JournalTOCs

Revista Verde de Agroecologia e Desenvolvimento Sustentável
Number of Followers: 2

This is an Open Access Journal

Open Access journal
ISSN (Print) 1981-8203 - ISSN (Online) 1981-8203
Published by Grupo Verde de Agricultura Alternativa

[2 journals]

Nutrient accumulation in the leaves and production of Tamani grass
inoculated with Azospirillum brasilense
- Authors: Reginaldo Almeida Andrade, Rychaellen Silva de Brito, Cleverson Agueiro de Carvalho, Sandra Bezerra da Silva, Mayara Almeida Drumond e Silva, Keilyson Naazio Oliveira Moraes
  Pages: 77 - 85
  Abstract: The implantation of pastures can be favored by strategies that combine conventional methods of cultivation with the inoculation of microorganisms that promote plant growth, such as the rhizobacterium Azospirillum brasilense, which are capable of improving the nutritional status of plants through several mechanisms, including the phosphate solubilization and biological nitrogen fixation, thereby reducing the need to apply chemical fertilizers. The purpose was to evaluate forage production and macronutrient contents in the leaves of Tamani grass, fertilized with natural phosphate and inoculated with Azospirillum brasilense. The experiment was carried out in a greenhouse, in a completely randomized design, organized in a 2 x 2 x 5 factorial scheme, with 3 replications. The treatments consisted of the presence and absence of rhizobacteria; two sources of phosphorus (triple superphosphate and natural phosphate); and five nitrogen rates (0; 75; 150; 225 and 300 kg ha-1), used as parameters to estimate biologically fixed nitrogen. The concentration of nutrients was determined in samples of cuts, performed at 56, 84 and 112 days after emergence. The effects of nitrogen fertilization were evaluated by regression analysis, with results demonstrating that the levels of N, Mg and S increase and those of P decrease linearly as a function of the applied rates. Inoculation improves the nutritional status of plants, increasing the foliar contents of N, P, K, resulting in higher production of dry biomass, in addition to reducing the need for nitrogen application by up to 40 kg ha-1.
  PubDate: 2022-04-01
  DOI: 10.18378/rvads.v17i2.9152
  Issue No: Vol. 17, No. 2 (2022)
The kinetics of the pineapple juice fermentation process
- Authors: Bárbara Caroline Nunes de Souza, Lia Lucia Sabino, Matheus Felipe de Oliveira Silva, Maurício Bonatto Machado de Castilhos
  Pages: 86 - 92
  Abstract: The chemical composition of fermented beverages is determinant to delineate their sensory characteristics since they are dependent on the fruit cultivation, processing, stabilization, storage, and the intrinsic characteristics of the producing region. Alcoholic fermentation is a biochemical process of relevance for the production of beverages with unique chemical and sensory features and the analysis of the fermentative behavior promotes real conditions to control this process to maximize the quality of the produced beverage. The present project aimed at studying the fermentation kinetics of the Pearl and Hawaiian pineapple juices, commercialized in the city of Frutal/MG, determining its physical-chemical properties to observe the necessary parameters to optimize the control of the fermentative process. The beverages showed high acidity (maximum 41.7 g/L in citric acid) and dry extract (47.7 g/L after fermentation), resulting in full-bodied beverages. All beverages were classified as dry (reducing sugar content below 4 g/L), the maximum alcohol content of 7.93 % v/v (Pearl) and 5.10 % v/v (Hawaiian), and with high total phenolic content (maximum of 1049 mg/L for Pearl and 852 mg/L for Hawaiian) assuming high antioxidant capacity. The kinetic parameters obtained showed that 72 hours after the start of alcoholic fermentation can be considered as a cutoff time for the consolidation of the fermentative process.
  PubDate: 2022-04-01
  DOI: 10.18378/rvads.v17i2.9156
  Issue No: Vol. 17, No. 2 (2022)
Chili peppers in natura and freeze-dried
- Authors: Lúcia Mara dos Reis Lemos, Maria Claudevânia Rabelo da Silva, Clarissa Maia de Aquino, Érica Jamily do Nascimento Almeida, Sandra Maria Lopes dos Santos, Antonia Lucivânia de Sousa Monte
  Pages: 93 - 99
  Abstract: Chilli pepper (Capsicum frutescens L.) is highlighted for its content of macronutrients and bioactive compounds, such as vitamins and phenolic compounds with antioxidant potential, being used as a spice in Brazilian cuisine. This work aims to analyze the physicochemical, proximate, mineral and microbiological composition, in addition to quantifying bioactive compounds and the antioxidant capacity of chilli pepper in natura and lyophilized form. Fresh and freeze-dried peppers were evaluated in terms of their physicochemical characteristics (pH, water activity, titratable acidity and total soluble solids), centesimal (protein, lipids, moisture, ash, reducing and non-reducing carbohydrates and caloric value) mineral (macro and microminerals) and microbiological (total coliforms, thermotolerants, molds and yeasts and Salmonella research). It was observed that the chilli peppers in natura and freeze-dried showed good nutritional composition, rich in bioactive compounds with antioxidant potential. Drying by lyophilization did not affect the components evaluated.
  PubDate: 2022-04-01
  DOI: 10.18378/rvads.v17i2.9182
  Issue No: Vol. 17, No. 2 (2022)
School garden implemented in Association for people with disabilities
- Authors: Luiza Vigne Bennedetti, Angela Guimarães, Bruna Raquel Rodrigues Teixeira, Maico Ismael Klein, Angélica Gomes Florczak dos Santos, Marc François Richter
  Pages: 100 - 108
  Abstract: The aim of this study was to assess the benefits observed after the implementation of a school garden in an Association that serves people with disabilities in the municipality of Paiçandu/PR. This is a descriptive cross-sectional study that analysed the perceptions of individuals involved with the garden project, which were collected from teachers of the institution, parents of enrolled students and company employees who worked on the project. Among the results, different benefits of the garden could be observed, especially concerning social, pedagogical, food and environmental aspects. Positive reports were observed from parents and teachers, particularly related to the social and pedagogical areas. The role of social and environmental transformation of the company involved in the project is also highlighted.
  PubDate: 2022-04-01
  DOI: 10.18378/rvads.v17i2.9285
  Issue No: Vol. 17, No. 2 (2022)
Estimation of the economic value of the Calakmul Biosphere Reserve,
Campeche, Mexico
- Authors: Thelma Alicia Hernández Domínguez, Francisco José Martín del Campo Saray
  Pages: 109 - 117
  Abstract: Environmental assets are a source of social, economic and cultural progress in each country, however, they have deteriorated due to human overexploitation and there is widespread concern at the governmental and organizational level in their preservation. Environmental assets provide a variety of goods and services to society, the need to value them as an economic instrument allows to have tangible and monetary elements for adequate conservation plans. The objective of this study was to estimate the economic value of the Calakmul Biosphere Reserve, Campeche, Mexico. It was necessary to analyze factors and indicators of environmental assets of the reserve, study variables that affect the economic value, as well as identify and apply a method for valuation of the reserve. An analysis of institutions and regulations related to the administration, preservation and quantification of environmental assets was presented, where it was identified that there are no specific regulations for the valuation of natural areas as a whole. Regarding the methodological process of valuation of environmental assets, there is no single valuation method, however, the concept of Total Economic Value was applied, which involved direct and indirect uses related to environmental assets, for which, it was necessary to identify benefits that said assets represented and make their economic quantification. Although the value that is concluded with this intervention project is not absolute, it corresponds to a reference value and complies with elements that help to sensitize society in valuing natural resources and compromise the subsistence of future generations.
  PubDate: 2022-04-01
  DOI: 10.18378/rvads.v17i2.8640
  Issue No: Vol. 17, No. 2 (2022)
Smallholders agroecological production models: the case of the districts
of Metuge and Gondola, Moçambique
- Authors: Rafael Francisco Nanelo, António Elísio José
  Pages: 118 - 126
  Abstract: Agroecological production is a comprehensive framework for sustainable use of biodiversity that also supports productivity and resilience. Farmers benefit from diversified systems through increased economic resilience, reduced dependence on agricultural inputs. Agroecological models in the sustainable agriculture strand are characterized into organic; organic; biodynamic; and permaculture farming, households are vital for transition to more sustainable models of agriculture. The present work aimed at describing the agro-ecological model of the family sector, for which, with recourse to random sampling, surveys were carried out among 200 households in the communities of the district of Pemba-Metuge in the localities of Metuge-sede (Nacuta) and Mieze, of the district of Gondola in the localities of Gondola sede and Inchope on the traditional and/or local knowledge of the forms of production. Maize was the main crop in all areas (100%), cassava is grown more in Nacuta (94%), Gondola (84%), Inchope (65%) and Mieze (44%). Rainfed agriculture was the type of crop most used by households with frequencies of 98% (Mieze), 94% (Nacuta), 93% (Inchope), with the most frequent intercropping (29.40%) consisting of maize, cassava and groundnut. The productive characteristics of the communities evidenced the non-use of any agricultural supplements resembling the organic production model.
  PubDate: 2022-04-01
  DOI: 10.18378/rvads.v17i2.9302
  Issue No: Vol. 17, No. 2 (2022)
Impacts of water and saline stress on Erythrina velutina Wild seedlings
- Authors: Francisco Ícaro Carvalho Aderaldo, Gabriela de Sousa Ferreira, Janacinta Nogueira de Sousa, Paulo Ovídio Batista de Brito, Franklin Aragão Gondim
  Pages: 127 - 134
  Abstract: This article analyzed the growth of mulungu (Erythrina velutina Wild) seedlings, subjected to saline stress and associated with irrigation suspension. This experiment was carried out in 5-liter pots, irrigated at 50% of field capacity. The experimental design was completely randomized, consisting of six treatments: T1- Irrigation with distilled water (Testimony); T2 - Irrigation with 50 mM NaCl solution; T3 – Irrigation with 100 mM NaCl solution; T4 - Irrigation with distilled water with irrigation suspended at 15 days after sowing (DAS); T5 - Irrigation with 50 mM NaCl solution with suspended irrigation at 15 DAS; T6 - Irrigation with 100 mM NaCl solution with suspended irrigation at 15 DAS. The control treatment had a smaller amount of deleterious effects for the seedlings, being, therefore, the most suitable for the cultivation of mulungu. Salinity caused reductions in the analyzed growth variables, such as total fresh matter, root and shoot, total dry matter, root and shoot, height, stem diameter and number of leaves. These effects were intensified in plants submitted to 100 mM of NaCl and irrigation suspension.
  PubDate: 2022-04-01
  DOI: 10.18378/rvads.v17i2.9018
  Issue No: Vol. 17, No. 2 (2022)
Causes for postharvest loss in tomato cultivars commercialized in Ceasa,
Ceará, Brazil
- Authors: Isla Simplicio Teixeira, Maria do Socorro Moura Rufino, Ciro de Miranda Pinto, Antônio Odálio Girão de Almeida
  Pages: 135 - 142
  Abstract: The research consisted in identifying the post-harvest losses of tomato cultivars 'Longa Vida' and 'Cajá' commercialized in Ceasa-Ceara, identifying the main difficulties of their commercialization. The actions were evaluated in two stages: Interviews with 50 licensees who sell tomatoes; Evaluation of the main losses of tomato on benches and/or boxes. The fruits, before commercialization, were subjected to sampling analysis containing 899.4 kg in the “Initial Quality” sample, to determine the main damages and 191.8 kg in the “Discard” sample, to determine the real loss of the product. Subsequently, the percentage and average of fruits at different stages of maturation (green, horticultural maturity and fully ripe) were calculated, with mechanical and physiological injuries, phytopathological diseases, pest attack and absence of damage. The cultivar Longa Vida is the most commercialized at Ceasa (70%). Transport is carried out in open trucks (80%) and storage is on benches and/or boxes (86%). For tomato marketing, plastic packaging is used (98%), and incorrect handling is the main factor that makes marketing difficult (32%). In the 'Initial Quality' sampling, 68.99% of the cultivars presented horticultural maturity (47 kg). 18.07% of the most frequent injuries are mechanical (12 kg) and 10.55% to physiological damage (7 kg). Of the total “discard” sampling, about 60.58% (8 kg) of the fruits showed horticultural maturity and 36.43% showed damage due to mechanical injury (48 kg) and 21.90% damage due to pest attack (2.9 kg). Post-harvest losses can be reduced with the implementation and use of refrigerated chambers.
  PubDate: 2022-04-01
  DOI: 10.18378/rvads.v17i2.9286
  Issue No: Vol. 17, No. 2 (2022)
Dynamics of land occupation in the municipality of Novo Repartimento,
Pará, Brazil
- Authors: Manuela Braga de Souza, Ana Luísa da Costa Mesquita, Orleno Marques da Silva Júnior, Pedro Monteiro Cardoso, Maria de Lourdes Pinheiro Ruivo, Paula Fernanda Pinheiro Ribeiro Paiva
  Pages: 143 - 148
  Abstract: The municipality of Novo Repartimento, Pará, went through a disorderly process of urban expansion, due to the intensification of agricultural activities, which triggered the occupation of environmentally fragile areas. This occupation accentuated negative impacts caused by deforestation by changing landscapes. Thus, the objective of the study was to analyze and evaluate the evolution of land use and occupation with emphasis on deforested areas. The procedures consisted of the elaboration and crossing of thematic maps in order to establish hierarchical classes of the variable deforestation; multitemporal analysis of the evolution of the classes of use and occupation between two distinct periods: 2000 and 2019, with the help of geotechnologies. We used cartographic data available in the database of the Brazilian Institute of Geography and Statistics, the MapBiomas Project and Google Earth Engine. The results demonstrated the importance of the use of geotechnologies for the sustainable planning of land occupation in which, it is observed that deforestation in the municipality is increasing, and within the main variables and correlations, stands out the agricultural and timber sector.
  PubDate: 2022-04-01
  DOI: 10.18378/rvads.v17i2.9218
  Issue No: Vol. 17, No. 2 (2022)