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Suitability of some growth characteristics to indicate phytotoxicity in pot experiments on maize test plants

Abstract

Assessment of phytotoxic conditions is often based on measuring the dry matter production of plants, although other growth characteristics may be more sensitive indicators of toxic circumstances. Purpose of this study was to evaluate the suitability of such variables as fresh weight, dry matter accumulation of shoots, longitudinal growth of leaves, and correlations between these variables for quantifying phytotoxicity caused by provocative rates of a lenacil-based herbicide. Impact of soil texture and soil pH on the manifestation of toxic symptoms were also investigated in a pot experiment on three soil types with maize (Zea mays L. cv. Carla) as test plant. Although the external circumstances were much different from field conditions, the observed differences in the phytotoxicity on the three soils were consistent with the application recommendations of the herbicide. High toxicities were observed on acidic sandy soil, and less on a similarly acidic soil of heavier texture. In contrast, slight stimulations were observed on chernozem soil at application rates lower than or corresponding to recommended field rates. Sum of the lengths of the leaves was a relatively sensitive indicator of bioactivity, showing cumulatively the effects observed for the individual leaves. Correlations between fresh weight/dry matter accumulation and fresh weight/sum  More>>
Authors:
Bujtas, K [1] 
  1. Research Institute for Soil Science and Agricultural Chemistry (RISSAC) of the Hungarian Academy of Sciences, 1022 Budapest (Hungary)
Publication Date:
Nov 01, 1994
Product Type:
Conference
Report Number:
OEFZS-4728
Reference Number:
EDB-00:109230
Resource Relation:
Conference: 24. Annual ESNA/IUR Meeting: Soil-Plant Relationships, Varna (Bulgaria), 12-16 Sep 1994; Other Information: PBD: Nov 1994; Related Information: In: 24{sup th} Annual ESNA/IUR Meeting: Soil-Plant Relationships, by Gerzabek, M. H. [ed.] [Oesterreichisches Forschungszentrum Seibersdorf, 2444 Seibersdorf (Austria)], 306 pages.
Subject:
60 APPLIED LIFE SCIENCES; CESIUM 134; CESIUM 137; DUAL-ISOTOPE SUBTRACTION TECHNIQUE; ECOSYSTEMS; ENVIRONMENTAL EFFECTS; FERTILIZATION; NITROGEN; NUTRIENTS; OZONE LAYER; PLANTS; RADIOBIOLOGY; RADIONUCLIDE KINETICS; SOILS; STRONTIUM 85
OSTI ID:
20059121
Research Organizations:
Oesterreichisches Forschungszentrum Seibersdorf, 2444 Seibersdorf (Austria)
Country of Origin:
Austria
Language:
English
Other Identifying Numbers:
Other: ISSN 0253-5270; TRN: AT0000031021231
Availability:
Available from INIS in electronic form
Submitting Site:
INIS
Size:
page(s) 293-301
Announcement Date:

Citation Formats

Bujtas, K. Suitability of some growth characteristics to indicate phytotoxicity in pot experiments on maize test plants. Austria: N. p., 1994. Web.
Bujtas, K. Suitability of some growth characteristics to indicate phytotoxicity in pot experiments on maize test plants. Austria.
Bujtas, K. 1994. "Suitability of some growth characteristics to indicate phytotoxicity in pot experiments on maize test plants." Austria.
@misc{etde_20059121,
title = {Suitability of some growth characteristics to indicate phytotoxicity in pot experiments on maize test plants}
author = {Bujtas, K}
abstractNote = {Assessment of phytotoxic conditions is often based on measuring the dry matter production of plants, although other growth characteristics may be more sensitive indicators of toxic circumstances. Purpose of this study was to evaluate the suitability of such variables as fresh weight, dry matter accumulation of shoots, longitudinal growth of leaves, and correlations between these variables for quantifying phytotoxicity caused by provocative rates of a lenacil-based herbicide. Impact of soil texture and soil pH on the manifestation of toxic symptoms were also investigated in a pot experiment on three soil types with maize (Zea mays L. cv. Carla) as test plant. Although the external circumstances were much different from field conditions, the observed differences in the phytotoxicity on the three soils were consistent with the application recommendations of the herbicide. High toxicities were observed on acidic sandy soil, and less on a similarly acidic soil of heavier texture. In contrast, slight stimulations were observed on chernozem soil at application rates lower than or corresponding to recommended field rates. Sum of the lengths of the leaves was a relatively sensitive indicator of bioactivity, showing cumulatively the effects observed for the individual leaves. Correlations between fresh weight/dry matter accumulation and fresh weight/sum of the lengths of leaves were shown to be linear over the application range, with slopes depending mostly on soil texture, and less so on soil pH. The results indicate that the suitability of the investigated variables for assessing phytotoxicity may be different on the different soil types. (author)}
place = {Austria}
year = {1994}
month = {Nov}
}