Enxofre disponível para a soja e atividade de arilsulfatase em solo tratado com gesso agrícola

Nogueira, Marco Antônio; Melo, Wanderley José de

doi:10.1590/s0100-06832003000400010

Cited by 29 publications

(25 citation statements)

References 9 publications

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“…No effect of PG application on wheat leaf N concentration under water stress was also reported by Caires et al (2002). Soybean obtains most of the necessary N through symbiosis, resulting in a reduced potential effect of PG on N absorption from the soil, as was observed in this study and also reported by Nogueira and Melo (2003) and Caires et al (2003;2011a).…”

Section: Macronutrient Plant Leaf Tissue Concentrationssupporting

confidence: 83%

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Do Rates and Splitting of Phosphogypsum Applications Influence the Soil and Annual Crops in a No-Tillage System?

Vicensi

Müller

Kawakami

et al. 2016

Rev. Bras. Ciênc. Solo

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ABSTRACT:Applications of phosphogypsum (PG) provide nutrients to the soil and reduce Al 3+ activity, favoring soil fertility and root growth, but allow Mg 2+ mobilization through the soil profile, resulting in variations in the PG rate required to achieve the optimum crop yield. This study evaluated the effect of application rates and splitting of PG on soil fertility of a Typic Hapludox, as well as the influence on annual crops under no-tillage. Using a (4 × 3) + 1 factorial structure, the treatments consisted of four PG rates (3, 6, 9, ) and three split applications (P1 = 100 % in 2009; P2 = 50+50 % in 2009 and 2010; P3 = 33+33+33 % in 2009, 2010 and 2011), plus a control without PG. The soil was sampled six months after the last PG application, in stratified layers to a depth of 0.8 m. Corn, wheat and soybean were sown between November 2011 and December 2012, and leaf samples were collected for analysis when at least 50 % of the plants showed reproductive structures. The application of PG increased Ca 2+ concentrations in all sampled soil layers and the soil pH between 0.2 and 0.8 m, and reduced the concentrations of Al 3+ in all layers and of Mg 2+ to a depth of 0.6 m, without any effect of splitting the applications. The soil Ca/Mg ratio increased linearly to a depth of 0.6 m with the rates and were found to be higher in the 0.0-0.1 m layer of the P2 and P3 treatments than without splitting (P1). Sulfur concentrations increased linearly by application rates to a depth of 0.8 m, decreasing in the order P3>P2>P1 to a depth of 0.4 m and were higher in the treatments P3 and P2 than P1 between 0.4-0.6 m, whereas no differences were observed in the 0.6-0.8 m layer. No effect was recorded for K, P and potential acidity (H+Al). The leaf Ca and S concentration increased, while Mg decreased for all crops treated with PG, and there was no effect of splitting the application. The yield response of corn to PG rates was quadratic, with the maximum technical efficiency achieved at 6.38 Mg ha -1 of PG, while wheat yield increased linearly in a growing season with a drought period. Soybean yield was not affected by the PG rate, and splitting had no effect on the yield of any of the crops. Phosphogypsum improved soil fertility in the profile, however, Mg 2+ migrated downwards, regardless of application splitting. Splitting the PG application induced a higher Ca/Mg ratio in the 0.0-0.1 m layer and less S leaching, but did not affect the crop yield. The application rates had no effect on soybean yield, but were beneficial for corn and, especially, for wheat, which was affected by a drought period during growth.

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Section: Macronutrient Plant Leaf Tissue Concentrationssupporting

confidence: 83%

“…However, in most cases, no significant yield increases were observed in Fabaceae species, e g., in soybean (Nogueira and Melo, 2003;Caires et al, 2003Caires et al, , 2006Caires et al, , 2011aNeis et al, 2010).…”

Section: Introductionmentioning

confidence: 93%

Do Rates and Splitting of Phosphogypsum Applications Influence the Soil and Annual Crops in a No-Tillage System?

Vicensi

Müller

Kawakami

et al. 2016

Rev. Bras. Ciênc. Solo

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“…Sabe-se que as leguminosas, em sua maioria, fixam quantidades superiores a 50 kg de N. Vitti et al (1979), utilizando cinco espécies de leguminosas num Latossolo Vermelho-Amarelo fase arenosa, verificaram aumento de C, Al, H e CTC e diminuição nos teores das bases trocáveis (K, Ca, Mg), P e pH do solo, com a incorporação de adubos verdes. Por sua vez, Nogueira et al (1989) constataram incrementos nos teores de matéria orgânica e cálcio e redução nos teores de fósforo em solo aluvial, quando cultivado com Crotalaria juncea como adubo verde.…”

Section: Introductionunclassified

Características químicas de solo e rendimento de fitomassa de adubos verdes e de grãos de milho, decorrente do cultivo consorciado

Heinrichs

Vitti

Moreira

et al. 2005

Rev. Bras. Ciênc. Solo

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“…Os valores médios de P e Fe encontrados foram de 3,5 g kg -1 e 188 mg kg -1 , respectivamente, sendo considerados adequados para a cultura da soja (Embrapa, 2008). Nogueira & Melo (2003) também não observaram alterações no teor foliar de P no primeiro ano de cultivo de soja após a aplicação do gesso agrícola. Em outras condições, Caires et al (2003) observaram aumentos no teor foliar de P, em que se utilizou gesso, em três safras de soja consecutivas.…”

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Fixação biológica de nitrogênio e teores foliares de nutrientes na soja em função de doses de molibdênio e gesso agrícola

et al. 2011

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RESUMOA competitividade econômica da soja brasileira no mercado mundial se deve, em grande parte, aos benefícios da fixação biológica do nitrogênio na cultura. O trabalho foi conduzido a campo, sob sistema plantio direto, em condição de sequeiro, no Município de Maracaju-MS, com o objetivo de avaliar a nodulação, o crescimento, nutrição mineral e produtividade de grãos da soja submetida a diferentes doses de gesso agrícola e molibdênio. Foi utilizado o delineamento experimental de blocos ao acaso, com cinco repetições e esquema de parcelas subdivididas, sendo as parcelas representadas por quatro doses de gesso agrícola (0, 1.000, 2.000 e 3.000 kg ha -1 ) e as subparcelas, por quatro doses de molibdênio (0, 20, 40 e 60 g ha -1 ). Não houve efeito da interação gesso x Mo sobre a produtividade da soja. O gesso agrícola não influencia no teor foliar de N e na produtividade. O Mo proporciona incrementos na produtividade e no teor de proteínas dos grãos. Termos para indexação:Glycine max, Bradyrhizobium japonicum, nutrição de planta. ABSTRACTThe economic competitiveness of Brazilian soybeans on the world market occurs, in large part, due to the benefits of biological nitrogen fixation in this crop. The field experiment was carried out in Maracaju, Mato Grosso do Sul State, Brazil, under no-tillage system, in rainfed condition. The aim was to evaluate nodulation, growth, mineral nutrition and grain yield of soybeans under different doses of gypsum and molybdenum. The experimental design used was a randomized block with five replicates and arranged in a split-plot squeme, with the plot represented by four doses of gypsum (0, 1.000, 2.000 and 3.000 kg ha -1 ) and the subplots by four doses of molybdenum (0, 20, 40 and 60 g ha -1 ). There were no interaction effects of Mo x gypsum for grain yield. Gypsum has no influence in the N leaf content and grain yield. Mo increases grain yield and protein levels in the grain.

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Enxofre disponível para a soja e atividade de arilsulfatase em solo tratado com gesso agrícola

Cited by 29 publications

References 9 publications

Do Rates and Splitting of Phosphogypsum Applications Influence the Soil and Annual Crops in a No-Tillage System?

Do Rates and Splitting of Phosphogypsum Applications Influence the Soil and Annual Crops in a No-Tillage System?

Características químicas de solo e rendimento de fitomassa de adubos verdes e de grãos de milho, decorrente do cultivo consorciado

Fixação biológica de nitrogênio e teores foliares de nutrientes na soja em função de doses de molibdênio e gesso agrícola

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