Effects of row spacing and population density on grain sorghum production in Southern Alberta

Hegde, B.R. and Major, D.J. and Wilson, D.B. and Krogman, K.K. (1976) Effects of row spacing and population density on grain sorghum production in Southern Alberta. Canadian Journal of Plant Science, 56 (1). pp. 31-37.

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Row spacings of 18–72 cm and population densities of 75,000 to 346,000 plants/ha had no consistent effect on grain yield of two sorghum hybrids (Pride X4004 and Pride X4053) because of compensating variations within yield components. Grain yield per panicle increased as row spacing increased but this was offset by a decrease in panicles per plant and panicles per square meter. Grain yield per panicle, panicles per plant, and panicles per square meter decreased as population density increased. The choice of row spacing and population density in field production will, therefore, depend on convenience factors related to crop management. Evapotranspiration for the growing season was 179 mm in 1973 and 204 mm in 1974. Highest water use efficiencies occurred at the low population densities and narrow row spacings. There were differences between the two hybrids. Grain yield of Pride X4004 was greater than that of Pride X4053 because the former produced a greater number of seed-bearing tillers. Grain yield differences in Pride X4004 among the three experiments were due to differences in grain yield per panicle

Item Type: Article
Author Affiliation: Research Station, Agriculture Canada, Lethbridge, Alberta
Subjects: Plant Production
Divisions: Sorghum
Depositing User: Ms K Syamalamba
Date Deposited: 19 Jul 2012 05:45
Last Modified: 19 Jul 2012 05:46
Official URL: http://dx.doi.org/10.4141/cjps76-006
URI: http://eprints.icrisat.ac.in/id/eprint/6870

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