Factors affecting potassium fixation in Argentine agricultural soils

2001 ◽  
Vol 32 (17-18) ◽  
pp. 2679-2690 ◽  
Author(s):  
M. E. Conti ◽  
A. M. de la Horra ◽  
D. Effron ◽  
D. Zourarakis
Keyword(s):  
Agricultural Soils ◽  
Factors Affecting ◽  
Potassium Fixation

CO2 fluxes and carbon balance of an agricultural grassland in southern Finland

2020 ◽  
Author(s):  
Laura Heimsch ◽  
Annalea Lohila ◽  
Liisa Kulmala ◽  
Juha-Pekka Tuovinen ◽  
Mika Korkiakoski ◽  
...  
Keyword(s):  
Climate Change ◽  
Organic Matter ◽  
Soil Organic Matter ◽  
Carbon Balance ◽  
Management Practices ◽  
Agricultural Soils ◽  
Weather Conditions ◽  
Factors Affecting ◽  
Management Procedures ◽  
Mitigate Climate Change

<p>Agriculture is globally a significant source of carbon emissions to the atmosphere. Main causes for these high emissions are conventional intensive management practices which include such as frequent ploughing, monocropping and high use of agrochemicals. These practices contribute to the loss of biodiversity and soil organic matter, as well as to the CO<sub>2</sub> emissions from land use. Recently, it has been recognised that agriculture functioning on the basis of regenerative practices is one of the most potential tools to mitigate climate change.</p><p>It is well known that topsoil layer and especially humus-rich soils can store more carbon than atmosphere and vegetation together. Therefore, increasing the amount of soil organic matter in the agroecosystems, by applying enhanced management practices such as reduced tillage, high biodiversity and cover cropping, agricultural soils would not only help to mitigate climate change but also to restore soil quality and fertility. To understand the carbon dynamics on different agricultural sites, factors affecting and comprising the carbon balance, and to verify soil carbon and ecosystem models, continuous long-term monitoring of the GHG fluxes is essential at such managed ecosystems. Here we present results from a new eddy covariance (EC) flux study site located in southern Finland.</p><p>Continuous CO<sub>2</sub> flux measurements using the EC method have been conducted at Qvidja farm on mineral (clay) soil forage grassland in Parainen, southern Finland (60.29550°N, 22.39281°E) since the spring 2018. Based on the flux and biomass data, the annual carbon balance was estimated to be negative, i.e. the site acted as an overall sink of carbon even in the dry and hot year 2018. However, the seasonal CO<sub>2</sub> fluxes were greatly dependent on weather conditions and management procedures. Results from 2019 show that the growing season accompanied with more mature and dense grass, a bit higher precipitation and lower temperatures, as well as higher cutting height was more favorable for carbon uptake in Qvidja as compared to year 2018.</p>

scholarly journals Pseudomonas Biocontrol Agents of Soilborne Pathogens: Looking Back Over 30 Years

2007 ◽  
Vol 97 (2) ◽  
pp. 250-256 ◽  
Author(s):  
David M. Weller
Keyword(s):  
Agricultural Soils ◽  
Abiotic Factors ◽  
Biocontrol Agents ◽  
Future Research ◽  
Soilborne Pathogens ◽  
Factors Affecting ◽  
Tremendous Progress ◽  
Pathogen Suppression ◽  
Rhizosphere Competence ◽  
Made In

Pseudomonas spp. are ubiquitous bacteria in agricultural soils and have many traits that make them well suited as biocontrol agents of soilborne pathogens. Tremendous progress has been made in characterizing the process of root colonization by pseudomonads, the biotic and abiotic factors affecting colonization, bacterial traits and genes contributing to rhizosphere competence, and the mechanisms of pathogen suppression. This review looks back over the last 30 years of Pseudomonas biocontrol research and highlights key studies, strains, and findings that have had significant impact on shaping our current understanding of biological control by bacteria and the direction of future research.

Factors affecting aggregate instability of Greek agricultural soils

1998 ◽  
Vol 29 (9-10) ◽  
pp. 1239-1251 ◽  
Author(s):  
D. G. Dimoyiannis ◽  
C. D. Tsadilas ◽  
S. Valmis
Keyword(s):  
Agricultural Soils ◽  
Factors Affecting

scholarly journals FACTORS AFFECTING THE DEGRADATION OF PHARMACEUTICALS IN AGRICULTURAL SOILS

2009 ◽  
Vol 28 (12) ◽  
pp. 2546 ◽  
Author(s):  
Sara C. Monteiro ◽  
Alistair B.A. Boxall
Keyword(s):  
Agricultural Soils ◽  
Factors Affecting

Factors affecting the adoption of conservation tillage on clay soils in southwestern Ontario, Canada

2000 ◽  
Vol 15 (4) ◽  
pp. 181-188 ◽  
Author(s):  
Johanna Wandel ◽  
John Smithers
Keyword(s):  
Agricultural Soils ◽  
Conservation Tillage ◽  
Farming System ◽  
Farm Size ◽  
Specific Information ◽  
Tillage Systems ◽  
Factors Affecting ◽  
Farming Communities ◽  
Attitudinal Factors ◽  
Crop Agriculture

AbstractDespite significant progress in promoting the wider use of conservation tillage systems among farmers in Ontario, recent evidence suggests that adoption levels remain low overall, and especially low in those areas where agricultural soils are predominantly clay-based. Given the prominence of cash-crop agriculture in these regions, there is continuing interest in understanding the reasons for non-adoption in these areas, and in identifying strategies that would result in greater use of conservation tillage systems. This paper reports on an empirical analysis of conservation tillage adoption among a sample of 50 farmers in Lambton County, Ontario. The purpose of the research was to document and explain variations in the use of conservation tillage, and to assess prospects for increasing the adoption of this technology. A statistical analysis revealed that personal and attitudinal factors were largely unrelated to decisions concerning the use of conservation tillage. Instead, significant factors related to the scale of the farm operation as reflected in both farm size and sales, and in the nature of the farming system itself Subsequent analysis of farmers' stated motivations and perceived barriers suggests that inertia and uncertainty act as impediments to adoption. The findings point to the need for site-specific and farm system-specific information on the performance of this technology, and to the importance of benefits that are readily observable and communicable within local farming communities.

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