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Navegação Periódicos por título
Itens para a visualização no momento 2463-2482 of 2745
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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 ... -
(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 ...
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(Escola Superior de Agricultura "Luiz de Queiroz", 2008-12)Despite the importance of leaf wetness duration for plant disease epidemiology, there has been little attention paid to research on how its variability relates to different cropping situations. The objective of this study ...
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(Universidade Federal de Viçosa, 2012-11)Information on the spatial distribution of particle size fractions is essential for use planning and management of soils. The aim of this work to was to study the spatial variability of particle size fractions of a Typic ...
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(Editora UFLA, 2014-04)The soils of Espírito Santo State are low natural fertility level, which frequently limit crop yields due to deficiencies of some soil elements, however, it presents high production potential. The purpose of this work was ...
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(Sociedade Brasileira de Ciência do Solo, 2009-09)Assessing the spatial variability of soil chemical properties has become an important aspect of soil management strategies with a view to higher crop yields with minimal environmental degradation. This study was carried ...
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(Editora UFLA, 2018-07)The intensive use of machines in agriculture tends to cause soil compaction, which can hamper the expansion of root system and the absorption of water and nutrients, thus affecting the crop development. In view of the ...
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(Editora UFLA, 2010-09)Mapping the plant nutritional condition allows viewing different regions in a cropping area, providing the producers with different criteria to use foliar and soil fertilization. The aim of this study was to evaluate the ...
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(Editora UFLA, 2015-10)Utilizing precision farming techniques along with the Diagnosis and Recommendation Integrated System (DRIS) allows crop management to be improved, thereby making it possible to better control plant nutrition and to assist ...
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(Departamento de Engenharia Agrícola - UFCG, 2010-02)Scientific investigations about crop water requirements are of fundamental importance to the irrigation process. The main objective of this paper is to analyze and to map water requirements of coffee crop in Minas Gerais ...
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(Editora UFLA, 2019-07)The ecophysiological parameters of coffee canopy were mapped throughout the day. Therefore, evaluations were carried out in ‘Catuaí Vermelho’ Coffea arabica L., measuring 1.7 meters. A vertical gradient (from the apex to ...
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(Escola Superior de Agricultura "Luiz de Queiroz", 2009-01)The study of pest distributions in space and time in agricultural systems provides important information for the optimization of integrated pest management programs and for the planning of experiments. Two statistical ...
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(Editora UFLA, 2019-07)The spatial variability of the total chlorophyll content and carotenoids content, starch and soluble sugars of coffee canopy were mapped throughout the day. Therefore, evaluations were carried out in a ‘Catuaí Vermelho’ ...
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(Instituto Oswaldo Cruz, Ministério da Saúde, 2014-02)The composition and seasonal occurrence of sandflies were investigated in coffee agroecosystems in the Soconusco region of Chiapas, Mexico. Insect sampling was performed on three plantations located at different altitudes: ...
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(Sociedade Brasileira de Química, 2014)Fingerprints of self-shaded and sunlight-exposed leaves of the same Coffea arabica plant were obtained to determine metabolic concentration changes owing to different light environments and phenological stages. Leaf extract ...
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(Associação Brasileira de Engenharia Agrícola, 2016-07)The coffee crop requires great spray ability to penetrate into the plant canopy during the application of pesticides. The aim of this study was to evaluate the spray deposition on leaves of coffee plants and the chemical ...
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(Editora UFLA, 2016-07)The coffee leaf extract formulation has been used as resistance inductor in plants and to control phytopathologies. This work aimed to study the influence of spray drying process variables with the use of maltodextrin as ...
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(Associação Brasileira de Engenharia Agrícola, 2019)Agricultural spray adjuvants (ASA) are widely used in pesticide applications to enhance the performance of pesticides. The aim of this research was to investigate the effects of ASA on static surface tension (SST) and ...
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(Escola de Agronomia - UFG, 2021)Para o sucesso do controle fitossanitário no cafeeiro, é importante uma correta deposição de calda ao longo do dossel. Contudo, a estrutura da planta dificulta essa distribuição. Objetivouse avaliar a deposição de um ...
Itens para a visualização no momento 2463-2482 of 2745
