ORGANIC-MATTER AND NUTRIENT STATUS OF SOILS UNDER CULTIVATED FALLOWS - AN EXAMPLE OF GLIRICIDIA-SEPIUM FALLOWS FROM SOUTH WESTERN NIGERIA

被引：18

作者：

ADEJUWON, JO

ADESINA, FA

机构：

[1] Department of Geography, Obafemi Awolowo University, Ile-Ife

来源：

AGROFORESTRY SYSTEMS | 1990年 / 10卷 / 01期

关键词：

Cultivated fallows; Gliricidia sepium; Nigeria; nutrient immobilization; organic matter; tropics;

D O I：

10.1007/BF00118724

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

This paper examines the dynamics of organic matter and nutrients under planted fallows of Gliricidia sepium in South Western Nigeria, as an investigation into the behaviour of soils under such fallows. Data on soil characteristics were collected from thirty fallow fields ranging in age from one to eight years. The data sets were described using the descriptive statistics. Furthermore, the relationships between the soil properties and the age of fallow were evaluated with simple bivariate correlation analysis. Compared with published data and trends in natural fallow, the study shows that the progress of the planted fallow leads to greater organic matter build-up and increase in nitrate-nitrogen and potassium concentration in the soil. It also shows that the biomass retain greater amount of nutrients during the fallow. © 1990 Kluwer Academic Publishers.

引用

页码：23 / 32

页数：10

共 21 条

[1]

Adejuwon J.O., Ekanade O., Edaphic component of the environmental degradation resulting from the replacement of tropical rainforest by field and tree crops in SW Nigeria, International Tree Crops Journal, 4, pp. 269-282, (1987)

[2]

Adesina F.A., Developing suitable agroforestry systems in the tropics: an example of local agroforestry techniques from South Western Nigeria, (1988)

[3]

Areola O., Soil variability within land facets in areas of low, smooth relief

[4]

a case study of the Gwagwa, Plains, Nigerial Soil Survey and Land Evaluation, 2, pp. 9-13, (1982)

[5]

Areola O., Aweto O.A., Gbadegesin A.S., Organic matter and soil fertility restoration in forest and savanna fallows in South Western Nigeria, Geojournal, 6, pp. 183-192, (1982)

[6]

Aweto O.A., Cation dynamics under natural bush fallow in a part of South West Nigerial, Geoforum, 17, pp. 85-92, (1985)

[7]

Benneh G., Systems of Agriculture in tropical Africa, Economic Geography, 48, pp. 224-57, (1972)

[8]

Bouyoucos G.J., Estimation of the colloidal material in soils, Soil Science, 16, (1926)

[9]

Bray R.H., Kurtz L.T., Determination of total organic and available forum of phosphorus in soils, Soil Science, 59, pp. 39-46, (1945)

[10]

Chardokar P.A., Gliricidia maculata: a promising legume fodder, World Animal Review, 44, pp. 36-43, (1982)

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