Determination of the best time of seeding for wheat in irrigated soils of north-central Chile

René Cortázar S.1, Ignacio Ramírez A.1, Oscar Moreno M.1, Ernesto Hacke E.1 y Fernando Riveros B.1

In 1981, 1982 and 1983 yield trials were conduced to study the effect of five dates of sowing on wheat yield at La Platina Exp. Sta. (INIA-Santiago). The treatments were sowed between the end of May and the end of August. Yield and the hectoliter weight were determined and incidence of diseases was recorded. were: 45% at the end of May; 12.4% at the and 34.0% at the end of August. In the average, it was found that the first date (late May) was affected by bird damage. Best yields were obiained seeding in the middle of June, and the reduction of yield in the other dates of sowing middle of July; 19,1% at the beginning of August;

1 Estación Experimental La Platina (INIA), Casilla 5427, Santiago, Chile.