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| Bragagnolo,Jardes; Amado,Telmo Jorge Carneiro; Nicoloso,Rodrigo da Silveira; Jasper,Joerg; Kunz,Junior; Teixeira,Tiago de Gregori. |
| Variable-rate nitrogen fertilization (VRF) based on optical spectrometry sensors of crops is a technological innovation capable of improving the nutrient use efficiency (NUE) and mitigate environmental impacts. However, studies addressing fertilization based on crop sensors are still scarce in Brazilian agriculture. This study aims to evaluate the efficiency of an optical crop sensor to assess the nutritional status of corn and compare VRF with the standard strategy of traditional single-rate N fertilization (TSF) used by farmers. With this purpose, three experiments were conducted at different locations in Southern Brazil, in the growing seasons 2008/09 and 2010/11. The following crop properties were evaluated: above-ground dry matter production, nitrogen... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Site-specific management; Optical spectrometry; Precision agriculture; Soil fertility. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000500018 |
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