Organic Matter Fractions and Carbon Management Index in Oxisol Under Integrated Agricultural Production Systems

This work aimed to evaluate the oxidizable and chemical fractions of organic matter and the carbon management index in different integrated agricultural production systems, hay production and native forest areas in an Oxisol. Nine areas with different management systems were evaluated being six managements of the combination between different oat density (40 and 60 kg ha-1) and grazing frequencies (0, 1 and 2) in autumn-winter and soybean succession in spring-summer, one with natural reseeding ryegrass and forage turnip in autumn-winter and soybean succession in spring-summer and two reference areas. In each soil management systems were collected soil samples composite in the 0-5, 5-10 and 10-20 cm layers and determined the Total Organic Carbon (TOC), humic substances (Fulvic Acids - FA, Humic Acids - HA and humin - HUM), the carbon in the oxidizable fractions (F1, F2, F3 and F4) and Carbon Management Index (CMI). Were observed that chemical, oxidizable fractions and CMI, do not have significant differences between with the various managements each other. For TOC, HA, HUM, F1, F3, F4 and CMI, the managements did not differ from the reference areas indicating maintenance of soil carbon.

Download Full-text

CHEMICAL PROPERTIES AND PHYSICAL FRACTIONS OF ORGANIC MATTER IN OXISOLS UNDER INTEGRATED AGRICULTURAL PRODUCTION SYSTEMS

JOURNAL OF NEOTROPICAL AGRICULTURE ◽

10.32404/rean.v7i3.4747 ◽

2020 ◽

Vol 7 (3) ◽

pp. 81-89

Author(s):

Carlos Augusto Rocha De Moraes Rego ◽

Paulo Sérgio Rabello de Oliveira ◽

Jeferson Tiago Piano ◽

Jonas Francisco Egewarth ◽

Vanessa Aline Egewarth ◽

...

Keyword(s):

Organic Matter ◽

Organic Carbon ◽

Agricultural Production ◽

Production Systems ◽

Management Strategies ◽

Chemical Properties ◽

Native Forest ◽

Organic Carbon Content ◽

Reference Areas ◽

Agricultural Production Systems

The main cause of decreased soil fertility and soil organic matter content is intensive crop farming with inadequate management. This study aimed to evaluate soil chemical properties, total organic carbon content, physical granulometric fractions (particulate organic carbon and mineral-associated organic carbon), carbon stocks, and carbon management indices of oxisols in different integrated agricultural production systems (IAPSs) with reference to values in a haymaking area and native forest. The experiments were performed using completely randomized design, considering nine differently managed areas, including seven IAPSs and two reference areas (haymaking area and native forest); four soil samples from the 0.00-0.05, 0.05-0.10, and 0.10-0.20 m layers were randomly collected from each area and the abovementioned variables were evaluated. The results showed no differences in variables between the managed and reference areas, indicating the maintenance of fertility and carbon fractions. Therefore, the tested management strategies promote beneficial modifications of soil properties. Producers should adopt different IAPS management strategies for soil preservation.

Download Full-text

Distribution of organic matter fractions of an Oxisol under different integrated agricultural production systems.

10.5194/egusphere-egu21-9747 ◽

2021 ◽

Author(s):

Juan López de Herrera ◽

Carlos Augusto Rocha de Moraes Rego ◽

Paulo Sergio Rabello de Oliveira ◽

Eloisa Mattei ◽

Antonio Saa-Requejo

Keyword(s):

Organic Matter ◽

Organic Carbon ◽

Agricultural Production ◽

Production Systems ◽

Economic Benefits ◽

Livestock Grazing ◽

Management Systems ◽

Native Forest ◽

Organic Matter Fractions ◽

Agricultural Production Systems

Distribution of organic matter fractions of an Oxisol under different integrated agricultural production systems. AUTHORS Juan L&#243;pez-Herrera, Augusto Rocha de Moraes Rego, Paulo Sergio Rabello de Oliveira, Eloisa Mattei, Antonio Saa-Requejo.E-mail: [email protected], [email protected], [email protected], [email protected], [email protected]AbstractThe declining organic matter content (OM) in agricultural soils is due mainly to poor agricultural management as soil fertility is closely related to OM. This work studies the variation in the different fractions of the OM in 7 plots with different agronomic management following integrated agricultural production system (IAPS) with different type of management. Six plots presented two crops per year, one of oats grown in autumn-winter and then soybeans grown in spring-summer. Seed doses per hectare and the management of livestock grazing were different among them. The seventh plot had a natural resection of rye and forage turnip during the winter, with succession of soybeans in spring-summer. Two reference plots were selected with hay and native forest production. These IAPS were compared at two areas, haymaking area and native forest, classified as Oxisols.In each plot, random samples were analyzed at three different soil horizons, between 0.00-0.05, 0.05-0.10 and 0.10-0.20 m. Based on the soil samples the following parameters were measured: Total Organic Carbon (TOC), Particulate Organic Carbon (POC) associated with sand fraction, carbon stock (TOCst), mineral-associated organic carbon (MOC) associated with silt and clay, and humic substances (Fulvic Acids FA, Humic Acids HA and humin HUM). The relationship between these seven carbon indices and the seven IAPS were statistically analyzed using Tocher's multivariate non-hierarchical grouping methods.The results pointed out that the different fractions of MO minus AH have a positive correlation in the three layers studied compared to the native forest. Therefore, IAPS management strategies promote beneficial modifications to soil properties and are beneficial for soil preservation. The management systems studied can serve as options for producers who wish to replace exclusive hay production with integration between crops and livestock in an Oxisol area similar to this one. Finally, the adoption of these management systems can lead to better soil preservation and increased economic benefits.&#160;Keywords: integrated crop-livestock system, soil management, fractions of soil organic matter.&#160;ReferenceREGO, C. A. R. M.; OLIVEIRA, P. S. R.; PIANO, J. T.; ROSSET, J.S.; EGEWARTH, J. F.; MATTEI, E.; SAMPAIO, M. C.; LOPEZ-HERRERA, J.; GON&#199;ALVES JUNIOR, A. C. (2020). Chemical properties and physical fractions of organic matter in oxisols under integrated agricultural production systems. Revista de Agricultura. Neotropical, Cassil&#226;ndia-MS, v. 7, n. 3, p. 81-89, jul./set. 2020. ISSN 2358-6303.&#160;REGO, C. A. R. M.; OLIVEIRA, P. S. R.; PIANO, J. T.; EGEWARTH, J. F.; EGEWARTH, V. A.; LOPEZ-HERRERA, J. (2020). Organic Matter Fractions and Carbon Management Index in Oxisol Under Integrated Agricultural Production Systems. Journal of Agricultural Studies, 2020, Vol. 8, No. 3 ISSN 2166-0379 https://doi.org/10.5296/jas.v8i3.16325&#160;

Download Full-text

Stock and indices of carbon management under different soil use systems

Revista Brasileira de Ciências Ambientais (Online) ◽

10.5327/z21769478867 ◽

2021 ◽

Vol 56 (2) ◽

pp. 286-295

Author(s):

Diego Henrique de Oliveira Morais ◽

Carla Aparecida da Silva ◽

Jean Sérgio Rosset ◽

Paulo Guilherme da Silva Farias ◽

Camila Beatriz da Silva Souza ◽

...

Keyword(s):

Organic Matter ◽

Carbon Stock ◽

Stock Index ◽

Management Systems ◽

Native Forest ◽

Carbon Management ◽

Permanent Pasture ◽

Lability Index ◽

Tillage System ◽

Carbon Management Index

The aim of this study was to evaluate the stock of total organic carbon (TOC) and to perform the physical-granulometric fractionation of soil organic matter (SOM) in different management systems (MS). Three MS and one reference area of Native Forest (NF) were studied, and the three systems were sugarcane (SC), permanent pasture (PP) and no-tillage system (NTS). Soil samples were collected in the 0–0.05, 0.05–0.10, 0.10–0.20-m layers. Soil density (Sd), TOC, stratification index (SI), carbon stock (StockC), variation in StockC (∆StockC), carbon content of particulate organic matter (C-POM) and mineral organic matter (C-MOM), carbon stock index (CSI), lability (L), lability index (LI), and carbon management index (CMI) were determined. The MS presented higher Sd than the NF area. The NF area had higher TOC contents in the first layers, reaching 25.40 g kg-1 in the 0–0.05-m layer, with the PP area having higher values than the NF in the 0.10–0.20-m layer. The NF area showed the highest levels of C-POM (15.25 g kg-1) and C-MOM (10.15 g kg-1) in the first layer. In the 0.10–0.20-m layer, the PP and NTS systems were superior to the others. Regarding the C-MOM content, SC and PP showed higher levels in the 0.10–0.20-m layer. The highest CMI values were observed in the NTS and PP areas in the 0.10–0.20-m layer. The MS increased the Sd and reduced the TOC levels. The different MS modified the POM fraction, and the MOM fraction was most impacted by the SC area. The lability of the SOM was altered by the MS in the most superficial layers.

Download Full-text

Nutrient and Organic Matter Dynamics as Components of Agricultural Production Systems Models

Soil Fertility and Organic Matter as Critical Components of Production Systems - SSSA Special Publications ◽

10.2136/sssaspecpub19.c9 ◽

2015 ◽

pp. 147-166 ◽

Cited By ~ 6

Author(s):

C.V. Cole ◽

J. Williams ◽

M. Shaffer ◽

J. Hanson

Keyword(s):

Organic Matter ◽

Agricultural Production ◽

Production Systems ◽

Organic Matter Dynamics ◽

Systems Models ◽

Agricultural Production Systems

Download Full-text

Humic substances and their effects on the micropropagation of banana

Research Society and Development ◽

10.33448/rsd-v10i2.12297 ◽

2021 ◽

Vol 10 (2) ◽

pp. e20510212297

Author(s):

Victor Hugo Teixeira Buttrós ◽

Maysa Mathias Alves Pereira ◽

Adalvan Daniel Martins ◽

Filipe Almendagna Rodrigues ◽

Moacir Pasqual ◽

...

Keyword(s):

Fulvic Acid ◽

Humic Substances ◽

Agricultural Production ◽

Production Systems ◽

Fulvic Acids ◽

Social Contexts ◽

Environmental Preservation ◽

Vitro Development ◽

Agricultural Production Systems

The growing concern to promote sustainable agriculture, seeking environmental preservation and, at the same time, increased productivity resulted in the search for technologies for the implementation of agricultural production systems, with ecological approaches and responsible use of natural resources, in the economic, political and social contexts in each region. One of the potential alternatives to achieve these results would be the use of humic substances, considering their direct and indirect mechanisms aimed at increasing agricultural production. Thus, the objective of this work was to evaluate the bioactivity of humic and fulvic acids, as well as to promote improvements in the phytotechnical attributes of banana cv. Prata-Anã micropropagated. The treatments consisted of five doses of humic acid and fulvic acid (2; 5; 10; 20 and 40 mg L-1) and a control without humic substances. Higher values for the length of the aerial part and the larger root were obtained with the use of 40 mg L-1 fulvic acid. The results prove the ability of fulvic acid to improve the in vitro development of banana explants.

Download Full-text

Prospects for the development of agrarian production systems in in the Right Bank Polesie of Ukraine

Interdepartmental thematic scientific collection "Agriculture" ◽

10.31073/zem.95.69-72 ◽

2018 ◽

Vol 2 (95) ◽

pp. 69-72

Author(s):

Yu.A. Tarariko ◽

L.V. Datsko ◽

M.O. Datsko

Keyword(s):

Agricultural Production ◽

Production Systems ◽

Economic Feasibility ◽

Capital Investments ◽

Resource Potential ◽

Grain Processing ◽

Processing And Storage ◽

The Right ◽

And Storage ◽

Agricultural Production Systems

The aim of the work is to assess the existing and prospective models for the development of agricultural production in Central Polesie on the basis of economic feasibility and ecological balance. The evaluation of promising agricultural production systems was carried out with the help of simulation modeling of various infrastructure options at the levels of crop and multisectoral specialization of agroecosystems. The agro-resource potential of Central Polesie is better implemented in the rotation with lupine, corn and flax dolguntsem with well-developed infrastructure, including crop, livestock units, grain processing and storage systems, feed, finished products and waste processing in the bioenergetic station. The expected income for the formation of such an infrastructure is almost 8 thousand dollars. / with a payback period of capital investments of 2-3 years.

Download Full-text