Sorption of the Herbicides Isoxaben and Oryzalin to Soils and Container Media

Abstract The herbicides isoxaben (Gallery) and oryzalin (Surflan) are commonly used to prevent weed emergence around ornamental plants in nurseries and landscapes. Saturated batch experiments were conducted in the laboratory to generate equilibrium sorption isotherms for these herbicides in soils and container media. Soils consisted of [A] a sandy loam containing 1.24% organic matter (by wt) after sieving, and [B] a silt loam containing 1.36% organic matter (by wt) after sieving. Container media obtained from nurseries consisted of [C] a mixture of 50% peat and 50% sand (by vol) containing 18.5% organic matter (by wt) after sieving, and [D] a mixture of 70% bark, 25% peat, and 5% fine stone (by vol) containing 34.9% organic matter (by wt) after sieving. Sorption isotherms were generated from these data. Based on sorption coefficients (Kd, Kf), container mix D sorbed both herbicides to a much greater extent than did the other substrates. Oryzalin sorption was greater than isoxaben sorption in each soil and container mix. For oryzalin, organic carbon partition coefficient (Koc) values in the soils were greater than those in the container mixes. Compositional differences in organic matter between soils and container media may account for differences in herbicide sorption in these media.

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Influence of Physicochemical Characteristics of Bean Crop Soil in Trichoderma spp. Development

Agronomy ◽

10.3390/agronomy11020274 ◽

2021 ◽

Vol 11 (2) ◽

pp. 274

Author(s):

Sara Mayo-Prieto ◽

Alejandra J. Porteous-Álvarez ◽

Sergio Mezquita-García ◽

Álvaro Rodríguez-González ◽

Guzmán Carro-Huerga ◽

...

Keyword(s):

Organic Matter ◽

Sandy Loam ◽

C:N Ratio ◽

Physicochemical Characteristics ◽

Soil Parameters ◽

Physical Parameters ◽

Silt Loam ◽

Chemical Methods ◽

Trichoderma Spp ◽

Trichoderma Species

Spain has ranked 6th on the harvested bean area and 8th in bean production in the European Union (EU). The soils of this area have mixed silt loam and sandy loam texture, with moderate clay content, neutral or acidic pH, rich in organic matter and low carbonate levels, providing beans with high water absorption capacity and better organoleptic qualities after cooking. Similar to other crops, it is attacked by some phytopathogens. Hitherto, chemical methods have been used to control these organisms. However, with the Reform of the Community Agrarian Policy in the EU, the number of authorized plant protection products has been reduced to prevail food security, as well as to be sustainable in the long term, giving priority to the non-chemical methods that use biological agents, such as Trichoderma. This study aimed to investigate the relative importance of various crop soil parameters in the adaptation of Trichoderma spp. autoclaved soils (AS) and natural soils (NS) from the Protected Geographical Indication (PGI) “Alubia La Bañeza—León” that were inoculated with Trichoderma velutinum T029 and T. harzianum T059 and incubated in a culture chamber at 25 °C for 15 days. Their development was determined by quantitative PCR. Twelve soil samples were selected and analyzed from the productive zones of Astorga, La Bañeza, La Cabrera, Esla-Campos and Páramo. Their physicochemical characteristics were different by zone, as the texture of soils ranged between sandy loam and silt loam and the pH between strongly acid and slightly alkaline, as well as the organic matter (OM) concentration between low and remarkably high. Total C and N concentrations and their ratio were between medium and high in most of the soils and the rest of the micronutrients had an acceptable concentration except for Paramo’s soil. Both Trichoderma species developed better in AS than in NS, T. velutinum T029 grew better with high levels of OM, total C, ratio C:N, P, K, Fe, and Zn than T. harzianum T059 in clay soils, with the highest values of cation exchange capacity (CEC), pH, Ca, Mg and Mn. These effects were validated by Canonical Correlation Analysis (CCA), texture, particularly clay concentration, OM, electrical conductivity (EC), and pH (physical parameters) and B and Cu (soil elements) are the main factors explaining the influence in the Trichoderma development. OM, EC, C:N ratio and Cu are the main soil characteristics that influence in T. velutinum T029 development and pH in the development of T. harzianum T059.

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Adsorption and Diffusion of Dinitroaniline Herbicides in Soils

Weed Science ◽

10.1017/s0043174500044362 ◽

1979 ◽

Vol 27 (4) ◽

pp. 450-455 ◽

Cited By ~ 18

Author(s):

G. L. Jacques ◽

R. G. Harvey

Keyword(s):

Organic Matter ◽

Soil Organic Matter ◽

Water Content ◽

Soil Water ◽

The Other ◽

Silt Loam ◽

Relative Mobility ◽

Water Saturated ◽

And Diffusion ◽

Dinitroaniline Herbicides

Adsorption of benefin (N-butyl-N-ethyl-α,α,α-trifluoro-2,6-dinitro-p-toluidine), dinitramine (N4,N4-diethyl-α,α,α-trifluoro-3,5-dinitrotoluene-2,4-diamine), fluchloralin [N-(2-chloroethyl)-2,6-dinitro-N-propyl-4-(trifluoromethyl)aniline], oryzalin (3,5-dinitro-N4,N4-dipropylsulfanilamide), profluralin [N-(cyclopropylmethyl)-α,α,α-tri-fluoro-2,6-dinitro-N-propyl-p-toluidine], and trifluralin (α,α,α-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine) was studied in 10 Wisconsin soils. Ratios of the quantity of each herbicide adsorbed and quantities remaining in the soil solution at equilibrium (Kd value) on a Piano silt loam (Typic Argiudoll fine-silty, mixed, mesic) remained relatively constant over a range of concentrations. Herbicide adsorption by the soils was related more closely to soil organic matter than to the other soil chemical and physical properties. Diffusion of the herbicides in Piano silt loam was affected by soil water. Diffusion of trifluralin, profluralin and benefin decreased as soil water increased. Diffusion of dinitramine and fluchloralin did not change significantly with change in water content. Diffusion of oryzalin increased at the highest soil water content. None of the herbicides moved more than 10 mm in the soil during a 17-day period. In unsaturated Piano silt loam, relative mobility of the herbicides was trifluralin ≥benefin>profluralin>fluchloralin>dinitramine≥oryzalin. Oryzalin reached highest mobility in water-saturated soil.

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Particulate organic matter in soil under different management systems in the Brazilian Cerrado

Soil Research ◽

10.1071/sr12196 ◽

2012 ◽

Vol 50 (8) ◽

pp. 685 ◽

Cited By ~ 12

Author(s):

Arcângelo Loss ◽

Marcos Gervasio Pereira ◽

Adriano Perin ◽

Fernando Silva Coutinho ◽

Lúcia Helena Cunha dos Anjos

Keyword(s):

Organic Matter ◽

Soil Organic Matter ◽

Organic Carbon ◽

The Other ◽

Management Systems ◽

Soil Conditions ◽

Brazilian Cerrado ◽

Cerrado Vegetation ◽

No Till ◽

Planting System

The combination of the no-till planting system (NTS) and pasture (e.g. brachiaria grass, Urochloa sp.) for livestock production constitutes a crop–livestock integration (CLI) system. CLI systems significantly increase the total organic carbon (TOC) content of soil and the particulate organic carbon (POC) of soil organic matter (SOM). The present study evaluated TOC and the granulometric fractions of SOM under different management systems in a Cerrado area in the state of Goiás. Two areas applying crop rotation were evaluated, one using CLI (corn/brachiaria grass/bean/cotton/soybean planted sequentially) and the other NTS (sunflower/pearl millet/soybean/corn planted sequentially). A third area covered with natural Cerrado vegetation (Cerradão) served as a reference to determine original soil conditions. Soil was randomly sampled at 0–5, 5–10, 10–20, and 20–40 cm. The TOC, POC, and mineral-associated organic carbon (MOC) were assessed, and POC and MOC stocks calculated. The CLI system resulted in greater TOC levels than NTS (0–5, 5–10, and 10–20 cm). Compared with the Cerradão, CLI areas exhibited higher stocks of TOC (at 5–10 and 10–20 cm) and POC (at 0–40 cm). Results obtained for TOC and POC fractions show that land management with CLI was more efficient in increasing SOM than NTS. Moreover, when compared with NTS, the CLI system provided better POC stratification.

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Chemical and physical fractions of soil organic matter under various management regimes in Roraima, Brazil

Semina Ciências Agrárias ◽

10.5433/1679-0359.2017v38n4supl1p2419 ◽

2017 ◽

Vol 38 (4Supl1) ◽

pp. 2419

Author(s):

Marden Daniel Espinoza Guardiola ◽

José Frutuoso Vale Júnior ◽

Edmilson Evangelista da Silva ◽

Celeste Queiroz Rossi ◽

Marcos Gervasio Pereira

Keyword(s):

Organic Matter ◽

Soil Organic Matter ◽

Organic Carbon ◽

Chemical Elements ◽

The Other ◽

Management Systems ◽

Natural Fertility ◽

Chemical Attributes ◽

Pasture Area ◽

Physical And Chemical

The crop-livestock integration (CLI) and crop-livestock-forest integration (CLFI) management systems, have been shown to be viable approaches for increasing carbon sequestration in soils, resulting in the improvement of physical and chemical soil attributes. The objective of this study was to evaluate the chemical attributes and organic matter in soils under Natural Forest (NF) converted to different uses and managed differently: rotational pasture area (PAST), crop-livestock integration (CLI), and crop-livestock-forest integration (CLIF). The research was conducted at the São Paulo farm, in Iracema, located in the south-central region of the state of Roraima, Brazil. The studied soil type was classified as Ultisol. Soil samples were taken by opening ditches and examining layers at 0.1-m depth intervals from surface to 0.60-m depth. Total organic carbon (TOC), chemical and granulometric fractionation of soil organic matter (SOM), oxidizable fractions, and light organic matter in water were analyzed. Our results showed low levels of the analyzed chemical elements, a characteristic of a soil with low natural fertility. This matches conditions inherent in source material, weathered by high rainfall, a warm and humid climate, and flat topographic relief. In the 0-0.1 m layer, the PAST and CLI systems had the highest TOC contents relative to the other systems studied. At other depths, there were no statistical differences among TOC levels. The highest concentration of C in the particulate fraction (POC) was noted in the surface layer in all management systems. The pasture system had the highest concentration POC in the top 0.10 m. Our results also showed that the upper 0.10 m of soil in NF contained the lowest content of organic carbon associated with mineral (MOC) relative to the managed agrosystems. In addition, humin provided the largest contribution to SOM in all evaluated management systems. The crop-livestock integration (CLI) and crop-livestock integration forest (CLIF) systems, emerged as a strong alternative to carbon incorporation and subsequently the improvement of physical and chemical soil attributes. The objective of this work to evaluate the chemical attributes and organic matter in soils under Natural forest (NF) converted into different use and management systems: pasture (PAST), crop-livestock Integration (CLI) and crop-livestock Integration forest (CLIF). The research was conducted at São Paulo farm in Iracema, located in the Center-South region of the State of Roraima, Brazil. The soil studied was classified as Argissolo Amarelo Distrófico. The samples were taken by the opening of trenches in layers of 0-0.10, 0.10- 0.20, 0.20- 0.40, and 0.40-0.60 m depth. Total organic carbon (TOC), chemical and granulometric fractionation of soil organic matter (SOM), oxidizable fractions and organic matter in water were analyzed. The results showed low levels of the analyzed chemical elements which characterizes soils with low natural fertility, which matches the conditions of the source material, high rainfall and regional temperature, as well as the flat local relief. In the 0-0.1 m layer, the PAST and CLI systems had the highest TOC contents when compared to the other systems studied, in the other depths there were no statistical differences between the TOC levels. The highest amount of C in the particulate fraction (COp) was verified in the surface layer in all evaluated management systems. The pasture area was the system with the greatest contribution of COp to the depth of 0-0.0 m. In relation to the carbon content associated with minerals (COam), the results showed that the depth of 0-0.05 m NF area presented the lowest levels when compared to the other systems. Regarding the humic substances, there was a larger contribution of humin in all evaluated systems.

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Short-Term Effects of Fertilization on Dissolved Organic Matter in Soil Leachate

Water ◽

10.3390/w12061617 ◽

2020 ◽

Vol 12 (6) ◽

pp. 1617 ◽

Cited By ~ 1

Author(s):

Alexandra Tiefenbacher ◽

Gabriele Weigelhofer ◽

Andreas Klik ◽

Matthias Pucher ◽

Jakob Santner ◽

...

Keyword(s):

Organic Matter ◽

Dissolved Organic Matter ◽

Sandy Loam ◽

Organic Fertilizer ◽

Molecular Size ◽

Pig Slurry ◽

Silt Loam ◽

Short Term ◽

Soil Leachate ◽

Calcium Ammonium Nitrate

Besides the importance of dissolved organic matter (DOM) in soil biogeochemical processes, there is still a debate on how agricultural intensification affects the leaching of terrestrial DOM into adjacent aquatic ecosystems. In order to close this linkage, we conducted a short-term (45 day) lysimeter experiment with silt loam and sandy loam undisturbed/intact soil cores. Mineral (calcium ammonium nitrate) or organic (pig slurry) fertilizer was applied on the soil surface with a concentration equivalent to 130 kg N ha−1. On average, amounts of leached DOC over 45 days ranged between 20.4 mg (silt loam, mineral fertilizer) and 34.4 mg (sandy loam, organic fertilizer). Both, mineral and organic fertilization of a silt loam reduced concentration of dissolved organic carbon (DOC) in the leachate and shifted its composition towards a microbial-like signature (BIX) with a higher aromaticity (Fi) and a lower molecular size (E2:E3). However, in sandy loam only mineral fertilization affected organic matter leaching. There, lowered DOC concentrations with a smaller molecular size (E2:E3) could be detected. The overall effect of fertilization on DOC leaching and DOM composition was interrelated with soil texture and limited to first 12 days. Our results highlight the need for management measures, which prevent or reduce fast flow paths leading soil water directly into aquatic systems, such as surface flow, fast subsurface flow, or drainage water.

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The influence of surfactant and organic matter content on wetting pattern of different non-water repellent soils

Soil Research ◽

10.1071/sr15153 ◽

2016 ◽

Vol 54 (7) ◽

pp. 880

Author(s):

Mohammad Reza Chaichi ◽

Marcus Turcios ◽

Mina Rostamza

Keyword(s):

Organic Matter ◽

Sandy Loam ◽

Organic Matter Content ◽

Matter Content ◽

Water Infiltration ◽

Water Repellent ◽

Ionic Surfactant ◽

Silt Loam ◽

Wetted Area ◽

Wetting Pattern

Non-ionic surfactants have been well researched as a tool to ameliorate water repellent conditions. However, few studies have evaluated the risks and benefits of non-ionic surfactant applications in wettable soil. The objective of this study was to evaluate the effects of a surfactant in modifying the wetting pattern in soils of different textures and organic matter contents. The experimental treatments consisted of (1) four different soil textures including sandy, sandy loam, sandy clay loam and silt loam, (2) four different organic matter contents (0.2, 0.7, 1.2 and 1.7% by weight), and (3) irrigation water treatments with or without surfactant (IrrigAid Gold). The experiment was carried out in Plexiglas boxes with one drip emitter under the soil surface. The results demonstrated the superiority of surfactant application on increasing water distribution in the soil profile for all soil textural classes. Silt loam texture had the highest side wetted area and wetting depth 45min after the initiation of irrigation. Upward capillary water movement and top wetted area significantly decreased in the surfactant treatment across all soil textures except in sandy soil. As organic matter content increased, top wetted area decreased. These findings clarified the potential ability of surfactant in increasing water infiltration in non-repellent soil in an in vitro system.

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FERTILIZATION VALUE OF THREE ORGANIC RESIDUES AS AN AMENDMENT TO MEDIA USED TO PRODUCE CONTAINER-GROWN WOODY ORNAMENTAL PLANTS

HortScience ◽

10.21273/hortsci.30.2.192d ◽

1995 ◽

Vol 30 (2) ◽

pp. 192d-192

Author(s):

Mondher Bouden ◽

Jaaues-Andre Rioux ◽

Isabelle Duchesne

Keyword(s):

Organic Matter ◽

Ornamental Plants ◽

Mineral Elements ◽

The Other ◽

Organic Residue ◽

Organic Residues ◽

Sewage Sludges ◽

Physocarpus Opulifolius ◽

Ecological Methods ◽

Physical And Chemical

The agricultural valorization of waste, rich in organic matter and minerals, is one of the best economical and ecological methods of disposal. This study was carried out to evaluate the release of mineral elements restrained in fresh bio-filters, composted sewage sludges, and composted de-inking sludges, and their effects on growth of Physocarpus opulifolius `Nanus' produced in containers. The physical and chemical analysis of the organic residues proved that the fertilization value of composted sewage sludges was greater than the other residues. Moreover, the granular characteristics of fresh biofilters and composted de-inking sludges were finer than composted sewage sludges. Each organic residue was combined, in proportion of 10%, with peatmoss, composted conifer bark, and fine crushed gravel. The regular leaching of container medium showed that the composted sewage sludges release a higher quantity of major mineral elements. Physocarpus opulifolius `Nanus' plants were larger than those plants grown in the control substrate (without residue). The results obtained in media containing fresh bio-filters or composted de-inking sludges were similar to those obtained in the control substrate.

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CARACTERÍSTICAS GEOQUÍMICAS DE LOS SEDIMENTOS SUPERFICIALES DE LA LAGUNA LA RESTINGA, ISLA DE MARGARITA, VENEZUELA.

10.31219/osf.io/3z3qn ◽

2016 ◽

Author(s):

Juan Velásquez ◽

Arístide Márquez ◽

Ivis Fermín ◽

Fabiola López ◽

Deudedit Hernández ◽

...

Keyword(s):

Organic Matter ◽

Calcium Carbonate ◽

Organic Carbon ◽

Total Nitrogen ◽

Total Phosphorus ◽

Fine Particles ◽

Sandy Loam ◽

Aliphatic Hydrocarbons ◽

Main Body ◽

Total Organic Matter

This research aims to evaluate some chemical parameters of surface sediments of La Restinga coastal lagoon, located in Margarita Island, Nueva Esparta State, Venezuela. Using classical methodology for geochemical studies, grain size and texture of sediment percentage of organic carbon and total organic matter, as well as calcium carbonate were analyzed. Additionally, the concentrations of total nitrogen, total phosphorus and aliphatic hydrocarbons were determined. The results showed that in La Restinga lagoon sedimentary sandy texture dominate above sandy-loam and sandy-clay. The percentages of total organic carbon, total organic matter and calcium carbonate respectively varied as follows: 1.70-25.53%, 11.10-82.10% and 2.93-44.01%. Concentrations of 282.10-1571.80 mg kg-1 in total nitrogen, 419.50-2033.70 mg kg-1 in total phosphorus and 5.65-63.18 mg kg-1 for aliphatic hydrocarbons were determined. The total organic matter in the lagoon La Restinga is distributed based on the fine particles of sediment and the presence of mangroves, in turn calcium carbonate, was associated mainly to contributions from organisms with calcareous shell. The low values of the ratio NT/PT (under 5) suggest limitation of nitrogen in the ecosystem, and natural or anthropogenic enrichment of phosphorus in the sediment. The levels found of certain aliphatic hydrocarbons, are not considered as contamination levels as established by CARIPOL (1980), except in the eastern end of the main body of the lagoon. According to the points made in this study, we can infer that La Restinga Lagoon showed symptoms of degradation product of human intervention in the ecosystem.

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Removal of Natural Organic Matter (NOM) from Drinking Water Supplies by Ozone-Biofiltration

Water Science & Technology ◽

10.2166/wst.1999.0466 ◽

1999 ◽

Vol 40 (9) ◽

pp. 157-163 ◽

Cited By ~ 29

Author(s):

Raymond M. Hozalski ◽

Edward J. Bouwer ◽

Sudha Goel

Keyword(s):

Molecular Weight ◽

Organic Matter ◽

Organic Carbon ◽

Natural Organic Matter ◽

Laboratory Experiments ◽

Low Molecular Weight ◽

Batch Experiments ◽

Toc Removal ◽

High Molecular Weight Material ◽

Effects Of Temperature

Removal of natural organic matter (NOM) in biofilters can be affected by many factors including NOM characteristics, use of pre-ozonation, water temperature, and biofilter backwashing. Laboratory experiments were performed and a biofilter simulation model was developed for the purpose of evaluating the effects of each of these factors on NOM removal in biofilters. Four sources of NOM were used in this study to represent a broad spectrum of NOM types that may be encountered in water treatment. In batch experiments with raw NOM, the removal of organic carbon by biodegradation was inversely proportional to the UV absorbance (254 nm)-to-TOC ratio and directly proportional to the percentage of low molecular weight material (as determined by ultrafiltration). The extent and rate of total organic carbon (TOC) removal typically increased as ozone dose increased, but the effects were highly dependent on NOM characteristics. NOM with a higher percentage of high molecular weight material experienced the greatest enhancement in biodegradability by ozonation. The performance of laboratory-scale continuous-flow biofilters was not significantly affected by periodic backwashing, because backwashing was unable to remove large amounts of biomass from the filter media. Model simulations confirmed our experimental results and the model was used to further evaluate the effects of temperature and backwashing on biofilter performance.

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Differential Activity of Three Diphenyl Ether Herbicides

Weed Science ◽

10.1017/s0043174500033889 ◽

1977 ◽

Vol 25 (5) ◽

pp. 465-468 ◽

Cited By ~ 3

Author(s):

Omosuyi Fadayomi ◽

G.F. Warren

Keyword(s):

Organic Matter ◽

Glycine Max ◽

Direct Relationship ◽

Field Experiments ◽

Diphenyl Ether ◽

The Other ◽

Silt Loam ◽

Legume Species ◽

Grass Weed ◽

Methyl Benzene

The tolerance of four legume species to nitrofen (2,4-dichloro-phenyl-p-nitrophenyl ether), fluorodifen (p-nitrophenylα,α,α-trifluoro-2-nitro-p-tolyl ether), and oxyfluorofen [2-chloro-1-(3-ethoxy-4-nitro-phenoxy)-4-(trifluoro-methyl)benzene] was investigated both pre- and postemergence in the greenhouse. Seedlings of species that emerged most rapidly seemed to be most tolerant to preemergence herbicide applications. There was no direct relationship between preemergence and postemergence tolerance. Oxyfluorfen was found to be at least 10 times as active as the other two herbicides both pre- and postemergence. Field experiments were conducted at two locations in Indiana to test the effect of method of application on the activity and selectivity of fluorodifen and oxyfluorfen on soybean [Glycine max(L.) Merr. ‘Wayne’] and greenbean (Phaseolus vulgarisL. ‘Spartan Arrow’). Crop injury and grass weed control were reduced by incorporation of the herbicides 8 cm deep in a silt loam. Method of application did not affect the activity of the herbicides on a sandy soil low in organic matter. Soybean was more tolerant than greenbean to both herbicides when applied preemergence but oxyfluorfen was far more active than fluorodifen on both crops.

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