Growth and yield of maize alley cropped with
Leucaena leucocephala
and
Faidherbia albida
in Morogoro, Tanzania |
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| Authors: | S A O Chamshama A G Mugasha A Kløvstad O Haveraaen S M S Maliondo |
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| Institution: | 1. Department of Forest Biology, Faculty of Forestry, Sokoine University of Agriculture, P.O. Box 3010, Morogoro, Tanzania
2. Department of Forest Sciences, Agricultural University of Norway, P.O. Box 5044, N-1432, ?s, Norway
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| Abstract: | This study examined the effect of alley cropping of Leucaena leucocephala and Faidherbia albida on wood biomass, maize grain
yield and soil nitrogen status. The treatments were: trees planted alone at 1 × 5 m spacing; trees intercropped with maize
and a sole maize crop. Mulch biomass averaged 6.18 and 0.97 t ha−1 for L. leucocephala and F. albida, respectively. Corresponding wood production was 1.71 and 1.11 t ha−1. Both total N and inorganic N (NO
3
−
–N plus
4
+
–N) were higher under F. albida and lowest under L. leucocephala. Similarly, foliar N concentration in maize was higher in
plots intercropped with F. albida and least in L. leucocephala intercropping. Maize grain yield was little affected by the
tree intercrop as competition for resources was reduced through periodic pruning and clean weeding. There was no gain in maize
grain yield due to the presence of L. leucocephala and F. albida. These results suggest that alley cropping in Gario is justified
for wood production but not for increasing maize grain yield.
This revised version was published online in June 2006 with corrections to the Cover Date. |
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| Keywords: | foliar nitrogen concentration mulch biomass soil nitrogen status wood biomass |
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