Disponibilidade de cobre, ferro, manganês e zinco em solos sob pastagens na Região do Cerrado

Vendrame, Pedro Rodolfo Siqueira; Brito, Osmar Rodrigues; Quantin, Cécile; Becquer, Thierry

doi:10.1590/s0100-204x2007000600013

Cited by 29 publications

(24 citation statements)

References 15 publications

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“…Conforme Consolini & Coutinho (2004) a disponibilidade no solo e a absorção de Zn pelas culturas diminuem com o aumento do pH do solo; no entanto, para este estudo o Zn não se correlacionou com pH mas houve, sim, correlação linear e positiva entre Zn:Ca e Zn:Mg, mesmo que com valores de R 2 inferiores a 0,6; apesar disto, ressalta-se que o Zn é um dos micronutrientes mais limitantes para o aproveitamento agrícola dos solos do cerrado, conforme salientado por Vendrame et al (2007).…”

Section: Atributos Químicos Do Solounclassified

Atributos químicos e estabilidade de agregados sob diferentes culturas de cobertura em Latossolo do cerrado

Santos

Silveira

Marchão

et al. 2012

Rev. bras. eng. agríc. ambient.

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Objetivou-se, com este trabalho, avaliar o efeito de diferentes culturas de cobertura sobre os atributos químicos e a estabilidade de agregados de um Latossolo do cerrado, sob plantio direto. O estudo foi conduzido em área experimental na Embrapa Arroz e Feijão, em Santo Antônio de Goiás, GO. As culturas de cobertura avaliadas foram: braquiária, milho em consórcio com braquiária (integração lavoura-pecuária), guandu anão, milheto, capim mombaça, sorgo granífero, estilosantes e crotalária. As amostras foram coletadas em abril de 2005 e 2006. O delineamento experimental foi o de blocos completos ao acaso com quatro repetições e os tratamentos arranjados em esquema fatorial 8 x 2, sendo oito culturas de cobertura e duas profundidades de amostragem do solo: 0-0,10 e 0,10-0,20 m. As culturas de cobertura influenciam, de forma diferenciada, os valores de pH e os teores de cálcio, magnésio, alumínio, fósforo, potássio, cobre, zinco e ferro do solo. O tratamento estilosantes tem maior poder em acidificar o solo. A agregação do solo varia com as culturas de cobertura e com a profundidade.

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Section: Atributos Químicos Do Solounclassified

Atributos químicos e estabilidade de agregados sob diferentes culturas de cobertura em Latossolo do cerrado

Santos

Silveira

Marchão

et al. 2012

Rev. bras. eng. agríc. ambient.

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“…In the case of Si, the relative removal values obtained were from 17 to 22 %, as observed by Ma et al (1989). Zinc has been the most limiting micronutrient for growing rice in Cerrado soils, possibly because of the low availability in these soils (Vendrame et al, 2007) and because it is the micronutrient removed in the greatest proportions by the rice crop (Table 1).…”

Section: Resultsmentioning

confidence: 65%

Micronutrient and Silicon Uptake and Removal by Upland Rice Cultivars with Different Plant Architecture

Crusciol

Filho

Fernandes

et al. 2016

Rev. Bras. Ciênc. Solo

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Upland rice cultivars manifest different nutritional demands. A field study was conducted to quantify the extraction, distribution, and removal of micronutrients and silicon by the upland rice cultivars. The experiment was arranged in a randomized complete block-split plot design. Plots consisted of three cultivars (Caiapó -traditional, BRS Primavera -intermediate, and Maravilha -modern) of upland rice. Split-plots consisted of plant samplings, which occurred at 39, 46, 55, 67, 75, 83, 92, 102, 111, 118, and 125 days after emergence (DAE). Up to the end of tillering (46 DAE), all cultivars exhibited low demand for most micronutrients and Si, and took up less than 24 % of the total B, Cu, and Si, but around 31 % of the total Zn. The period of greatest uptake of micronutrients and Si occurred from 65 to 80 DAE in the Caiapó and BRS Primavera cultivars, and after 80 DAE in the Maravilha cultivar. The Caiapó and BRS Primavera cultivars took up their necessary demand of B, Mn, and Fe in the first 98 DAE and Cu, Zn, and Si up to 105 DAE, but the Maravilha cultivar took up these nutrients for two to three weeks longer. The quantities of micronutrients and Si taken up by cultivars Caiapó, BRS Primavera, and Maravilha did not exhibit large differences, and these cultivars took up between 98-135 g B, 103-110 g Cu, 1,157-1,460 g Fe, 1,278-1,424 g Mn, 240-285 g Zn, and 111-124 kg Si per hectare. The BRS Primavera cultivar showed greater removal of nutrients, with average amounts per hectare of 19.7 g B, 25.8 g Cu, 200 g Fe, 234.2 g Mn, 102.4 g Zn, and 32.6 kg Si, while the other cultivars removed smaller amounts per hectare (14.4 g B, 19.9 g Cu, 160.7 g Fe, 136.3 g Mn, 67 g Zn, and 21.9 kg Si). The BRS Primavera showed a greater removal of nutrients because it has a higher yield and allocates a greater quantity of nutrients to the panicles.

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“…Values increased and corresponded to 21.23 and 22.21 mg kg -1 when the dose was halved and when the dose was absent, respectively. The use of high P doses could impair the assimilation of the Zn micronutrient (MUNER et al, 2011) wherein the deficiency is relatively common mainly due to the low amount in the cerrado soils (VENDRAME et al, 2007). Table 5.…”

Section: Resultsmentioning

confidence: 99%

Gypsum and Phosphorus in Improving Biometric and Nutritional Attributes of Soybean/Second Season Corn Succession

et al. 2018

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-The objective with this work was to evaluate the effect of the agricultural gypsum, associated with phosphate fertilization, on the nutrition, development and yield of soybean and corn in succession, under no-tillage system. The experiment was conducted at Universidade Federal de Goiás, Regional Jataí, in a randomized blocks design 5x3 factorial arrangement, with 4 replicates. The first factor consisted of the gypsum doses (0, 1, 2, 4 and 8 Mg ha-1) and the second the phosphorus doses (0, 50 and 100% of the recommended dose). Leaf nutrient contents, leaf area index, SPAD index, dry plant mass, final plant population, one thousand grain mass and grain yield were evaluated in the crops. In the soybean, the number of pods was also obtained and in the corn the average ear length, number of rows per ear, number of grain per ear and number of ears. Phosphorus doses increase leaf Mg contents in soybean and corn. The application of gypsum reduces the Mg and K leaf contents and increases the Ca, S, and Mn contents in the two cultures. Gypsum provides increases in the SPAD index in soybean plants. The unbalance of the N / K ratio in corn leaves, provided by the increase of the gypsum doses, reduces the leaf area of this crop. Doses of P and gypsum do not influence the yield of soybeans and maize.

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Disponibilidade de cobre, ferro, manganês e zinco em solos sob pastagens na Região do Cerrado

Cited by 29 publications

References 15 publications

Atributos químicos e estabilidade de agregados sob diferentes culturas de cobertura em Latossolo do cerrado

Atributos químicos e estabilidade de agregados sob diferentes culturas de cobertura em Latossolo do cerrado

Micronutrient and Silicon Uptake and Removal by Upland Rice Cultivars with Different Plant Architecture

Gypsum and Phosphorus in Improving Biometric and Nutritional Attributes of Soybean/Second Season Corn Succession

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