Artículos de revistas
Uso do regulador de crescimento etil-trinexapac em arroz de terras altas
Fecha
2009-12-01Registro en:
Bragantia, v. 68, n. 4, p. 921-929, 2009.
0006-8705
1678-4499
10.1590/S0006-87052009000400012
S0006-87052009000400012
2-s2.0-77957665217
2-s2.0-77957665217.pdf
2359995407903863
7474964143537239
0000-0002-8222-3851
Autor
Universidade Estadual Paulista (Unesp)
Universidade Federal de Mato Grosso do Sul (UFMS)
Institución
Resumen
This work was developed with the objective of evaluating the use of trinexapac-ethyl doses (0, 75, 150, 225 and 300 g of the a.i. ha -1) and application times (active tillering, between active tillering and floral differentiation and at floral differentiation) in upland rice crop development and yield. The experiment was carried out in Selvíria-MS, during the agricultural year of 2006/07. Application of 150 g ha -1 of trinexapac-ethyl in Primavera rice cultivar at panicle initiation differentiation reduces plants height, 0.40 m on average comparing to other times, with lodging absence. Trinexapac-ethyl promotes lange number of abnormal grains, reduction of grain yields in doses above 150 g ha -1, when applied in panicle initiation differentiation stadium. Application of 150 g ha -1 of trinexapac-ethyl at any time does not interfere in crop yield.