Morettin Bussab Estatistica Basica 6ª edicao joseliza Amadeu. Uploaded by. joseliza Amadeu. Download with Google Download with Facebook. Bussab, W.O. and Morettin, P.A. () Estatística básica. 5th Edition, Saraiva, Sao Paulo. has been cited by the following article: TITLE: Climatic Variations and . Request PDF on ResearchGate | Basic Statistics (Estatistica Basica, The Student t test (Morettin & Bussab, ) was used to check for possible statistically.
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BUSSAB E MORETTIN Estatística Básica 6a Edição ( 1)
In agricultural systems in areas of Cerrado are used intercropped with maize and perennial basixa, because tolerates partial shade Carvalho and Amabile, Sample size to estimate the average of each character in C. Moreover, the statistical values revealed existence of genetic variability among C.
The legumes, in addition to providing similar benefits to other species, have the ability to accumulate N through biological fixation Silva et al. These results confirm the variability among the variables and among green manure species, corroborating the results obtained by Cargnelutti Filho et al. Although the data can produce reliable results in a given study, it is important to determine the sample size in order to estimate the average of each variable, with high confidence and a given estimation error.
However, according to the central limit theorem, even if the basic population is not normal, the distribution of the sample mean will be approximately normal for samples greater than 30 observations Fonseca and Martins, ; Bussab and Morettin, Porto Alegre, Bookman, p.
Variables evaluated in C. Considering these same parameters for the D. The sample size is directly proportional to the variability of the variables under study and to the desired confidence degree in the estimate and inversely proportional to the estimation error allowed, initially established by the researcher Bar-betta et al.
Given these considerations in relation to normality, it can be inferred that the data from these variables provide credibility to the scaling of the sample size study. Tamanho da amostra para bussba da biomassa e produtividade de Canavalia ensiformis e Dolichos lablab.
It is important to mention that given the observed results, the jack bean provides greater dry mass production and consequently greater soil cover in relation to D.
Estatística Básica – Morettin e Bussab | Rodolfo Nunes –
The calculation of central tendency, variability, asymmetry, kurtosis and Lilliefors test relatively to morphological variables fresh mass, dry mass and C. In this scenario, the present research aimed to determine the sample size for the estimation of biomass and productivity expected values of Canavalia ensiformis and Dolichos lablab. Embrapa Cerrados, bbasica p.
Among the various botanical families species that can be grown as green manures, stand out those of the Fabaceae family. These results showed lower magnitude than those observed by Melo that in evaluating the fresh and dry mass production in different green manures did not identify statistical difference in the C. These processes result in morfttin that often generate the inefficiency of agricultural systems, with frequent need for interventions through conservation practices to maintain the productive potential of the soil.
Moreover, this is a crop that can be considered for family farms because of its high seed production and high prices in bsica market. Como citar este artigo.
Among the desirable characteristics for selection of species for green manure, stands out mainly dry mass production, because it is related to the capacity to increase nutrient by symbiosis with microorganisms, soil cover and recycling of nutrients Chaves and Calegari, At maturation, 45 plants were randomly selected in the experimental area of each crop to determine fresh mass, dry mass and productivity.
Thus, the objective of this research was to determine the sample size to estimate biomass and productivity of C. No base fertilization and coverage for any culture were used. Forty five plants were randomly selected in the experimental area of each crop to determine fresh mass, dry mass and yield.
It does not fit in this study the judgment of maximum estimation error acceptable, getting the use this information to the researcher for his experimental design.
Teodoro 1Larissa P. Conclusions Canavalia ensiformi showed significant higher values for the mean fresh mass production, dry mass and productivity in relation to Dolichos lablabbeing recommended for cultivation in Brazilian Cerrado. Results and Discussion The calculation of central tendency, variability, asymmetry, kurtosis and Lilliefors test relatively to morphological variables fresh mass, dry mass and C.
In this context, green manure becomes fundamental to the Cerrado region, because it promotes protection, improvement and maintenance of soil quality, as well as substantial increases in soil organic matter and nutrients, benefiting agroecosystems Carvalho et al. Sample size to estimate biomass and productivity of Canavalia ensiformis and Dolichos lablab. The Cerrado occupation has occurred quickly, based on intensive production systems, which have increased the processes of soil degradation Silva et al.
In the Cerrado of Central Brazil is sown until the end of the rainy season, because of drought resistance and little sensitivity to photoperiod Calegari et al. However, other factors must be analyzed for planning experiments with these green manures, such as seed germination, plant density, spacing to be used and type of harvesting and weeding manual or mechanical.
The spacing used was 0. Canavalia ensiformi showed significant higher values for the mean fresh mass production, dry mass and productivity in relation to Dolichos lablabbeing recommended for cultivation in Brazilian Cerrado.