Verwysings
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- Baker , D. N. , Hesketh , J. D. and Duncan , W. G. 1972 . Simulation of growth and yield in cotton. I. Gross photosyntheses, respiration and growth . Crop Science , 12 : 431 – 435 .
- Berger , J. 1969 . The world's major fibre crops; their cultivation and manuring. Centre D'Etude de L'Azote. Conzett & Huker, Zurich, Switzerland.
- Bilbro , J. D. 1975 . Relationship of air temperatures first-bloom dates of cotton. Texas Agric. Exp. Sta. Bull. MP-1186.
- Dippenaar , M. C. 1966 . Ontkieming van katoen (Gossypium hirsutum L.). M.Sc.-verhandeling, Universiteit Pretoria
- Ehlers , J. H. and Van Heerden , H. G. 1976 . Agroklimatologiese behoeftes: Gebiede waar katoen verbou kan word. Katoenreeks C.3. Boerdery in Suid-Afrika. Die Staatsdrukker, Pretoria.
- Fry , K. E. 1983 . Heat-unit calculations in cotton crop and insect models. U.S.D.A. Agric. Res. Ser. Advances in Agricultural technology. AAT-W-23.
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- Hesketh , J. D. , Baker , D. N. and Duncan , W. G. 1972 . Simulation of growth and yield in cotton: II. Environmental control of morphogenesis . Crop Science , 12 : 436 – 439 .
- Hesketh , J. D. and Low , A. 1968 . Effect of temperature on components of yield and fibre quality of cotton varieties of diverse origin . Cotton Gr. Rev. , 45 : 243 – 246 .
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- Human , N. B. 1986 . Delimitation of areas climatically suitable for six irrigation subtropical crops in the eastern Transvaal. M.Sc. (Agric) thesis. University of the Orange Free State.
- Kotze , A. V. 1980 . Waarskynlike in- en uittreedatums van ryp in Suid-Afrika. Departement van Landbou en Visserye. Tegniese Mededeling No. 167. Die Staatsdrukker, Pretoria.
- Lindsey , A. A. and Newman , J. E. 1956 . Use of official weather data in springtime—temperature analysis of an Indiana phenological record . Ecology , 37 : 812 – 823 .
- Marani , A. 1988 . “ COTMOD—A model to optimize cotton response to irrigation and nitrogen. ” . In (ed.). Optimal yield management. Grower Publishing Company Ltd., Aldershot, UK. Edited by: Rymon , D.
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- Miller , R. G. 1966 . Simultaneous statistical inference. McGraw-Hill Book Co., New York.
- Quisenberry , J. E. and Gipson , J. R. 1974 . Growth and productivity of cotton grown from seed produced under four night temperatures . Crop Sci. , 14 : 300 – 302 .
- Quisenberry , J. E. and Kohel , R. J. 1975 . Growth and development of fibre and seed in Upland cotton . Crop Sci. , 15 : 463 – 467 .
- Steyn , A. G.W. , Smit , C. F. and Du Toit , S. H.C. 1984 . Moderne statistiek vir die praktyk. Pretoria : Van Schaik . 3de uitgawe. J.L. (Edms) Bpk
- Van Ark , H. 1981 . Eenvoudige biometriese tegnieke en proefontwerpe met spesiale verwysing na entomologiese navorsing. Wetenskaplike pamflet No. 396. Afdeling Landbou-Inligting. Departement Landbou en Watervoor-siening, Die Staatsdrukker, Pretoria.