assessment of foliar application of iron and silicon on some agronomic, quanti-tative and qualitative parameters of potato (solanum tuberosum l.)

this study aimed at evaluating some quantitative and qualitative properties of potato as one of the main commercial products in iran. to this end, a split plot experiment on the basis of randomized complete bloke design with silicone and iron was carried out in jiroft as one of the commercial area of planting potatoes. the main factor included different levels of silicon (0, 10, 20, 30 mm.l-1) and sub plot included different levels of iron (0, 1, 2, 3 g.l-1). the results showed that the highest and the lowest dry and fresh weight of plant, stem diameter, number of tubers per plant, number of tubers above 100 g, and the yield of tuber per hectare were observed in treatments with the interactive effect of iron and silicon at a concentration of 2 g per liter and control treatment, respectively. tuber yield due to foliar application of 2 g.l-1 iron and 2 g.l-1 silicon was 15-35% more than control treatment. however, the interactive effect of the fertilizers on plant height, number of stems, number of tubers and tuber weight was not significant. in general, iron and silicon fertilizers with concentration of 2 g.l-1 is recommended for producing potato with higher quality and quantity.