Article abstract

Journal of Agricultural and Crop Research

Research Article | Published January 2021 | Volume 9, Issue 1. pp. 17-26.

doi: https://doi.org/10.33495/jacr_v9i1.20.175

 

Effect of Continuous Intensive Cultivation on the Chemical and Microbiological Properties of Oxic Dystrandept Soils in the Western Highlands of Cameroon

 



 

 

NTANGMO TSAFACK Honorine1*

YEMEFACK Martin2

TEMGOUA Emile3

AZINWI TAMFUH Primus3

NJOMGANG Rosaline4

TCHUMTCHOU Armel Landry5

NJINE Thomas5

 

Email Author

 

1. Research Unit of Applied Biology and Ecology, Department of Animal Biology, Faculty of Sciences, University of Dschang, PO Box 67 Dschang, Cameroon P.O. Box 365 Dschang, Cameroon.

2. International Institute of Tropical Agriculture (IITA-Cameroon), P.O. Box 2018 Yaoundé, Cameroon.

3. Research Unit of Soil Analysis and Environment Chemistry, Department of Soil Sciences, Faculty of Agronomy and Agricultural Sciences, University of Dschang, PO Box 222 Dschang, Cameroon.

4. Laboratory of the Soil, Plants, Manure and Water, Institute of Agronomic Research for Development, Institute of Agricultural Research for Development, PO box 2123, Yaoundé, Cameroon.
5. Laboratory of General Biology, Department of Animal Biology and Physiology, Faculty of Sciences, University of Yaoundé I, PO Box 812 Yaoundé, Cameroon.


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Citation: Honorine NT, Martin Y, Emile T, Primus AT, Rosaline N, Landry TA, Thomas N (2021). Effect of Continuous Intensive Cultivation on the Chemical and Microbiological Properties of Oxic Dystrandept Soils in the Western Highlands of Cameroon. J. Agric. Crop Res. 9(1):17-26. doi: 10.33495/jacr_v9i1.20.175.

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 Abstract 


Soil fertility indices are well documented as they are directly related to land use and productivity. However, the effect of continuous intensive cultivation on the evolution of soil fertility is still poorly documented. The aim of this study was thus to assess the effect of continuous intensive cultivation on the chemical and microbiological properties of Oxic Dystrandept soils in the Western Highlands of Cameroon. Composite soil samples were taken between 0-15 cm depths on farmlands that have been subjected to continuous intensive cultivation for one, five and ten years meanwhile samples from plots that have never been cultivated served as control. The main results revealed that the ammonium contents dropped abruptly (86%-wt) from the first year of cultivation. The organic carbon (OC) content decreased from 1.81 ± 0.14 %-dm (in control) to 1.69 ± 0.09 % after one year, 1.66 ± 0.10 % after 5 years and 1.58 ± 0.07 % after 10 years. Compared to the control, available phosphorus (P) showed a 13 %-wt drop after one year, 46 % after 5 years and 85 % after 10 years. Dehydrogenase activity showed a 42 % decrease after one year, 50 % after five years and 73 % after 10 years. The other parameters were not significantly different (P<0.05) amongst treatments. Decline of soil productivity was undoubtedly related to the decrease of OC, P, microbial activity and ammonium with continuous intensive cultivation. Thus, management strategies for improved crop production should include selection suitable cropping systems and chemical methods.

Keywords  Continuous intensive cultivation   enzymatic activities   soil chemical properties   Oxic Dystrandept  

 Cameroon western highland 

 

 

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This article is published under the terms of the Creative Commons Attribution License 4.0

 

 

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