عنوان مقاله [English]
In order to study the effect of tuber inoculation with Azotobacter, super nitro-plus and super nitro biofertilizers on tuber yield of three potato cultivars (Agria, Satina and Kozima) in cold-semi-arid conditions, a factorial experiment was conducted based on a randomized complete block design in Tabriz, Iran. Results revealed that the tuber bio-fertilization with Azotobacter, super nitro-plus and super nitro caused a decrease of 34%, 28% and 26% in the tubers with diameter of smaller than 40 mm, respectively. bio-fertilization with Azotobacter increased the tubers percentage with diameter of greater than 60 mm in the three studied potato cultivars. Treatments with higher tuber number per plant showed lower tuber weight after the control. Biologic yield of potato was 22.5 t.ha-1 in the control and increased up to 18%, 14% and 12% in tuber bio-fertilization with Azotobacter, super nitro-plus and super nitro, respectively. Based on the results, 79%, 75% and 78% of tuber yield in biofertilized seeds with Azotobacter were suitable for seed or edible tuber production in Agria, Satina and Kozima cultivars, respectively. These values were 63%, 73% and 76% in biofertilized seeds with super nitro-plus, 74%, 66% and 73% in biofertilized seeds with super nitro, and 49%, 41% and 45% in the control, respectively. In conclusion, it is recommended that potato farmers biofertilize potato tubers before planting in cold-semi-arid regions.
Abd-El-Vahab K, Riaz PP (2006) Sustainable nutrition management of potato under water stress conditions. Egiptian Journal of Agronomy 13(3): 21-26.
Anonymous 2008. Biofertilizers. Asia Biotechnology Institute, p. 4.
Asadi Rahmani H, Fallah A (2001) Necessary of production and extension of plant growth promoting biofertilizers. Journal of Plant Biology 12 (7): 15-22.
Bajaj S (1999) Nutritional improvement of potato. In: Bajaj, Y.P.S. (Ed), Biotechnology in agriculture and forestry. Springer Verlag 3: 136-150.
Farahvash F, Mobasher M (2007) New technology for vegetables production. Islamic Azad University of Tabriz Publication. 631 pp.
Hossein Zadeh A, Hassan Panah D, Dehdar B, Nikshad K, Hassani M, Imani A (2003) Designing and performing of potato seed production in Ardabil. Jehad-e-Keshavarzi Organization of Ardabil Publication. 125 pp.
Hossein AK, Fawzy H, Radwan S (2009) Influence of combined application of organic and inorganic fertilization rates with biofertilizer on potato under integrated weed managements. National Research Center, Cairo, Egypt.
Martin PA, Glatzle WK, Omay H, Schmidt W (1999) N2-fixing bacteria in the rhizosphere: quantification and hormonal effects on root development. Z. Pflanzenernaehr, Bodenk Publication. 237 pp.
Milic V, Vartha KL, Mirkovaki N (2001) Use of Azotobacter chroococcum as potentially useful in agricultural application. Annals of Microbiology 51: 145-158.
Mohammadzadeh AR (2007) Effects of green and organic manures on soil characteristics and potato yield. 10th Iranian Congress on Soil Sciences, September 2007, Karaj, Iran.
Rice J, Krishna KR, Singh H (2007) Improved tuber yield of potato (Solanum tuberosum L.) cultivars due to seed inoculation with different strains of Azospirillum. Indian Journal of Horticulture 65(4): 13-21.
Salaredini AA, Mojtehedi M (1993) Principles of Plant Nutrition. Tehran University Publ., 212 pp.
Subba, R. 2007. Biofertilizers in agriculture. Vartha Publication. New Dehli, 259 pp.