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Vergleich von Methoden zur Bestimmung der Wurzellängendichte bei Kulturpflanzen
Author(s) -
Gäth S.,
Meuser H.
Publication year - 1989
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1111/j.1439-037x.1989.tb00745.x
Subject(s) - monolith , calibration , mathematics , environmental science , vegetation (pathology) , sugar cane , soil science , agronomy , chemistry , biology , statistics , medicine , biochemistry , pathology , catalysis
Comparison of methods to determine the root length density of crops In this paper, in a first step a comparison of the soil core or monolith method with the profile wall method was undertaken with data obtained for sugar beets. Results show that differences between both methods, expressed as a factor, decline destinctly during the vegetation period. This means that the calibration of the profile wall method with the help of a time independent, average factor cannot be recommended. In a second step, we compared the monolith method with a new procedure to estimate root growth. Results for a soil derived from loess show that values measured and estimated correspond very well, while for a sandy soil, there was only a satisfactory correspondence. The comparison led to the conclusion, that in field work the monolith method should be preferred to the profile wall method, and the root growth estimation procedure is available alternative to determine the root length density of cereals.