EFFECT OF MEDIA AND HORMONES ON ROOTING OF AFRICAN MARIGOLD STEM CUTTINGS IN MIST CHAMBER
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Authors
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D. APARNA*, M. L. N. REDDY, A. V. D. DORAJEE RAO, V. V. BHASKAR, P. SUBBARAMAMMA and K. UMA KRISHNA
College of Horticulture, Dr. Y.S.R. Horticultural University, Venkataramannagudem - 534 101
Keywords:
Harmones, Marigold, Media, Mist chamber, Rooting, Terminal stem cuttingsAbstract
Experiments conducted from 2017 to 2019 (to find out suitable media and hormones for better
rooting and establishment of marigold terminal cuttings for summer cultivation) revealed that cocopeat
among media and IBA @ 3000 ppm as powder among hormonal treatments are the best which recorded
highest percentage of rooted cuttings (75.00%, 95.10% ), highest number of roots per cutting (122.68,
174.90 ), maximum survival percentage of rooted cuttings (77.96%, 96.62% ), root length (4.64 cm,
5.62 cm ) and percentage establishment of rooted cuttings in main field (76.03%, 95.58%), respectively.
Among the interaction effects, cocopeat and IBA @ 3000 ppm as powder recorded the maximum
values for percentage of rooted cuttings (98.00%), number of roots per cutting (174.90), primary
roots per cutting (11.58), secondary roots per cutting (114.6), longest root (5.62 cm), fresh weight of
roots (1.68 g), dry weight of roots (0.60 g), root to shoot ratio (1.25), survival percentage of rooted
cuttings (96.62%) and percentage establishment of rooted cuttings in main field (95.58 %). Whereas,
cocopeat, NAA 200 ppm and their combination recorded the maximum shoot length (16.07 cm, 22.86
cm and 23.49 cm ) and highest number of leaves per rooted cutting (153.73, 184.80 and 197.55),
respectively. The lowest values for all the parameters were recorded in sand medium alone without
any hormonal treatments.
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