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Effects of plant density and inorganic nitrogen fertilizer on field beans (Vicia faba)

Published online by Cambridge University Press:  27 March 2009

C. Aguilera-Diaz  and
L. Recalde-Manrique
C. Aguilera-Diaz
Affiliation:
Department of Plant Biology, University of Granada, Campus Universitario de Almería, 04120 Almeria, Spain
L. Recalde-Manrique
Affiliation:
Department of Plant Biology, University of Granada, Campus Universitario de Almería, 04120 Almeria, Spain
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Summary

A factorial experiment on Vicia faba L. cv. Alameda with three plant densities at three levels of nitrogen fertilization was done for three years (1984–87) at Granada. Yield varied markedly from 403 to 579 g/m2 between seasons. The mean increase in plant population density from 10 to 16 plants/m2 raised seed yield, but a further increase to 21 plants/m2 did not increase yield significantly. There was, however, considerable variation in the response to increasing density (Dl to D3) within each N level (N0, N1 and N2). Application of 30 kg N/ha at the start of flowering increased mean seed yield only at the lowest plant density and in 1986, but 60 kg N/ha increased yield by 135% on average over the 3 years. The highest N application rate resulted in consistently higher overall yields at each plant density. Leaf area index (LAI) showed a significant increase at 20 seeds/m2 compared with that at 10 seeds/m2 but there was no further increase at 30 seeds/m2. Harvest index (HI) was mainly affected by the annual weather conditions, and ranged from 47–4 in 1986 to 62–6 in 1987. HI was related to the mean temperature at flowering (April).

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 125 , Issue 1 , August 1995 , pp. 87 - 93
Copyright
Copyright © Cambridge University Press 1995

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