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Effect of Plant Density On Grain Yield and Yield Stability of Sorghum Hybrids Differing in Maturity

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Wade, L. J. and Douglas, C. A. (1990) Effect of Plant Density On Grain Yield and Yield Stability of Sorghum Hybrids Differing in Maturity. Australian Journal of Experimental Agriculture, 30 (2). pp. 257-264. ISSN 08161089 (ISSN)

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Article Link(s): https://doi.org/10.1071/EA9900257

Abstract

The extent and significance of the maturity x density interaction in dryland grain sorghum, and its implications for yield stability, were examined for 3 hybrids over 6 locations. Site mean grain yield ranged from 0.44 to 4.96 t/ha. Early maturity was superior in environments truncated by water stress, while late maturity was superior in favourable environments. Mid-season maturity provided greater stability of grain yield. Maximum yield by each hybrid at each yield level did not differ significantly from yield at a density of 75 000 plants/ha. The highest grain yields should be obtained with plant densities of 50000-100000 plants/ha under rainfed conditions, where yield expectations range from 0 to 5.0 t/ha. The results demonstrate the stability of sorghum grain yield over a wide range of plant density and crop maturity. Regression analysis aided data presentation and interpretation.

Item Type:Article
Business groups:Horticulture and Forestry Science
Subjects:Science > Botany > Genetics
Agriculture > Agriculture (General) > Methods and systems of culture. Cropping systems
Plant culture > Field crops > Sorghum
Plant pests and diseases
Deposited On:03 Nov 2022 00:56
Last Modified:03 Nov 2022 00:56

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