Humic Acid–Like Substances Extracted from Compost Improve Fe Nutrition of Lemon Grown on Calcareous Soil: An Environmentally Safe Approach

2015 ◽  
Vol 46 (8) ◽  
pp. 954-964
Author(s):  
Tarek G. Ammari ◽  
Yasin Al-Zu’bi ◽  
Samih Abubaker ◽  
Issam Qrunfleh
Keyword(s):  
Humic Acid ◽  
Calcareous Soil ◽  
Environmentally Safe ◽  
Fe Nutrition ◽  
Safe Approach

scholarly journals Production of Pectin-Cellulose Biofilms: A New Approach for Citrus Waste Recycling

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Veronika Bátori ◽  
Mostafa Jabbari ◽  
Dan Åkesson ◽  
Patrik R. Lennartsson ◽  
Mohammad J. Taherzadeh ◽  
...  
Keyword(s):  
Food Packaging ◽  
Waste Recycling ◽  
Drying Methods ◽  
Sem Images ◽  
New Approach ◽  
Environmentally Safe ◽  
Orange Waste ◽  
Citrus Waste ◽  
Cellulosic Fibres ◽  
Safe Approach

While citrus waste is abundantly generated, the disposal methods used today remain unsatisfactory: they can be deleterious for ruminants, can cause soil salinity, or are not economically feasible; yet citrus waste consists of various valuable polymers. This paper introduces a novel environmentally safe approach that utilizes citrus waste polymers as a biobased and biodegradable film, for example, for food packaging. Orange waste has been investigated for biofilm production, using the gelling ability of pectin and the strength of cellulosic fibres. A casting method was used to form a film from the previously washed, dried, and milled orange waste. Two film-drying methods, a laboratory oven and an incubator shaker, were compared. FE-SEM images confirmed a smoother film morphology when the incubator shaker was used for drying. The tensile strength of the films was 31.67 ± 4.21 and 34.76 ± 2.64 MPa, respectively, for the oven-dried and incubator-dried films, which is within the range of different commodity plastics. Additionally, biodegradability of the films was confirmed under anaerobic conditions. Films showed an opaque appearance with yellowish colour.

Mobility and distribution of zinc forms in columns of an acid, a neutral, and a calcareous soil treated with three organic zinc complexes under laboratory conditions

Soil Research ◽  
2002 ◽  
Vol 40 (5) ◽  
pp. 791 ◽  
Author(s):  
J. Novillo ◽  
A. Obrador ◽  
L. M. López-Valdivia ◽  
J. M. Alvarez
Keyword(s):  
Humic Acid ◽  
Calcareous Soil ◽  
Water Soluble ◽  
Soil Profiles ◽  
Sequential Fractionation ◽  
Organic Zinc ◽  
Exchangeable Fraction ◽  
Neutral Soil ◽  
Acid Nature ◽  
Extractable Zn

Three liquid zinc (Zn) fertilisers were mixed with the upper 1.5 cm of columns representing 3 different soil profiles: Aquic Haploxeralf, of an acid nature and with hydromorphic problems; Calcic Haploxeralf, of a neutral nature; and Typic Xerorthents, of a calcareous nature. They were periodically irrigated for 60 days. Most of the applied Zn remained in the top of the soil when it was added as Zn-lignosulfonate plus EDTA or Zn-2-hydroxy-1,2,3-propanotricarboxilate. When Zn-EDTA plus fulvic and humic acid fertiliser was applied, Zn migrated and distributed throughout the soil resulting in losses of Zn by leaching of 2.29% in acidic soil, 27.36% in neutral soil, and 10.5% in calcareous soil of the Zn applied. The 3 fertilisers produce sufficient concentrations of the bioavailable Zn forms in the Ap horizons (DTPA and Mehlich-3 extractable Zn) for the cultivation of different plants. In the calcareous soil, which contained free CaCO3, the amount of Zn extracted by Mehlich-3 was higher than in soils with no free CaCO3. Distribution of Zn in the soil was studied at the beginning and end of the experiment by means of one sequential fractionation and showed that added Zn remained in more labile fractions for uptake by plants in the acid and neutral soils when compared with the control. When Zn was added to calcareous soil, no amount of Zn was detected in the water-soluble plus exchangeable fraction at the end of experiment for any Zn fertiliser source.

scholarly journals Application of Single Superphosphate with Humic Acid Improves the Growth, Yield and Phosphorus Uptake of Wheat (Triticum aestivum L.) in Calcareous Soil

Agronomy ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1224 ◽  
Author(s):  
Muhammad Izhar Shafi ◽  
Muhammad Adnan ◽  
Shah Fahad ◽  
Fazli Wahid ◽  
Ahsan Khan ◽  
...  
Keyword(s):  
Humic Acid ◽  
Calcareous Soil ◽  
Block Design ◽  
Calcareous Soils ◽  
Growth Yield ◽  
P Uptake ◽  
Water Soluble ◽  
P Availability ◽  
Single Superphosphate ◽  
P Fertilizers

In calcareous soil, the significant portion of applied phosphorus (P) fertilizers is adsorbed on the calcite surface and becomes unavailable to plants. Addition of organic amendments with chemical fertilizers can be helpful in releasing the absorbed nutrients from these surfaces. To check out this problem, a field experiment was conducted for two years to determine the effect of P fertilizers and humic acid (HA) in enhancing P availability in soil and their ultimate effect on growth, yield and P uptake of wheat in calcareous soils. The experiment was comprised of five levels of P (0, 45, 67.5, 90 and 112.5 kg P2O5 ha−1) as a single superphosphate (SSP) and 2 levels of locally produced humic acid (with and without HA) arranged in a two factorial randomized complete block design (RCBD) with three replications. Wheat plant height, spike length, number of grains per spike, 1000-grain weight, grain, straw and biological yield were significantly improved by the addition of HA with SSP. Very often, the performance of 67.5 kg P2O5 ha−1 with HA were either similar or better than 90 or even 112.5 kg P2O5 ha−1 applied without HA. Post-harvest soil organic matter, AB-DTPA extractable and water-soluble P, plant P concentration and its uptake were also significantly improved by the addition of HA with SSP compared to sole SSP application. It was evident that P efficiency could be increased with HA addition and it has the potential to improve crop yield and plants P uptake in calcareous soils.

Sterilization Techniques for Soil Remediation and Agriculture Based on Ozone and AOP

2010 ◽  
Vol 13 (2) ◽  
Author(s):  
Joanna Pawłat ◽  
Henryka Danuta Stryczewska ◽  
Kenji Ebihara
Keyword(s):  
Escherichia Coli ◽  
Humic Acid ◽  
Low Temperature ◽  
Soil Remediation ◽  
Atmospheric Pressure ◽  
Research Groups ◽  
Promising Alternative ◽  
Soil Sterilization ◽  
Atmospheric Pressure Plasmas ◽  
Environmentally Safe

AbstractThe sterilizing and remediation effects of the non-equilibrium atmospheric pressure plasmas are known for decades. Low temperature atmospheric pressure plasmas are considered as a promising alternative to conventional sterilizing methods, which have numerous drawbacks. Influence of various parameters such as discharge regimes, reactor geometries, gases, etc., on formation and effectiveness of plasma were investigated by many research groups. This paper presents the review of recently developed, environmentally safe technologies applied for the agriculture and soil remediation. The results of ozone soil sterilization and ozone influence on the DNA structure of Escherichia coli are described. The results of oxidants’ influence on humic acid are presented.

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