Critical potassium deficiency levels for a grass legume pasture grown on soils of the subhumid zone of Nigeria
A greenhouse experiment was conducted to determine the critical deficiency levels of potassium (K) in the subhumid zone soils for predicting response of a mixture of Andropogon gayanus and Stylosanthes hamata cVerano to K application. Twenty coarse textured soils, having loamy sand to sandy loam tex...
| Autores principales: | , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Informa UK Limited
1995
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/28424 |
| _version_ | 1855523457266089984 |
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| author | Tening, A.S. Tarawali, G. Omueti, J.A.I. |
| author_browse | Omueti, J.A.I. Tarawali, G. Tening, A.S. |
| author_facet | Tening, A.S. Tarawali, G. Omueti, J.A.I. |
| author_sort | Tening, A.S. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | A greenhouse experiment was conducted to determine the critical deficiency levels of potassium (K) in the subhumid zone soils for predicting response of a mixture of Andropogon gayanus and Stylosanthes hamata cVerano to K application. Twenty coarse textured soils, having loamy sand to sandy loam textures and with exchangeable K contents ranging from 0.08 to 0.97 cmol/kg, were used. Two rates of K applied were 0 and 80 mg k/kg. Application of K on soils testing less than 0.18 cmol/kg significantly increased the dry matter yields of both Andropogon and stylo tops. Soil K was significantly related to relative yields of Sole Andropogon (r=0.60**), sole stylo (r=0.78***), and Andropogon/stylo mixture (r=0.77***). There was a high correlation between the K concentration in plant tissue and the relative yields of sole Andropogon (r=0.68**), sole stylo (r=0.67**), Andropogon in mixture (r=0.65**), and stylo in mixture (r=0.64**). The graphical model of Gate and Nelson indicated the critical levels of the available form of K in soil to be 0.18, 0.20, and 0.21 cmol/kg for sole Andropogon, sole stylo and Andropogon/stylo mixture, respectively. The critical levels for K in plant tissues were also determined to be 1.30, 2.03, 1.38 and 1.86 percent for sole Andropogon, sole stylo Andropogon in mixture, and stylo in mixture, respectively. |
| format | Journal Article |
| id | CGSpace28424 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1995 |
| publishDateRange | 1995 |
| publishDateSort | 1995 |
| publisher | Informa UK Limited |
| publisherStr | Informa UK Limited |
| record_format | dspace |
| spelling | CGSpace284242024-05-01T08:16:57Z Critical potassium deficiency levels for a grass legume pasture grown on soils of the subhumid zone of Nigeria Tening, A.S. Tarawali, G. Omueti, J.A.I. subhumid zones potassium pastures feed legumes nutrient deficiency yields dry matter content A greenhouse experiment was conducted to determine the critical deficiency levels of potassium (K) in the subhumid zone soils for predicting response of a mixture of Andropogon gayanus and Stylosanthes hamata cVerano to K application. Twenty coarse textured soils, having loamy sand to sandy loam textures and with exchangeable K contents ranging from 0.08 to 0.97 cmol/kg, were used. Two rates of K applied were 0 and 80 mg k/kg. Application of K on soils testing less than 0.18 cmol/kg significantly increased the dry matter yields of both Andropogon and stylo tops. Soil K was significantly related to relative yields of Sole Andropogon (r=0.60**), sole stylo (r=0.78***), and Andropogon/stylo mixture (r=0.77***). There was a high correlation between the K concentration in plant tissue and the relative yields of sole Andropogon (r=0.68**), sole stylo (r=0.67**), Andropogon in mixture (r=0.65**), and stylo in mixture (r=0.64**). The graphical model of Gate and Nelson indicated the critical levels of the available form of K in soil to be 0.18, 0.20, and 0.21 cmol/kg for sole Andropogon, sole stylo and Andropogon/stylo mixture, respectively. The critical levels for K in plant tissues were also determined to be 1.30, 2.03, 1.38 and 1.86 percent for sole Andropogon, sole stylo Andropogon in mixture, and stylo in mixture, respectively. 1995-03 2013-05-06T07:00:35Z 2013-05-06T07:00:35Z Journal Article https://hdl.handle.net/10568/28424 en Limited Access Informa UK Limited Communications in Soil Science and Plant Analysis;26(5&6): 673-685 |
| spellingShingle | subhumid zones potassium pastures feed legumes nutrient deficiency yields dry matter content Tening, A.S. Tarawali, G. Omueti, J.A.I. Critical potassium deficiency levels for a grass legume pasture grown on soils of the subhumid zone of Nigeria |
| title | Critical potassium deficiency levels for a grass legume pasture grown on soils of the subhumid zone of Nigeria |
| title_full | Critical potassium deficiency levels for a grass legume pasture grown on soils of the subhumid zone of Nigeria |
| title_fullStr | Critical potassium deficiency levels for a grass legume pasture grown on soils of the subhumid zone of Nigeria |
| title_full_unstemmed | Critical potassium deficiency levels for a grass legume pasture grown on soils of the subhumid zone of Nigeria |
| title_short | Critical potassium deficiency levels for a grass legume pasture grown on soils of the subhumid zone of Nigeria |
| title_sort | critical potassium deficiency levels for a grass legume pasture grown on soils of the subhumid zone of nigeria |
| topic | subhumid zones potassium pastures feed legumes nutrient deficiency yields dry matter content |
| url | https://hdl.handle.net/10568/28424 |
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