Premium
Is the Loss of Cereals in the Field as a Consequence of a Narrow Rotation Always Caused by Pathogens 1) ?
Author(s) -
Kupers L. J. P.
Publication year - 1976
Publication title -
eppo bulletin
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.327
H-Index - 36
eISSN - 1365-2338
pISSN - 0250-8052
DOI - 10.1111/j.1365-2338.1976.tb02030.x
Subject(s) - yield (engineering) , fungicide , biology , agronomy , crop rotation , growing season , crop , nitrogen , greenhouse , human fertilization , field experiment , physics , quantum mechanics , thermodynamics
In a long‐term field experiment on rotational effects with winter wheat as the test crop, continuous cereal growing leads to a depression in yield. The depression in yield of these rotations persists even when the nitrogen fertilization is increased to relatively high levels and the sole occurring pathogen, in this case Cercosporella herpotrichoides Fron, is kept in check by treatment with a fungicide. From the evidence obtained from the field experiment and additional information from an experiment in the glasshouse where the same rotations were involved, it is concluded that the observed depression in yield originates very early in the growing season. As a cause for this effect, the evidence points towards a lack of available nitrogen in late autumn and late winter.