Environment influences green foxtail (Setaria viridis) competition with wheat (Triticum aestivum)

Temperature, soil moisture, green foxtail density, relative emergence dates, and soil fertility effects on green foxtail and spring wheat competition were evaluated in controlled environments. Green foxtail competition was highest at 30 C and without moisture stress. Early green foxtail emergence in...

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Bibliographic Details
Published in:Weed technology 1992-07, Vol.6 (3), p.607-610
Main Authors: Peterson, D.E, Nalewaja, J.D
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Biological and medical sciences
BIOLOGICAL COMPETITION
COMPETENCIA BIOLOGICA
COMPETITION BIOLOGIQUE
EMERGENCE
EMERGENCIA
ENVIRONMENTAL FACTORS
FACTEUR DU MILIEU
FACTORES AMBIENTALES
FERTILIDAD DEL SUELO
FERTILITE DU SOL
Field capacity
Fundamental and applied biological sciences. Psychology
Generalities, botany, ecology, damages, economic importance
Germination
LEVEE
MALEZAS
MAUVAISE HERBE
Nitrogen
Parasitic plants. Weeds
Phytopathology. Animal pests. Plant and forest protection
PLANT DENSITY
PLANT POPULATION
Plants
POBLACION VEGETAL
POPULATION VEGETALE
REGIME HYDRIQUE DU SOL
REGIMEN HIDRICO DEL SUELO
SEEDLING EMERGENCE
SETARIA (GRAMINEA)
SETARIA (GRAMINEE)
SETARIA (GRASS)
SOIL FERTILITY
Soil temperature regimes
Soil water
SOIL WATER REGIMES
Sowing date
Sustainable agriculture
TEMPERATURA
TEMPERATURE
TRITICUM AESTIVUM
WEEDS
Wheat
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Summary:Temperature, soil moisture, green foxtail density, relative emergence dates, and soil fertility effects on green foxtail and spring wheat competition were evaluated in controlled environments. Green foxtail competition was highest at 30 C and without moisture stress. Early green foxtail emergence increased competition with wheat more than changes in temperature, soil moisture, or green foxtail density. At 30 C, wheat fresh weight was reduced 50% by green foxtail seeded 4 d before wheat, but only 13% by foxtail seeded 4 d after wheat. Doubling the nitrogen and total nutrient concentration did not increase wheat growth, but increased foxtail weight 41 and 75%, respectively.
ISSN:0890-037X
1550-2740
DOI:10.1017/S0890037X00035880