Short-term nickel residual effect in field-grown soybeans: nickel-enriched soil acidity amendments promote plant growth and safe soil nickel levels
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Data
2021-04-24
Autores
Rodak, Bruna Wurr
Freitas, Douglas Siqueira
Bernardes, Leonardo Franco
Lima, G. J. E. O.
Reis, A. R. [UNESP]
Lavres Junior, Jose
Guimaraes Guilherme, Luiz Roberto
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Editor
Taylor & Francis Ltd
Resumo
Nickel-enriched soil acidity amendments (SAA) may be advantageous for neutralizing acidity and providing safe/uniform distribution of Ni in soils. We evaluated the short-term effects of Ni application on field-grown soybean yield, growth, and soil chemical attributes using three sources of SAA, two enriched with Ni (Ni-rich mining by-product and Ni-salt) and a commercial SAA. The tested Ni-enriched sources were effective in providing Ni to the soil at safe levels, neutralizing acidity and increasing base saturation. A one-time Ni application resulted in optimal Ni levels in the first cropping season, enhancing grain yield by up to 658 kg ha(-1) and improving nitrogen metabolism in soybean. A low residual effect of Ni was observed in the second year, with soil available Ni and plant Ni concentrations decreasing to sub-optimal levels and yield gains not being observed. In conclusion, the application of Ni-enriched SAA is a sustainable technology for agriculture, optimizing soil management practices. The SAA derived from by-products has benefits to the mining sector, meeting the 'Ensure Sustainable Consumption and Production Patterns' (SDG 12). Our findings suggest that this micronutrient may require a year-to-year adjustment via Ni-fertilization and the total Ni concentration in the soil should be monitored over the cropping seasons.
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By-product, liming, Ni-fertilizer, SDG 12, tropical soil
Como citar
Archives Of Agronomy And Soil Science. Abingdon: Taylor & Francis Ltd, 16 p., 2021.