Author(s): D. ELUMALAI, INDIRA KUMAR K. AND P. MOHAN RAJ

Abstract: The study was conducted at Adhiyamaan College of Agriculture and Research, Athimugam, Krishnagiri District, Tamil Nadu to understand the effect of some castor cultivars on eri silkworm’s growth and other economic parameters. The Eri silkworm were reared in indoor condition on different Varieties/Hybrids of castor viz., YRCH 1, YRCH 2, GAUCH Red, GAUCH Black, YTP 1 and Local variety. Shortest life cycle was observed in Eri Silkworms fed with GAUCH Red (45.89 days) and followed by GAUCH Black (46.03 days). The highest Cocoon weight (3.10g / cocoon), pupal weight (2.68g /pupa) were recorded GAUCH Red and GAUCH Black and also shell ratio (14.08%) was contained highest in batches of silkworm fed by genotype of YTP 1. Apart from that, fecundity (349.33 no./ moth) and hatchability (94.55%) was highest in GAUCH Black. Rate of pupation and Effective Rate Rearing (ERR) were not influenced by the castor genotypes. Therefore, it can be concluded that GAUCH Red and GAUCH Black were superior which are highly suitable for Eri culture followed by YRCH 1 and YRCH 2 which are moderately suitable for rearing.

DOI: 10.22271/09746315.2023.v19.i2.1711

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