Disponibilidade De Fósforo Para Plantas De  Arroz Avaliada Por Extratores Químicos

Beltrán, Rubén; Silveira, Rodrigo I.; Passos, Michel

doi:10.1590/s0103-90161998000200011

Cited by 3 publications

(5 citation statements)

References 2 publications

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“…Da Silva et al (2010) developed a work using the same methodology and his results confirm those obtained in the present work. Also according to the works developed by Beltrán et al (1998) and Osztoics et al (2005) this fact is related to the larger reactivity of the phosphorite present in its non-acidulated portion which, added to the liming potential of the alkaline biosolid present in the mixtures, corroborated to the increasing verified for soil pH with concomitantly decrease in the soil Al Similarly to the results verified for soil pH and Al 3+ the significant and isolated interaction between level (F<0.01) and source (F<0.05) of P added (Table 3) shows that all the treatments, included specific controls (0% P), decrease the soil potential acidity in relation to the initial value.…”

Section: Resultsmentioning

confidence: 99%

“…The agronomic characteristics of the alkaline biosolid produced were: moisture = 18%, NC (neutralization capacity = ECaCO 3 ) = 93,38%; DA SILVA L.C. et al Attributes of acidity and exchangeable... RCTN (relative capacity of total neutralization) = 67.54%; pH (CaCl 2 0.01 mol dm -3 )= 12.8; N = 4.9 g kg -1 ; P 2 O 5 = 3.47 g kg -1 (or 1.51 g kg -1 of total P); K 2 O = 1.0 g kg -1 ; total S = 1.0 g kg -1 ; total Ca = 193 g kg -1 (CaO = 269,9 g kg -1 ); total Mg = 111 g kg -1 (MgO = 182,7 g kg -1 ); organic carbon = 31.1 g kg - 1 .…”

Section: Methodsmentioning

confidence: 99%

“…For that reason they are more reactive in soils (Korndörfer et al, 1999) and exert further positive effects in the soil acidity attributes and exchangeable calcium and magnesium. Beltrán et al (1998) applied equal agronomic doses of phosphorus from the reactive Alvorada phosphate rock in the soil, single superphosphate and triple superphosphate. They verified that the soil pH was increased for all phosphorus sources.…”

Section: -mentioning

confidence: 99%

“…who also used increasing doses of sewage 01 mol dm -3 ) DA SILVA L.C. et al Attributes of acidity and exchangeable... biosolids and Da Silva et al (2010), Osztoics et al (2005) andBeltrán et al (1998). Tendence curve of mean soil potential acidity according the level of P added to sewage alkaline biosolid from the three sources (**: significant at the level of 99% probability by the F Test) Tendence curve of mean soil potential acidity according the mean soil pH (**: significant at the level of 99% probability by the F Test)…”

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Attributes of Acidity and Exchangeable Cations in Oxisol Fertilized by Phosphate Alkaline Biosolid Atributos De Acidez E Cátions Trocáveis Em Latossolo Fertilizado Por Biossólido Alcalinizado Fosfatado

Silva

Lucchesi²,

Koehler³

2011

RSA

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Alkaline biosolid enriched by phosphorus (P) increase soil extractable P more than applied alone. It also can exert further effects above soil acidity attributes and exchangeable calcium and magnesium. These facts can contribute to the solution of problems with final destination, attracting farmers to use of adequate quantities of these biosolids by reducing his costs with P fertilization and liming operations. The objective of this work was to evaluate the acidity attributes pH (CaCl 2 0.01 mol dm-3), exchangeable aluminum, potential acidity and exchangeable calcium and magnesium on an acidic Oxisol fertilized with alkaline biosolid phosphated with different levels of phosphorus from three sources after common bean grown under greenhouse condition. An alkaline biosolid was phosphate with 0% P, 0.436% P, 0.872% P and 1.745% P from partially acidulated rock phosphate Alvorada, single superphosphate and triple superphosphate. To stablish the treatments was recommended 45.85 kg P ha-1 of P from the levels of P added, except from 0% P. Four levels and 3 sources of P generated 12 treatments with 4 replications. Treatments were applied to 2.5 kg dry weight of Oxisol from Arapoti, PR, Brazil, in vases, which was cultivated with 6 common bean plants (cv. IPR Uirapuru). Under these experimental conditions phosphate alkaline biosolid applied in acidic Oxisol provided the largest increases of soil pH, exchangeable calcium and magnesium and decreases in exchangeable aluminum and potential acidity with the level of 0.436% P from the partially acidulated rock phosphate Alvorada and single superphosphate.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: -mentioning

confidence: 99%

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confidence: 99%

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Attributes of Acidity and Exchangeable Cations in Oxisol Fertilized by Phosphate Alkaline Biosolid Atributos De Acidez E Cátions Trocáveis Em Latossolo Fertilizado Por Biossólido Alcalinizado Fosfatado

Silva

Lucchesi²,

Koehler³

2011

RSA

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“…Alkaline biosolids have organic matter and macro and micronutrients in its composition besides alkaline reaction when applied to soils (Logan & Harrison, 1995). This alkaline reaction is due to the presence of alkaline materials as calcium and magnesium carbonates (CaCO 3 , MgCO 3 ) and calcium oxide and hidroxide (CaO, Ca(OH) 2 ) used in the treatment process (N-Viro Process or single addition of lime and limekiln materials). Alkaline biosolids increase soil pH (Silva et High quantities of sewage alkaline biosolids have been applied to the soils to supply the crop exigencies by nutrients as nitrogen and phosphorus.…”

Section: Introductionmentioning

confidence: 99%

Variáveis De Acidez E Cálcio E Magnésio Trocáveis Num Latossolo Tratado Com Um Biossólido Alcalinizado E Fosfatado

Silva¹,

Lucchesi

Koehler

2010

RSA

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4 The results of extractable phosphorus, accumulated phosphorus and productivity of common bean in this same oxisol (Latossolo VermelhoAmarelo Distrófico típico) are in process of publication, also in english language. 5 Os resultados de P extraível, P acumulado e produção de feijoeiro neste mesmo Latossolo Vermelho-Amarelo Distrófico típico estão em processo de publicação, também em língua inglesa. ACIDITY VARIABLES AND EXCHANGEABLE CALCIUM AND MAGNESIUM ON AN OXISOL TREATED WITH PHOSPHATE ALKALINE BIOSOLID VARIÁVEIS DE ACIDEZ E CÁLCIO E MAGNÉSIO TROCÁVEIS NUM LATOSSOLO TRATADO COM UM BIOSSÓLIDO ALCALINIZADO E FOSFATADO ABSTRACTThe alkaline biosolid enriched by phosphorus (P) can increase the soil extractable P 4 and and exert further effects about soil acidity variables and exchangeable calcium and magnesium. This fact can also contributes to the reduction of problems related to its final destination and attract farmers to the use of adequate quantities of these biosolids in agriculture by reduce his costs with soil fertilizers and liming operations. This work aimed to evaluate the acidity variables and exchangeable calcium and magnesium on an Oxisol treated with an alkaline biosolid that received different levels of phosphorus (P) from three sources after common bean grown under greenhouse condition. An alkaline biosolid received 0% P, 0.436% P, 0.872% P and 1.745% P from the partially acidulated rock phosphate Alvorada, single superphosphate and triple superphosphate. To the treatment establishment was recommended 45.85 kg P ha -1 from the treatments, except from the 0% P. Four levels and 3 sources of P addition generated 12 treatments with 4 replications. Treatments were applied 2.5 kg dry weight of an Oxisol from Contenda, PR, Brazil, in vases which was cultivated with 6 common bean plants (cv. IPR Uirapuru). After the plant harvest the soil analysis showed increases in the soil pH (CaCl 2 0.01 mol dm -3 ), exchangeable calcium, magnesium and decreases in aluminum and potential acidity due to the treatments. The assessed variables showed the larger alterations due to the levels 0.436% of P addition in alkaline biosolid from partially acidulated rock phosphate Alvorada and single superphosphate.Key-words: pH; potential acidity; aluminum; Phaseolus vulgaris. RESUMOBiossólido de esgoto alcalinizado enriquecido com fósforo (P) pode aumentar o P extraível 5 e afetar adicionalmente as variáveis de acidez e cálcio e magnésio trocáveis do solo. Este fato também pode reduzir problemas com sua destinação final e atrair produtores à utilização de quantidades adequadas destes biossólidos na agricultura por reduzir seus custos com operações de adubação e correção de solos. Este trabalho objetivou avaliar as variáveis de acidez e cálcio e magnésio trocáveis num Latossolo Vermelho-Amarelo Distrófico típico tratado com biossólido alcalinizado que recebeu diferentes níveis de fósforo (P) de três fontes após o cultivo do feijoeiro em casa de vegetação. Um biossólido alcalinizado recebeu 0% P, 0,436% P, 0,872% P e 1,745% P...

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Nível crítico de fósforo por diferentes extratores químicos em Neossolo Flúvico alcalino cultivado com milho

Calheiros

Silva

Oliveira

et al. 2012

Agraria

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RESUMODevido à escassez de pesquisas referentes à disponibilidade de P em solos da região semiárida do Nordeste brasileiro, objetivou-se estudar a eficiência de quatro extratores na predição da disponibilidade de P em milho cultivado em um Neossolo Flúvico alcalino do sertão de Pernambuco, e estimar os níveis críticos de P no solo e na parte aérea das plantas. O experimento foi conduzido em vasos de polietileno preenchidos com 4 kg de solo. O delineamento experimental utilizado foi em blocos casualizados, com quatro repetições e seis doses de P (0, 37, 74, 148, 222 e 370 mg dm -3 ). Trinta dias após a aplicação das doses foi realizada a coleta de solo para determinação do P recuperado pelos extratores Mehlich-1, Mehlich-3, Bray-1 e Olsen sendo feita, em seguida, a semeadura do milho. Os extratores Mehlich-1, Mehlich-3, Bray-1 e Olsen diferiram nos teores médios de P extraído. Os teores e os conteúdos de P nas plantas aumentaram linearmente com as doses de P aplicadas ao solo enquanto a massa de matéria seca aumentou quadraticamente. O P extraído pelos extratores correlacionou-se positivamente com o P acumulado nas plantas de milho, apesar dos baixos valores dos coeficientes da correlação. Os níveis críticos de P no solo variaram entre os extratores, sendo o extrator Mehlich-1 o que apresentou maior nível crítico, devido à sua capacidade de extrair mais P do solo. Palavras-chave: P absorvido, P disponível, P extraído Critical phosphorus level by different chemical extractors in an alkaline Fluvent cultivated with corn ABSTRACTDue to lack of research concerning the availability of P in soils of the semiarid Northeastern Brazil, the objective of this research was to study the efficiency of four extractors in predicting phosphorus availability in cultivated corn in an alkaline Fluvent from Pernambuco and estimate the critical levels of P in the soil and in the aerial parts of plants. The experiment was carried out in polyethylene vessels filled with 4 kg of soil. The experimental design was in randomized blocks with four repetitions and six P doses (0, 37, 74, 148, 222 e 370 mg dm -3 ). Thirty days after the P application, soils were collected to determine P recovered by Mehlich-1, Mehlich-3, Bray-1 and Olsen extractors, and after that corn was sown. The used extractors differed statistically in the average levels of extracted P. The P levels and amounts and accumulated in plants increased linearly with P doses applied to the soil, while the dry matter amounts increased in a curved line. The extracted P correlated significantly and positively with P accumulated in corn plants, although the low values of correlations coefficients. The P critical levels in soil changed within extractors, being Mehlich-1 the extractor with the highest critical level, for its greater ability to extract P from the soil.

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Disponibilidade De Fósforo Para Plantas De Arroz Avaliada Por Extratores Químicos

Cited by 3 publications

References 2 publications

Attributes of Acidity and Exchangeable Cations in Oxisol Fertilized by Phosphate Alkaline Biosolid Atributos De Acidez E Cátions Trocáveis Em Latossolo Fertilizado Por Biossólido Alcalinizado Fosfatado

Attributes of Acidity and Exchangeable Cations in Oxisol Fertilized by Phosphate Alkaline Biosolid Atributos De Acidez E Cátions Trocáveis Em Latossolo Fertilizado Por Biossólido Alcalinizado Fosfatado

Variáveis De Acidez E Cálcio E Magnésio Trocáveis Num Latossolo Tratado Com Um Biossólido Alcalinizado E Fosfatado

Nível crítico de fósforo por diferentes extratores químicos em Neossolo Flúvico alcalino cultivado com milho

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