Moisés Escaff G.1, Salomón Zaviezo M2, Adriana Ramírez S.3

To compare the effectiveness of some herbicides and herbicides mixtures on corn yield, a trial was conducted at La Platina Experimental Station of the Agricultural Research Institute during the 1967-1968 season.
The best results as regards yield and weed control in comparison with the check hand hoe system were obtained by: Linuron, reemergence application of 2 kg AI/ha, Atrazine, early postmergence application of 1,5 kg AI/ha + 10 t oil. At the same growing stage, Atrazine + CP50144, 1 + 1,92 kg AI/ha; Metobromuron, preemergence application of 2kg AI/ha; Atrazine + Prometryne, 1,7 + 1,7 kg AI/ha; Metobramuron + Prometryne, 2 + 1 kg AI/ha; both mixtures applied during preemergence period. At the same growing stage, Linuron and Metobromuron, 3 kg AI/ha for both products, during early postemergence, Atrazine + Propachlor, 1 + 1,95 kg AI/ha and Atrazine, 2 kg AI/ha, with addition of 10 lt oil per hectare for both treatments.

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1lng. Agr. Línea Fruticultura, Estación Experimental La Platina. Instituto de Investigaciones Agropecuarias, Casilla 5427, Santiago, Chile.
2Ing. Agr. Profesor de la Cátedra .Control de Malezas, Facultad de Agronomía, Universidad de Chile. Dipl. In. Agr. Science, U. of Edimburgh. Fallecido el 21 de febrero de 1970.
3Ing. Agr. Proyecto Control de Malezas, Estación Experimental La Platina, Instituto de Investigaciones Agropecuarias.

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