Soil erosion on Alfisols in western Nigeria. I. Effects of slope, crop rotation and residue management
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Published source details
Lal R. (1976) Soil erosion on Alfisols in western Nigeria. I. Effects of slope, crop rotation and residue management. Geoderma, 16, 363-375.
Published source details Lal R. (1976) Soil erosion on Alfisols in western Nigeria. I. Effects of slope, crop rotation and residue management. Geoderma, 16, 363-375.
Actions
This study is summarised as evidence for the following.
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Change tillage practices Action Link |
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Add mulch to crops Action Link |
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Change tillage practices
A replicated experiment in 1970-1974 on sandy-clay to clay soil in Nigeria (Lal, 1976) found lower runoff under no-till maize Zea mays-cowpea Vigna unguiculata treatments (2% of total annual rainfall) compared to conventionally ploughed bare fallow (36%). Soil loss was lower under no-till (0.1 t/ha) compared to conventionally ploughed continuous maize (41 t/ha), cowpea-maize (43 t/ha) and bare fallow (230 t/ha) treatments. Slopes of 1, 5, 10 and 15% received the following treatments: bare fallow (conventionally ploughed); continuous maize (conventionally ploughed, mulched); continuous maize (conventionally ploughed, no mulch); maize-cowpea rotation (zero-tillage); and cowpeas-maize rotation (conventionally ploughed). Plots were 25 x 4 m and were replicated five times on each slope. Soil and runoff water was collected from each plot after every rainstorm using a water collection system below ground level downslope of the plots.
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Add mulch to crops
A replicated experiment in 1970-1974 on sandy-clay to clay soil in Nigeria (Lal, 1976) found that mulched continuous maize Zea mays after ploughing had the lowest soil loss (0 t/ha) compared to continuous maize without mulch (41 t/ha) and bare fallow plots (230 t/ha). Runoff was also lower in the mulched treatment (2% of total annual rainfall) compared to bare fallow (36%). Slopes of 1, 5, 10 and 15% received the following treatments: bare fallow (conventionally ploughed); continuous maize (conventionally ploughed, mulched); continuous maize (conventionally ploughed, no mulch); maize-cowpea Vigna unguiculata rotation (zero-tillage); and cowpeas-maize rotation (conventionally ploughed). Plots were 25 x 4 m and were replicated five times on each slope. Soil and runoff water was collected from each plot after every rainstorm using a water collection system below ground level downslope of the plots.
