| dc.contributor.author | Kwari, J.D. |
| dc.contributor.author | Kamara, A.Y. |
| dc.contributor.author | Ekeleme, F. |
| dc.contributor.author | Omoigui, L.O. |
| dc.date.accessioned | 2019-12-04T11:14:05Z |
| dc.date.available | 2019-12-04T11:14:05Z |
| dc.date.issued | 2009 |
| dc.identifier.citation | Kwari, J.D., Kamara, A.Y., Ekeleme, F. & Omoigui, L.O. (2009). Relation of yields of soybean and maize to sulphur, zinc, and copper status of soils under intensifying cropping systems in the tropical savannas of north-east Nigeria. Journal of Food, Agriculture & Environment, 7(1), 129-133. |
| dc.identifier.issn | 1459-0255 |
| dc.identifier.uri | https://hdl.handle.net/20.500.12478/2642 |
| dc.description.abstract | Deficiencies of sulphur (S), copper (Cu) and zinc (Zn) are becoming prevalent under intensifying agricultural systems in north-eastern Nigeria. They are manifest in the partial or lack of response by crops to NPK fertilizers leading to a reduction in crop quality and yields. Data were collected on the initial available S, Cu and Zn contents of some samples from 0-15 cm depth from farmers’ compound fields (64) and bush fields (73) in 30 communities across three agro-ecological zones in north-east Nigeria. These were related to the grain yields of soybean and maize varieties from demonstration trials to assess if they are yield determinants of these crops. Available S content (range 5.10-18.49 mg kg-1) was moderate to medium status in over 80% of the fields within the region. This content significantly influenced yields of soybean (P = 0.0245) and maize (P = 0.0415) in bush fields in the Southern Guinea savanna (SGS) and maize (P = 0.0074) in compound fields in Sudan savanna (SS), thus indicating S was a determinant of the performance of these crops. Nearly all fields were deficient in Zn with a range of 0.002-1.47 mg kg-1. This had a significant effect on maize yields in compound fields (P = 0.0376) in SGS and in bush fields (P = 0.0090) in SS. Also available Cu content was deficient (range 0.001-0.274 mg kg-1) in over 83% of the soils and had a significant effect on soybean yields in compound fields (P = 0.0455) in SGS. The soils in north-east Nigeria were moderate in S but deficient in Cu and Zn and may require the application of NPK fertilizer containing these micronutrients for the cultivation of maize and soybean. |
| dc.description.sponsorship | Canadian International Development Agency |
| dc.format.extent | 129-133 |
| dc.language.iso | en |
| dc.subject | Copper |
| dc.subject | Micronutrients |
| dc.subject | Sulphur |
| dc.subject | Zinc |
| dc.subject | Npk Fertilizer |
| dc.subject | Organic Matter |
| dc.subject | Mineralization |
| dc.subject | Organic Carbon |
| dc.subject | Spectrophotometer |
| dc.subject | Soil Fertility |
| dc.title | Relation of yields of soybean and maize to sulphur, zinc and copper status of soils under intensifying cropping systems in the tropical savannas of northeast Nigeria |
| dc.type | Journal Article |
| dc.description.version | Peer Review |
| cg.contributor.affiliation | University of Maiduguri |
| cg.contributor.affiliation | International Institute of Tropical Agriculture |
| cg.coverage.region | Africa |
| cg.coverage.region | West Africa |
| cg.coverage.country | Nigeria |
| cg.authorship.types | CGIAR and developing country institute |
| cg.iitasubject | Soybean |
| cg.iitasubject | Soil Fertility |
| cg.iitasubject | Soil Information |
| cg.iitasubject | Plant Production |
| cg.iitasubject | Plant Breeding |
| cg.iitasubject | Maize |
| cg.iitasubject | Integrated Soil Fertility Management |
| cg.iitasubject | Cowpea |
| cg.iitasubject | Cowpea |
| cg.iitasubject | Food Security |
| cg.journal | Journal of Food, Agriculture & Environment |
| cg.howpublished | Formally Published |
| cg.accessibilitystatus | Limited Access |
| local.dspaceid | 93447 |
| cg.targetaudience | Scientists |
