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Management of phosphate rock in maize-cowpea cropping system

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dc.contributor.author Issaka, R. N.
dc.contributor.author Dennis, E. A.
dc.contributor.author Buri, M. M.
dc.date.accessioned 2022-06-23T13:24:24Z
dc.date.available 2022-06-23T13:24:24Z
dc.date.issued 2011
dc.identifier.citation Issaka, R. N., Dennis, E. A., & Buri, M. M. (2003). Management of phosphate rock in maize-cowpea cropping system. Soil science and plant nutrition, 49(4), 481-484. en_US
dc.identifier.issn 0038-0768
dc.identifier.issn 1747-0765
dc.identifier.uri https://doi.org/10.1080/00380768.2003.10410036
dc.identifier.uri http://hdl.handle.net/123456789/2377
dc.description.abstract In the forest zone P is one of the major yield-limiting nutrients in most of the well drained soils. In this study, attempts were made to improve the phosphorus and calcium status of the soil for maize production through the use of ground Togo phosphate rock (TPR). Since TPR is unreactive, it is therefore necessary to allow for a time lag between time of application and nutrient availability. The possibility that legumes may enhance the dissolution of TPR was also considered. The experiment was started in the minor season of 1998. Initial soil properties showed that the soil was acidic with a very low content of available phosphorus. The experimental design was a split plot. Surface broadcast and broadcast incorporation were the main plot treatments. Four rates of TPR viz. 400, 600, 800, and 1,200 kg ha-1 and two checks (Control and 200 kg ha-1 SSP) constituted the subplot treatments. All the treatments (only in the major season) received 30 kg N ha-1 and 30 kg K20 ha-1 at planting and a second dose of 20 kg N ha-1 six weeks after planting. SSP was applied directly to maize in the major season, while TPR was applied only to cowpea in the minor season. For the three year running, cowpea grain yield was similar for all the subplot treatments. Incorporation gave a significantly higher cowpea grain yield only in the first year. While maize grain yield was similar for all the treatments in the first year, SSP (4.47 t ha-1), 800 kg TPR ha-1 (4.59 t ha-1), and 1,200 kg (4.35 t ha-1 ) gave a significantly higher yield than the control (3.19 t ha-1 ) in the second year. Significant improvement of soil properties such as available P and exchangeable calcium by the TPR 800 and 1,200 kg ha-1 treatments suggests that these treatments can support a higher maize yield if rates of Nand K are increased. en_US
dc.language.iso en en_US
dc.publisher Taylor & Francis en_US
dc.relation.ispartofseries Soil Science and Plant Nutrition;49,4
dc.subject Dissolution en_US
dc.subject Farming system en_US
dc.subject Maize-cowpea en_US
dc.subject Phosphate rock en_US
dc.subject Soil fertility en_US
dc.title Management of phosphate rock in maize-cowpea cropping system en_US
dc.type Article en_US


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