La elección de las distancias entre filas y en la fila tiene dos parámetros importantes que garantizan una adecuada densidad de plantaciones, incrementan el rendimiento de girasol y reducen los costos de siembra. Existe el potencial para el aumento significativo de las superficies y producción de girasol en las superficies no irrigadas en Irán, en el caso de aplicar las óptimas medidas agrotécnicas. ![]() En el año 1997 se cultivaba en más de 20 millones de hectáreas en el mundo, de los cuales 60.000 ha han sido en Irán. The rainfall during the trial year was 854.6 mm at Gachsaran and 613 mm at Sararood.Įl girasol (Helianthus annuus L.) es un cultivo oleaginoso importante. Average yield was higher at Gachsaran than at Sararood, this can be due to varietal differences. Higher plant populations produced higher yield compared with lower populations in both locations. Sowing was performed on moist soil after effective rains in early spring. This study conducted in 1998 investigated the effect of plant density (38,000 to 100,000 pl/ha) in combination with row (50 and 75 cm) and plant spacing (20, 25, 30, 35 cm) on agronomic traits of two open pollinated sunflower cultivars, Progress and Record, grown under rain-fed conditions at two dry land research stations, one located at Gachsaran (a warm region) and another in Sararood (a semi-cold area of Iran). Two important management considerations are selecting row and plant spacings able to provide adequate plant density that will maximize seed yields and minimize seeding costs. There is a potential for substantial increase in sunflower acreage and production on dry land in Iran by applying optimum management practices. It was grown on more than 20 million hectares in the world in 1997, of which 60,000 ha were in Iran. ![]() Sunflower ( Helianthus annuus L.) is an important oilseed crop.
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