| dc.contributor.author | Osiname, O. |
| dc.contributor.author | Meppe, F. |
| dc.contributor.author | Everett, L. |
| dc.date.accessioned | 2019-12-04T11:30:24Z |
| dc.date.available | 2019-12-04T11:30:24Z |
| dc.date.issued | 2000 |
| dc.identifier.citation | Osiname, O., Meppe, F. & Everett, L. (2000). Response of maize (Zea mays) to phosphorus application on basaltic soils in Northwestern Cameroon. Nutrient Cycling in Agroecosystems, 56(3), 209-217. |
| dc.identifier.uri | https://hdl.handle.net/20.500.12478/5277 |
| dc.description.abstract | A field trial was conducted on two P sorptive, basaltic soils commonly used for maize production in Northwestern Cameroon. The objective was to determine the maintenance P rates required for adequate P supply in the soils for maize after initial capital dressing applications of P (0, 22, 44, 88 and 132 kg ha-1) in 1991. These were followed by three supplementary P rates – 0, 44 and 88 kg ha-1 in 1992. Three crops of maize (cv COCA) were grown to monitor the availability of the residual P. Experimental design was randomized complete block with four replications in 1991 and a split-plot in 1992 and 1993. The soils at the experimental sites were rich in organic P which formed 67% and 57% of total P at Mfonta and Babungo respectively. Laboratory P sorption studies indicated high P requirements by the basaltic soils used in the study. The amounts of P sorbed to attain 0.2 ug g-1 in soil solution were 1200 ug g-1 at Mfonta and 600 ug g-1 at Babungo. In spite of these high P sorption capacities, significant responses to small rates of P application were observed. It was concluded that a sizable proportion of P released from organic P mineralization was used to satisfy P sorption capacity of the soils, resulting in maize response to small rates of fertilizer P application. Residual P effects on maize yield were related to applied P. Bray 1 extractable soil P was weakly related to grain yields (r = 0.136 at Mfonta and r = 0.186 at Babungo). A critical value of 5.5 mg kg-1 Bray 2 extractable P in the soil was established for maize at Mfonta site. About 44 kg P ha-1 was recommended for maize at this site when Bray 2 soil P test was below this critical value. |
| dc.language.iso | en |
| dc.subject | Soil |
| dc.subject | Maize |
| dc.subject | Fertilizers |
| dc.title | Response of maize (Zea mays) to phosphorus application on basaltic soils in Northwestern Cameroon |
| dc.type | Journal Article |
| dc.description.version | Peer Review |
| cg.contributor.affiliation | International Institute of Tropical Agriculture |
| cg.contributor.affiliation | Institute of Agricultural Research |
| cg.coverage.region | Africa |
| cg.coverage.region | West Africa |
| cg.coverage.region | Central Africa |
| cg.coverage.country | Nigeria |
| cg.coverage.country | Cameroon |
| cg.isijournal | ISI Journal |
| cg.authorship.types | CGIAR and developing country institute |
| cg.iitasubject | Maize |
| cg.iitasubject | Food Security |
| cg.iitasubject | Soil Health |
| cg.iitasubject | Soil Fertility |
| cg.accessibilitystatus | Limited Access |
| local.dspaceid | 103634 |
