was a likely contributor, and amelioration of potential Mn toxicity may have assumed an accessory role.http://dx.doi.org/10.1155/2011/980670
spellingShingle Roger F. Walker
Postplanting Nutritional Augmentation of Jeffrey Pine Seedlings on an Infertile Sierran Site
International Journal of Forestry Research
title Postplanting Nutritional Augmentation of Jeffrey Pine Seedlings on an Infertile Sierran Site
title_full Postplanting Nutritional Augmentation of Jeffrey Pine Seedlings on an Infertile Sierran Site
title_fullStr Postplanting Nutritional Augmentation of Jeffrey Pine Seedlings on an Infertile Sierran Site
title_full_unstemmed Postplanting Nutritional Augmentation of Jeffrey Pine Seedlings on an Infertile Sierran Site
title_short Postplanting Nutritional Augmentation of Jeffrey Pine Seedlings on an Infertile Sierran Site
title_sort postplanting nutritional augmentation of jeffrey pine seedlings on an infertile sierran site
url http://dx.doi.org/10.1155/2011/980670
work_keys_str_mv AT rogerfwalker postplantingnutritionalaugmentationofjeffreypineseedlingsonaninfertilesierransite