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Original Articles

Productivity and stability of grain yield in maize and sorghum as affected by rotational cropping systems in the north western Free State

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Pages 80-84 | Accepted 21 Oct 2003, Published online: 15 Jan 2013

References

  • Bennie , A. T.P. , Hoffman , J. E. and Coetzee , M. J. 1995 . Sustainable crop production on aeolian sandy semi-arid soils in South Africa . African Crop Sci. J. , 3 67–72
  • Bloem , A. A. and Barnard , R. O. 2001 . Effect of annual legumes on soil nitrogen and on the subsequent yield of maize and grain sorghum . S. Afr. J. Plant Soil , 18 56–61
  • Cook , R. J. 1993 . “ Alternative disease management strategies, p. 129–134 ” . In International Crop Science I. Crop Science Society of America, Madison, Wisconsin, USA. Edited by: Buxton , D. R. , Shibles , R. , Forsberg , R. A. , Blad , B. L. , Asay , K. H. , Paulsen , G. M. and Wilson , R. F.
  • Crookston , R. K. , Kurle , J. E. , Copeland , P. J. , Ford , J. H. and Lueschen , W. E. 1991 . Rotational cropping sequence affects yield of corn and soybean . Agron. J. , 83 108–113
  • Helmers , G. A. , Yamoah , C. F. and Varvel , G. E. 2001 . Separating the impacts of crop diversification and rotations on risk . Agron. J. , 93 1337–1340
  • Karlen , D. L. , Varvel , G. E. , Bullock , D. G. and Cruse . 1994 . Crop rotations for the 21st century . Adv. Agron. , 53 1–45
  • Kritzinger , J. H. and Nathanson , K . 1972 . The effect of fertilizer application and crop rotation on maize crop yield . Crop Production , 1 9–14
  • Moscardi , E. and De Janvry , A. 1977 . et al. , 17 Attitudes towards risk among peasants: An econometric approach. Am. J. Agric. Econ., 231–238. (Cited by Helmers, 2001.)
  • Nel , P. C. 1978 . Effect of annual rotation crops on grain yield of subsequent maize and soil characteristics . Crop Production , 7 85–91
  • Nel , A. A. , Purchase , J. L. and Barnard , A. 2003 . Productivity and stability of grain yield in wheat and maize as affected by rotational cropping systems in the eastern Free State . S. Afr. J. Plant Soil , 20 81–86
  • Peterson , T. A. and Varvel , G. E. 1989a . “ Crop yield as affected by rotation and nitrogen rate. I. Soybean. ” . In Agron. J., 81, 727–731.
  • Peterson , T. A. and Varvel , G. E. 1989b . “ Crop yield as affected by rotation and nitrogen rate. II. Grain sorghum. ” . In Agron. J., 81, 731–734.
  • Pierce , F. J. and Rice , W. 1988 . “ Crop rotation and its impact on efficiency of water and nitrogen use. ” . In Cropping strategies for efficient use of water and nitrogen. Edited by: Hargrove , W. L. 21 – 42 . Madison , Wi : SSSA . ASA Special Publication number 51. ASA, CSSA, sconsin, USA
  • SOIL CLASSIFICATION WORKING GROUP . 1991 . Soil Classification: A taxonomical system for South Africa. 2nd ed. Department of Agricultural Development, Pretoria
  • Van Der Merwe , J. J. 1979 . Gewasopvolgingsproewe met akkerbougewasse op rooi leemgrond te Towoomba-navorsingsta- sie. Tegniese Mededeling No. 160. Departement van Landbou- Tegniese Dienste, Pretoria.
  • Varvel , G. E. 2000 . Crop rotation and nitrogen effects on normalized grain yields in a long-term study . Agron. J. , 92 : 938 – 941 .

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