Akademik Veri Yönetim Sistemi
TURKISH JOURNAL OF FIELD CROPS, cilt.29, sa.1, ss.9-17, 2024 (SCI-Expanded)
The objective of this study was to determine the effects of plant density per unit area on micro nutrients (Iron,
Copper, Zinc, Manganese and Boron) uptake of some sunflower genotypes. Three sunflower varieties (Sanay
MR, Oliva CL and LG5543 CL) were used as genetic material and three different plant densities: 40800, 57100
and 95200 plants/ha (sowing spacing; 0.35 x 0.70, 0.25 x 0.70 and 0.15 x 0.70 m, respectively). Field experiments
were conducted in a split plot design with three replications. According to the results, the micronutrient
concentrations as well as the seed and oil yields and partly also oil content increased significantly as the plant
density increased. For all analyzed micronutrients (Fe, Cu, Zn, Mn and B), the highest concentration has been
obtained with 95200 plant ha-1. Micronutrient elements as well as seed and oil yields differed according to plant
density and cultivars. Among the varieties, LG 5543 CL more effected by plant density had the highest
micronutrient concentration, seed yield and oil yield. As a result, a high plant density (95,200 plant ha) with the
highest micronutrient content and also the highest seed and oil yield could be recommended for Mediterranean
environments with a semi-humid climate. However, optimum plant density was found differently according to
varieties and years.