Foliar Potassium Fertilizer Additives Affect Soybean Response and Weed Control with Glyphosate
Research in 2004 and 2005 determined the effects of foliar-applied K-fertilizer sources (0-0-62-0 (%N-%P2O5-%K2O-%S), 0-0-25-17, 3-18-18-0, and 5-0-20-13) and additive rates (2.2, 8.8, and 17.6 kg K ha−1) on glyphosate-resistant soybean response and weed control. Field experiments were conducted at...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Agronomy |
| Online Access: | http://dx.doi.org/10.1155/2012/461894 |
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| author | Kelly A. Nelson Peter P. Motavalli William E. Stevens John A. Kendig David Dunn Manjula Nathan |
| author_facet | Kelly A. Nelson Peter P. Motavalli William E. Stevens John A. Kendig David Dunn Manjula Nathan |
| author_sort | Kelly A. Nelson |
| collection | DOAJ |
| description | Research in 2004 and 2005 determined the effects of foliar-applied K-fertilizer sources (0-0-62-0 (%N-%P2O5-%K2O-%S), 0-0-25-17, 3-18-18-0, and 5-0-20-13) and additive rates (2.2, 8.8, and 17.6 kg K ha−1) on glyphosate-resistant soybean response and weed control. Field experiments were conducted at Novelty and Portageville with high soil test K and weed populations and at Malden with low soil test K and weed populations. At Novelty, grain yield increased with fertilizer additives at 8.8 kg K ha−1 in a high-yield, weed-free environment in 2004, but fertilizer additives reduced yield up to 470 kg ha−1 in a low-yield year (2005) depending on the K source and rate. At Portageville, K-fertilizer additives increased grain yield from 700 to 1160 kg ha−1 compared to diammonium sulfate, depending on the K source and rate. At Malden, there was no yield response to K sources. Differences in leaf tissue K (P=0.03), S (P=0.03), B (P=0.0001), and Cu (P=0.008) concentrations among treatments were detected 14 d after treatment at Novelty and Malden. Tank mixtures of K-fertilizer additives with glyphosate may provide an option for foliar K applications. |
| format | Article |
| id | doaj-art-08723ef4eb034649acc517150cc38139 |
| institution | Kabale University |
| issn | 1687-8159 1687-8167 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Agronomy |
| spelling | doaj-art-08723ef4eb034649acc517150cc381392025-02-03T01:20:29ZengWileyInternational Journal of Agronomy1687-81591687-81672012-01-01201210.1155/2012/461894461894Foliar Potassium Fertilizer Additives Affect Soybean Response and Weed Control with GlyphosateKelly A. Nelson0Peter P. Motavalli1William E. Stevens2John A. Kendig3David Dunn4Manjula Nathan5Division of Plant Science, Lee Greenley Jr. Memorial Research Center, University of Missouri, Novelty, MO 63460, USADepartment of Soil, Environmental and Atmospheric Science, University of Missouri, Columbia, MO 65211, USADivision of Plant Science, University of Missouri, Portageville, MO 63873, USAGBE Herbicide Field Testing Lead, Monsanto, Chesterfield, MO 63017, USADivision of Plant Science, University of Missouri, Portageville, MO 63873, USADivision of Plant Science, University of Missouri, Columbia, MO 65211, USAResearch in 2004 and 2005 determined the effects of foliar-applied K-fertilizer sources (0-0-62-0 (%N-%P2O5-%K2O-%S), 0-0-25-17, 3-18-18-0, and 5-0-20-13) and additive rates (2.2, 8.8, and 17.6 kg K ha−1) on glyphosate-resistant soybean response and weed control. Field experiments were conducted at Novelty and Portageville with high soil test K and weed populations and at Malden with low soil test K and weed populations. At Novelty, grain yield increased with fertilizer additives at 8.8 kg K ha−1 in a high-yield, weed-free environment in 2004, but fertilizer additives reduced yield up to 470 kg ha−1 in a low-yield year (2005) depending on the K source and rate. At Portageville, K-fertilizer additives increased grain yield from 700 to 1160 kg ha−1 compared to diammonium sulfate, depending on the K source and rate. At Malden, there was no yield response to K sources. Differences in leaf tissue K (P=0.03), S (P=0.03), B (P=0.0001), and Cu (P=0.008) concentrations among treatments were detected 14 d after treatment at Novelty and Malden. Tank mixtures of K-fertilizer additives with glyphosate may provide an option for foliar K applications.http://dx.doi.org/10.1155/2012/461894 |
| spellingShingle | Kelly A. Nelson Peter P. Motavalli William E. Stevens John A. Kendig David Dunn Manjula Nathan Foliar Potassium Fertilizer Additives Affect Soybean Response and Weed Control with Glyphosate International Journal of Agronomy |
| title | Foliar Potassium Fertilizer Additives Affect Soybean Response and Weed Control with Glyphosate |
| title_full | Foliar Potassium Fertilizer Additives Affect Soybean Response and Weed Control with Glyphosate |
| title_fullStr | Foliar Potassium Fertilizer Additives Affect Soybean Response and Weed Control with Glyphosate |
| title_full_unstemmed | Foliar Potassium Fertilizer Additives Affect Soybean Response and Weed Control with Glyphosate |
| title_short | Foliar Potassium Fertilizer Additives Affect Soybean Response and Weed Control with Glyphosate |
| title_sort | foliar potassium fertilizer additives affect soybean response and weed control with glyphosate |
| url | http://dx.doi.org/10.1155/2012/461894 |
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