| dc.creator |
Kimaro, A.A. |
|
| dc.creator |
Timmer, V.R. |
|
| dc.creator |
Chamshama, S.A.O. |
|
| dc.creator |
Mugasha, A.G. |
|
| dc.creator |
Kimaro, D.A. |
|
| dc.date |
2022-09-12T04:59:09Z |
|
| dc.date |
2022-09-12T04:59:09Z |
|
| dc.date |
2008 |
|
| dc.date.accessioned |
2022-10-25T08:51:14Z |
|
| dc.date.available |
2022-10-25T08:51:14Z |
|
| dc.identifier |
http://www.suaire.sua.ac.tz/handle/123456789/4541 |
|
| dc.identifier.uri |
http://hdl.handle.net/123456789/91160 |
|
| dc.description |
Journal article |
|
| dc.description |
Agroforestry tree species producing high quality litter may enhance post-fallow soil nutrient availability and crop yields through
mineralization of soil organic matter and green manure. A split-plot field experiment was used to evaluate maize yield and soil N and P status
after fallowing indigenous and exotic tree species of contrasting litter quality. Responses were compared with recommended inorganic
fertilizer use. The objective was to assess efficacy of 5-year tree fallows in improving soil productivity to screen species for increased crop
yield under rotational woodlot culture, an agroforestry system mainly used for on-farm fuelwood production in semi-arid Tanzania. Post-
fallow maize yield and soil nutrients differed significantly among tree fallows. Low C:N and L:N ratios enhanced nutrient release from slash.
Acacia polyacantha (indigenous) and Gliricidia sepium fallows doubled maize yield compared to the natural fallow probably due to high soil
N and P levels resulting from net release by high quality foliage. First season maize yield was similar to that from combined N and P fertilizers
indicating high capacity of the fallows to improve crop yields and reduce fertilizer inputs usually unaffordable to small-scale farmers.
Comparatively low maize yield and soil N and P levels after exotic Acacia crassicarpa and Acacia mangium fallows were attributed to net N
immobilization by poor quality litter during growing seasons. This study suggests that rotational woodlot systems utilizing tree species with
high litter quality can improve both post-fallow maize yield and soil fertility as well as produce sufficient fuelwood. In this aspect, A.
polyacantha would be the most appropriate species. |
|
| dc.format |
application/pdf |
|
| dc.language |
en |
|
| dc.publisher |
elservier |
|
| dc.subject |
Acacia |
|
| dc.subject |
Litter quality |
|
| dc.subject |
Maize yield |
|
| dc.subject |
Semi-arid |
|
| dc.subject |
Semi-arid |
|
| dc.subject |
Woodlot |
|
| dc.title |
Differential response to tree fallows in rotational woodlot systems In semi-arid Tanzania: post-fallow maize yield, nutrient uptake, And soil nutrients |
|
| dc.type |
Article |
|