Study of Chemical and Physical Properties and the Soil Sorption of Metolachlor and Carbofuran in Three Tropical Soils
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Study of Chemical and Physical Properties and the Soil Sorption of Metolachlor and Carbofuran in Three Tropical Soils
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2. Soil testing measures exchangeable potassium, the form readily available to plants. Factors like wetting/drying, freeze/thaw, and iron oxidation states can impact exchangeable potassium levels.
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3) The second paper shows that inoculation of soybean, mustard and wheat crops with the phosphate solubilizing fungus Aspergillus awamori was more effective at solubilizing rock phosphate than other microbes tested.
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Direct and residual effect of rock phosphate on soil and crop production Four...
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Phosphorus Dynamics in Calcareous soils with respect to crop growth
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Legacy phosphorus in calcareous soils effects of long term poultry litter app...
Legacy phosphorus in calcareous soils effects of long term poultry litter app...
Synthesis And Evaluation of Different Numbers of Phosphonate Group Containing...
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Soil and Organic Gardening
Organic gardening focuses on maintaining healthy soil life through appropriate soil management. A healthy soil has the proper balance of minerals, organic matter, water, air, and living organisms. The gardener can impact these components through techniques like watering, reducing compaction, adding compost and mulch, and choosing fertilizers and pesticides that don't harm soil life. Good soil structure with crumb sizes from 0.2mm to 3mm is important for plant growth, but can be damaged by over-cultivation.
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This document summarizes an expert webinar on analyzing total organic carbon, nitrogen, and sulfur in soils and soil eluates. The webinar covered CN(S) analysis of soils including sample preparation, combustion chemistry, gas separation and detection when using argon versus helium as a carrier gas. It also discussed analyzing total organic carbon in soils and soil eluates according to ISO 10694 standards. Experimental results were presented demonstrating the equivalence of argon and helium as carrier gases. The webinar provided information on optimizing elemental analysis of soils to better understand carbon-nitrogen ratios and microbiological activity for selective fertilization of agricultural land.Estimation of phosphorus loss from agricultural land in the heartland region ...
Full Proceedings is available at: http://www.extension.org/72813
Phosphorus (P) indices are a key tool to minimize P loss from agricultural fields but there is insufficient water quality data to fully test them. Our goal is to use the Agricultural Policy/Environmental eXtender Model (APEX), calibrated with existing edge-of-field runoff data, to refine P indices and demonstrate their utility as a field assessment tool capable of protecting water quality. In this phase of the project our goal is to use existing small-watershed data from the Heartland Region (IA, KS, MO and NE) to determine the level of calibration needed for APEX before using the model to generate estimates of P loads appropriate for evaluating a P Index.
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Quantitative analysis 11
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3. Other elements like halogens, sulfur, phosphorus, and oxygen can be estimated through various oxidation and precipitation reactions to form compounds that can be weighed or titrated. Formulas are provided for calculating the percentage of each element from the experimental results.
Coltan
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Buchi kjeldahl guide
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Como citar este trabajo
Torri S, Alvarez R, Lavado R. 2003. Mineralization of Carbon from Sewage sludge in three soils of the Argentine pampas. Commun. Soil Sci. and Plant Anal. (Taylor & Francis, Inc., 325 Chestnut Street, Suite 800, Philadelphia, PA 19106) 34 (13-14): 2035-2043. ISSN (impresa): 0010-3624. ISSN (electronica): 1532-2416.
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This document summarizes a study that analyzed the chemical composition of wastewater generated from olive oil production and evaluated its potential use as fertilizer on agricultural land. The study found that the wastewater was acidic but rich in organic matter and nutrients like potassium. Soil analysis before and after application of the wastewater showed increases in organic matter and nutrients. Over 280 days, biochemical and chemical oxygen demand of the wastewater decreased by around 50%, indicating its characteristics were modifying. The high potassium and organic content suggests the wastewater could improve soil quality and be a lower-cost fertilizer, though long term effects require more research.
Determination of characteristics of wastewater generated by the elaboration o...
This document summarizes a study on the characterization of wastewater generated from olive oil production and the possibility of using it as fertilizer on agricultural land. The study analyzed parameters like pH, conductivity, organic matter, nutrients in the wastewater over 280 days and in soil after wastewater application. Results showed wastewater was acidic initially but became neutral over time, with 50% reduction in COD and BOD. Soil parameters like pH, organic matter and potassium increased after application indicating wastewater's potential as fertilizer due to its high nutrient and organic matter content. However, long term effects on soil and potential contamination require further assessment.
I012636670
This document summarizes a study that determined the chemical composition of wastewater from olive oil production and evaluated its potential use as fertilizer on agricultural land. The wastewater was found to have high levels of organic matter, potassium, and nutrients that could improve soil properties. Samples of wastewater and soil were taken from an olive oil factory in Albania before and after applying the wastewater to land. Analysis found the wastewater had high chemical oxygen demand and biochemical oxygen demand but these decreased by 50% over 280 days. Soil parameters like pH, organic matter, and potassium increased after application, indicating the wastewater could fertilize soils and boost olive growth.
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CHAPTER4.DOC
This chapter analyzes the chemical composition of saturated paste extracts from soil samples, which reflects the soil solution. The soil solutions were highly acidic, with pH ranging from 4.36-4.91. Major cations were K+, Mg2+, and Al, while major anions were Cl-, F-, and SO42-. Electrical conductivity decreased with increasing forest stand age, indicating declining nutrient availability over time due to leaching. Aluminum concentrations ranged from 1.3-3.7 mg/L. The composition showed a cation excess that may be explained by dissolved organic carbon in the solutions.
Effect of palm oil mill effluent on soil samples on the environment
This document analyzes the effect of palm oil mill effluent (POME) on soil samples in Isiala Mbano LGA, Nigeria. Soil samples were collected from sites with POME discharge (locations A) and without POME discharge (locations B). Physicochemical analysis found higher levels of COD, BOD, nutrients and lower pH in location A soils, indicating pollution from POME. Microbial analysis identified higher counts of Pseudomonas, Bacillus and fungi in location A soils. While POME increased soil nutrients, it also decreased microbial populations and made the soil dark, damp, and prevented vegetation growth due to pollution. The study concludes POME significantly impacts soil properties and quality.
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The document summarizes research on exploring microbial diversity to identify novel microbial functions. It describes enrichment and isolation of hydrocarbon-degrading bacteria from oil sludge to create a bacterial consortium for bioremediating oil spills. Molecular tools were used to characterize the isolates and determine their catabolic pathways. The consortium showed improved degradation of crude oil and model petroleum compounds compared to individual isolates.
Effects of biochar and charcoal on soil-hydraulic properties
Effects of biochar and charcoal on soil-hydraulic propertiesInternational Water Management Institute (IWMI)
Presented by Haimanote K. Bayabil, Johannes C. Lehmann, Birru Yitaferu, Cathelijne Stoof and Tammo S. Steenhuis at the Nile Basin Development Challenge (NBDC) Science Workshop–2013, Addis Ababa, Ethiopia, 9 – 10 July 2013
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বাংলাদেশ অর্থনৈতিক সমীক্ষা (Economic Review) ২০২৪ UJS App.pdf
Pride Month Slides 2024 David Douglas School District
Pride Month Slides 2024 David Douglas School District
Chapter 4 - Islamic Financial Institutions in Malaysia.pptx
Chapter 4 - Islamic Financial Institutions in Malaysia.pptx
Study of Chemical and Physical Properties and the Soil Sorption of Metolachlor and Carbofuran in Three Tropical Soils
- 1. Study of Chemical and Physical Properties and the Soil Sorption of Metolachlor and Carbofuran in Three Tropical Soils Jos é A. Dumas, Peter Nkedi-Kizza and Rafael Montalvo-Zapata
- 4. Humic acid-pesticide interaction Van der Waals and electrostatic interactions. How pesticide’s sorption occurs?
- 7. Hydrogeographic (HP) map of Puerto Rico North Coastal Limestone Aquifer South Coastal Alluvial Aquifer Chemico-pharmaceutical industries High urban development
- 8. Sampling areas and Soil Series Selected Tiburones Catano Aguilita
- 10. Soil properties CCE-Calcium carbonate equivalen; WHC-Water holding capacityt Soil Series pH CCE % Clay % Silt % Sand % WHC Aguilita 8.18 63.13 47.68 22.88 29.44 45 Cata ñ o 8.60 14.01 4.56 3.36 92.08 22 Tiburones 4.07 0.84 17.44 2.84 79.72 38
- 11. Organic matter properties HA-humic acid; FA-fulvic acid; 1 mg/50g soil; OC-organic carbon Soil Series HA mg 1 FA mg 1 HA/FA OC % Fat mg/kg OC Aguilita 600 590 1.0 4.08 950 Cata ñ o 25 84 0.3 0.53 161 Tiburones 990 490 2.0 7.93 2730
- 12. Fulvic and Humic acid properties E4/E6-absorbance ratio at 400 and 600 nm Soil Series E4/E6 Total Acidity (meq/g humic) HA FA HA FA Aguilita 5.5 10.0 1.4 2.8 Cata ñ o 4.9 6.5 ND 0.44 Tiburones 3.2 10.4 1.6 3.2
- 13. Potentiometric tiltration of Fulvic acid -COOH Phenolic OH
- 14. Potentiometric tiltration of Humic acid Non clearly defined acidic group protons
- 15. Derivative spectrum of Humic acid (100ug/mL) Aguilita Catano Tiburones
- 16. Derivative spectrum of Fulvic acid (100ug/mL) Aguilita Catano Tiburones
- 17. Main functional groups of Fulvic acids ( β -humus) identified by ATR-IR Aguiliita Catano Tiburones Benzene rings Hydroxy groups Aromatic C-H Si-H C=O C-O
- 18. Main functional groups of Humic acids identified by ATR-IR Aguiliita Catano Tiburones
- 19. Structure of pesticides Metolachlor Carbofuran Chloroacetanilide Carbamate
- 20. Chemical and physical properties of Metolachlor and Carbofuran MET-metolachlor; CAR-carbofuran Name Family Sol. (mg/L) Koc (mL/g) Kow pK b MET cloroacetanilide 530 200 2820 NA CAR carbamate 700 14-160 17-26 NA
- 21. Sorption isotherms for Metolachlor
- 22. Soil sorption coefficient Soil Series Metolachlor Kd Aguilita 3.6 Cata ñ o 1.2 Tiburones 9.3