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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/pdfs/71/5/AJ0710050892
Last checked: 12/09/2016
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Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Keisling, T. C.;
Matocha, J. E.;
Rouquette, F. M. Jr. |
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| Author Affiliation: | Keisling: Assistant Professor, Department of Agronomy, University of Arkansas Southwest Research and Extention Center, Monticello, Arkansas; Matocha: Associate Professor, Texas A&M University Agricultural Research and Extention Center, Overton, Texas; Rouquette: Professor, Texas A&M University Agricultural Research and Extention Center, Corpus Christi, Texas |
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| Title: | Potassium fertilization influences on Coastal bermudagrass rhizomes, roots, and stand |
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| Source: | Agronomy Journal. Vol. 71, No. 5, September/October 1979, p. 892-894. |
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| Publishing Information: | Madison, WI: American Society of Agronomy |
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| # of Pages: | 3 |
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| Keywords: | TIC Keywords: Potassium fertilizers; Nutritional requirements; Fertilization rates; Disease evaluation; Rhizome growth; Winterkill; Cynodon dactylon; Hardening; Root growth; Regrowth
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| Abstract/Contents: | "Losses of yield and stand of 'Coastal' bermudagrass (Cynodon dactylon L. Pers.) due to inadequate K fertility have been observed numerous times. Stand deterioration has been attributed to "winter-kill", disease, and lack of "physiological hardening" of the plants. Since all the aerial parts of the bermudagrass plant die when temperatures are as low as -2 to -3 C, underground stems (rhizomes) are important for maintaining and generating growth in the spring. Studies were conducted to investigate the effects of K fertility practices on rhizome production and rhizome regrowth reserve as related to certain stand and tissue characteristics. Old P and K factorial rate studies on Darco (Grossarenic Paleudult; loamy, siliceous, thermic) and Cuthbert (Typic Hapludult; clayey, mixed, thermic) soils were used. Annual fertility rates used on prior experiments were 0, 112. and 224 kg/ha K, 0 to 136 kg/ha P, and 364 to 504 kg/ha N. The influence of residual P and K fertility on stand ratings, rhizome production, and Ca, Mg, and K content of the forage was measured. Stand ratings in the spring were found to be related to rhizome production. The first increment of 112 kg/ha of K increased rhizomes 800 kg/ha on the Darco soil. Rhizome production required higher rates of K on the Cuthbert soil which gave a response of 1,500 kg/ha of rhizomes to the highest K rate used. Lowering the K rate resulted in lower K in the tissue and an observable loss of vigor in the root system. Depending on the soil K reserve, production levels ,and previous fertility practices, Coastal bermudagrass hay meadows on which K fertility levels are inadequate may exhibit the characteristics described above." |
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| Language: | English |
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| References: | 14 |
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| See Also: | Other items relating to: Potassium |
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| Note: | Pictures, b/w
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Keisling, T. C., J. E. Matocha, and F. M. Jr. Rouquette. 1979. Potassium fertilization influences on Coastal bermudagrass rhizomes, roots, and stand. Agron. J. 71(5):p. 892-894. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/pdfs/71/5/AJ0710050892
Last checked: 12/09/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: S 22 .A45 |
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