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Effects of sowing technique on yield formation of Vicia faba as affected by population density, sowing date and plant type

Published online by Cambridge University Press:  27 March 2009

H. Stützel ,
W. Aufhammer  and
A. Löber
H. Stützel
Affiliation:
Institut für Pflanzenbau und Grünland (340), Universität Hohenheim, D-7000 Stuttgart 70, Germany
W. Aufhammer
Affiliation:
Institut für Pflanzenbau und Grünland (340), Universität Hohenheim, D-7000 Stuttgart 70, Germany
A. Löber
Affiliation:
Institut für Pflanzenbau und Grünland (340), Universität Hohenheim, D-7000 Stuttgart 70, Germany
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Summary

Field experiments were carried out in which three different sowing techniques: sowing by hand, with a conventional seed drill and with a precision drill, were used to plant an indeterminate and a determinate cultivar of Vicia faba at two sowing dates and at three population densities in 1989 and 1990 in Southern Germany.

Delayed sowing reduced field emergence rates in both years. Hand sowing produced the poorest stands in some instances due to an insufficient sowing depth being achieved. Only at late sowing dates did precision drilling give greater field emergence rates than conventional drilling. During the early stages of growth, hand and precision sowing resulted in crops with the greatest light interception and dry matter production. However, these differences between sowing techniques decreased later on. Lodging was most severe in conventionally drilled crops, particularly at high population density. Thus, when lodging occurred, dry matter and grain yields decreased with increasing plant density in conventional sowings, although they tended to increase in hand-sown and precision-drilled crops. Overall, apart from this interaction, there was no significant effect of sowing technique on grain yield. Grain yields and dry matter production were generally higher in the indeterminate cultivar Herz Freya than in the determinate cultivar Ticol, but there were no differential effects of sowing technique.

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 122 , Issue 2 , April 1994 , pp. 255 - 264
Copyright
Copyright © Cambridge University Press 1994

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References

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