http://repositorio.ufc.br/handle/riufc/45 2026-06-10T18:49:48Z 2026-06-10T18:49:48Z Silva, Luiz Artur Clemente da http://repositorio.ufc.br/handle/riufc/74888 2023-11-08T12:42:28Z 1982-01-01T00:00:00Z

Título: Evolução da estrutura agrária do Estado do Ceará Autor(es): Silva, Luiz Artur Clemente da Abstract: This paper deals with the study of the evolution of the agrarian structure in the State of CeaH, Brazil, from 1920 on. The agrarian census issued by IBGE (Brazilian Institute of Geography and Statistics) were used as data source and the following occurrences were observed: 1) Land tenure was highly concentrated in the State of Cear, in 1920. Furthermore inequality increased in the following decades. 2) The rate of effective land occupation rose from 59% in 1940 to $2% in 1970. This movement was followed by an increase of the cultivated land, mainly in those properties up to 10 ha of total area. These properties dedicated 71% of their lands to crops in 1970, while those with areas of 1,000 ha or more dedicated only 9%. 3) From 1960 to 1975 the increase of the degree of concentration of land tenure was not so pronunced because of the multiplication of the number of small holdings in the State from 1970 to 1975. This process was common to all regions of the State but it was more evident in the Northwest. However the highest concentration occurred in the region of Fortaleza and the lowest concentration occurred in the South, which is an old region of colonization where the properties were already subdivided by inheritance. 4) The labor force in agriculture in the State, from 1960 to 1975, increased at a geometrical rate of 1.5%; the highest population concentration occurred in properties up to 10 ha of area and the growth rate was 6% in the same period which made these properties use labor more intensively. 5) The type of labor used in the sector is predominatly familiar, mainly in the smaller properties, while in the larger ones there is a predominancy of the categories employee ("assalariado") and sharecropper ("parceiro"); this latter type occurs because this is a way by which the big farmers obtain an extra profit from lands that otherwise would not be used. 6) The level of mechanization and use of ferti lizers is too low in the State and among those farmers using fertilizers in 1975, 71.8% used only organic manure. Tipo: Dissertação

1982-01-01T00:00:00Z Biserra, José Valdeci http://repositorio.ufc.br/handle/riufc/74887 2023-11-08T13:30:30Z 1971-01-01T00:00:00Z

Título: Análise de relações fator-produto na cultura do milho em Jardinópolis e Guaíra, Estado de São Paulo, ano agrícola 1969/70 Autor(es): Biserra, José Valdeci Abstract: The main objective of this study was to estimate a corn production function for the "município" (county) of Jardinópolis and another for the "municipio" of Guaira.From these functions, the following specific objectives were pursued: (1) to estimate the average and marginal productivities of productive resources utilized in corn production; (2) to determine the returns to scale; (3) to estimate the "optimum" allocation of conventional inputs under the price tens prevailing at the time of the study; (4) to estimate the marginal rate of substitution between production factors; (5) to make an economic interpretation of the results in order to explore the possibilities of change; (6) to estimate the contribution of the farmer formal education and of the rural extension activities to production. The basic information analized in this study was obtained through direct interviews with farmers of a randon sample taken from a list of farmers registered at INCRA in the "municipios" of Jardinópolis and Guaíra. The sample was composed of 74 observations in the "municipio" of Jardinopólis and 80 in Guaira, relative to the agricultural year 1969/70. However, in view of the inconsistency of the information contained in some of the questionnaires and also the fact that some of the farmers did not grow corn on a commercial scale, the research was based on 60 observations for Jardinópolis and 64 for Guaíra. In order to estimate the production functions which "best" represent the factor-product relationships and were adapted to the objectives of the study, twenty seven equations were tested separately, six of which with the linear model and twenty-one with the Cobb-Douglas model. Thirteen of the equations tested with the latter model, were for the "município" of Jardinópolis and eight for the "município" of Guaíra. The choice of the "best" equations was based on the following criteria: (a) consistency of the results with the principles which rule the production relationships; (b) statistical significance of the regression coefficients; (c) value of the correlation coefficients between independent variables; (d) magnitude of the multiple determination coefficient. The adjustment of the estimate equations was made by the method of least squares and the electronic computation of the original statistical data was made at the "Centro de Computação Eletrônica" of the "Escola Superior de Agricultura "Luiz de Queiroz". Two of the specific objectives of the study, that is, estimation of marginal rates of substitution between factors and the deter mination of the "optimum" level could not be reached in view of the inference referring to the complementarily among factors. Because of the problem of multicolinearity two equations were selected for each "município". Tipo: Dissertação

1971-01-01T00:00:00Z Sousa Filho, Antônio de Albuquerque http://repositorio.ufc.br/handle/riufc/74726 2023-10-20T18:08:48Z 1972-01-01T00:00:00Z

Título: Setting guidelines for "an administrative support" to carry out extension education program at the School of Agronomy of the Federal University of Ceará - Brazil Autor(es): Sousa Filho, Antônio de Albuquerque Abstract: The extension function within EAUFC is felt today as a necessary activity to be carried out. However, there are obstacles in doing it. Among others, the writer of this study feels that an adequate administrative support (understood here in a broad sense) is the key factor. Because of this, some administrative guidelines necessary to improve administrative support in order to help those Extension programs within EAUFC have been considered here. In order to have a better understanding of adequate functions and administrative support to carry out the extension function within Brazilian higher educational institutions, and consequently within EAUFC, some bibliographical material was reviewed. This bibliography was related to the roles of colleges of agriculture and universities in developing countries, which involves economic, social and cultural elements and the intensity within each one; what is general and agricultural extension in terms of different philosophy, approaches used and correlations between them; administrative support to carry out the extension function based on administrative principles and techniques. Tipo: Dissertação

1972-01-01T00:00:00Z Azevedo, Roberto de http://repositorio.ufc.br/handle/riufc/74718 2023-10-25T14:14:34Z 1971-01-01T00:00:00Z

Título: Comercialização de abacate, banana, citrus e manga, no mercado atacadista da Zona da Mata, Minas Gerais Autor(es): Azevedo, Roberto de Tipo: Dissertação

1971-01-01T00:00:00Z