Effects of soil pH on isoxaflutole injury to tolerant and sensitive chickpea genotypes

Title
Effects of soil pH on isoxaflutole injury to tolerant and sensitive chickpea genotypes
Publication Date
2006
Author(s)
Datta, Avishek
Sindel, Brian Mark
( author )
OrcID: https://orcid.org/0000-0002-4100-218X
Email: bsindel@une.edu.au
UNE Id une-id:bsindel
Jessop, Robin Stephen
Birchall, Craig
Guppy, Christopher
( author )
OrcID: https://orcid.org/0000-0001-7274-607X
Email: cguppy@une.edu.au
UNE Id une-id:cguppy
Felton, W
Editor
Editor(s): C Preston, JH Watts and ND Crossman
Type of document
Conference Publication
Language
en
Entity Type
Publication
Publisher
Weed Management Society of South Australia
Place of publication
Torrens Park, Australia
UNE publication id
une:11751
Abstract
The relative susceptibilities of two desi chickpea genotypes, 97039-1275 (tolerant line) and 91025-3021 (sensitive line), to isoxaflutole were studied under a range of soil pH levels in a pot trial under glasshouse conditions. Isoxaflutole was applied pre-emergence at 0, 100 (recommended rate) and 400 g ha⁻¹. The soil pH was adjusted to approximately 5.0, 6.8, 7.9 and 8.8. The results demonstrated the existence of differential tolerances among chickpea genotypes to isoxaflutole at different rates and soil pH. Isoxaflutole applied pre-emergence resulted in increased phytotoxicity with increases in soil pH and herbicide rate. Even the most tolerant chickpea genotype was damaged when exposed to higher pH and herbicide rates, as indicated by increased leaf chlorosis (22-43%) and significant reductions in plant height (22-50%), shoot dry weight (32-67%) and root dry weight. The effects were more severe with the sensitive genotype. The susceptibility of chickpea to this key herbicide needs to be taken into account in breeding of new lines and in the agronomy of chickpea production.
Link
Citation
15th Australian Weeds Conference Papers and Proceedings: Managing Weeds in a Changing Climate, p. 406-409
ISBN
0646463446
Start page
406
End page
409

Files:

NameSizeformatDescriptionLink