Aihou, K. and Sanginga, N. and Vanlauwe, B. and et al, . (2008) Restoration of “terre de barre” fertility using pigeonpea grown in Rotation or intercropping with maize in the derived savanna of benin. Bulletin of Agricultural Research Benin (60). pp. 19-32.
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Abstract
The following nine main cropping systems were evaluated: maize/maize in rotation without N-fertilizer (control); maize/cowpea in rotation where maize received N-fertilizer; maize/pigeonpea intercropping without N-fertilizer; maize/cowpea/pigeonpea in rotation where maize received N-fertilizer; maize/maize in rotation with N-fertilizer; maize/pigeonpea fallow in rotation where maize received N-fertilizer; maize/pigeonpea intercropping where maize received N-fertilizer; pigeonpea/maize/cowpea in rotation where maize received N-fertilizer; pigeonpea/maize/maize where maize received N-fertilizer. The rate of N-fertilizer applied was 74 kg N as urea (28 kg N/ha 2 weeks after planting maize and 46 kg N/ha 6 weeks after planting maize). Compared to the control, the increase in maize grain yield ranged from –1.55 to 215 % for all cropping systems receiving N-fertilizer and intercropping without N-fertilizer, maize grain yield in intercropping without N-fertilizer increased by 9 % in first year and decreased by 1.55 % in second year compared to the control. The maize stover yield with N-fertilizer application increased by -24 up to 203 %. Pigeonpea grain yield (in intercropping) without N-fertilizer was 56 % higher than with N-fertilizer. Pigeonpea as fallow produced 73-97 % more fresh wood than intercropped pigeonpea without fertilization and 91-118 % more fresh wood than intercropped pigeonpea with N-fertilizer. The intercropped Cajanus cajan with N-fertilizer produced 11 % less fresh wood than intercropped without N-fertilizer. The total N amount in the maize grain yield increased by 5-245 % for the first season of year 1 compared to the control and increased by 241-260 % for the second season of year 1 compared to the control. The total N amount in the maize grain of the intercropped pigeonpea/maize with N-fertilizer was 190 % higher than the intercropped pigeonpea/maize without N-fertilizer. The total amount of P follows the same trend as Nfertilizer in intercropped systems. The yield efficiency was low in year 1 compared to year 2.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | N-fertilization, P, yield efficiency, LER, Benin. |
| Author Affiliation: | INRAB Cotonou, Bénin,CIAT Nairobi, Kenya,(IITA)Ibadan, Nigeria, Laboratory of Soil Fertility and Soil Biology, Heverlee, Belgium Laboratory of Physical Chemistry, Gent, Belgium, |
| Subjects: | Plant Protection |
| Divisions: | Pigeonpea |
| Depositing User: | Mr. SanatKumar Behera |
| Date Deposited: | 20 Mar 2012 03:57 |
| Last Modified: | 20 Mar 2012 03:57 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/3989 |
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