scholarly journals Study on Characteristics of Chemical Properties and Microbial Flora of Organic Farming Soil in Korea

2016 ◽  
Vol 24 (4) ◽  
pp. 77-83 ◽  
Author(s):  
Kwang-Lai Park ◽  
Yuko Suga ◽  
Seung-Gil Hong ◽  
Chorong Lee ◽  
Minsil Ahn ◽  
...  
Keyword(s):  
Organic Farming ◽  
Chemical Properties ◽  
Microbial Flora ◽  
Farming Soil

scholarly journals A short-term comparison of organic v. conventional agriculture in a silty loam soil using two organic amendments

2008 ◽  
Vol 146 (6) ◽  
pp. 677-687 ◽  
Author(s):  
J. F. HERENCIA ◽  
J. C. RUIZ ◽  
S. MELERO ◽  
P. A. GARCIA GALAVÍS ◽  
C. MAQUEDA
Keyword(s):  
Organic Farming ◽  
Crop Yields ◽  
Organic Amendments ◽  
Chemical Properties ◽  
Soil Nutrient ◽  
Short Term ◽  
Organic System ◽  
Conventional Agriculture ◽  
Silty Loam ◽  
Loam Soil

SUMMARYThe transition from conventional to organic farming is accompanied by changes in soil chemical properties and processes that could affect soil fertility. The organic system is very complex and the present work carries out a short-term comparison of the effects of organic and conventional agriculture on the chemical properties of a silty loam soil (Xerofluvent) located in the Guadalquivir River Valley, Seville, Spain, through a succession of five crop cycles over a 3-year period. Crop rotation and varieties were compared in a conventional system using inorganic fertilizer and two organic systems using either plant compost or manure. At the end of the study, organic farming management resulted in higher soil organic carbon (OC), N and available P, K, Fe and Zn. The available Mn and especially Cu values did not show significant differences. In general, treatment with manure resulted in more rapid increases in soil nutrient values than did plant compost, which had an effect on several crop cycles later. The present study demonstrated that the use of organic composts results in an increase in OC and the storage of nutrients, which can provide long-term fertility benefits. Nevertheless, at least 2–3 years of organic management are necessary, depending on compost characteristics, to observe significant differences. Average crop yields were 23% lower in organic crops. Nevertheless, only two crops showed statistically significant differences.

Effects of band-steaming on microbial activity and abundance in organic farming soil

2010 ◽  
Vol 137 (3-4) ◽  
pp. 223-230 ◽  
Author(s):  
Lars Elsgaard ◽  
Martin Heide Jørgensen ◽  
Susanne Elmholt
Keyword(s):  
Microbial Activity ◽  
Organic Farming ◽  
Farming Soil

Effects on Application Time of Mixed Expeller Cake fertilizer in Organic Farming Soil and Rice Yield

2017 ◽  
Vol 25 (2) ◽  
pp. 475-487 ◽  
Author(s):  
Moon, Young-Hun ◽  
◽  
Ahn, Byung-Koo ◽  
Lee, Gong-Joon ◽  
Seo, Kyoung-Won ◽  
...  
Keyword(s):  
Organic Farming ◽  
Rice Yield ◽  
Application Time ◽  
Farming Soil

scholarly journals ESTIMATION OF SOIL ORGANIC CARBON PERCENTAGE IN ORGANIC FARMING SOIL SAMPLES OF TANUKU REGION, ANDHRAPRADESH, INDIA BY WALKLEY-BLACK CHROMIC ACID WET OXIDATION METHOD

2020 ◽  
pp. 519-523
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Organic Farming ◽  
Andhra Pradesh ◽  
Chromic Acid ◽  
Soil Samples ◽  
Animal Remains ◽  
Farming Soil

The Estimation of Soil Organic Carbon (SOC) Percentage is done in Organic farming Soil samples from various places in Tanuku Region, Andhra Pradesh, India. It provides all the necessary information about, effect of Organic farming on the concentration of soil organic carbon and also assess the amount of organic matter in soil. The result depends on the quality of soil. The Soil samples were collected systematically from organic farming lands, Sieved the soil samples through 2mm sieves. The determination of SOC is based on the Walkley-Black Chromic acid Wet oxidatiom method. The method measures the amount of carbon in plant and animal remains, including soil humus but not charcoal or coal

Organic Farming, Soil Health, and Food Quality: Considering Possible Links

2016 ◽  
pp. 319-367 ◽  
Author(s):  
J.R. Reeve ◽  
L.A. Hoagland ◽  
J.J. Villalba ◽  
P.M. Carr ◽  
A. Atucha ◽  
...  
Keyword(s):  
Organic Farming ◽  
Food Quality ◽  
Soil Health ◽  
Farming Soil

scholarly journals An ecosystem approach to assess soil quality in organically and conventionally managed farms in Iceland and Austria

SOIL ◽  
2015 ◽  
Vol 1 (1) ◽  
pp. 83-101 ◽  
Author(s):  
J. P. van Leeuwen ◽  
T. Lehtinen ◽  
G. J. Lair ◽  
J. Bloem ◽  
L. Hemerik ◽  
...  
Keyword(s):  
Organic Matter ◽  
Organic Farming ◽  
Soil Quality ◽  
Soil Aggregates ◽  
Chemical Properties ◽  
Taxonomic Diversity ◽  
Biological Properties ◽  
Organic Farms ◽  
Soil Microarthropods ◽  
Conventional Farms

Abstract. Intensive agricultural production can be an important driver for the loss of long-term soil quality. For this reason, the European Critical Zone Observatory (CZO) network adopted four pairs of agricultural CZO sites that differ in their management: conventional or organic. The CZO sites include two pairs of grassland farms in Iceland and two pairs of arable farms in Austria. Conventional fields differed from the organic fields in the use of artificial fertilisers and pesticides. Soils of these eight farms were analysed in terms of their physical, chemical, and biological properties, including soil aggregate size distribution, soil organic matter contents, abundance of soil microbes and soil fauna, and taxonomic diversity of soil microarthropods. In Icelandic grasslands, organically farmed soils had larger mean weight diameters of soil aggregates than the conventional farms, while there were no differences on the Austrian farms. Organic farming did not systematically influence organic matter contents or composition, nor soil carbon and nitrogen contents. Also, soil food web structures, in terms of presence of trophic groups of soil organisms, were highly similar among all farms, indicating a low sensitivity of trophic structure to land use or climate. However, soil organism biomass, especially of bacteria and nematodes, was consistently higher on organic farms than on conventional farms. Within the microarthropods, taxonomic diversity was systematically higher in the organic farms compared to the conventional farms. This difference was found across countries and farm, crop, and soil types. The results do not show systematic differences in physical and chemical properties between organic and conventional farms, but confirm that organic farming can enhance soil biomass and that microarthropod diversity is a sensitive and consistent indicator for land management.

scholarly journals Organic farming practices change the soil bacteria community, improving soil quality and maize crop yields

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11985
Author(s):  
Ademir Durrer ◽  
Thiago Gumiere ◽  
Maurício Rumenos Guidetti Zagatto ◽  
Henrique Petry Feiler ◽  
Antonio Marcos Miranda Silva ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Organic Farming ◽  
Soil Bacteria ◽  
Crop Yields ◽  
Bacterial Community Composition ◽  
Chemical Properties ◽  
Soil Bacterial Community ◽  
Organic Management ◽  
Organic Systems ◽  
Soil Bacterial

Background The importance of organic farming has increased through the years to promote food security allied with minimal harm to the ecosystem. Besides the environmental benefits, a recurring problem associated with organic management is the unsatisfactory yield. A possible solution may rely on the soil microbiome, which presents a crucial role in the soil system. Here, we aimed to evaluate the soil bacterial community structure and composition under organic and conventional farming, considering the tropical climate and tropical soil. Methodology Our organic management treatments were composed by composted poultry manure and green manure with Bokashi. Both organic treatments were based on low nitrogen inputs. We evaluated the soil bacterial community composition by high-throughput sequencing of 16S rRNA genes, soil fertility, and soil enzyme activity in two organic farming systems, one conventional and the last transitional from conventional to organic. Results We observed that both organic systems evaluated in this study, have higher yield than the conventional treatment, even in a year with drought conditions. These yield results are highly correlated with changes in soil chemical properties and enzymatic activity. The attributes pH, Ca, P, alkaline phosphatase, and β- glucosidase activity are positively correlated with organic systems, while K and Al are correlated with conventional treatment. Also, our results show in the organic systems the changes in the soil bacteria community, being phyla Acidobacteria, Firmicutes, Nitrospirae, and Rokubacteria the most abundant. These phyla were correlated with soil biochemical changes in the organic systems, helping to increase crop yields. Conclusion Different organic management systems, (the so-called natural and organic management systems, which use distinct organic sources), shift the soil bacterial community composition, implying changes in their functionalities. Also, our results contributed to the identification of target bacterial groups and changes in soil chemical properties and enzymatic activity in a trophic organic farming system, which may contribute to higher crop yields.

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