Journal of Environmental Biology

Role of potash fertilization through organic and inorganic sources on growth and yield of turmeric

M. Chanchan*¹, S. Romen¹ and J.K. Hore²

¹Department of Horticulture, Central Agricultural University, Imphal-795 004, India

²Department of Spice and Plantation Crops, Faculty of Horticulture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur-741 252, India

*Corresponding Author Email : chanchan.meinam17@gmail.com                  *ORCiD: https://orcid.org/0009-0003-9468-5273

Received: 13.09.2022                                                                                           Revised: 15.12.2022                                                                            Accepted: 21.01.2023

Abstract

Aim: To investigate the possibility of substitution of inorganic inputs through organics and to evaluate the effects of bioorganic inputs on microbial population of soil.

Methodology: A field experiment of RBD with 13 treatments and 3 replication using combination of organic manures viz., compost/vermicompost, potassic mobilising inoculants along with graded (100, 75 and 50%) levels of inorganic potassium were tried for partial substitution of inorganic potassium with organic source in turmeric cv. Suguna.

Results: Considering the yield, the vermicompost + inorganic K (100%) + K mobiliser (32.35 t ha^-1) was the best treatment, followed by Compost + K 100% + KM (31.13 t ha^-1).

Interpretation: These results indicate that soils were less fertile due to deficit in soil nutrients. Recommended doses of organic bio-fertilizer and inorganic fertilizer should be practiced for reclamation of soil status. Application of potassic mobilizer as biofertilizer in turmeric can reduce the application of inorganic potassium and support eco-friendly crop production.  

Key words: Compost, Curcuma longa, Organic manures, Potassic mobilizer, Turmeric, Vermicompost

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