Effect of Biofertilizers and Spraying with Vitamins on Two Cultivars of Iris spp.

Abstract

The study was conducted in the plastic house belonging to Al-Mussaib Technical College, Al-Furat Al-Awsat Technical University during the growth seasone2020-2021, to study the effect of bio-fertilizers and spraying with vitamins on the growth and flowering of two cultivars of Iris sp. The experiment included studying the effect  of two cultivars(Sapphire Beauty and white magic) which are symbolized by (C1, C2), respectively , bio fertilizer spraying with distilled water (the control), Azotobacter spp, and Bacillus spp), which are symbolized by (S1, S2, S3),  and spraying of vitamins (control) 0 , ascorbic acid (vitamin C)   (200 mg.L^-1 and thymine (B1) (200 mg.L^-1), which symbolized by (F1, F2, F3), respectively. The study was conducted as a factorial experiment according to the Randomized Complete Blocks Design (R.C.B.D), with three replications, and the averages were compared according to the least significant difference (L.S.D) test under the probability level of 5%. The results showed that the blue cultivar was significantly excelled and gave the highest values for all the studied traits, The Azotobacter treatment has significantly excelled on the rest of the other treatments in  plant height 49 cm, chlorophyll content 52.94 spad, percentage of carbohydrate 10.69%, vase life 10.73 days, anthocyanin in petals 15.93 mg 100.g^-1 and carotenoids in petals 7.53.The spraying treatment with Ascorbic acid at a concentration of (200 mg.L^-1) has significantly excelled and gave the highest values for all the studied traits,The triple interaction treatment consisting of (blue cultivar + Azotobacter bacteria + spraying with ascorbic acid at a concentration of (200 mg.L^-1) has excelled in the traits of plant height 82.88 cm, chlorophyll content 58 44Spad, percentage of carbohydrate 11.86%, vase life 11.85 days, and anthocyanins in petals 29.69 mg 100.g^-1.