Agricultural use of three (sugar-beet) vinasse composts: effect on crops and chemical properties of a Cambisol soil in the Guadalquivir river valley (SW Spain)

2001 ◽  
Vol 84 (1) ◽  
pp. 55-65 ◽  
Author(s):  
Engracia Madejón ◽  
Rafael López ◽  
José M Murillo ◽  
Francisco Cabrera
Author(s):  
Juliany Barbosa de Pinho ◽  
Aloisio Bianchini ◽  
Pedro Silvério Xavier Pereira ◽  
Letycia Cunha Nunes ◽  
Rodrigo Fernandes Daros ◽  
...  

From the pyrolysis process, biochar is a carbon rich and recalcitrant organic material with potential for long term carbon sequestration because of its aromatic structure. However, the physical and chemical properties of the biochar vary due to the diversity of raw material and the conditions of production. The present study aimed to evaluate the biochar from the sugarcane bagasse at different temperatures and under two conditions of pyrolysis. The biochar was produced at two final temperatures 200°C (1 hour); 250°C (1h) and 250°C (2h), with pyrolysis of an oxidizing and non-oxidizing atmosphere for both. PH, cation exchange capacity (CTC), carbon content (C), Nitrogen (N), hydrogen (H), H:C, C:N and ash ratios were evaluated. The contents of C, H, N and the atomic ratios H:C and C:N were higher in Biochar produced in a non-oxidizing atmosphere (BNO). However, the content of ash, pH and CTC were higher in Biochar produced in oxidizing atmospheres (BO). One can conclude the direct influence of the pyrolysis condition.


2021 ◽  
Author(s):  
Maha Aljabri ◽  
Saif Alharbi ◽  
Fekry M. Ismaeil ◽  
Jiana Chen ◽  
Salah Fatouh Abou-Elwafa

Abstract Soil salinity adversely affects the growth, yield, and quality parameters of sugar beet, leading to a reduction in root and sugar yields. Improving the physical and chemical properties of salt-affected soils is essential for sustainable cultivation and sugar beet production. A field experiment was conducted at t the Delta Sugar Company Research Farm, El-Hamool, Kafr El- Sheikh, Egypt to evaluate the response of sugar beet to the application of beet sugar filter cake treated with sulfuric and phosphoric acid-treated, phosphogypsum (PG), desaline, humic acid and molasses under saline soil conditions. The application of treated filter cake enhanced root length, diameter and leaf area. The application of molasses enhanced root length, diameter and leaf area as well. Application of molasses increased sugar content and root yield. The application of either treated filter cake or molasses produced the highest recoverable sugar yield. Linear regression analysis revealed that the root yield, quality index and recoverable sugar yield increased in response to the increased availability of either Ca2+ and K content in the soil which increases in response to the application of soil amendments and molasses. The application of treated beet sugar filter cake and molasses increased the calcium, magnesium and potassium availability in the soil. Treated filter cake is a promising organic soil amendment that enhanced the yield by 29%, and yield-related traits of sugar beet by improving the physical and chemical properties of the soil.


2018 ◽  
Vol 46 (4) ◽  
pp. 83-93 ◽  
Author(s):  
D. A. Gavrilov ◽  
M/ K. Khabdulina

Results of an interdisciplinary (archaeological and pedological) study of the ancient soils in the Bozok district (8th to 15th centuries) are presented. Part of the district is a complex irrigation system dating to the 11th to 12th centuries. To detect the traces of ancient irrigation, surface and buried soils were studied. Results of the morphogenetic analysis, as well as the assessment of physical and chemical properties of soils and their microbiomorph composition, suggest that soils relating to various functional parts of the irrigation system within the same catena indicate agricultural use. The multivariate analysis revealed significant differences between irrigated and non-irrigated soils, and a high correlation between the former and the presence of diatom algae, sponge spicules, and phytoliths of Phragmites spp. in the microbiomorph fraction. The observed differences in the microbiomorph concentrations between soils in subordinate catena positions confirm the impact of irrigation on the transformation of the microbiomorph profiles of the ancient irrigated soils in terms of relief. The taxonomy of the buried and anthropogenically transformed surface soils at the type level suggest that over the last 900 years the pedogenic conditions changed from automorphic humus-accumulative to more semihydromorphic solonetzic ones.


Author(s):  
О. I. Санжаревська

У статті досліджено фізико-хімічні показникиґрунту, забрудненого нафтогазоконденсатноюсумішшю різної давності: 6 місяців, 12 місяців, 36місяців та проведено його порівняння з ґрунтом, не-забрудненим нафтопродуктами на прикладі Полтав-ської області. Визначено головні негативні наслідкивпливу газоконденсату на ґрунтові екосистеми йзроблені висновки про придатність ґрунту для сіль-ськогосподарського використання та можливі шляхийого покращання. Практична значимість роботиполягає в розробці концептуальних засад поліпшеннястану ґрунтів Полтавського регіону, зокрема за ра-хунок фітомеліоративних заходів; обґрунтуваннішляхи локалізації газоконденсатних виливів і віднов-лення ґрунтів після газоконденсатних забруднень. Poltava Region is one of the leading oil and gas extraction regions of Ukraine. Almost 40 % of Ukrainian gas and every fifth ton of oil with condensate are extracted from depths of Poltava Region, which have unique fields of fuel and power as well as mineral resources. However, during extraction, transportation and processing of oil and gas condensate, oil spills occur, which is associated with accidents and unauthorized ties-in. The result is polluted soil, ground and surface water. We have identified the major negative results of influence on the soil ecosystem gas condensate. It was experimentally determined that the basic physical and chemical properties of soil contaminated with a mixture of gas condensate and comparison with uncontaminated soil mineral oil in Poltava. Conclusions were made concerning the suitability of the soil for agricultural use and possible ways to improve it. There were appeared some problems that should be solved for improving soil Poltava.


Agronomy ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 40
Author(s):  
Claudia Lara-Espinoza ◽  
Jose A. Sanchez-Villegas ◽  
Yolanda Lopez-Franco ◽  
Elizabeth Carvajal-Millan ◽  
Rosalba Troncoso-Rojas ◽  
...  

Sugar beet is a potential source of pectin, competitive with traditional sources, that has recently acquired great relevance for its interesting covalent gelling and applications in food and biomedical industries. Pectins from three Sugar beet (Beta vulgaris L.) commercial cultivars (Cadet, Coronado large, and SV MEI) were grown under irrigated desertic conditions and the influence of cultivar, on pectin yield, composition, physicochemical and gelling characteristics was investigated. The composition and chemical properties of pectin from the three cultivars were in general, statistically different, especially in the Syngenta Cadet cultivar, presenting higher protein (10.3%), neutral sugars (21.6%), galacturonic acid (55%) and ferulic acid (5.5 mg/g) content, which are important parameters for gel formation. All pectins gelled via oxidative coupling and the main ferulic acid dimers found were 8-5′ and 8-O-4′. Pectin from Cadet cultivar formed gels with higher hardness (6.65 N) and adhesiveness (12.2 N) values than the other two varieties. The results indicate that pectin composition is affected by the sugar beet cultivars reported herein, especially in ferulic acid content, which confer the covalent gelling capability. Sugar beet cultivars grown under desert conditions could be a source of gelling ferulated pectins for the food industry, as valuable as those obtained in temperate conditions.


1966 ◽  
Vol 24 ◽  
pp. 101-110
Author(s):  
W. Iwanowska

In connection with the spectrophotometric study of population-type characteristics of various kinds of stars, a statistical analysis of kinematical and distribution parameters of the same stars is performed at the Toruń Observatory. This has a twofold purpose: first, to provide a practical guide in selecting stars for observing programmes, second, to contribute to the understanding of relations existing between the physical and chemical properties of stars and their kinematics and distribution in the Galaxy.


Author(s):  
O. Popoola ◽  
A.H. Heuer ◽  
P. Pirouz

The addition of fibres or particles (TiB2, SiC etc.) into TiAl intermetallic alloys could increase their toughness without compromising their good high temperature mechanical and chemical properties. This paper briefly discribes the microstructure developed by a TiAl/TiB2 composite material fabricated with the XD™ process and forged at 960°C.The specimens for transmission electron microscopy (TEM) were prepared in the usual way (i.e. diamond polishing and argon ion beam thinning) and examined on a JEOL 4000EX for microstucture and on a Philips 400T equipped with a SiLi detector for microanalyses.The matrix was predominantly γ (TiAl with L10 structure) and α2(TisAl with DO 19 structure) phases with various morphologies shown in figure 1.


Author(s):  
Mehmet Sarikaya ◽  
Ilhan A. Aksay

Biomimetics involves investigation of structure, function, and methods of synthesis of biological composite materials. The goal is to apply this information to the design and synthesis of materials for engineering applications.Properties of engineering materials are structure sensitive through the whole spectrum of dimensions from nanometer to macro scale. The goal in designing and processing of technological materials, therefore, is to control microstructural evolution at each of these dimensions so as to achieve predictable physical and chemical properties. Control at each successive level of dimension, however, is a major challenge as is the retention of integrity between successive levels. Engineering materials are rarely fabricated to achieve more than a few of the desired properties and the synthesis techniques usually involve high temperature or low pressure conditions that are energy inefficient and environmentally damaging.In contrast to human-made materials, organisms synthesize composites whose intricate structures are more controlled at each scale and hierarchical order.


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