Effects of N, P, and K Fertilization on Barley Grown in a Newly Cleared Subarctic Soil 1
Abstract Alaska has vast areas of undeveloped land with the potential for agricultural expansion. To develop renewable resources from oil royalty monies, the state has initiated a 24,000 ha agricultural demonstration project near Delta Junction, Alaska. Little is currently known, however, concerning...
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crwiley:10.2134/agronj1982.00021962007400040024x 2024-04-07T07:56:08+00:00 Effects of N, P, and K Fertilization on Barley Grown in a Newly Cleared Subarctic Soil 1 Michaelson, G. J. Loynachan, T. E. Wooding, F. J. Mitchell, G. A. 1982 http://dx.doi.org/10.2134/agronj1982.00021962007400040024x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2134%2Fagronj1982.00021962007400040024x https://onlinelibrary.wiley.com/doi/pdf/10.2134/agronj1982.00021962007400040024x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Agronomy Journal volume 74, issue 4, page 694-699 ISSN 0002-1962 1435-0645 Agronomy and Crop Science journal-article 1982 crwiley https://doi.org/10.2134/agronj1982.00021962007400040024x 2024-03-08T03:49:43Z Abstract Alaska has vast areas of undeveloped land with the potential for agricultural expansion. To develop renewable resources from oil royalty monies, the state has initiated a 24,000 ha agricultural demonstration project near Delta Junction, Alaska. Little is currently known, however, concerning the natural fertility of these virgin soils. A 4 3 factorial experiment was established, with barley ( Hordeum vulgare L. var. ‘Otra’) as the test crop, to determine responses to fertilization the first 2 years after clearing on a Typic Cryopsamment soil. Fertilizer was applied before seeding each year at 0, 45, 90, and 135 kg N/ha; 0, 34, 68, and 102 kg P/ha; and 0, 34, 68, and 102 kg K/ha. Grain yields, protein contents, and subsequent soil‐test levels were measured. Nitrogen increased grain yields from 2 quintal/ha with no applied N in 1979 to 25 quintal/ha with 135 kg N/ha and from 4 quintal/ha with no applied N in 1980 to 31 quintal/ha with 135 kg N/ha. The yield response to N was linear throughout the 0 to 135 kg N/ha range in 1979, and both the linear and quadratic regression terms were significant in 1980. Cooler initial soil temperatures, lack of native residual nutrients, or N immobilization may have contributed to lower overall yields in 1979. Grain protein increased linearly with added N both years. Phosphorus increased yield up to 34 kg P/ha, with little response beyond that in either year. In 1979, both P and K were significant in increasing the yield response to N. In 1980, only K increased the yield response to N. Neither P nor K fertilization significantly increased grain protein contents. Multiple‐regression equations were developed to predict grain yields and protein contents with rates of fertilizer applied. When considering only N, P, and K fertilizer additions, equations with relatively high coefficients of determination were obtained for the first 2 years of production (Yield: R 2 = 0.929,0.937 for 1979 and 1980; and protein: R 2 = 0.684, 0.842 for 1979 and 1980, respectively). Thus, the ... Article in Journal/Newspaper Subarctic Alaska Wiley Online Library Agronomy Journal 74 4 694 699 |
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Agronomy and Crop Science |
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Agronomy and Crop Science Michaelson, G. J. Loynachan, T. E. Wooding, F. J. Mitchell, G. A. Effects of N, P, and K Fertilization on Barley Grown in a Newly Cleared Subarctic Soil 1 |
topic_facet |
Agronomy and Crop Science |
description |
Abstract Alaska has vast areas of undeveloped land with the potential for agricultural expansion. To develop renewable resources from oil royalty monies, the state has initiated a 24,000 ha agricultural demonstration project near Delta Junction, Alaska. Little is currently known, however, concerning the natural fertility of these virgin soils. A 4 3 factorial experiment was established, with barley ( Hordeum vulgare L. var. ‘Otra’) as the test crop, to determine responses to fertilization the first 2 years after clearing on a Typic Cryopsamment soil. Fertilizer was applied before seeding each year at 0, 45, 90, and 135 kg N/ha; 0, 34, 68, and 102 kg P/ha; and 0, 34, 68, and 102 kg K/ha. Grain yields, protein contents, and subsequent soil‐test levels were measured. Nitrogen increased grain yields from 2 quintal/ha with no applied N in 1979 to 25 quintal/ha with 135 kg N/ha and from 4 quintal/ha with no applied N in 1980 to 31 quintal/ha with 135 kg N/ha. The yield response to N was linear throughout the 0 to 135 kg N/ha range in 1979, and both the linear and quadratic regression terms were significant in 1980. Cooler initial soil temperatures, lack of native residual nutrients, or N immobilization may have contributed to lower overall yields in 1979. Grain protein increased linearly with added N both years. Phosphorus increased yield up to 34 kg P/ha, with little response beyond that in either year. In 1979, both P and K were significant in increasing the yield response to N. In 1980, only K increased the yield response to N. Neither P nor K fertilization significantly increased grain protein contents. Multiple‐regression equations were developed to predict grain yields and protein contents with rates of fertilizer applied. When considering only N, P, and K fertilizer additions, equations with relatively high coefficients of determination were obtained for the first 2 years of production (Yield: R 2 = 0.929,0.937 for 1979 and 1980; and protein: R 2 = 0.684, 0.842 for 1979 and 1980, respectively). Thus, the ... |
format |
Article in Journal/Newspaper |
author |
Michaelson, G. J. Loynachan, T. E. Wooding, F. J. Mitchell, G. A. |
author_facet |
Michaelson, G. J. Loynachan, T. E. Wooding, F. J. Mitchell, G. A. |
author_sort |
Michaelson, G. J. |
title |
Effects of N, P, and K Fertilization on Barley Grown in a Newly Cleared Subarctic Soil 1 |
title_short |
Effects of N, P, and K Fertilization on Barley Grown in a Newly Cleared Subarctic Soil 1 |
title_full |
Effects of N, P, and K Fertilization on Barley Grown in a Newly Cleared Subarctic Soil 1 |
title_fullStr |
Effects of N, P, and K Fertilization on Barley Grown in a Newly Cleared Subarctic Soil 1 |
title_full_unstemmed |
Effects of N, P, and K Fertilization on Barley Grown in a Newly Cleared Subarctic Soil 1 |
title_sort |
effects of n, p, and k fertilization on barley grown in a newly cleared subarctic soil 1 |
publisher |
Wiley |
publishDate |
1982 |
url |
http://dx.doi.org/10.2134/agronj1982.00021962007400040024x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.2134%2Fagronj1982.00021962007400040024x https://onlinelibrary.wiley.com/doi/pdf/10.2134/agronj1982.00021962007400040024x |
genre |
Subarctic Alaska |
genre_facet |
Subarctic Alaska |
op_source |
Agronomy Journal volume 74, issue 4, page 694-699 ISSN 0002-1962 1435-0645 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.2134/agronj1982.00021962007400040024x |
container_title |
Agronomy Journal |
container_volume |
74 |
container_issue |
4 |
container_start_page |
694 |
op_container_end_page |
699 |
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1795673851963637760 |