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Research Article Open access CC BY 4.0

Yield Dynamics and Economic Analysis of Castor-Based Relay Intercropping System in Rainfed Alfisols

Gangadhar K, Bhairappanavar, S. T., Jayadeva, H. M., Mohan Kumar, R., Prakash, K., Kadalli, G. G.

Journal of Advances in Biology & Biotechnology · pp. 68–79 · Published 23 Aug 2025

10.9734/jabb/2025/v28i92860

Abstract

The current field study was carried out at Zonal Agricultural Research Station, UAS, GKVK, Bangalore during Kharif and Rabi season of 2022-23 and 2023-24 to evaluate the feasibility of castor based relay intercropping system in rainfed alfisols of Karnataka. The experiment was laid out in split plot design with four main-plot treatments (cropping geometry with fingermillet intercropping), four sub-plot treatments (followed relay intercropping), with 16 interaction treatments and also considered sole cropping to assess the intercropping indices. The outcome of study disclosed that wider paired row planting of castor (60-240 cm x 45 cm) with fingermillet intercropping followed by fieldbean relay intercropping system has found significantly higher seed, stalk and oil yield of castor (1446, 2636 and 664 kg ha-1, respectively), along with superior castor equivalent yield (2881 kg ha-1), land use efficiency (167.20%), system productivity (13.72 kg ha-day-1), net returns (₹ 96596 ha-1) and relative economic efficiency (153.50%) compared to other relay intercropping systems. This system proved most effective and profitable.

Castor relay intercropping productivity use efficiency and economics

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