Rogério Remo Alfonsi's research while affiliated with Instituto Agronômico de Campinas and other places

Publications (17)

Article
Several corn crop regions of the State of São Paulo, Brazil, were studied concerning soil water content during the growing season, related to the cycles of super earlier, earlier and late cultivars in several simulated sowing dates. It was considered the soil water content parameter (ARM) as a result of a ten day water balance model. It was calcula...
Article
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The "extreme value distribution" model (Gumbel) was tested to estimate the probabilities of occurrence of monthly (May throught September) and yearly absolute minimum temperature and frost concerning 20 localities of the State of São Paulo, Brazil. The probability of the density function parameters was estimated for all localities during the studie...
Article
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A caracterização da ocorrência de veranicos para o trigo baseou-se no atendimento da demanda hídrica "ideal" nas diversas fases fenológicas da cultura. Essa demanda foi estimada para períodos de dez dias, variando-se a época de plantio de março a maio, para diferentes regiões paulistas. Considerando-se o déficit de água no solo, caracterizado pela...
Article
A caracterização da ocorrência de veranicos para o trigo baseou-se no atendimento da demanda hídrica "ideal" nas diversas fases fenológicas da cultura. Essa demanda foi estimada para períodos de dez dias, variando-se a época de plantio de março a maio, para diferentes regiões paulistas. Considerando-se o déficit de água no solo, caracterizado pela...
Article
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Foi comparada a eficiência do uso da água pelos cultivares de arroz IR-665-4-5-5, de porte baixo, folhas eretas, e IAC-1246, de porte alto e folhas pendentes, cultivados em duas densidades de plantio (0,30 e 0,60m entre linhas), em Latossolo Roxo de textura argilosa, no Centro Experimental de Campinas. A evapotranspiração real foi determinada atrav...
Article
Full-text available
Foi comparada a eficiência do uso da água pelos cultivares de arroz IR-665-4-5-5, de porte baixo, folhas eretas, e IAC-1246, de porte alto e folhas pendentes, cultivados em duas densidades de plantio (0,30 e 0,60m entre linhas), em Latossolo Roxo de textura argilosa, no Centro Experimental de Campinas. A evapotranspiração real foi determinada atrav...
Article
São propostas equações matemáticas para estimar o total diário de horas abaixo de determinada temperatura-base, em certo período, utilizando-se somente dos valores diários das temperaturas máxima, mínima e das 21 horas (hora local). A comparação entre os totais diários e mensais de "horas de frio" estimados pelas equações propostas e os observados...
Article
Mathematical equations are proposed to estimate the number of h/day in which the air temperature remains below a determined threshold value. Max., min. and 2100 h temp./day are required for the calculation, and large quantities of data can be handled to aid crop zonation studies. Good correlations were obtained between estimated and observed data o...
Article
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The behavior of temperate climate fruit crops in the State of São Paulo - Brazil as function of "dormancy units" (DAMARIO, 1969) was analysed with the object of providing a simple method for mapping areas with aptitude for commercial development of the crop trees. Thermographs from 12 agrometeorological stations located at altitudes varying from 25...
Article
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O grau-dia é uma unidade térmica utilizada, principalmente, na determinação de épocas de plantio e colheita dos vegetais, contribuindo para uma agricultura racional. Pode ser estimado através de dados termométricos, ou seja, de médias mensais de temperaturas máximas e mínimas, obtidas em abrigos meteorológicos padrões, para regiões climaticamente h...
Article
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Multiple regression equations were developed to determine the total monthly degree-days in relation to altitude and latitude in order to estimate the number of heat-units needed by annual crops in localities where meteorological data are not available. Results obtained showed that this method can be used in Sao Paulo, with reasonable probability of...
Article
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Estudou-se o efeito da temperatura do solo sobre a produtividade de cenoura (var. nantes) cultivada em latossolo roxo sob quatro condições: com cobertura de plástico sobre a cultura, e solo nu; sem cobertura de plástico sobre a cultura, e solo com cobertura morta; com cobertura de plástico sobre a cultura, e solo com cobertura morta; e sem cobertur...
Article
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A study based on climate characterization of the different regions in São Paulo state, Brazil, was elaborated, considering the phenological phases of the coffee trees as dependent of meteorological conditions. Water deficiency periods as well as normal and extreme temperatures were considered as limiting factors for the development of coffee trees....
Article
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Drought in Brazil is a very important phenomenon that affects not only agricultural production but also society. The magnitude and large-scale variation of drought are analyzed specifically for São Paulo State. The quantification and monitoring of drought, rainfall distribution, and agricultural management are discussed. Daily climatological data f...

Citations

... Agroecological zoning for the identification of areas suitable for cultivation, as well as for the determination of escape zones (EZ) for South American leaf blight (caused by the fungus Pseudocercospora ulei) have been carried out in Latin America (Brazil, Colombia, and Ecuador) and Asia (Southeast Asia) based on the modeling of climatic and edaphic variables and the use of geographic information systems tools (Carmo et al., 2004;da Silva et al., 2013;de Camargo et al., 1967;de Camargo et al., 2003;Golbon et al., 2019;Ortolani et al., 1983;Pilau et al., 2007;Rivano et al., 2015;Roy et al., 2017) and focused on the use of multicriteria evaluation and multiobjective within the framework of decision support systems. According to Ezzati (2019), these provide essential elements to solve complex problems, because by considering multiple variables, solutions can be generated, but not necessarily optimal solutions. ...
... Similar results were reported by Santos and Costa (1995), who verified increases of 90 and 35% using Araguaia and Guarani cultivars, respectively, when sprinkler irrigation was used rather than relying on rainfall alone. The rice crop water consumption is distributed through the growth stages in the following proportions: 30% at vegetative stage, 55% at reproductive stage and 15% at maturation stage (Brunini et al. 1981; Carvalho Júnior 1987). During the reproductive phase, water deficiency is most harmful at the reductional division (meiosis) and flowering stages (Crusciol 1998). ...
... An example is presented for the first 20 days of January (Table 1) for rice cultivars, considering that this crop has a minimum water requirement of 40 mm in a 10-day period. Camargo et al. (1985) and Alfonsi et al. (1989) defined the best sowing date for different crops based on crop water requirements and rainfall distribution for each critical phenological stage. First of all, the water requirement was determined for each crop for the planting dates. ...
... Para verificar-se a superação ou não da dormência a partir da análise de elementos meteorológicos, são utilizados modelos como o de Angelocci et al. (1979), o qual realiza o somatório do número de horas com temperatura do ar igual ou inferior a 7,2°C (horas de frio). A variedade 'Gala' exige de 500 a 600 horas de frio, enquanto a variedade 'Fuji' requer, em média, de 600 a 700 horas (Embrapa, 2013). ...
... Coberturas do solo sobre a amplitude térmica e a produtividade ... Resultados semelhantes foram constatados por Brunini et al. (1976), avaliando o efeito da cobertura do solo no cultivo da cenoura. Esses autores verificaram que maior amplitude térmica a 5,0 cm de profundidade foi constatada quando se utilizou o filme de polietileno e com solo sem cobertura, ao passo que a menor amplitude e a maior temperatura média foram observadas quando se utilizou o filme de polietileno sobre a cobertura morta. ...
... Where: DD = degree day ( C d); T M = daily maximum temperature ( C); T m = daily minimum temperature ( C); and T b = base temperature ( C). The cumulative DD were calculated considering the base temperature of 10 C, as described in Pedro Júnior, Brunini, Alfonsi, and Angelocci (1977). ...
... These are the thermal and rainfall ranges as well as the types of soils that form the basis of zoning, which then makes it possible to categorise our study area (Martinique) into two distinct zones: suitable or unfit for cultivation. Zoning is obtained using requests in a GIS software (Geographic Information System) allowing to overlay and manipulate monofactorial maps treated at 1/500,000 representing the eco-climatic factors selected and considered essential (Temperature, Rainfall, Soil), (Pinto, H. S., et al., 2001;Evangelista et al., 2002;Barros, M. A., et al., 2006;Meireles, E., et al., 2007;Rosa, 2007;Petek, M. R., et al., 2009;Andrade, G. A., et al., 2012;Carvalho Alves, M., et al., 2013;Medeiros, R. M., et al., 2013;Soto, F., 2013;Wollmann, C. A., et al., 2013;Santos, L. D. P., et al., 2014). The edapho-climatic requirements of Coffea liberica were therefore defined using the world's scientific literature. ...
... For example, for the coffee crop, largely cultivated in the tropics, it is possible to predict the impact of possible climatic changes and on its cultivation. Pinto et al. (2000) outlined the ecologically viable areas for agricultural exploitation of this crop in the State of São Paulo (BR). On the basis of mean historical temperature values and precipitation and water balance, areas suitable for agriculture were determined ( Figure 5). ...