Decomposição De Resíduos De Culturas E Mineralização De Nutrientes Em Solo Com Diferentes Texturas

Maluf, Henrique José Guimarães Moreira; Soares, Emanuelle Mercês Barros; Silva, Ivo Ribeiro da; Neves, Júlio César Lima; Silva, Lucas de Oliveira Guimarães

doi:10.1590/01000683rbcs20140657

Cited by 27 publications

(25 citation statements)

References 25 publications

(19 reference statements)

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“…However, Maluf et al (2015) observed no effect of soil texture about CO 2 evolution, in study that evaluated the vegetable waste degradation in soils with textures simulated in laboratory from a Oxisol treated with different sand amounts; nevertheless, in this study the authors considered absence the effects of native soil organic matter about CO 2 releasing, since, the CO 2 results were described in net values.…”

Section: Carbon Biodegradation Of Swine Effluentsmentioning

confidence: 84%

Carbon Mineralization in Soils Irrigated with Treated Swine Wastewater

Moretti¹,

Bertoncini²,

Abreu-Junior³

2017

JAS

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Treated swine wastewater agricultural use can promote environmental and agronomical improvements, however, the inappropiate management of this organic load added on soil can cause unbalances in soil fertility and in availability of nutrients and/or contaminants. Thus, this study aim was evaluate the organic matter biodegradation of treated swine wastewater (WB) and diluted swine wastewater (WBD) applied in Oxisol clayey texture (CS) and in Ultisol (SS) with medium-sandy texture. The treatments studied were: R1 -CS control; R2 -irrigation with WB on CS; R3 -irrigation with WBD on CS; R4 -SS control; R5 -irrigation with WBD on SS; R6 -irrigation with WBD on SS. Three applications were done in flasks containing 500 g of soils sampled from depth of 0-20 cm, the C-CO 2 evolutions and degradation fractions were quantified after each application. The results obtained were adjusted to first-order chemical kinetics model. More than half organic matter was biodegraded between 4 and 10 days of incubation, when higher WB amount was applied (33.3 mm). Sucessive WBD use caused degradation of organic matter remaning of previous application. Higher CO 2 evolutions were obtained for Oxisol treatments due to higher carbon contents of this soil. SW use caused depletion of Ultisol native organic matter. However, the WB use in Oxisol provided accumulation of organic matter. Soon, the respirometry test evidenced the importance of evaluate the soil depuration capacity before agricultural use, since that this process can affect the contents of organic matter native of these soils and the availabity of nutrient/contaminant for soil-water-plant system.

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Section: Carbon Biodegradation Of Swine Effluentsmentioning

confidence: 84%

Carbon Mineralization in Soils Irrigated with Treated Swine Wastewater

Moretti¹,

Bertoncini²,

Abreu-Junior³

2017

JAS

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“…However, according to Carneiro et al (2013), other factors besides the C:N ratio should be considered in the determination of N mineralization rates, such as N, lignin, polyphenols content and N forms present in the residues. Results obtained by Maluf et al (2015) showed that the decomposition of the plant residues was significantly influenced by the concentrations of N, and the release rates of macronutrients, by their contents in the residues, being K the nutrient released faster because it is not a constituent of plant structures. However, when it is desired to use plant residues as mulch in arid and semiarid environments, it is ideal that it has a high C:N ratio in order to prolong its permanence in the field.…”

Section: Mulchmentioning

confidence: 99%

Practices for the improvement of the agricultural resilience of the forage production in semiarid environment: a review

Souza¹,

Silva²,

Souza³

et al. 2019

Amaz. Jour. of Plant Resear.

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Water scarcity, climatic conditions and low availability of fodder produced in Caatinga are some of the main problems faced by farmers in the Brazilian semiarid region. Therefore, the objective of this paper is to review some agricultural resilience practices that aim to increase forage production in the Brazilian semiarid. Several studies have shown that the use of fodder plants tolerant to this type of environment is essential to improve the production of ruminant feed. Among these, we highlight the forage cactus, which is rich in water, energy and minerals and highly tolerant to water deficit. Millet, in turn, is another plant that adapts to this environment, presenting better nutritional characteristics, besides being a more fibrous vegetable, and can be associated with cactus in the diet of the herds. This association can be done through the intercropping, which allows the simultaneous cultivation of two or more species in the same area, aiming at the most efficient use of available natural resources. The use of irrigation events with minimal and regular water use in cactus crops has been shown to be a very promising practice. However, the scarcity of this resource in semiarid regions, adding to this increasing salt concentrations in the springs, requires proper management. Additionally, other agricultural resilience practices, such as mulching, can directly contribute to reducing the need for irrigation, conserving soil moisture, decreasing soil thermal amplitude, improving its chemical, physical and biological properties, contributing to improved agricultural yields.

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“…The highest values for K + in the area (160.93 mg dm -3 , 139.05 and 127.00 mg dm -3 ) were found in the areas of pasture, intercropping and agroforestry. According to Maluf et al (2015), another important contribution of the maintenance of the organic residues in the soil surface is the increase of this nutrient availability, especially in sandy soils.…”

Section: Depthmentioning

confidence: 99%

Ethnopedological Studies to Characterize Neosols at the Brazilian Semiarid Region

Silva¹,

Portela²,

Dias³

et al. 2019

JAS

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The ethnopedological approach to soil characterization presents great challenges, since the understanding of the systems occurs through the knowledge acquired by the man in his coexistence with agroecosystems. The aim of the present research was to characterize the agricultural soils through morphological, physical and chemical analysis, using ethnopedological studies in the ‘Santa Agostinha’ Settlement Project, Caraúbas-RN, Brazil. Five areas were defined for study in the soil/landscape relation: i) area with cashew cultivation; ii) area of pasture; iii) area of crops in consortium; iv) agroforestry; and v) preserved forest, used as the reference. Participatory workshops, exchanges and classifications (from the locals and formal) were carried out with the analysis of the morphological, physical and chemical attributes of the studied soils in the layers of 0.00-0.10, 0.10-0.20 and 0.20-0.30 m. The results of the ethicist classification, based on the attributes evaluation were: Quartzarenic latosol NEOSOL (cashew area); Regolitic euthrofic NEOSOL (pasture area); Ortic quartzarenic fragiudult NEOSOL (intercropping area); typical quartzarenic ortic NEOSOL (agroforestry area and typical hydromorphic quartzarenic NEOSOL that presented a close relation with the emicist classification (from the local people). The observation of the different soil types in the landscape, due to the stratification of the environments, allowed the growers to identify characteristics associated with soil potentials and restrictions and, consequently, the correct management to be adopted. The experiences of local growers in the participatory workshops provided an exchange of popular and scientific knowledge, as well as new perspectives of coexistence with the semiarid.

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Decomposição De Resíduos De Culturas E Mineralização De Nutrientes Em Solo Com Diferentes Texturas

Cited by 27 publications

References 25 publications

Carbon Mineralization in Soils Irrigated with Treated Swine Wastewater

Carbon Mineralization in Soils Irrigated with Treated Swine Wastewater

Practices for the improvement of the agricultural resilience of the forage production in semiarid environment: a review

Ethnopedological Studies to Characterize Neosols at the Brazilian Semiarid Region

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