... and temperature conditions. Ibrahim Saadi a , Yael Laor a , Shlomit Medina b , Arkady Krassnovsky b and Michael Raviv b , Corresponding Author Contact Information , E-mail The Corresponding Author. a Agricultural Research ...
Research Interests:
Soil Science, Agronomy, Horticulture, Biology, Biological Sciences, and 15 moreEnvironmental Sciences, Moisture, Dissolved organic matter, Multiple Linear Regression, Fusarium oxysporum, Humidity, Moisture Content, Dissolved Organic Carbon, Microbial Activity, Soil Biology, Compost, Fusarium wilt, Calorimetry, Indexation, and Citric Acid
Research Interests:
Research Interests:
Page 1. © 2011 Science From Israel / LPPLtd., Jerusalem Israel Journal of Plant Sciences Vol. 59 2011 pp. 3951 DOI: 10.1560/IJPS.59.1.39 *Author to whom correspondence should be addressed. E-mail: laor@agri.gov.il Land ...
Research Interests:
Research Interests:
Environmental Science, Fluorescence Spectroscopy, Environmental Chemistry, Multidisciplinary, River water, and 9 moreSeawater, Total Organic Carbon, Dissolved Organic Carbon, Colored Dissolved Organic Matter, Effluent, Organic Matter, Electric Conductivity, Biochemical Oxygen Demand, and Chromophoric Dissolved Organic Matter (CDOM)
Organic amendment, and especially the use of composts, is a well-accepted sustainable agricultural practice. Compost increases soil carbon and microbial biomass, changes enzymatic activity, and enriches soil carbon and nitrogen stocks.... more
Organic amendment, and especially the use of composts, is a well-accepted sustainable agricultural practice. Compost increases soil carbon and microbial biomass, changes enzymatic activity, and enriches soil carbon and nitrogen stocks. However, relatively little is known about the immediate and long-term temporal dynamics of agricultural soil microbial communities following repeated compost applications. Our study was conducted at two field sites: Newe Ya’ar (NY, Mediterranean climate) and Gilat (G, semi-arid climate), both managed organically over 4 years under either conventional fertilization (0, zero compost) or three levels of compost amendment (20, 40 and 60 m3/ha or 2, 4, 6 L/m2). Microbial community dynamics in the soils was examined by high-and low-time-resolution analyses. Annual community composition in compost-amended soils was significantly affected by compost amendment levels in G (first, second and third years) and in NY (third year). Repeated sampling at high resolution (9–10 times over 1 year) showed that at both sites, compost application initially induced a strong shift in microbial communities, lasting for up to 1 month, followed by a milder response. Compost application significantly elevated alpha diversity at both sites, but differed in the compost–dose correlation effect. We demonstrate higher abundance of taxa putatively involved in organic decomposition and characterized compost-related indicator taxa and a compost-derived core microbiome at both sites. Overall, this study describes temporal changes in the ecology of soil microbiomes in response to compost vs. conventional fertilization.HighlightsDose-dependent changes in soil microbiome structure by manure compost applicationDynamic short-and long-term changes in soil microbiomes by compost amendmentClimate, soil properties and management influence compost-amendment effectsImmediate and temporal cumulative effects of compost on soil α and β diversity
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The controlled application of olive mill wastewater (OMW) as a by-product of the olive oil extraction process is widespread in olive oil-producing countries. Therefore, a sustainable approach necessarily targets the positive effects of... more
The controlled application of olive mill wastewater (OMW) as a by-product of the olive oil extraction process is widespread in olive oil-producing countries. Therefore, a sustainable approach necessarily targets the positive effects of soil resilience between successive annual applications to exclude possible accumulations of negative consequences. To investigate this, we applied 50, 100, 100 with tillage and 150 m3 OMW ha−1 y−1 for five consecutive seasons to an olive orchard in a semi-arid region and monitored various soil physicochemical and biological properties. OMW increased soil water content with concentration of total phenols, cations, and anions as well as various biological and soil organic matter indices. Soil hydrophobicity, as measured by water drop penetration time (WDPT), was found to be predominantly in the uppermost layer (0–3 and 3–10 cm). OMW positively affected soil biology, increased the activity and abundance of soil arthropods, and served as a food source for...
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Research Interests:
Research Interests:
Understanding and optimization of composting processes can benefit from the use of controlled simulators of various scales. The Agricultural Research Organization Composting Simulator (ARO-CS) was recently built and it is flexibly... more
Understanding and optimization of composting processes can benefit from the use of controlled simulators of various scales. The Agricultural Research Organization Composting Simulator (ARO-CS) was recently built and it is flexibly automated by means of a programmable logic controller (PLC). Temperature, carbon dioxide, oxygen and airflow are monitored and controlled in seven 9-l reactors that are mounted into separate 80-l water baths. The PLC program includes three basic heating modes (pre-determined temperature profile, temperature-feedback ("self-heating"), and carbon dioxide-dependent temperature), three basic aeration modes (airflow dependence on temperature, carbon dioxide, or oxygen) and enables all possible combinations among them. This unique high flexibility provides a robust and valuable research tool to explore a wide range of research questions related to the science and engineering of composting. In this article the logic and flexibility of the control system...
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Research Interests:
Composting in polyethylene sleeves with forced aeration may minimize odor emissions, vectors attraction and leachates associated with open windrows. A disadvantage of this technology is the lack of mixing during composting, potentially... more
Composting in polyethylene sleeves with forced aeration may minimize odor emissions, vectors attraction and leachates associated with open windrows. A disadvantage of this technology is the lack of mixing during composting, potentially leading to non-uniform products. In two pilot experiments using biosolids and green waste (1:1; v:v), thermophilic conditions (>45°C) were maintained for two months, with successful control of oxygen levels and sufficient moisture. Emitted odors declined from 1.5-3.8×10(5) to 5.9×10(3)-2.3×10(4) odor units m(-3)-air in the first 3weeks of the process, emphasizing the need of odor control primarily during this period. Therefore, composting might be managed in two phases: (i) a closed sleeve for 6-8weeks during which the odor is treated; (ii) an open pile (odor control is not necessary). Reduction of salmonella, E. coli and coliforms was effective initially, meeting the standards of "Class A" biosolids; however, total and fecal coliforms de...
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Research Interests:
Research Interests:
Biology and Agriculture
Research Interests:
Environmental Science, Fluorescence Spectroscopy, Environmental Chemistry, Multidisciplinary, River water, and 9 moreSeawater, Total Organic Carbon, Dissolved Organic Carbon, Colored Dissolved Organic Matter, Effluent, Organic Matter, Electric Conductivity, Biochemical Oxygen Demand, and Chromophoric Dissolved Organic Matter (CDOM)
... and temperature conditions. Ibrahim Saadi a , Yael Laor a , Shlomit Medina b , Arkady Krassnovsky b and Michael Raviv b , Corresponding Author Contact Information , E-mail The Corresponding Author. a Agricultural Research ...
Research Interests:
Soil Science, Agronomy, Horticulture, Biology, Biological Sciences, and 15 moreEnvironmental Sciences, Moisture, Dissolved organic matter, Multiple Linear Regression, Fusarium oxysporum, Humidity, Moisture Content, Dissolved Organic Carbon, Microbial Activity, Soil Biology, Compost, Fusarium wilt, Calorimetry, Indexation, and Citric Acid
Research Interests:
Research Interests:
Research Interests:
Research Interests:
Biology, Cell Biology, Transmission Electron Microscopy, Applied microbiology, Medicine, and 13 moreMultidisciplinary, Adhesion, Motility, Mutation, Bacteria, Flagella, Sodium Dodecyl Sulfate-Polyacrylamide Gel Electrophoresis, Calcium Carbonate, Bacterial Adhesion, Flagellin, Achromobacter, Ultraviolet Rays, and flagellum
Research Interests:
Engineering, Chemistry, Chromatography, Medicine, Polyphenols, and 15 moreIncubation, Pleurotus ostreatus, Agricultural, CHEMICAL SCIENCES, Pleurotus, Phenols, Sewage, Fractionation, Phytotoxicity, Agricultural and Food Chemistry, Polyphenol, Organic Chemicals, Olea, Olive Mill Wastewater, and Lepidium sativum
Page 1. © 2011 Science From Israel / LPPLtd., Jerusalem Israel Journal of Plant Sciences Vol. 59 2011 pp. 3951 DOI: 10.1560/IJPS.59.1.39 *Author to whom correspondence should be addressed. E-mail: laor@agri.gov.il Land ...