Vol. 12, Issue 12 (2023)

Author(s):
DK Debata and TK Khandaitray

Abstract:
The present investigation was carried during the kharif 2020-22 at – Regional Research and Technology Transfer Station, G. Udayagiri, Kandhamal (Odisha). The experiment was laid out for organic cultivation of Colocassia (Colocassia esculenta L.) at North Eastern Ghat Zone in a factorial randomized block design with ten treatment combinations consisted of RDF of fertilizer (N80P60K80)). The treatments taken viz. T₁- 1/3rd RDN each through FYM (5.3 tha^-1) + Turmeric manures (5.3 tha^-1) + Neem cake (o.5 tha^-1). T₂- 1/3rd RDN each through FYM (5.3 tha^-1) = Turmeric manure (5.3 tha^-1) +vermi compost (1.67 tha^-1). T₃-1/3^rd RDN each through FYM (5.3 tha^-1) + turmeric manure (5.3 tha-1) + sheep and goat manure (0.89 tha^-1). T₄-1/3^rd RDN each through FYM (5.3 tha^-1) + Turmeric manures (5.3 tha^-1) + well decomposed poultry manure (1.78t ha^-1). T₅-1/3^rd RDN each through FYM (5.3t ha-¹) + Turmeric manures (5.3 tha^-1) + stera mel (1t ha^-1). T₆-100% RDN through FYM (16 tha^-1). T₇-100% RDN through turmeric (16t ha-1). T₈-RDF (80:60:80kg ha^-1). T₉-Control (Nil). T₁₀- Bio- Fertiliser (bio -fertiliser soil application with 3 kg each of Azospirillum, Azotobacter and PSB inoculated with 25 times of FYM for 7 days). The result revealed that revealed that maximum number of tubers per plant (12.80) was recorded in the T₁₀ as against in the control T₉ (9.40). The quality parameters like length of tubers(4.45cm), diameter (3.08 cm), weight of tubers (187.00 gm), yield of tuber per plot (18.70 kg) and yield of tuber /ha (13.85t ha^-1) were also found maximum with application of combination of bio-fertilizer (Azospirillum, Azotobacter and PSB 1:1:1 ratio). It also gives maximum cost: benefit ratio of 1:2.35.