Atributos químicos e físicos de um Latossolo Amarelo cultivado com feijão-caupi sob diferentes sistemas de irrigação

Amaral, F.; Júnior, Gabriel Barbosa da Silva; Nóbrega, Júlio César Azevedo; Costa, Elaine Martins da; Silva, Alessandro F. T. da; Nóbrega, Rafaela S. A.

doi:10.5039/agraria.v6i3a1155

Cited by 3 publications

(2 citation statements)

References 13 publications

(16 reference statements)

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“…According to the authors, this increase could be explained by the greater water availability for heterotrophic microbiota. However, Amaral et al (2011), when evaluating physical and chemical attributes of an Oxisol cultivated with cowpea under different irrigation regimes, found higher soil fertility in irrigated areas because of increased amounts of base values, cation exchange capacity, and base saturation.…”

Section: Introductionmentioning

confidence: 99%

“…Given that irrigation is crucial for cowpea cultivation in dry periods in the state of Piauí (AMARAL et al, 2011), the use of biological indicators related to decomposition processes of matter organic to evaluate soil quality can provide subsidies for better soil management planning in irrigated areas of the semiarid region of northeast Brazil. Nowadays, these areas are subject to severe desertification, especially in the state of Piauí (CARNEIRO et al, 2012;ARAÚJO et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Microbial activities, carbon, and nitrogen in an irrigated Quartzarenic Neosol cultivated with cowpea in southwest Piauí

Diógenes

Filho

Silva

et al. 2017

SCA

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The aim of this study was to evaluate microbial biomass and total organic carbon and nitrogen of an irrigated Quartzarenic Neosol cultivated with two cowpea cultivars in Bom Jesus, Piauí, Brazil. The experiment was conducted in a randomized experimental block design in split plots. The plots consist of two cowpea cultivars (Aracê and Tumucumaque) and the subplots were composed of five different irrigation regimes (L1 = 108.2; L2 = 214.7; L3 = 287.9; L4 = 426.1, and L5 = 527.7 mm). Soil samples were collected at a depth of 0-0.20 m in order to evaluate basal soil respiration, microbial biomass carbon, metabolic quotient, microbial quotient, content, and storage of soil carbon and nitrogen. Basal soil respiration, microbial biomass carbon, microbial metabolic quotient, and microbial quotient are influenced by the interaction between cowpea cultivars and irrigation. The cultivar Aracê showed greater stimulus to the microbial community, while the irrigation regimes with 214.7 and 287.9 mm (60 and 90% of ETo, respectively) provided the best moisture conditions for microbial activities. Key words: Biological soil properties. Soil nitrogen. Vigna unguiculata. Desertification. ResumoO objetivo deste estudo foi avaliar a biomassa microbiana e os estoques totais de carbono orgânico e nitrogênio de um Neossolo Flúvico irrigado, cultivado com duas cultivares de feijão-caupi, no município de Bom Jesus, Piauí. O experimento foi instalado em delineamento experimental em blocos ao acaso dispostos em parcelas subdivididas, sendo as subparcelas cinco lâminas de irrigação por aspersão (L1=108,2; L2 = 214,7; L3 = 287,9; L4 = 426,1 e L5 = 527,7 mm) e as parcelas duas cultivares de feijão-caupi (Aracê e Tumucumaque). Foram coletas amostras de solo na profundidade de 0-0,20 m para as avaliações da respiração basal do solo, carbono da biomassa microbiana, quociente metabólico, quociente microbiano, teor e estoque de carbono e nitrogênio do solo. A respiração basal do solo, carbono da biomassa microbiana, quociente metabólico e quociente microbiano são influenciados

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microbial activities, carbon, and nitrogen in an irrigated Quartzarenic Neosol cultivated with cowpea in southwest Piauí

Diógenes

Filho

Silva

et al. 2017

SCA

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Indicadores da qualidade química do solo em áreas cultivadas com mamoeiro irrigado

Morais

Maia

Gaudêncio

et al. 2015

Rev. bras. eng. agríc. ambient.

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RESUMO Propôs, neste trabalho, avaliar e comparar alterações químicas em áreas com diferentes tempos de cultivo com mamão formosa no Projeto de Irrigação do Baixo-Açu, RN, em relação à mata nativa da Caatinga. Para a área de referência, mata nativa de Caatinga, foram retiradas vinte amostras simples e em cada uma das cinco áreas cultivadas, uma amostra composta, formada a partir de vinte amostras simples. As características avaliadas foram cálcio, magnésio, potássio, sódio, fósforo, pH e CE e os metais pesados chumbo, níquel, cádmio, cobre, zinco, manganês e ferro; desta forma, observou-se aumento do desvio em relação à área de referência para fósforo e pH em todas as áreas e que a utilização dos índices foi uma ferramenta bastante eficiente na quantificação das alterações ocorridas para cada índice em relação à mata nativa.

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Productivity and Nodulation Cowpea Inoculated in Function of Phosphorus and Potassium

Amaral

Nóbrega

Martins

et al. 2013

JAS

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The cowpea represents one of the most important agricultural species of the brazilian Northeast, and proper management of mineral fertilizer that culture becomes essential to their production. The present work aimed to study the effect of the interaction between potassium and phosphorus in the presence of the inoculant INPA 03-11B in the culture of cowpea for Production Pole of Bom Jesus, Piaui, Brazil. The experiment was conducted in the experimental area of the Federal University of Piaui, Campus of Bom Jesus, PI, about a Quartzarenic Neosol. The experimental design was a randomized block with four replications. The treatments consisted of four levels of potassium (0, 35, 70 and 105 kg K 2 O ha -1 ) and four levels of phosphorus (0, 40, 80 and 120 kg P 2 O 5 ha -1 ). Nodule number, nodule dry and fresh biomass, shoot dry biomass and grain yields were evaluated. The potassium and phosphorus levels and their interaction affected nodulation and parameters indicators of production of cowpea. The interaction between the phosphorus and potassium levels favored the nodulation, shoot dry biomass and grain yield. The highest grain yield of cowpea was obtained with the fertilization of 67.73 kg of P 2 O 5 ha -1 and 35 kg of K 2 O ha -1 .

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Atributos químicos e físicos de um Latossolo Amarelo cultivado com feijão-caupi sob diferentes sistemas de irrigação

Cited by 3 publications

References 13 publications

Microbial activities, carbon, and nitrogen in an irrigated Quartzarenic Neosol cultivated with cowpea in southwest Piauí

Microbial activities, carbon, and nitrogen in an irrigated Quartzarenic Neosol cultivated with cowpea in southwest Piauí

Indicadores da qualidade química do solo em áreas cultivadas com mamoeiro irrigado

Productivity and Nodulation Cowpea Inoculated in Function of Phosphorus and Potassium

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