Potassium Supplying Capacity of Representative Soils of South Western Nigeria as Measured by Intensity, Quantity and Capacity Factors.

M. T., Adetunji and J. A., Adepetu (1993) Potassium Supplying Capacity of Representative Soils of South Western Nigeria as Measured by Intensity, Quantity and Capacity Factors. Pertanika Journal of Tropical Agricultural Science, 16 (1). pp. 71-74. ISSN 0126-6128

[img] PDF
2216Kb

Abstract

Laboratory and greenhouse studies were undertaken to determine the usefulness of K Quantity, Intensity and Capacity factors in evaluating K supply capacities and in predicting K uptake by maize in 14 representative soils of South Western Nigeria. The results showed that the activity ratio was a poor index of the available K and was incapable of correct prediction of K uptake during prolonged cropping. The potential Buffer Capacity was higher in the soils on basement complex than in soils derived from sedimentary origin, indicating that depletion of K on cropping will be faster in soils derived from sedimentary rocks than those on the basement complex. The results also showed that the 'fixed K' Quantity factor and the Potential Buffer Capacity could provide useful information in characterising the differential Buffer behaviour of soils.

Item Type:Article
Publisher:Universiti Putra Malaysia Press
ID Code:3164
Deposited By: Nasirah Abu Samah
Deposited On:24 Nov 2009 04:07
Last Modified:27 May 2013 07:06

Repository Staff Only: Edit item detail


Universiti Putra Malaysia Institutional Repository

Universiti Putra Malaysia Institutional Repository is an on-line digital archive that serves as a central collection and storage of scientific information and research at the Universiti Putra Malaysia.

Currently, the collections deposited in the IR consists of Master and PhD theses, Master and PhD Project Report, Journal Articles, Journal Bulletins, Conference Papers, UPM News, Newspaper Cuttings, Patents and Inaugural Lectures.

As the policy of the university does not permit users to view thesis in full text, access is only given to the first 24 pages only.