Author(s):

K Noorjahan, M Raja Naik, M Ramaiah and K Gopal

Abstract: The present investigation on African marigold (Tagetes erecta L.) cv. Pusa Basanthi Gainda was conducted during Rabi season of 2016-2017 under agro-climatic condition of College of Horticulture, Anantharajupeta, Y.S.R Kadapa Dt. The experiment was conducted to study the influence of nutrients and Piriformospora indica on growth and biochemical traits of marigold. The experiment was laid-out in Randomized Block Design, replicated thrice and consisting of 9 treatments. The results revealed that, taller plant (58.29 cm), higher leaf count (105.20 plant^-1), early time to full flowering (59.55 days), longest root (19.21 cm), higher number of roots (127.33), root volume (39.33 m³) and maximum root colonization of Piriformospora indica in marigold roots (75.09 per cent) was recorded in treatment combination T₂. However, carotenoid (31.32 mg g^-1) and total phenol content (76.55 mg g^-1) recorded was highest in the treatment T₅. While the treatment combinations viz., T₄ and T₃ recorded significantly maximum flavonoids (4.67 mg g^-1) and carbohydrates (6.82 mg g^-1), respectively.

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