The field potato (Solanum tuberosum L.) experiment, carried out at the Musayyib project area, Babil Governorate, Iraq, followed a randomized complete block design with factorial arrangement and three replications. The presented study sought to determine the effects of four biofertilization levels (without adding + full recommended fertilizer, addition of 10 g mixture of four types of bacterial fertilizer + half of the recommended fertilizer, addition of 10 g of fungal biofertilizer (mycorrhiza) + half of the recommended fertilizer, and addition of 10 g mixture of bacterial and fungal biofertilizers + half of the recommended fertilizer) symbolized as B0, B1, B2, and B3, respectively. Meanwhile, the study determined nanofertilizer two levels’ effect (0 + full recommended fertilizer and 2 g L-1 + half of the recommended fertilizer) denoted by symbols N0 and N1, respectively, on the growth and tuber yield of three potato cultivars (Rashida, Sifra, and Arizona), carried out in the growing season of 2022–2023. The results revealed the cultivar Arizona was superior over the rest of the cultivars in the tuber’s percentage of nitrogen, phosphorus, potassium, protein, and starch. Treatment B3 of biofertilization and nanofertilizer (N1) also showed considerable superiority in the tuber’s percentage of nitrogen, phosphorus, potassium, protein, and starch. Moreover, the triple interaction between the study factors had a positive effect on most of the studied traits.
(S. tuberosum L.), cultivars, bacterial biofertilization, nanofertilization, macro elements
Potato (S. tuberosum L.) cultivar Arizona performed better and gave the highest tuber’s percentage of nitrogen, phosphorus, potassium, protein, and starch. Biofertilization (bacterial and fungal fertilizers) and nanofertilizers (2 g L-1) also revealed the noticeable advantage for biochemical traits in potato tubers.