Critical potassium deficiency levels for a grass legume pasture grown on soils of the subhumid zone of Nigeria
| dc.creator | Tening, A.S. | |
| dc.creator | Tarawali, G. | |
| dc.creator | Omueti, J.A.I. | |
| dc.date | 1995-03 | |
| dc.date | 2013-05-06T07:00:35Z | |
| dc.date | 2013-05-06T07:00:35Z | |
| dc.date.accessioned | 2026-06-27T16:46:46Z | |
| dc.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. | |
| dc.identifier | https://hdl.handle.net/10568/28424 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/132896 | |
| dc.language | en | |
| dc.publisher | Informa UK Limited | |
| dc.rights | Limited Access | |
| dc.source | Communications in Soil Science and Plant Analysis;26(5&6): 673-685 | |
| dc.subject | subhumid zones | |
| dc.subject | potassium | |
| dc.subject | pastures | |
| dc.subject | feed legumes | |
| dc.subject | nutrient deficiency | |
| dc.subject | yields | |
| dc.subject | dry matter content | |
| dc.title | Critical potassium deficiency levels for a grass legume pasture grown on soils of the subhumid zone of Nigeria | |
| dc.type | Journal Article |