Authors : Deivasigamani S; E.Vetrivendhan; R.Vimalraj; S. Kavitha

Volume/Issue : Volume 10 - 2025, Issue 3 - March

Google Scholar : https://tinyurl.com/mrxpktfy

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DOI : https://doi.org/10.38124/ijisrt/25mar1256

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Abstract : A field experiment was conducted in red soil at KRISAT campus, Madurai, Tamilnadu, India. To study the number and size of bulbs in onion incorporated with biofertilizer and organic manures under gardenland conditions. The experimental design used for a split plot with three replications, 4 main and 4 sub plots were tried. The main plot treatments consist of M1-Poultry manure @ (1kg/plot), M2- FYM @ (2.5 kg/plot), M3- Vermicompost @ (1kg/plot), M4- Goat manure @ (1.5 kg/plot). The sub plot treatment consists of S0 (Control)-Organic manure (100%), S1-Organic manure (100%)+Azospirillum (25%), S2 -Organic manure +Azospirillum (50%), S3 -Organic manure +Azospirillum (75%). The growth and yield parameters were recorded at 30,60,90 DAP and during harvest. The highest leaf length (46.25 cm), leaf diameter(1.13 cm), maximum number of leaves (45), Bulb length(5.6 cm), maximum number of bulbs(5), average diameter of bulb(4.74 cm) and bulb yield(134.73q/ha)recorded in FYM with 75% azospirillum treated plot when compared to other organic manures. The organic manures paves to maintain soil fertility and enhanced the soil microbial populations.

Keywords : Allium Cepa, FYM, Vermicompost, Poultry Manure, Goat Manure, Biofertilizers.

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