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Sugarcane yield and quality using soil magnetic susceptibility
Catelan,Michelle Gimenes; Marques Júnior,José; Siqueira,Diego Silva; Gomes,Romário Pimenta; Bahia,Angélica Santos Rabelo de SouzaABSTRACT The concept of production environments, which is widely used to classify the yield potential of soils, and magnetic susceptibility (MS), is emerging as an important tool for mapping ultra-detailed areas. Given this background, this paper aims to evaluate the use of MS as a tool for the identification of areas with different potential the enhancing of sugarcane yield and quality, and the allocation of v...
SAMPLING DENSITY FOR CHARACTERIZING THE PHYSICAL QUALITY OF A SOIL UNDER COFFEE...
Silvero,Nélida E. Q.; Marques Júnior,José; Siqueira,Diego S.; Gomes,Romário P.; Costa,Milene M. R.ABSTRACT The elaboration of maps to characterize the spatial variability of soil attributes assists in the strategic planning and decision making of agricultural managers. Precision and accuracy of maps are related to the ideal sampling density to characterize the variability pattern. This study was conducted with the aim of identifying the sampling density to represent the variability of soil physical quality ...
Magnetic Susceptibility of Soil to Differentiate Soil Environments in Southern ...
Ramos,Priscila Vogelei; Dalmolin,Ricardo Simão Diniz; Marques Júnior,José; Siqueira,Diego Silva; Almeida,Jaime Antonio de; Moura-Bueno,Jean MichelABSTRACT The interest in new techniques to support digital soil mapping (DSM) is increasing. Numerous studies pointed out that the measure of magnetic susceptibility (MS) can be extremely useful in the identification of properties related with factors and processes of soil formation, applied to soil mapping. This study addressed the effectiveness of magnetic soil susceptibility to identify and facilitate the di...
Cor do solo na identificação de áreas com diferentes potenciais produtivos e qu...
Carmo,Danilo Almeida Baldo do; Marques Júnior,José; Siqueira,Diego Silva; Bahia,Angélica Santos Rabelo de Souza; Santos,Henrique MenezesResumo O objetivo deste trabalho foi verificar a eficácia da cor do solo na identificação de áreas com diferentes potenciais produtivos e qualidade de café, em Argissolo Vermelho-Amarelo desenvolvido de arenito, no Planalto Ocidental Paulista, no Estado de São Paulo. Coletaram-se 173 amostras em 39 ha, para a determinação de matiz, valor, croma e índice de avermelhamento do solo, com base nos dados da espectros...
Magnetic susceptibility for characterizing areas with different potentials for ...
Siqueira,Diego Silva; Marques Júnior,José; Teixeira,Daniel De Bortoli; Matias,Sammy Sidney Rocha; Camargo,Livia Arantes; Pereira,Gener TadeuAbstract The objective of this work was to evaluate the use of magnetic susceptibility for characterizing the spatial variability of soil attributes and identifying areas with different potentials for sugarcane (Saccharum spp.) production. Samples were collected at 110 points (1 per 7 ha) in the layers of 0.00-0.20 and 0.20-0.40 m, to determine the magnetic susceptibility and physical and chemical attributes of...
FERRAMENTAS MATEMÁTICAS, SUSCETIBILIDADE MAGNÉTICA E MODELOS DE PAISAGEM APLICA...
Matias,Sammy Sidney Rocha; Marques Júnior,José; Pereira,Gener Tadeu; Siqueira,Diego SilvaA identificação de padrões de variabilidade dos atributos do solo permite o uso e a ocupação do solo de maneira sustentável. O objetivo deste trabalho foi delimitar áreas de manejo específico utilizando ferramentas matemáticas, suscetibilidade magnética e modelos de paisagem. A área de estudo localiza-se no município de Guariba, SP. Escolheu-se uma área de 110 ha, onde foram identificadas e mapeadas três superf...
SPATIAL UNCERTAINTY OF NUTRIENT LOSS BY EROSION IN SUGARCANE HARVESTING SCENARIOS
Mendonça,Patrícia Gabarra; Silva Júnior,João Fernandes da; Oliveira,Ismênia Ribeiro de; Teixeira,Daniel De Bortoli; Moitinho,Mara ReginaThe assessment of spatial uncertainty in the prediction of nutrient losses by erosion associated with landscape models is an important tool for soil conservation planning. The purpose of this study was to evaluate the spatial and local uncertainty in predicting depletion rates of soil nutrients (P, K, Ca, and Mg) by soil erosion from green and burnt sugarcane harvesting scenarios, using sequential Gaussian simu...
Mapeamento do fósforo adsorvido por meio da cor e da suscetibilidade magnética ...
Peluco,Rafael Gonçalves; Marques Júnior,José; Siqueira,Diego Silva; Pereira,Gener Tadeu; Barbosa,Ronny Sobreira; Teixeira,Daniel de BortoliO objetivo deste trabalho foi avaliar a possibilidade de se mapear o fósforo adsorvido por meio da avaliação da cor e da suscetibilidade magnética do solo. O experimento foi realizado em área de cana-de-açúcar com 380 ha, que compreendia quatro tipos de Latossolos, com diferentes texturas e fertilidades naturais. Foram coletadas 241 amostras de solo, na profundidade de 0,00-0,25 m. O índice de avermelhamento do...
Field-scale spatial correlation between contents of iron oxides and CO2 emissio...
Bahia,Angélica Santos Rabelo de Souza; Marques Júnior,José; Panosso,Alan Rodrigo; Camargo,Livia Arantes; Siqueira,Diego SilvaSoil CO2 emission (FCO2) is one of the main sources of carbon release into the atmosphere. Moreover, FCO2 is related to soil attributes governing the transfer of gases from soil to the atmosphere. This study aimed firstly to describe the spatial variability of hematite (Hm), goethite (Gt), iron extracted with sodium dithionite-citrate-bicarbonate (Fed) contents, soil CO2 emission (FCO2) and free-water porosity ...
Characterization of potential CO2 emissions in agricultural areas using magneti...
Leal,Fábio Tiraboschi; França,Ana Beatriz Coelho; Siqueira,Diego Silva; Teixeira,Daniel De Bortoli; Marques Júnior,José; Scala Júnior,Newton LaABSTRACTSoil CO2 emissions (fCO2) in agricultural areas have been widely studied in global climate change research, but its characterization and quantification are restricted to small areas. Because spatial and time variability affect emissions, tools need to be developed to predict fCO2 for large areas. This study aimed to investigate soil magnetic susceptibility (MS) and its correlation with fCO2 in an agricu...