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Journal Article 1985

Autor: Rodríguez, M.S. Lal, R.

Although tropical wetlands are rapidly being developed for the needed increase in rice (Oryza sativa L.) production, knowledge is still limited concerning the optimum soil and crop management practices. A study was thus carried out to evaluate the effects of different tillage systems on the growt...

Enlace original: https://cgspace.cgiar.org/handle/10568/81493

Investigación en Agricultura
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Rodríguez, M.S. ,  Lal, R. ,  [Growth and yield of paddy rice as affected by tillage and nitrogen levels] ,  Growth and yield of paddy rice as affected by tillage and nitrogen levels
Journal Article 1985

Autor: Ghuman, B.S. Lal, R.

Thermal conductivity increased with increasing soil water content. Clayey soils had lower thermal conductivity than sandy soils at all water levels studied. Thermal conductivity ranged from 0.37 to 1.42 for sandy loam, from 0.37 to 1.90 for loam, from 0.38 to 1.71 for sandy clay loam, and from 0....

Enlace original: https://cgspace.cgiar.org/handle/10568/81492

Investigación en Agricultura
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Ghuman, B.S. ,  Lal, R. ,  [Thermal conductivity, thermal diffusivity, and thermal capacity of some Nigerian soils] ,  Thermal conductivity, thermal diffusivity, and thermal capacity of some Nigerian soils
Journal Article 1981

Autor: Vine, P.N. Lal, R. Payne, D.

We prepared sand and gravelly sand media in rigid cylinders, with different proportions and sizes of gravels and sands at various water tensions. Cores of forest topsoil were used for comparison. We measured the growth of pregerminated maize seedlings 72 hours after transplanting them into these ...

Enlace original: https://cgspace.cgiar.org/handle/10568/81505

Investigación en Agricultura
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Vine, P.N. ,  Lal, R. ,  Payne, D. ,  [The influence of sand and gravels on root growth of maize seedlings] ,  The influence of sand and gravels on root growth of maize seedlings
Conference Paper 1981-06

Autor: Lal, R.

Soil erosion hazard in tropical Africa is a serious threat towards sustained productivity. The available basic research information on soil, climate, and land use is rather sketchy and indicates that the severity of the erosion hazard may be attributed to soil characteristics, low soil loss toler...

Enlace original: https://cgspace.cgiar.org/handle/10568/81171

Investigación en Agricultura
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Lal, R. ,  [Analyses of different processes governing soil erosion by water in the tropics] ,  Analyses of different processes governing soil erosion by water in the tropics
Journal Article 1978

Autor: Lal, R.

Measurements were made of physical characteristics of 119 samples from 23 profiles derived from two parent materials in Nigeria. The laboratory analyses included texture, plasticity and shrinkage characteristics, and a range of soil moisture constants including saturation point and moisture reten...

Enlace original: https://cgspace.cgiar.org/handle/10568/81259

Investigación en Agricultura
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Lal, R. ,  [Physical properties and moisture retention characteristics of some Nigerian soils] ,  Physical properties and moisture retention characteristics of some Nigerian soils
Journal Article 1981-08

Autor: Vleeschauwer, D. de Lal, R.

We compared the physical and chemical properties of worm casts with the properties of the surface 0 to 10 centimeters of six soils along a toposequence developed on basement complex rocks in southwestern Nigeria. Casts contained less sand and more silt and clay than the surface soil. Bulk density...

Enlace original: https://cgspace.cgiar.org/handle/10568/81260

Investigación en Agricultura
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Vleeschauwer, D. de ,  Lal, R. ,  [Properties of worm casts under secondary tropical forest regrowth] ,  Properties of worm casts under secondary tropical forest regrowth
Journal Article 1995

Autor: Salako, F.K. Lal, R. Swift, M.J.

Yields of intercropped oil palm (Elaeis guineensis) and cocoyam (Xanthosoma sagittifolium) were assessed at Okomu (6°25'N, 5°12'E), near Benin City, southern Nigeria. Yields were assessed during the fifth and sixth year after the establishment of oil palm. The annual yield of fresh fruit bunches ...

Enlace original: https://cgspace.cgiar.org/handle/10568/101062

Investigación en Agricultura
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Salako, F.K. ,  Lal, R. ,  Swift, M.J. ,  [Intercropping oil palm (Elaeis guneensis) with cocoyam (Xanthosoma sagittifolium) on windows and nonwindows in southern Nigeria] ,  Intercropping oil palm (Elaeis guneensis) with cocoyam (Xanthosoma sagittifolium) on windows and nonwindows in southern Nigeria
Journal Article 1991

Autor: Salako, F.K. Obi, M.E. Lal, R.

Soil erosion, measured in field runoff plots, was correlated with several rainfall erosivity indices. Erosion was measured on field plots established on a Typic Paleudult in southeastern Nigeria. Several erosivity indices were computed from a daily recording rain gauge sited in vicinity of the ru...

Enlace original: https://cgspace.cgiar.org/handle/10568/101709

Investigación en Agricultura
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Salako, F.K. ,  Obi, M.E. ,  Lal, R. ,  [Comparative assessment of several rainfall erosivity indices in southern Nigeria: short communication] ,  Comparative assessment of several rainfall erosivity indices in southern Nigeria: short communication
Journal Article 1990

Autor: Hulugalle, N.R. Lal, R. Gichuru, M.

The effect of no-tillage and mulch on soil properties and tuber yield of cassava was studied over a five year period on an infertile, acid Ultisol in south-eastern Nigeria. Mulch was applied at a rate of 12 t ha−1 as a split application once at planting and once six months after planting. No chem...

Enlace original: https://cgspace.cgiar.org/handle/10568/101842

Investigación en Agricultura
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Hulugalle, N.R. ,  Lal, R. ,  Gichuru, M. ,  [Effect of five years of notillage and mulch on soil properties and tuber yield of cassava on an acid Ultisol in southeastern Nigeria] ,  Effect of five years of notillage and mulch on soil properties and tuber yield of cassava on an acid Ultisol in southeastern Nigeria
Journal Article 1990

Autor: Ghuman, B.S. Lal, R.
Enlace original: https://cgspace.cgiar.org/handle/10568/101855

Investigación en Agricultura
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Ghuman, B.S. ,  Lal, R. ,  [Nutrient addition into soil by leaves of Cassia siemea and Gliricidia sepium growth on an alfisol in southern Nigeria] ,  Nutrient addition into soil by leaves of Cassia siemea and Gliricidia sepium growth on an alfisol in southern Nigeria

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