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Dissipation of metham‐sodium from soil and its effect on the control of Orobanche aegyptiaca
Year:
1995
Source of publication :
Weed Research
Authors :
Golan, Shmuel
;
.
Kleifeld, Yeshaiahu
;
.
Volume :
35
Co-Authors:
GOLDWASSER, Y., Department of Weed Science, A.R.O, Newe Ya'ar Research Centre, P. O. Box 90000, Haifa, 31900, Israel
KLEIFELD, Y., Department of Weed Science, A.R.O, Newe Ya'ar Research Centre, P. O. Box 90000, Haifa, 31900, Israel
GOLAN, S., Department of Weed Science, A.R.O, Newe Ya'ar Research Centre, P. O. Box 90000, Haifa, 31900, Israel
BARGUTTI, A., Department of Weed Science, A.R.O, Newe Ya'ar Research Centre, P. O. Box 90000, Haifa, 31900, Israel
RUBIN, B., Department of Field Crops, Faculty of Agriculture, Hebrew University of Jerusalem, Rehovot, 76100, Israel
Facilitators :
From page:
445
To page:
452
(
Total pages:
8
)
Abstract:
The effect of metham‐sodium on Orobanche aegyptiaca Pers. was tested in the laboratory and in soil columns. The laboratory experiment was carried out on O. aegyptiaca seeds placed in Petri dishes and germinated with GR24, a synthetic strigol analogue. In soil columns, metham‐sodium was applied by application of the chemical through the irrigation water to three different soils and its dissipation determined in three soil layers by gas chromatography, by a lettuce bio‐assay to check the herbicide's phytotoxicity, and with a flax bioassay to check its effect on O. aegyptiaca. Results of the germination experiments showed an exponential decrease in O. aegyptiaca germination, parallel with the increase of metham‐sodium concentration, with an average effective concentration (EC50) of 18 mg L−1. In a soil column, methylisothiocyanate (MIT, the metham active product) rapidly disappeared from the upper soil level (0–10 cm) within 24 h. Seven days after application only traces of MIT remained in all soil layers in all soils, except for the sandy Rehovot soil that contained low concentrations in the lower soil layer (20–30 cm). Flax bioassay confirmed the chemical analysis, showing that O. aegyptiaca tubercles developed only on plants grown in the upper soil layer of all three soils. Copyright © 1995, Wiley Blackwell. All rights reserved
Note:
Related Files :
Orobanche aegyptiaca
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More details
DOI :
10.1111/j.1365-3180.1995.tb01641.x
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
19651
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:30
Scientific Publication
Dissipation of metham‐sodium from soil and its effect on the control of Orobanche aegyptiaca
35
GOLDWASSER, Y., Department of Weed Science, A.R.O, Newe Ya'ar Research Centre, P. O. Box 90000, Haifa, 31900, Israel
KLEIFELD, Y., Department of Weed Science, A.R.O, Newe Ya'ar Research Centre, P. O. Box 90000, Haifa, 31900, Israel
GOLAN, S., Department of Weed Science, A.R.O, Newe Ya'ar Research Centre, P. O. Box 90000, Haifa, 31900, Israel
BARGUTTI, A., Department of Weed Science, A.R.O, Newe Ya'ar Research Centre, P. O. Box 90000, Haifa, 31900, Israel
RUBIN, B., Department of Field Crops, Faculty of Agriculture, Hebrew University of Jerusalem, Rehovot, 76100, Israel
Dissipation of metham‐sodium from soil and its effect on the control of Orobanche aegyptiaca
The effect of metham‐sodium on Orobanche aegyptiaca Pers. was tested in the laboratory and in soil columns. The laboratory experiment was carried out on O. aegyptiaca seeds placed in Petri dishes and germinated with GR24, a synthetic strigol analogue. In soil columns, metham‐sodium was applied by application of the chemical through the irrigation water to three different soils and its dissipation determined in three soil layers by gas chromatography, by a lettuce bio‐assay to check the herbicide's phytotoxicity, and with a flax bioassay to check its effect on O. aegyptiaca. Results of the germination experiments showed an exponential decrease in O. aegyptiaca germination, parallel with the increase of metham‐sodium concentration, with an average effective concentration (EC50) of 18 mg L−1. In a soil column, methylisothiocyanate (MIT, the metham active product) rapidly disappeared from the upper soil level (0–10 cm) within 24 h. Seven days after application only traces of MIT remained in all soil layers in all soils, except for the sandy Rehovot soil that contained low concentrations in the lower soil layer (20–30 cm). Flax bioassay confirmed the chemical analysis, showing that O. aegyptiaca tubercles developed only on plants grown in the upper soil layer of all three soils. Copyright © 1995, Wiley Blackwell. All rights reserved
Scientific Publication
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