Hostname: page-component-586b7cd67f-tf8b9 Total loading time: 0 Render date: 2024-11-24T23:20:54.311Z Has data issue: false hasContentIssue false
  • English
  • Français

Cotton spacing experiments in Uganda

Published online by Cambridge University Press:  27 March 2009

A. B. Hearn
A. B. Hearn
Affiliation:
Cotton Research Corporation, Cotton Research Station, Namulonge, P.O. Box7084, Kampala, Uganda*
Get access Rights & Permissions [Opens in a new window]

Summary

Recently developed mathematical models have been used to study the effects of plant population density and arrangement on the yield of cotton in central Uganda. Optimum density did not vary with variety, but was less with bollworm infestation, infertile soils and drought. A reasonable compromise between a population density suitable for adverse conditions and one suitable for good conditions is 7·4 plants m−2. This population is best achieved with 0·45 × 0·25 m spacing but if such rows are too close to manage then 0·2 m in rows 0·7–0·9 m apart is recommended. The mathematical models used in the study are discussed and appraised.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 78 , Issue 1 , February 1972 , pp. 13 - 25
Copyright
Copyright © Cambridge University Press 1972

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Anon (1968). In Prog. Rep. Exp. Stas, Cott. Res. Corp. Uganda 1967–68, p. 77.Google Scholar
Arnold, M. H. (1970). In Agriculture in Uganda, ed. Tothill, J. D.. Oxford University Press.Google Scholar
Arnold, M. H., Costelloe, B. E., Church, J. M. F. (1968). BPA and SATU, Uganda's two new cotton varieties. Cott. Grow. Rev. 45, 162–74.Google Scholar
Berry, G. (1967). A mathematical model relating plant yield with arrangement for regularly spaced crops. Biometrics 23, 505–15.CrossRefGoogle ScholarPubMed
Bleasdale, J. K. A. (1967 a). Systematic designs for spacing experiments. Expl. Agric. 3, 73–85.CrossRefGoogle Scholar
Bleasdale, J. K. A. (1967 b). The relationship between the weight of a plant part and total weight as affected by plant density. J. Hort. Sci. 42, 51–8.CrossRefGoogle Scholar
Bleasdale, J. K. A. & Nelder, J. A. (1960). Plant population and yield. Nature, Lond. 188, 342.CrossRefGoogle Scholar
Brown, H. B. (1938). Cotton, 2nd ed.New York: McGraw-Hill.Google Scholar
Brown, H. B. (1958). Cotton, 3rd ed.New York: McGraw-Hill.Google Scholar
Christidis, B. G. & Harrison, G. J. (1955). Cotton Growing Problems. New York: McGraw-Hill.Google Scholar
Dale, J. E. (1959). Some effects of the continuous removal of floral buds on the growth of the cotton plant. Ann. Bot. N.S. 23, 636–49.CrossRefGoogle Scholar
Dale, J. E. (1962). Fruit shedding and yield in cotton. Cott. Gr. Rev. 39, 170–6.Google Scholar
Donald, C. M. (1963). Competition among crop and pasture plants. Adv. Agron. 15, 1–118.CrossRefGoogle Scholar
Hearn, A. B. (1968 a). In Prog. Rep. Exp. Stas, Cott. Res. Corp. Uganda 1966–67, pp. 32–5.Google Scholar
Hearn, A. B. (1968 b). In Prog. Rep. Exp. Stas, Cott. Res. Corp. Uganda 1967–68, pp. 35–42.Google Scholar
Hearn, A. B. (1969). In Prog. Rep. Exp. Stas, Cott. Res. Corp. Uganda 1968–69, pp. 39–46.Google Scholar
Hearn, A. B. (1970). In Prog. Rep. Exp. Stas, Cott. Res. Corp. Uganda 1969–70, pp. 36–40.Google Scholar
Hearn, A. B. (1972). Growth and performance of cotton in a tropical upland environment. (In preparation.)Google Scholar
Holliday, R. (1960). Plant population and crop yield. Nature, Lond. 186, 22–4.CrossRefGoogle Scholar
Ingram, W. R. (1965). A survey of cotton grown in Uganda in 1963. Cott. Gr. Rev. 42, 1–14.Google Scholar
Jones, E. (1968). In Prog. Rep. Exp. Stas, Cott. Res. Corp. Uganda 1966–67, pp. 40–6.Google Scholar
Lamb, P. H. (1911). Ann. Rep. Dept. Agric. Uganda Protectorate.Google Scholar
Low, A. (1962). Prog. Rep. Expt. Stas, Cott. Res. Corp. 1961–62 et seq.Google Scholar
Rijks, D. A. (1967). Optimum sowing data for yield: a review of work in the BP 52 cotton area of Uganda. Cott. Gr. Rev. 44, 247–52.Google Scholar
Walton, P. D. (1962). Cotton agronomy trials in Northern and Eastern Provinces of Uganda, 1956–1961. Cott. Gr. Rev. 39, 114–24.Google Scholar
Willey, R. W. & Heath, S. B. (1969). The quantitative relationship between plant population and crop yield. Advan. Agron. 21, 281–321.CrossRefGoogle Scholar