Some notes on the use of hygrograms for phytopathological purposes with special reference to their reliability.

Authors

  • G.A. de Weille

DOI:

https://doi.org/10.18174/njas.v12i3.17524

Abstract

Attention is directed to the need (in warning systems for control of crop fungus diseases) for measurement on the ground between plant rows (as opposed to some distance above ground) of momentary (as opposed to averaged) values of relative humidity. Evidence is provided that hygrographs, if their records are read in a special way, measure relative humidity most accurately at levels above 90%, and hence in the range most important for disease warning systems.-W.M.S.R. (Abstract retrieved from CAB Abstracts by CABI’s permission)

Downloads

Published

1964-08-01

Issue

Vol. 12 No. 3 (1964)

Section

Papers

License

© Copyright KLV All rights reserved. The copyright covers the exclusive right to reproduce and distribute the contribution, including reprints, translations, photographic reproductions, microform, electronic form (offline, online), or any other reproductions of similar nature. The Author may publish his/her contribution on his/her personal Web page provided that he/she creates a link to http://library.wur.nl/ojs/index.php/njas and that together with this electronic version it is clearly pointed out, by prominently adding "© KLV", that the copyright for this contribution is held by KLV. The full-text version may be available from the Author's Web page only after a delay of 12 months following the publication of the paper, whereas such a delay is not required for the abstract.