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- Title
USO DE NITROGÊNIO NO SISTEMA DE PRODUÇÃO DE SOJA SOBRE PALHADA DE CANA-DE-AÇÚCAR.
- Authors
BORGES, Wander Luis Barbosa; MATEUS, Gustavo Pavan; FREITAS, Rogério Soares de; TOKUDA, Flávio Sueo; HIPÓLITO, Jorge Luiz; TOMAZINI, Nicola Roberto; CAZENTINI FILHO, Gerson; GASPARINO, Adriano Custódio
- Abstract
Considering that from 2014 will no longer be allowed fires in São Paulo sugarcane, soybean growers who lease these areas should adapt to the no-tillage system in order to enjoy the agronomic benefits that the straw sugarcane provides. The study was conducted in Araçatuba, SP, during crop year 2011/12, and Araçatuba, SP, Brazil and Américo de Campos, SP, Brazil in 2012/13 and aimed to evaluate the influence of nitrogen on the yield of different cultivars soybean grown no-till on straw sugarcane, and the influence on the degradation of straw. We used a randomized block design in split-bands split plot with three replications. In the crop year 2011/12 we used a 5 x 2 factorial design, with five soybean cultivars: P 98Y11 RR, RR CD 219, M-Soy 7908 RR, BRS Valiosa and RR SYN 9078 RR, and two nitrogen levels: 0 and 45 kg ha-1 in the form of urea. In the crop year 2012/13, the study was conducted on the cultivar M-Soy 7908 RR in Araçatuba, SP, Brazil and on the cultivar SYN 9078 RR in Américo de Campos, SP, Brazil using four treatments (nitrogen): 0, 30, 45 and 60 kg ha-1, in the form of ammonium nitrate (30 and 60 kg ha-1) and urea (45 kg ha-1). It was found that the use of urea and ammonium nitrate did not influence the straw decomposition of cane sugar and did not promote significant increases in grain yield soybean of the cultivars evaluated.
- Publication
Nucleus (16786602), 2013, Vol 10, Issue 3, p57
- ISSN
1678-6602
- Publication type
Article
- DOI
10.3738/nucleus.v0i0.909