Aspetti di tecnica colturale del cartamo (Carthamus tinctoriusL.)

During 1981, 1982 and 1983 trials have bean carried out on different varietas of safflower. The trials con· cerned the sowing rates, row spacing and N fertilization. The varietas Safflola 202, Safflola 541 and Safflola 918 have given the highest yield achieving 20 q ha-1. Achenes yield hasn't been statistically different using 20-30 and 40 Kg ha-1of seed. Yield rates nearly equal have been obtained with plants in narrow rows (25 cm) and in wide rows (50 cm). N fertilization has positively affected the achenes-yield. 40 Kg ha-1of N have determined an increased production wich has been statistically significant in comparison with the non fertilized test. It hasn't been achieved any further increment in the yield using higher N rates (80 and 120 Kg ha-1).