Portal de Periódicos da CAPES

Artigo Acesso aberto Produção Nacional Revisado por pares

BIBTEX RIS

Rates of nitrogen and growth retardant trinexapac-ethyl on wheat

2011; UNIVERSIDADE FEDERAL DE SANTA MARIA; Volume: 41; Issue: 12 Linguagem: Inglês

10.1590/s0103-84782011001200002

1678-4596

Marcelo Curitiba Espíndula, Valterley Soares Rocha, Leandro Torres de Souza, Moacil Alves de Souza, Marcela Campanharo, José Antônio Saraiva Grossi,

Soil Management and Crop Yield

The objective in this study was to evaluate the effects of nitrogen rates in association with rates of the growth retardant trinexapac-ethyl on wheat. The experiment was conducted in Viçosa, MG and arranged in a 5×4 factorial, randomized block design, with four repetitions. A combination of five nitrogen rates (30, 60, 90, 120 and 150kg ha-1) with four rates of trinexapac-ethyl (0, 62.5, 125 and 187.5g ha-1) were tested. Trinexapac-ethyl promotes reduction of soot dry mass and grain yield at the lowest N rates, but at the highest N rates there is increase in these characteristics. The combination between N and trinexapac-ethyl rates that promotes higher shoot dry mass is 150kg ha-1 and 187g ha-1 but that promotes higher grain yield is 100kg ha-1 and 120g ha-1, respectively.