Desempenho econômico da cultura do girassol em sistemas de agricultura familiar do sudeste paranaense

Ribeiro, Maria de Fátima; Raiher, Augusta Pelinski

doi:10.1590/s0103-84782013005000042

Cited by 2 publications

(3 citation statements)

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“…In addition to direct effect on economic performance, the use of high sowing may indirectly reduce income as a result of grain yield decrease caused by intraspecific competition and lodging (Fioreze & Rodrigues, 2014). Wheat grain yield explained part of SGM variability in two cropping seasons analyzed, similar to results found for sunflower economic performance in Paraná using the same methodology (Ribeiro & Raiher, 2013). Grain yield and price are decisive in determining gross income.…”

Section: Variablesupporting

confidence: 69%

“…Descriptive statistics were used to summarize the data of each variable, followed by analysis of variance and Tukey contrasts test. Subsequently, the data were standardized using Z-score (Hair et al, 2009), and the multivariate analysis was performed in two stages, adapted from Ribeiro & Raiher (2013). First, the data were subjected to Principal Component Analysis (PCA), considering costs variables and grain yield as active ones to extract components, and SGM as supplementary variable, which in turn can have its variability explained by principal components with which they have correlation.…”

Section: Methodsmentioning

confidence: 99%

“…The identification and hierarchization of limiting factors associated to a technical and economic performance are fundamental to fit strategies to increase economic return (Ribeiro & Raiher, 2013). Nevertheless, this information is scarce for wheat production in Brazil and it would contribute to an increase of farmers' income and make wheat a continually attractive option to crop systems in Southern Brazil.…”

Section: Introductionmentioning

confidence: 99%

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Factors related to the economic performance of wheat commercial fields

2019

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The variability of agronomic performance and of input use level of wheat commercial fields allows the identification of the factors with the greatest contribution to its economic performance. The objective of this work was to identify the main factors related to the variability of economic performance in wheat commercial fields in the Southern Region of Paraná State. The study was based on data from 65, 64 and 80 farms in 2013, 2014 and 2015, respectively. The variables evaluated were: costs of fertilizer, herbicide, insecticide, fungicide and seed; grain yield; and simplified gross margin (SGM). Data were subjected to Principal Components Analysis followed by Cluster Analysis. The variability of wheat economic performance was mainly related to grain yield, fertilizers cost and seed costs. Grain yield is one of the most important factors to determination of economic performance of wheat commercial fields in the studied region, and a greater investment in fertilizers and with seeds can decrease it. It must be considered that the cost reduction might be obtained with suitable management practices, and the contribution of items of cost analyzed to economic performance may be different in each cropping season probably due to variations of the cost profile and grain yield.

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Section: Variablesupporting

confidence: 69%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Factors related to the economic performance of wheat commercial fields

2019

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Effect of Varying Nitrogen and Micronutrient Fertilization on Yield Quantity and Quality of Sunflower (Helianthus annuus L.) Achenes

Jarecki

2022

Agronomy

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Sunflower is a good alternative crop in rotation, even in light soils. This is due to the changing climate, economic factors and the need to reduce agriculture pressure on the environment. In this field experiment, the effect of soil nitrogen doses (60 and 90 kg ha−1) and additional foliar fertilization (B, Cu, Fe, Mn, Mo, Zn) on selected plant characteristics, yield and quality of sunflower achenes was assessed. The single-factor experiment was conducted in 2020 and 2021 on Luvisol soil. It was shown that a higher nitrogen dose had a positive effect on plant biometric features, protein content in achenes, as well as LAI (leaf area index) and SPAD (soil plant analysis development) indices. Additionally, the applied double foliar spraying resulted in an increase in yield components and quality of achenes. Sunflower yielding depended on the interaction of weather conditions with fertilization. In the first year of the research, high yields were obtained after applying 60 or 90 kg N ha−1 in combination with double foliar fertilization (3.68 and 3.65 t ha−1, respectively). A significantly lower yield was recorded after applying only the 60 kg N ha−1 dose. This was not statistically confirmed in the second year of the study, with a higher average yield of 3.79 t ha−1. Economic calculations showed that the optimal option was to use 60 kg N ha−1 together with single or double foliar fertilization. Fertilizing with 90 kg N ha−1 in combination with micronutrient spraying was the least profitable.

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Desempenho econômico da cultura do girassol em sistemas de agricultura familiar do sudeste paranaense

Abstract: RESUMO O objetivo deste trabalho foi avaliar o desempenho econômico da cultura do girassol em sistemas de produção

Cited by 2 publications

References 1 publication

Factors related to the economic performance of wheat commercial fields

Factors related to the economic performance of wheat commercial fields

Effect of Varying Nitrogen and Micronutrient Fertilization on Yield Quantity and Quality of Sunflower (Helianthus annuus L.) Achenes

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