Browsing by Author Spehar, Carlos Roberto

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Showing results 1 to 6 of 6
Issue DateTitleAuthor(s)
2013Agronomic efficiency of potassium fertilization in lettuce fertilized with alternative nutrient sourcesSilva, Douglas Ramos Guelfi; Marchi, Giuliano; Spehar, Carlos Roberto; Guilherme, Luiz Roberto Guimarães; Faquin, Valdemar
2016Ammonia volatilization from enhanced-efficiency urea on no-till maize in brazilian cerrado with improved soil fertilityCancellier, Eduardo Lopes; Silva, Douglas Ramos Guelfi; Faquin, Valdemar; Gonçalves, Bruno de Almeida; Cancellier, Leandro Lopes; Spehar, Carlos Roberto
2012Characterization and nutrient release from silicate rocks and influence on chemical changes in soilSilva, Douglas Ramos Guelfi; Marchi, Giuliano; Spehar, Carlos Roberto; Guilherme, Luiz Roberto Guimarães; Rein, Thomaz Adolpho; Soares, Danilo Araújo; Ávila, Fabrício William
2016Nitrogen loss by volatilization of nitrogen fertilizers applied to coffee orchardDominghetti, Anderson William; Guelfi, Douglas Ramos; Guimarães, Rubens José; Caputo, André Luiz Carvalho; Spehar, Carlos Roberto; Faquin, Valdemar
2020Solubility and availability of micronutrients extracted from silicate agromineralsMarchi, Giuliano; Guelfi-Silva, Douglas Ramos; Malaquias, Juaci Vitória; Guilherme, Luiz Roberto Guimarães; Spehar, Carlos Roberto; Martins, Eder de Souza
2014Yield, nutrient uptake and potassium use efficiency in rice fertilized with crushed rocksSilva, Douglas Ramos Guelfi; Spehar, Carlos Roberto; Marchi, Giuliano; Soares, Danilo de Araújo; Cancellier, Eduardo Lopes; Martins, Éder de Souza