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אסיף מאגר המחקר החקלאי
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The effects of solar disinfestation and compost maturation level on soil microbial activity and eradication of Macrophomina phaseolina and Verticillium dahlia
Year:
2014
Source of publication :
Acta Horticulturae
Authors :
Krasnovsky, Arkady
;
.
Medina, Shlomit
;
.
Minz, Dror
;
.
Raviv, Michael
;
.
Volume :
1044
Co-Authors:
Kanaan, H., Dept. of Agroecology and Plant Health, Hebrew University of Jerusalem, Rehovot, Israel, Newe Ya'ar Research Center, Inst. of Plant Sciences, Agricultural Research Organization, Ramat Yishay, Israel
Raviv, M., Newe Ya'ar Research Center, Inst. of Plant Sciences, Agricultural Research Organization, Ramat Yishay, Israel
Medina, Sh., Newe Ya'ar Research Center, Inst. of Plant Sciences, Agricultural Research Organization, Ramat Yishay, Israel
Krassnovsky, A., Newe Ya'ar Research Center, Inst. of Plant Sciences, Agricultural Research Organization, Ramat Yishay, Israel
Minz, D., Volcani Center, Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Bet Dagan, Israel
Facilitators :
From page:
149
To page:
155
(
Total pages:
7
)
Abstract:
We studied the effect of soil solarization in combination with composts at three maturity levels (mature, partly mature and immature, but free of pathogens), compared to unamended control, on the survival of two pathogens: Macrophomina phaseolina and Verticillium dahliae, in conjunction with several indicators for soil biological activity. The experiments consisted of eight treatments divided in two groups: solar disinfested and non-disinfested control. Our hypothesis was that immature compost may boost soil temperature due to its continued in solum degradation. Temperatures were measured at depths of 10 and 20 cm throughout the experimental period. Maximum 50°C were obtained at 10 cm depth and slightly lower temperatures were recorded at 20 cm. Significant difference in temperature averages was revealed between immature compost and the other amendments in the non-mulched control, whereas in the disinfestation treatments no significant differences were found. Soil samples were collected weekly over a period of 8 weeks for microbiological analyses. Immature compost had a significant effect on soil respiration and dehydrogenase activity in both disinfested non disinfested treatments. Microbial activity decreased in all soils during the experimental period. However, solarization caused sharper suppression of microbial activity. V. dahliae was eradicated by all solarization treatments at both depths, but survived all nonsolarized controls. M. phaseolina survived all treatments. High temperatures improved the viability of M. phaseolina. This effect might be related to eradication of microbial antagonists to M. phaseolina.
Note:
Related Files :
Calorimeter
compost
Dahlia
Dehydrogenase
Macrophomina phaseolina
respiration
solar disinfestation
Verticillium dahliae
Show More
Related Content
More details
DOI :
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
30368
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:54
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Scientific Publication
The effects of solar disinfestation and compost maturation level on soil microbial activity and eradication of Macrophomina phaseolina and Verticillium dahlia
1044
Kanaan, H., Dept. of Agroecology and Plant Health, Hebrew University of Jerusalem, Rehovot, Israel, Newe Ya'ar Research Center, Inst. of Plant Sciences, Agricultural Research Organization, Ramat Yishay, Israel
Raviv, M., Newe Ya'ar Research Center, Inst. of Plant Sciences, Agricultural Research Organization, Ramat Yishay, Israel
Medina, Sh., Newe Ya'ar Research Center, Inst. of Plant Sciences, Agricultural Research Organization, Ramat Yishay, Israel
Krassnovsky, A., Newe Ya'ar Research Center, Inst. of Plant Sciences, Agricultural Research Organization, Ramat Yishay, Israel
Minz, D., Volcani Center, Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Bet Dagan, Israel
The effects of solar disinfestation and compost maturation level on soil microbial activity and eradication of Macrophomina phaseolina and Verticillium dahlia
We studied the effect of soil solarization in combination with composts at three maturity levels (mature, partly mature and immature, but free of pathogens), compared to unamended control, on the survival of two pathogens: Macrophomina phaseolina and Verticillium dahliae, in conjunction with several indicators for soil biological activity. The experiments consisted of eight treatments divided in two groups: solar disinfested and non-disinfested control. Our hypothesis was that immature compost may boost soil temperature due to its continued in solum degradation. Temperatures were measured at depths of 10 and 20 cm throughout the experimental period. Maximum 50°C were obtained at 10 cm depth and slightly lower temperatures were recorded at 20 cm. Significant difference in temperature averages was revealed between immature compost and the other amendments in the non-mulched control, whereas in the disinfestation treatments no significant differences were found. Soil samples were collected weekly over a period of 8 weeks for microbiological analyses. Immature compost had a significant effect on soil respiration and dehydrogenase activity in both disinfested non disinfested treatments. Microbial activity decreased in all soils during the experimental period. However, solarization caused sharper suppression of microbial activity. V. dahliae was eradicated by all solarization treatments at both depths, but survived all nonsolarized controls. M. phaseolina survived all treatments. High temperatures improved the viability of M. phaseolina. This effect might be related to eradication of microbial antagonists to M. phaseolina.
Scientific Publication
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