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Navegação Periódicos por título
Itens para a visualização no momento 2436-2455 of 2746
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(Universidade Federal de Viçosa, 2011-11)Coffee cultivation via central-pivot fertigation can lead to fertilizer losses by soil profile internal drainage when water application is excessive and soils have low water retention and cation adsorption capacities. This ... -
(Departamento de Engenharia Agrícola - UFCG, 2020)The form of occupation of the state of Rondônia, Brazil, favored the extensive agriculture, which resulted in a fast deforestation. The removal of forests and inadequate soil management and use, combined with a hot and wet ...
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(Departamento de Engenharia Agrícola - UFCG, 2009-05)Basic information for a rational soil-water management of the coffee crop is still insufficient, particularly under irrigated conditions. Of great importance for the estimation of water requirements of coffee crops are ...
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(Associação Brasileira de Engenharia Agrícola, 2013-03)Irrigation management can be established, considering the soil water potential, as the limiting factor for plant growth, assuming the soil water content between the field capacity and the permanent wilting point as ...
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(Sociedade Brasileira de Química, 2005)This paper describes a Solid Phase Microextraction method (SPME-CG) to the determination of organophosphorus pesticides in samples of fresh-water fish, water, potatoes, guava and coffee by capillary gas chromatography with ...
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(Sociedade Brasileira de Química, 2015)Solubility and bioaccessibility of Ba, Ca, Cr, Cu, Fe, Mg, Mn, P, Sr and Zn in slim coffees were investigated using an in vitro method. Two different compositions of solutions simulating gastric and intestinal juices were ...
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(Editora UFLA, 2015-11)Brazil imports most of the potassium that it consumes in agriculture, however, such huge external dependence can be minimized with the use of alternative local K bearing rocks. This experiment was conducted with the objective ...
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(Universidade Federal de Santa Maria, 2009-03)O objetivo neste trabalho foi avaliar a influência do sombreamento, durante o período de desenvolvimento de gemas florais, sobre o desenvolvimento e maturação dos frutos, produção e tamanho dos grãos de Coffea arabica L. ...
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(Universidade de São Paulo, Escola Superior de Agricultura, 1967-02-15)This paper deals with data obtained in 1963, 1964, 1965 e 1966 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, ...
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(Universidade de São Paulo, Escola Superior de Agricultura, 1971-10-18)Os dados obtidos durante os anos de 1967 a 1971 (2 biênios: 1967/1968 e 1670/1971) no cafèzal da E.S.A. "Luiz de Queiroz", parte sombreada e parte a pleno sol, foram estudados no presente trabalho, complementando aqueles ...
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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 ...
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(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 ...
Itens para a visualização no momento 2436-2455 of 2746
