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Navegação Periódicos por título
Itens para a visualização no momento 2496-2515 of 2801
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(Universidade de São Paulo, Escola Superior de Agricultura, 1962-08-22)This paper deals with data obtained in 1961 and 1962 in shaded and unshaded coffee plots at Piracicaba, São Paulo, Brazil. The results can be summarized as follows: a - the production, in shaded and unshaded plots, did not ... -
(Universidade de São Paulo, Escola Superior de Agricultura, 1959)The present paper discusses the data obtained in shade and unshaded coffee plots at Piracicaba, São Paulo, Brazil. The results, analysed statistically, can be summarized as follows: a) unshaded plots produced 17% more than ...
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(Universidade de São Paulo, Escola Superior de Agricultura, 1961-03-04)This paper deals with data obtained in 1959 and 1960 in shaded and unshaded coffee plots at Piracicaba, São Paulo, Brazil. The results can be summarized as follows: a) the production, in shaded and unshaded plots, did not ...
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(Sociedade Brasileira de Química, 2012)The objective of this study was to evaluate the sorption and leaching of thiamethoxam in dystrophic Red Yellow Latosol (LVAd), dystroferric Red Latosol (LVdf) and Red-Yellow Argisol (PVAd) with coffee under the effect of ...
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(Associação Brasileira de Engenharia Agrícola, 2020)The aim of this study was to evaluate and model the hygroscopic equilibrium and isosteric heat curves of pericarp and endosperm tissues of arabica (Coffea arabica) coffee fruit, in different temperature and relative humidity ...
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(Editora UFLA, 2011-09)This paper investigated changes in growth and carbohydrate content of shoots and root systems in response to source-sink manipulation in field-grown coffee trees. The source-sink manipulations were carried out using manual ...
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(Sociedade Brasileira da Ciência das Plantas Daninhas, 2013-01)The objective of this work was to evaluate the coexistence effects of coffee (Coffea arabica) with densities of sourgrass (Digitaria insularis) on crop macronutrient content and plant growth. The experiment was conducted ...
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(Editora UFLA, 2017-01)The development of coffee plant root system changes when subjected to drip irrigation and fertigation. This work aimed to evaluate the effects of different levels of fertigation on the development of coffee root system by ...
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(Universidade Federal de Santa Maria, 2011-04)The coffee production is an economic mainstay for many countries in the world. Brazil is the world’s largest producer and exporter of coffee, being responsible for about 25% of the world production. It is well known that ...
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(Editora UFLA, 2014-07)GIS techniques have been used in many agricultural crops to study and assess the causes of spatial and temporal variability in production. The spatial and temporal variability of the canephora (conilon) coffee productivity ...
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(Editora UFLA, 2020)Detection of spatial variability of data that can improve crop management is a key factor for precision agriculture. In agriculture, there is a need for tools to assist farmers in decision-making about proper nutrient ...
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(Editora UFLA, 2010-09)Coffee is the second most important agricultural exportation product in Brazil, constituting one of the main income sources of the Brazilian economy. The state of Minas Gerais is the country’s biggest coffee producer. ...
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(Editora UFLA, 2011-09)Coffee production has been one of the economy pillars of many tropical countries. Unfortunately, this crop is susceptible to infestation by the coffee-leaf-miner (Leucoptera coffeella (Guérin-Mèneville & Perrottet, 1842)) ...
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(Empresa Brasileira de Pesquisa Agropecuária - Embrapa, 2020)The objective of this work was to evaluate the root system of Conilon coffee (Coffea canephora) and Arabica coffee (Coffea arabica) plants in the soil profile, using semivariograms. The evaluations were carried out in an ...
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(Editora UFLA, 2020)Coffee is a commodity of great economic importance for Brazil and for the state of Paraná. In the 1960s and 1970s, Paraná was responsible for half of coffee production in Brazil. However, after 1975, with the occurrence ...
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(Sociedade Brasileira de Ciência do Solo, 2014-09)Information underlying analyses of coffee fertilization systems should consider both the soil and the nutritional status of plants. This study investigated the spatial relationship between phosphorus (P) levels in coffee ...
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(Sociedade Brasileira de Ciência do Solo, 2011-07)Information on the spatial structure of soil physical and structural properties is needed to evaluate the soil quality. The purpose of this study was to investigate the spatial behavior of preconsolidation pressure and ...
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(Universidade Federal de Viçosa, 2011-03)The combined use of precision agriculture and the Diagnosis and Recommendation Integrated System (DRIS) allows the spatial monitoring of coffee nutrient balance to provide more balanced and cost-effective fertilizer ...
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(Associação Brasileira de Engenharia Agrícola, 2014-11)Precision agriculture based on the physical and chemical properties of soil requires dense sampling to determine the spatial variability of these properties. This dense sampling is often expensive and time-consuming. One ...
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(Escola Superior de Agricultura "Luiz de Queiroz", 2019-03)Awareness of evapotranspiration (ET) and crop coefficient (Kc) is necessary for irrigation management in coffee crops. ET and Kc spatial variabilities are disregarded in traditional methods. Methods based on radiometric ...
Itens para a visualização no momento 2496-2515 of 2801
