| Comparative trials with experimental corn hybrids are being conducted, in the State of São Paulo, Brazil, by the Instituto Agronômico, at its Experiment Stations, at Campinas, Ribeirão Prêto and Pindorama. During the years from 1938 to 1950 a total of 119 trials were planted, only twelve of them having been eliminated due to severe insect attacks. Except 21 trials in randomized blocks and 2 in incomplete block designs, all the others were planted in simple lattice, with 4 replications. The individual plots, with few exceptions, had one or usually two 5 m rows each. Among the yellow flint Unes tested, L. 483 is, no doubt, the best. It has high combining ability and also excellent agronomic characters. The performance of some other lines, as L.278-1-1,... |
