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| Moreira,Adônis; Moraes,Larissa Alexandra Cardoso; Nogueira,Thiago Assis Rodrigues; Canizella,Bruna Trovo. |
| Abstract: The objective of this work was to evaluate the effect of copper use efficiency in soybean cultivars, grown on a typical Ultisol with a high organic matter content, on soil chemical properties and on plant grain yield, nutritional state, and physiological components. The experiment was carried out in greenhouse conditions, in a 5×4 factorial arrangement, with five soybean cultivars (TMG 1066RR, BRS 360RR, NA 6262RR, BMX Turbo RR, and BRS 359RR) and four Cu rates (0, 2, 4, and 8 mg kg-1). Under the studied soil conditions, the DTPA-TEA and Mehlich-1 extractants were efficient in determining available Cu in the soil. Regardless of the cultivars, Cu application increased grain yield (GY), shoot dry weight yield (SDWY), number of pods per pot, GY/SDWY... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; DTPA-TEA; Mehlich 1; Nutritional state; Physiological components; Yield components. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102103 |
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| Teixeira,Sandra Tereza; Melo,Wanderley José de; Silva,Érica Tomé. |
| The application of water treatment sludge (WTS) to degraded soil is an alternative for both residue disposal and degraded soil reclaim. This study evaluated effects of the application of water treatment sludge to a Typic Hapludox soil degraded by tin mining in the National Forest of Jamari, State of Rondonia, Brazil, on the content of heavy metals. A completely randomized experimental design with five treatments was used: control (n = 4); chemical control, which received only liming (n = 4); and rates D100, D150 and D200, which corresponded to 100, 150 and 200 mg of N-sludge kg-1 soil (n = 20), respectively. Thirty days after liming, period in which soil moisture was kept at 70% of the retention capacity, soil samples were taken and analyzed for total and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil reclaim; Tin mining; Mehlich 1; Environmental pollution. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000500016 |
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| Oliveira,Katarzyna Wójcik; Melo,Wanderley José de; Pereira,Gener Tadeu; Melo,Valéria Peruca de; Melo,Gabriel Maurício Peruca de. |
| Biosolids comprise organic matter and plant nutrients, but are also a source of heavy metals hazardous to soils, plants and humans. The aim of this work was to evaluate accumulation, movement in the soil profile and availability to maize plants of heavy metals in two oxisols amended with biosolids for five years. The experiment was carried out in Jaboticabal, SP, Brazil, under field conditions, using a split-plot design. Biosolids were added to the soils at four different rates, 0.0 (control with mineral fertilization), 2.5; 5.0 and 10.0 t ha-1, dry weight basis, annualy for three years. In the fourth and fifth years, the 2.5 t ha-1 treatment rate was increased to 20.0 t ha-1. In the fifth year, soil samples were collected at 0-20 and 20-40 cm depths and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mehlich 1; Sewage sludge; Maize; Metal availability. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000400012 |
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