The present two-year research (1397-1398) investigates the effect of Mycorrhizal inoculation. For this purpose, it takes the combined ratio of Auxin/Gibirlin and Ascorbic acid on the yield and yield components of corn, in the form of split factorial design in the form of randomized complete blocks in three replicates in Shahid Salemi farm. It has been done north of Ahvaz city. The main factor of the treatments include Mycorrhizal fungus (Glomus intraradices species) at two levels (inoculation and non-inoculation) before planting and the secondary factor includes the ratio of Auxin hormone to gibberellin at three levels (0, 300/600, and 600/300) mg/liter and ascorbic acid at three levels (0, 100, and 200) mg/liter are applied as foliar spraying. The results show that Mycorrhiza has a significant effect on the dry weight of leaves, stems, and cobs, seed weight and yield, as well as biological traits, respectively, the highest seed yield amounting to (7410.72) kg is related to the treatment levels of Mycorrhizal inoculation, the ratio of Auxin to gibberellin is 600 mg to 300 mg and in 200 mg of ascorbic acid and the highest yield of stem dry weight (100 grams) . In the triple interaction of the experimental factors in the treatment levels, there has not been any Mycorrhiza inoculation. For not using the hormonal compound and using 100 mg of ascorbic acid, the highest seed yield in the row (45.46%) has been obtained in the ratio of Auxin to gibberellin of 600 mg to 300 mg and using 200 mg of ascorbic acid. According to the positive effect of the use of experimental factors, the use of Mycorrhiza and the mentioned hormones, and ascorbic acid are recommended.
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