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Interference of Three Annual Grasses with Grain Sorghum (Sorghum bicolor)
- Source :
- Weed Technology. 4:245-249
- Publication Year :
- 1990
- Publisher :
- Cambridge University Press (CUP), 1990.
-
Abstract
- Barnyardgrass, large crabgrass, and Texas panicum were evaluated in field experiments over 3 yr to measure their duration of interference and density on grain sorghum yield. When grain yield data were converted to a percentage of the weed-free control, linear regression predicted a 3.6% yield loss for each week of weed interference regardless of year or grass species. Grain sorghum grown in a narrow (61-cm) row spacing was affected little by full-season interference; however, in wide (91-cm) rows, interference increased as grass density increased. Data from the wide-row spacing were described by linear regression following conversion of grain yield to percentages and weed density to log10. A separate nonlinear model also was derived which could predict the effect of weed density on grain sorghum yield.
- Subjects :
- 0106 biological sciences
Yield (engineering)
biology
04 agricultural and veterinary sciences
Plant Science
biology.organism_classification
Weed control
Sorghum
01 natural sciences
Plant ecology
010602 entomology
Agronomy
Linear regression
040103 agronomy & agriculture
0401 agriculture, forestry, and fisheries
Weed
Agronomy and Crop Science
Sweet sorghum
Panicum
Mathematics
Subjects
Details
- ISSN :
- 15502740 and 0890037X
- Volume :
- 4
- Database :
- OpenAIRE
- Journal :
- Weed Technology
- Accession number :
- edsair.doi...........579e41463807bd8aee283ce9bf91b5c8