Desafios Da Produção De Soja Orgânica Como Determinante À Implantação De Seu Cultivo Para Fins Comercias Na Região Oeste Do Paraná

Inagaki, Marcelo Nobuo; Junqueira, Clarissa Pereira; Bellon, Patrícia Paula

doi:10.19177/rgsa.v7e12018682-699

Cited by 3 publications

(4 citation statements)

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“…Demand for organic soybean is increasing, along with society's tendency to seek healthier lifestyle habits (Martinelli & Cavalli, 2019). Its production is a good investment for small farmers, adding value to their production (Inagaki et al, 2018). However, disease control is the major challenge for this production system (Ibanhes et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Alternative Products to Control Soybean Downy Mildew in the Field

Gabardo¹,

Pria²,

Silva³

et al. 2020

JAS

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Soybean mildew caused by Oomycota Peronospora manshurica, is a disease widely spread in Brazil. In order to study the efficiency of soybean mildew control due to the application of alternative products and fungicide in the field, experiments were conducted in Ponta Grossa, PR, Brazil, during the 2013/2014 and 2014/2015 growing seasons. The design used was randomized blocks with four replications. The treatments were: 1-witness; 2-acibenzolar-S-methyl; 3-calcium; 4-micronutrients: copper, manganese and zinc; 5-micronutrients: manganese, zinc and molybdenum; 6-NK fertilizer; 7-Ascophyllum nodosum and 8-azoxystrobin + cyproconazole with the addition of Nimbus adjuvant. Four applications of alternative products (phenological stages V3, V6, R1 and R5.1) and two of fungicide (phenological stages R1 and R5.1) were performed. The mildew severity was estimated using a diagrammatic scale. The severity data made it possible to calculate the area under the disease progress curve (AUDPC). In the 2014/2015 harvest the disease was more severe. The control of downy mildew by the use of fungicide did not reduce the epidemic. The fungicide was not efficient in the two evaluated seasons. All tested alternative products reduced the disease severity and AUDPC in both seasons. The best results in reducing downy mildew were found with the application of acibenzolar-S-methyl, micronutrients (Cu, Mn, Zn) and A. nodosum.

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Section: Introductionmentioning

confidence: 99%

Alternative Products to Control Soybean Downy Mildew in the Field

Gabardo¹,

Pria²,

Silva³

et al. 2020

JAS

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“…In Brazilian agriculture, few studies have evaluated EE from organic soybean cultivation (ASSENHEIMER et al, 2009). The potential of organic soybean grows along with the tendency of society to seek healthier living habits, with food being one of its main pillars (INAGAKI et al, 2018). In addition, cultivation on an organic basis can be seen as a factor of added value to the product, thus enabling increased income from rural properties (INAGAKI et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…The potential of organic soybean grows along with the tendency of society to seek healthier living habits, with food being one of its main pillars (INAGAKI et al, 2018). In addition, cultivation on an organic basis can be seen as a factor of added value to the product, thus enabling increased income from rural properties (INAGAKI et al, 2018). This highlights the importance of EE studies in this area, aiming to evaluate the organic production process and the level of sustainability of these systems.…”

Section: Introductionmentioning

confidence: 99%

An analysis of energy efficiency and greenhouse gas emissions from organic soybean cultivation in Brazil

Guareschui

Martins

Sarkis

et al. 2019

SCA

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The assessment of energy efficiency (EE) and greenhouse gas (GHG) emissions can highlight the sustainability of agro-systems and decision-making regarding reduction of production costs and environmental pollution. In this context, the objective of this work was to evaluate the EE and GHG emissions (CO 2 , CH 4 e N 2 O) of a soybean crop under organic cultivation in different regions of Brazil in the agricultural year 2014-2015. For this, 19 soybean areas were evaluated. The inputs and outputs of the agricultural operations and / or inputs used were calculated by multiplying the quantity used by their calorific value or energy coefficient at each stage of production. The energy efficiency was obtained by the ratio between the amount of total output energy and the total energy consumption during the production process. In order to estimate GHG emissions, the principles of the life cycle assessment methodology and recommendations of the Intergovernmental Panel on Climate Change (IPCC) were applied. For each 1.0 MJ of energy consumed in the organic production of soybeans, an average of 7.9 MJ of renewable energy was produced in the form of grains of this crop. The main energy costs of growing these organic crops were with seeds, fuel and with tractors, machines and agricultural implements (TMI). For each 1 kg of organic grain produced from soybeans, 0.19 kg of CO 2 eq are emitted during their production and delivery cycles in the warehouse. The main sources of CO 2 eq emission to the atmosphere were the seeds, fuels and organic fertilizers.

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“…It is noteworthy that Inagaki et al (2018) concluded that production of organic soybean in the west of the state of Paraná was not viable, due to the difficulty of management, reduced number of studies, and low demand for organic foods by the population. Thus, the aim of this study was to investigate the physiological potential and health of soybean seeds produced in organic and conventional management systems.…”

Section: Introductionmentioning

confidence: 99%

Physiological potential and health of soybean seeds obtained from organic and conventional systems

Neto

Freiria

Costa³

et al. 2019

J. Seed Sci.

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The quality of seeds produced is the result of the management practices used and environmental conditions during growing. The aim of this study was to evaluate the physiological potential and the health of soybean seeds produced in an organic and conventional system. The genotypes UEL 110 and 122 and BRS 257 and 284 were tested in organic and conventional systems in a randomized block design. The following characteristics were evaluated: moisture content; thousand seed weight (TSW); germination (G) and first count of germination (FCG); tetrazolium (TZ); classification, length, and dry matter of seedlings; and seed health. Analysis of variance was performed separately for the management systems, followed by combined analysis. When significant, the Tukey test (p<0.05) was applied. Multivariate analysis was performed using R software. There was not significance between genotypes and management systems. The conventional management system performed positively for the characteristics TSW, G, TZ, FCG, classification, and length and dry matter of seedling roots, as well as for plant health. The UEL genotypes obtained higher TSW; UEL 110, lower germination; and BRS 257, a smaller number of ungerminated seeds and higher infestation by Cladosporium spp. The seeds produced under the organic system have greater weight and lower infestation by contaminants, whereas the conventional system produces seeds of better physiological quality and lower contamination by Phomopsis and bacteria. The genotype BRS 257 may have seeds multiplied in the organic and conventional management systems.

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Desafios Da Produção De Soja Orgânica Como Determinante À Implantação De Seu Cultivo Para Fins Comercias Na Região Oeste Do Paraná

Cited by 3 publications

References 0 publications

Alternative Products to Control Soybean Downy Mildew in the Field

Alternative Products to Control Soybean Downy Mildew in the Field

An analysis of energy efficiency and greenhouse gas emissions from organic soybean cultivation in Brazil

Physiological potential and health of soybean seeds obtained from organic and conventional systems

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