Sulphur Availability in Kenyan Soils

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Date
1993
Authors
Esilaba A.O.
Ssali H.
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Abstract
The availability of S to plants in some Kenyan soils was determined using the Janssen double-pot technique. The yield and S uptake results indicated that there was a response to additional S and that the magnitude of response depended on the initial soil S content. The sufficiency quotient, percentage dry matter yield, calculated sulphate S uptake and the apparent S uptake appear to be good estimates of S available to plants. These yield and uptake parameters showed good correlation with sulphate-So the results of the greenhouse study using sorghum confirm that some soils in Kenya are S-deficient. However, further investigations on response surfaces using other crops should be conducted.
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East African Agricultural And Forestry Journal, 59 (No. 2), p. 85-96