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Nascimento,Carlos Antonio Costa do; Vitti,Godofredo Cesar; Faria,Letícia de Abreu; Luz,Pedro Henrique Cerqueira; Mendes,Fernanda Latanze. |
Nitrogen fertilization is a major component of the cost of agricultural production, due to the high cost and low efficiency of fertilizers. In the case of urea, the low efficiency is mainly due to losses by volatilization, which are more pronounced in cultivation systems in which plant residues are left on the soil. The objective of this work was to compare the influence of urea coated with sulfur or boric acid and copper sulfate with conventional N fertilizers on N volatilization losses in sugar cane harvested after stubble burning. The sources urea, sulfur-coated urea, urea coated with boric acid and copper sulfate, as well as nitrate and ammonium sulfate, were tested at amounts containing N rates of 120 kg ha-1 N. The integration of new technologies in... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Elemental sulfur; Boric acid; Copper sulfate; Sugarcane; Harvest without burning. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000400022 |
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Ibañez,Thiago Bergamini; Santos,Luiz Felipe de Melo; Lapaz,Allan de Marcos; Ribeiro,Igor Virgilio; Ribeiro,Filipe Virgilio; Reis,André Rodrigues dos; Moreira,Adônis; Heinrichs,Reges. |
ABSTRACT This study evaluated the nutritional quality, yield, and storage protein modulation in soybean grains in response to levels and sources of sulfur (S) in a dystrophic Ultisol. We used five levels of S (0, 50, 100, 150 and 200 mg kg –1 ) and four sources of S (elemental S pastille - ESPA, gypsum - GY, gypsite - GI and elemental S powder - ESPO). Plants treated with 50 mg kg –1 of GY, GI, and ESPO and 200 mg kg –1 of ESPA had the largest grain yield values. Low S supply resulted in lower yields for all S sources tested. Sulfur deficiencies were observed at all levels for ESPA, resulting in lower concentrations of globulin and higher concentration of glutelin and albumin in the grains, possibly because the S content in the leaf was below the range... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Plant nutrition; Elemental sulfur; Sulfate. |
Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000101402 |
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