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אסיף מאגר המחקר החקלאי
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Effect of ecosoil and NH4 in controlling soilborne pathogens
Year:
2005
Source of publication :
Acta Horticulturae
Authors :
Ben-Yephet, Yephet
;
.
Fine, Pinchas
;
.
Reuven, Michal
;
.
Tsror, Leah
;
.
Volume :
698
Co-Authors:
Ben-Yephet, Y., Departments of Plant Pathology, Israel
Tsror, L., Departments of Plant Pathology, Israel
Reuven, M., Departments of Plant Pathology, Israel
Gips, A., Extension Service, Israel
Bar, Z., Hevel Ma'on, Israel
Einstein, A., Hevel Ma'on, Israel
Turjeman, Y., Nesher Company, Israel
Fine, P., Soil Chemistry and Plant Nutrition, ARO, Volcani Center, Bet Dagan 50250, Israel
Facilitators :
From page:
115
To page:
122
(
Total pages:
8
)
Abstract:
Ecosoil (alkaline stabilized biosolids) is produced from a mixture of de-watered sludge (125 dry weight basis), cement kiln dust (CKD) and fillers (500 g dry weight basis). The biosolids are pasteurized and stabilized by heating (>60°C for 12 h) and high pH (>12) produced by the hydration of the CaO content of the CKD. Ecosoil is produced by an advanced technology and the product is free of sanitary restrictions. The product simultaneously offers several potential benefits to both growers and the environment, including liming of acid soils, improving soil structure and replenishing plant nutrients. Addition of Ecosoil to soil can increase the soil solution pH and consequently increase converting NH4 to NH3. The fungicidal activity of the combined treatment (Ecosoil + NH4) was studied by testing the following 4 treatments: Ecosoil, ammonium sulfate, Ecosoil plus ammonium sulfate, and control. The materials were incorporated into the soil, which was then irrigated to field capacity. The results of laboratory experiments showed that application of Ecosoil + NH4 to sandy soil reduced counts of Fusarium oxysporum f.sp. dianthi below the detection threshold. The pathogen control efficiency was increased by increasing the Ecosoil dose which increased soil solution pH. Thus, effective control was observed in the pH range of 10- 11, with the highest control activity in the pH range of 10.5-11.0. The ammonium sulfate dose that was necessary to achieve effective control decreased as the soil solution pH increased. The effective toxicity was highest 2-4 days after irrigation of the soil. The soil pH gradually declined to the original pH, 8-16 days after irrigation. Other laboratory experiments indicated that the combined application was also effective in controlling other soilborne pathogens such as Verticillium dahliae, Sclerotinia sclerotiorum, and Sclerotium rolfsii. The Ecosoil dose necessary to increase soil pH to 10.5 in clay soil (60% clay) was 4 times as great as that in sandy loam soil (5% clay).
Note:
Related Files :
biosolids
Fusarium
Sclerotinia sclerotiorum
Sclerotium rolfsii
Verticillium dahliae
Show More
Related Content
More details
DOI :
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
24281
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:06
Scientific Publication
Effect of ecosoil and NH4 in controlling soilborne pathogens
698
Ben-Yephet, Y., Departments of Plant Pathology, Israel
Tsror, L., Departments of Plant Pathology, Israel
Reuven, M., Departments of Plant Pathology, Israel
Gips, A., Extension Service, Israel
Bar, Z., Hevel Ma'on, Israel
Einstein, A., Hevel Ma'on, Israel
Turjeman, Y., Nesher Company, Israel
Fine, P., Soil Chemistry and Plant Nutrition, ARO, Volcani Center, Bet Dagan 50250, Israel
Effect of ecosoil and NH4 in controlling soilborne pathogens
Ecosoil (alkaline stabilized biosolids) is produced from a mixture of de-watered sludge (125 dry weight basis), cement kiln dust (CKD) and fillers (500 g dry weight basis). The biosolids are pasteurized and stabilized by heating (>60°C for 12 h) and high pH (>12) produced by the hydration of the CaO content of the CKD. Ecosoil is produced by an advanced technology and the product is free of sanitary restrictions. The product simultaneously offers several potential benefits to both growers and the environment, including liming of acid soils, improving soil structure and replenishing plant nutrients. Addition of Ecosoil to soil can increase the soil solution pH and consequently increase converting NH4 to NH3. The fungicidal activity of the combined treatment (Ecosoil + NH4) was studied by testing the following 4 treatments: Ecosoil, ammonium sulfate, Ecosoil plus ammonium sulfate, and control. The materials were incorporated into the soil, which was then irrigated to field capacity. The results of laboratory experiments showed that application of Ecosoil + NH4 to sandy soil reduced counts of Fusarium oxysporum f.sp. dianthi below the detection threshold. The pathogen control efficiency was increased by increasing the Ecosoil dose which increased soil solution pH. Thus, effective control was observed in the pH range of 10- 11, with the highest control activity in the pH range of 10.5-11.0. The ammonium sulfate dose that was necessary to achieve effective control decreased as the soil solution pH increased. The effective toxicity was highest 2-4 days after irrigation of the soil. The soil pH gradually declined to the original pH, 8-16 days after irrigation. Other laboratory experiments indicated that the combined application was also effective in controlling other soilborne pathogens such as Verticillium dahliae, Sclerotinia sclerotiorum, and Sclerotium rolfsii. The Ecosoil dose necessary to increase soil pH to 10.5 in clay soil (60% clay) was 4 times as great as that in sandy loam soil (5% clay).
Scientific Publication
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