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Grain and Forage Yield and Stover Quality of Sorghum and Millet in Low Rainfall Environments†

Published online by Cambridge University Press:  03 October 2008

J. B. Youngquist ,
D. C. Carter  and
M. D. Clegg
J. B. Youngquist
Affiliation:
INTSORMIL Botswana, PO 2427, Gaborone, Botswana
D. C. Carter
Affiliation:
INTSORMIL Botswana, PO 2427, Gaborone, Botswana
M. D. Clegg
Affiliation:
INTSORMIL Botswana, PO 2427, Gaborone, Botswana
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Summary

The potential for using sorghum and millet crop residues as fodder was studied in southeastern Botswana. This region is characterized by low, unevenly distributed rainfall and shallow sandy soils. There were significant differences among cultivars for grain and stover yield, digestibility, crude protein, and mineral content, but no species advantage. Stover from all entries was adequate for cattle maintenance in in vitro dry matter digestibility (IVDMD) and most of the minerals tested, but crude protein and phosphorus levels did not always meet the minimum requirement. The deficient phosphorus levels were compounded by high calcium levels. This mineral imbalance could lead to bone abnormalities and reduced fertility in livestock.

Type
Research Article
Information
Experimental Agriculture , Volume 26 , Issue 3 , July 1990 , pp. 279 - 286
Copyright
Copyright © Cambridge University Press 1990

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