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Effects of plant population density on spring-sown field beans (Vicia faba) with different growth habits

Published online by Cambridge University Press:  27 March 2009

C. J. Pilbeam
Affiliation:
University of Nottingham Department of Agriculture and Horticulture, School of Agriculture, Sutton Bonington, Loughborough, Leicestershire, LE12 5RD, UK
G. Duc
Affiliation:
University of Nottingham Department of Agriculture and Horticulture, School of Agriculture, Sutton Bonington, Loughborough, Leicestershire, LE12 5RD, UK
P. D. Hebblethwaite
Affiliation:
University of Nottingham Department of Agriculture and Horticulture, School of Agriculture, Sutton Bonington, Loughborough, Leicestershire, LE12 5RD, UK

Summary

Determinate varieties of Vicia faba are smaller and may require higher plant population densities than their conventional indeterminate counterparts to attain high yields. This hypothesis was examined at the University of Nottingham farm at Sutton Bonington, UK, and at INRA, Dijon, France in 1986 and 1987. The determinate varieties Ticol and TP667 and indeterminate M5.1 and Maris Bead were sown in the spring to give a range of densities of 10–100 plants/m2.

Yields generally increased as population density increased. The optimum density for determinate varieties was higher than for indeterminate varieties. Indeterminate varieties yielded more than determinate varieties at all plant densities, perhaps because of their larger canopy. Seed yields were affected by year and location. Greater yields were associated with heavier seeds and more seeds per pod.

Although several yield components, when expressed per unit area, were significantly correlated with seed yield, their coefficients of determination were never very large. This confirmed the plasticity of yield in field beans.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1990

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