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Competition among wheat plants sown at a wide range of densities
Abstract
An experiment was undertaken with wheat (cv. Insignia 49) to study the effects of interplant competition on dry matter and grain production. Crops ranging in density from 1.4 to 1078 plants per sq. metre were established, and light intensity and growth measurements were made within the crop. Four sequential stages in the growth of the crop were recognized, namely: A period in which there was no interplant competition at any density.A period in which the crop growth rate showed a curvilinear relationship to the leaf area index and a linear relationship to light interception.A period when the weight of ears (early dough stage) showed a linear relationship to an expression involving the weight of green leaf in an earlier period and the percentage survival of tillers.A period of grain filling and ripening in which some further relative changes in ear and grain weight occurred. It is suggested that the application of this type of analysis to the reaction of different genotypes to crowding may add to an understanding of crop performance.
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Citations
Cited by
Correlated Changes in Plant Size and Number in Plant Populations
White, J., & Harper, J. L. (1970) · The Journal of Ecology · doi:10.2307/2258284 · Cited by 462
Seed biology and yield of grain crops
(2017) · CABI eBooks · doi:10.1079/9781780647708.0000 · Cited by 403
The Quantitative Relationships Between Plant Population And Crop Yield
Willey, R. W., & Heath, S. B. (1969) · Advances in Agronomy · doi:10.1016/s0065-2113(08)60100-5 · Cited by 310
The physiological response of winter wheat to reductions in plant density
WHALEY, J. M., SPARKES, D. L., FOULKES, M. J., SPINK, J. H., SEMERE, T., & SCOTT, R. K. (2000) · Annals of Applied Biology · doi:10.1111/j.1744-7348.2000.tb00048.x · Cited by 184
Patterns of tillering and grain production of winter wheat at a wide range of plant densities.
Darwinkel, A. (1978) · Netherlands Journal of Agricultural Science · doi:10.18174/njas.v26i4.17081 · Cited by 170
Metadata
- Authors
- Puckridge, D., & Donald, C.
- Venue
- Australian Journal of Agricultural Research
- Publisher
- CSIRO Publishing
- Published
- 1967-04-01
- Volume
- 18
- Issue
- 2
- Pages
- 193-211
- ISSN
- 0004-9409 (ISSN-L)
- 1444-9838
- OpenAlex
- W1981014519
- Cited by
- 185
- References
- 0
- FWCI
- 12.75
- Type
- journal article
- Language
- en
- Open access
- closed
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- Puckridge, D., & Donald, C. (1967). Competition among wheat plants sown at a wide range of densities. Australian Journal of Agricultural Research. https://doi.org/10.1071/ar9670193
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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