| To produce tomato, in soilless greenhouse. The system consisted of plastic bags filled of substrate with a drip irrigation by mean of the nutritive solutions were applied at autumn-winter cycle.;Two experiments with Gabriela hybrid tomato were carried out. In the first experiment (2002-03), with four treatments and eight replications each one, the same nutritive solution was applied into vegetative stage, and later, in reproductive stage, different solutions according to treatments, where potassium concentration was modified were applied.;Results showed similarity in total yield, nevertheless a treatment was distinguished by homogeneity in the weight and size of tomatoes. In the second one experiment (2004-05), with 2 treatments and 16 replications each one, the scheme of potassium concentration handling in solutions being observed significant differences in the yield and quality.;Keywords: potassium, nutritive solution, tomato quality, soilless culture, greenhouse, Guanajuato... |
