Qualidade das operações de preparo de solo por controle estatístico de processo

Milan, Marcos; Fernandes, Ricardo Alves Thomaz

doi:10.1590/s0103-90162002000200009

Cited by 31 publications

(25 citation statements)

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“…Because it was shown to be under statistical control, greater reliability was attributed to the mechanized coffee harvesting process, showing there was a standard maintained during the development of the operation subject only to the effect of common causes, that influenced the process in a controlled manner, without loss of confidence in the process as a whole (MILAN & FERNANDES, 2002).…”

Section: ------------------------------------------------------------mentioning

confidence: 99%

Quality of mechanized coffee harvesting in circular planting system

et al. 2012

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Section: ------------------------------------------------------------mentioning

confidence: 99%

Quality of mechanized coffee harvesting in circular planting system

et al. 2012

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“…Estudos com a aplicação de conceitos e técnicas de qualidade na área agrícola ainda existem em pequena escala, no entanto a sobrevivência da empresa agrícola está ligada à implantação de novas técnicas administrativas baseadas na gestão de qualidade FERNANDES, 2002). Helman e Andery (1995) afirmam que o maior interesse do cliente é que o produto não falhe.…”

Section: Introductionunclassified

Avaliação da distribuição de sementes por uma semeadora de anel interno rotativo utilizando média móvel exponencial

Albiero¹,

Maciel²,

Milan³

et al. 2012

Rev. Ciênc. Agron.

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Resumo -Conceitos de qualidade cada vez mais se tornam essenciais para a sobrevivência da empresa agrícola, pois a importância do aprimoramento das operações agrícolas se faz necessária para a obtenção de resultados viáveis economicamente, ambientamente e socialmente. Uma das dimensões da qualidade é conseguir de conformidade, ou seja, a garantia de execução exata do que foi planejado para atender aos requisitos dos clientes em relação a um determinado produto ou serviço. Os objetivos deste trabalho são avaliar a distribuição longitudinal entre sementes de uma semeadora de anel interno rotativo, e propor a utilização da metodologia estatística da Média Móvel Exponencialmente Ponderada (MMEP) como alternativa para o controle de qualidade da semeadura, quando não há normalidade da distribuição dos dados. Os resultados demonstraram que a MMEP é adequada para a avaliação da qualidade da distribuição longitudinal de sementes, pois concordou com os dados apresentados na estatística descritiva, o que lhe credencia para avaliação de distribuições não normais. Palavras-chave -Uniformidade de distribuição. Controle de Qualidade. Média móvel.Abstract -Quality concepts are essentials for survivor of agricultural companies, therefore, the importancy of improvement of agricultural process is necessary for to get results economically, environmentally and socially viables. One quality dimension is to get a compliance quality, ie, ensure the exact execution than was planned. The subject of this paper is evaluable at longitudinal distribution between seed of a internal ring seeder. The subject of this paper is to evaluate at longitudinal distribution between seed distributed for a internal ring seeder and to propose the use of statistical methodology exponentially weighted moving average (MMEP) like alternative for the quality control of seeders, when there is not normality in data. The results showed that the MMEP is adequate for quality evaluation of longitudinal distribution between seeds, as agreed with the data of descriptive statistic.

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“…Thus, it showed a satisfactory result in the analysis of the other fertilizers that have points out of control, but the potassium chloride obtained a lower variability, consequently a higher quality of the operation, despite some points out of control, and it demonstrated a greater angle of rest in relation to the analyzed fertilizers. Milan & Fernandes (2002) also applied the statistical process control in soil preparation operations and verified lower data variability by controlling process charts and histograms, being close to the Specific Control Limits. These authors emphasized how significant and relevant was the use of statistical process control in soil preparation, facilitating the monitoring of operational quality.…”

Section: Mechanized and Individualized Application Of N-p-k In Combinmentioning

confidence: 80%

Mechanized and Individualized Application of N-P-K in Combined Operations in Sugarcane

et al. 2017

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ABSTRACT:A new concept of fertilizer machine is under development and shows as differential individually fertilizer application, that is sources of N, P and K are applied separately for the purpose of improving the distribution efficiency of the quantities applied. The aim was to compare the quality of the individualized mechanized distribution of N, P and K in combined operations with and without herbicide application, as well as to evaluate the fertilizer application on each side of the fertilizer machine. The experiment was carried out on Cascavel farm, in the municipality of Matão-SP. The experimental design was established according to the criteria of quality control, and variables monitoring carried out in the place during fertilization operation, having the fertilizer distribution operation; simultaneous operation of fertilizer distribution and herbicide application treatments; and two simple operations, fertilizer distribution followed by herbicide application. We concluded that the better operational quality was in two distinct operations. The right side of the fertilizer had the best result because it applied the amount close to the regulated dosage. The distribution of potassium chloride expressed in the control charts greater operational quality compared to other fertilizers.

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Qualidade das operações de preparo de solo por controle estatístico de processo

Cited by 31 publications

References 1 publication

Quality of mechanized coffee harvesting in circular planting system

Quality of mechanized coffee harvesting in circular planting system

Avaliação da distribuição de sementes por uma semeadora de anel interno rotativo utilizando média móvel exponencial

Mechanized and Individualized Application of N-P-K in Combined Operations in Sugarcane

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