Extração e exportação de nutrientes por variedades de cana-de-açúcar cultivadas sob irrigação plena

Oliveira, Emídio Cantídio Almeida de; Freire, Fernando José; Oliveira, Ruthanna Isabelle de; Freire, Maria Betânia Galvão dos Santos; Neto, Djalma Euzébio Simões; Silva, Silas Alves Monteiro da

doi:10.1590/s0100-06832010000400031

Cited by 69 publications

(83 citation statements)

References 10 publications

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“…The TCH exhibited an overall mean of 136.08, which is much higher than the yield of 12-month-old plantations in Brazil. Oliveira et al (2010), working with 11 varieties, noted that the variety RB92579, used in the present study, showed highest TCH and highest P use efficiency, which guarantees good representativeness of the results regarding the response of the crop to the treatments.…”

Section: Resultssupporting

confidence: 71%

Phosphorus fertilization in sugarcane cultivation under different soil managements

Sousa

Brunharo

Furlani

et al. 2017

Rev. bras. eng. agríc. ambient.

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Soil preparation along with its chemical adjustment is the most important step in sugarcane plantation, especially because it provides proper conditions for plant development. The objective of the present research was to evaluate sugarcane response to the application of different phosphorus doses and their location, associated with both minimum soil tillage and conventional soil tillage. The experiment was conducted in a split-split-plot randomized block design, where the main plots were subjected to soil managements (minimum soil tillage or conventional soil tillage), the subplots to phosphorus doses in total area, and the sub-sub-plots to phosphorus doses in the crop rows. The evaluated variables were soil chemical parameters, sugarcane production and sugar production. Minimum tillage led to larger phosphorus accumulation and higher percentage of exchangeable bases in the soil, whereas the highest P dose in total area in the crop rows led to reduction of sugar production.

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Section: Resultssupporting

confidence: 71%

Phosphorus fertilization in sugarcane cultivation under different soil managements

Sousa

Brunharo

Furlani

et al. 2017

Rev. bras. eng. agríc. ambient.

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“…Although the root system of sugarcane is located primarily in the surface layer (0-20 cm), the occurrence of roots in deeper layers is considerable (Battie-Laclau & Laclau, 2009) and promotes the absorption of subsurface mineral N by the plant (Thorburn et al, 2003). The hypothesis that the N mineralization that occurs during the crop development cycle can meet the total N demand of sugarcane plants is supported by the amount of N extracted by sugarcane during the ratoon cycle (from 142 to 179 kg ha -1 ) (Coale et al, 1993;Oliveira et al, 2010). However, it is worth pointing out that the incubation assays for predicting mineralizable N are performed under conditions of controlled humidity, temperature and aeration that are optimal for the soil microbiota.…”

Section: Resultsmentioning

confidence: 99%

Incubation methods for assessing mineralizable nitrogen in soils under sugarcane

Mariano

Leite

Megda

et al. 2013

Rev. Bras. Ciênc. Solo

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SUMMARYConsidering nitrogen mineralization (N) of soil organic matter is a key aspect for the efficient management of N fertilizers in agricultural systems. Long-term aerobic incubation is the standard technique for calibrating the chemical extraction methods used to estimate the potentially mineralizable N in soil. However, the technique is laborious, expensive and time-consuming. In this context, the aims of this study were to determine the amount of soil mineralizable N in the 0-60 cm layer and to evaluate the use of short-term anaerobic incubation instead of longterm aerobic incubation for the estimation of net N mineralization rates in soils under sugarcane. Five soils from areas without previous N fertilization were used in the layers 0-20, 20-40 and 40-60 cm. Soil samples were aerobically incubated at 35 °C for 32 weeks or anaerobically incubated (waterlogged) at 40 °C for seven days to determine the net soil N mineralization. The sand, silt and clay contents were highly correlated with the indexes used for predicting mineralizable N. The 0-40 cm layer was the best sampling depth for the estimation of soil mineralizable N, while in the 40-60 cm layer net N mineralization was low in both incubation procedures. Anaerobic incubation provided reliable estimates of mineralizable N in the soil that correlated well with the indexes obtained using aerobic incubation. The inclusion of the pre-existing NH 4 + -N content improved the reliability of the estimate of mineralizable N obtained using anaerobic incubation.Index terms: Saccharum spp., net N mineralization, aerobic incubation, anaerobic incubation.(

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“…De acordo com Oliveira et al (2010) a extração de P pela variedade SP79-1011 sob irrigação foi de 25 kg ha -1 de P para produzir 155 Mg de colmos, ou seja, 0,16 kg de P para cada Mg de colmo, resultados que se assemelham às médias obtidas no presente estudo.…”

Section: Resultsunclassified

Efeito residual de fontes de fósforo nos atributos químicos do solo, nutrição e produtividade de biomassa da cana-de-açúcar

Caione

Fernandes

Lange

2013

Agraria

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RESUMOEm regiões de clima tropical o efeito residual da fonte de adubo fosfatado é de importância crucial. Objetivou-se avaliar os efeitos da aplicação de fontes de P nos atributos químicos do solo, nutrição e produtividade da cana-de-açúcar durante a cana planta e a primeira e segunda soqueiras. Foram aplicadas, no sulco de plantio, as fontes de P, superfosfato triplo, fosfato de Arad, farinha de ossos (100 kg ha -1 de P 2 O 5 total) e um controle, sem P, nas variedades de cana-de-açúcar IAC86-2480 e SP79-1011. Utilizou-se o delineamento de blocos casualizados em esquema fatorial 4 x 2, com quatro repetições. O trabalho foi realizado no município de Alta Floresta-MT, Brasil, em Latossolo Vermelho Amarelo distrófico. Após cada corte foi avaliado, no solo, o teor de P, Ca e pH. Na planta avaliaram-se a produtividade de fitomassa verde, de matéria seca da parte aérea, a concentração de P na biomassa coletada, a exportação de P e a eficiência agronômica das fontes de P. A farinha de ossos apresentou maior eficiência agronômica, proporcionou maior acúmulo e exportação de P pela cultura, maior teor de Ca e P disponível no solo e aumento do pH. O fosfato natural reativo de Arad aumentou sua eficiência agronômica entre os ciclos de cultivo.Palavras-chave: adubação fosfatada, eficiência agronômica, farinha de ossos, Saccharum spp. Residual effect of phosphorus sources in soil chemical properties, nutrition and biomass productivity of sugarcane ABSTRACTIn tropical regions, the residual effect of phosphate fertilizer source is of crucial importance. This study aimed to evaluate the effects of application of P sources in chemical properties of soil, nutrition and productivity of sugarcane plant and during the first and second ratoon. The sources of P applied in furrows at planting were, triple superphosphate, Arad phosphate, bone meal (100 kg ha -1 P 2 O 5 total) and a control without P, the varieties of sugarcane studied were IAC86-2480 and SP79-1011. A randomized block design in a 4 x 2 factorial was used, with four replications. The study was conducted in the municipality of Alta Floresta-MT, Brazil, in Typic Hapludox. After each cutting, in soil P content, pH and Ca were evaluated. In the plant, the production of green and dry matter of shoots, the concentration of P in the biomass harvested, the export of P and agronomic efficiency of the sources of P were determined. The bone meal had a higher agronomic efficiency resulted in greater accumulation and export of P by crop, higher content of available Ca and P and increase soil pH. The Arad reactive phosphate increased its agronomic efficiency between crop cycles.

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Extração e exportação de nutrientes por variedades de cana-de-açúcar cultivadas sob irrigação plena

Cited by 69 publications

References 10 publications

Phosphorus fertilization in sugarcane cultivation under different soil managements

Phosphorus fertilization in sugarcane cultivation under different soil managements

Incubation methods for assessing mineralizable nitrogen in soils under sugarcane

Efeito residual de fontes de fósforo nos atributos químicos do solo, nutrição e produtividade de biomassa da cana-de-açúcar

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