The Effects of Nano-bio Fertilizer on Vegetative Growth and Nutrient uptake in Seedlings of three apple cultivars

摘要

For investigation the effect of nano-bio fertilizer on growth characteristics and nutrient uptake in three cultivars of apple, performed an experiment in a randomized complete block design with eight replications in Eqlid of Fars (Iran) providence in 2015. Treatments that applied at the end of May, were contained of four levels of nano-bio fertilizer (0, 1, 2 and 3 g/ pot) and three cultivars of apples ("Red Delicious", "Golden Delicious" and "Starking Delicious"). At the end of period, vegetative characteristics and concentration of elements were analyzed. The results showed that the application of nano-bio fertilizers in apple plants growing medium increased significantly plant height, stem diameter, leaf number and area and amount of chlorophyll a and b compared to the control .The concentration of copper, iron and phosphorus of leaves decreased, but their absorption increased in all three cultivars. Based on the results, using of 1 g/pot nano-bio fertilizer had a greater impact on the growth of apple plants. However, according to the results, the most characteristics did not show significant difference between 2 and 3 gram nano-bio fertilizer per pot.