Growth Characters and Yield of Taro [Colocasia esculenta (L.) Schott] as Influenced by Organic Nutrient Management

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  • N. P. LIMISHA College of Agriculture, Kerala Agricultural University, Vellayani Thiruvananthapuram - 695 522, Kerala, India
  • G. RAJASREE College of Agriculture, Kerala Agricultural University, Vellayani Thiruvananthapuram - 695 522, Kerala, India
  • SHEEBA REBECCA ISAAC College of Agriculture, Kerala Agricultural University, Vellayani Thiruvananthapuram - 695 522, Kerala, India


Colocasia, Green manuring, Growth attributes, Organic nutrition, Vermiwash


An experiment was undertaken at the College of Agriculture, Vellayani, Kerala to study the effect of organic nutrition on growth attributes and yield of taro during 2019-20 to 2020-21. The treatments comprised six levels of organic sources (S1 - FYM + wood ash;  S2 - FYM +  wood ash + PGPR mix I; S3 -  FYM + wood ash + PGPR mix I + vermiwash; S4 - Poultry manure + wood ash;  S5 - Poultry manure + wood ash + PGPR mix I;  S6 - Poultry manure + wood ash + PGPR mix I + vermiwash) and two levels of in-situ green manuring (G1 - in-situ green manuring with cowpea;  G2 - in-situ green manuring with dhaincha ) with three controls (C1 - Nutrient management through chemical fertilizers as per KAU PoP (80:25:100 kg NPK ha-1); C2 - Nutrient management as per KAU organic  PoP (Adhoc); C3 - Absolute control). During both years, the highest plant height was recorded with application of poultry manure along with wood ash, PGPR-mix I and vermiwash (S6) at all stages of crop growth. Cormel yield was also the highest for the organic source S6 during both years. In-situ green manuring with dhaincha (G2) was found superior to cowpea in producing taller plants, more leaves per plant and cormel yield during both years. The treatment S6G2 was found equally effective as chemical nutrient management and superior to existing Adhoc organic management of KAU and absolute control in case of both growth parameters and yield. Based on the results of the study it can be concluded that organic nutrition involving the application of poultry manure, wood ash along with PGPR mix I, vermiwash and in situ green manuring with dhiancha can be adopted for organic cultivation of taro. 


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How to Cite

LIMISHA, N. P., RAJASREE, G., & ISAAC, S. R. (2023). Growth Characters and Yield of Taro [Colocasia esculenta (L.) Schott] as Influenced by Organic Nutrient Management. Journal of the Indian Society of Coastal Agricultural Research, 40(2), 79-89.