Resource efficient and cost reduction technology for Trichogramma chilonis Ishii (Hymenoptera: Trichogrammatidae) production

Abstract

In India, the egg parasitoid Trichogramma chilonis Ishii is generally mass produced on the eggs of rice moth, Corcyra cephalonica Stainton, however, in the present study, the cost of production of T. chilonis was studied on Samia cynthia ricini, eri silkworm, and was compared with rice moth. Rearing of T. chilonis on eri silkworm eggs showed higher benefit cost-ratio of 1.89 with a net profit of Rs. 4620, whereas T. chilonis when reared on the eggs of C. cephalonica recorded a benefit cost ratio of 1.28, with a net profit of Rs. 2379. The results revealed that in one hectare area, one trichocard made from eri silkworm eggs release that containing 3500 eggs. Each parasitized egg yields 9-10 adults, thus total adults account to about 35000-40000 adults ha -1 , while in case of trichocard made from rice moth eggs, the number of cards to be released in one hectare area are 2-3, since one trichocard made from rice moth eggs consit of 16000-17000 eggs. Hence, eri silkworm can be used as an alternate host to rice moth for rearing of T. chilonis as it is a resource efficient and cost reducing technology. Further, this production technology would be suitable for promoting localized production of eri silkworm at village level especially for tribal farmers, and unemployed youth.

Augmentative Biological Control of Spodoptera Frugiperda Using Trichogramma Species: A Review

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Assessing Biopesticides for Managing Fall Armyworm (Spodoptera frugiperda) in Africa

“…Assessments for other pests or in other countries indicated that a number of active ingredients were cost-effective, including capsaicin, Chromobacterium subtsugae, garlic extracts, Isaria fumosorosea, Metarhizium anisopliae, spinosad and Trichogramma spp. (Dougoud et al 2019, Kivett et al 2015, Manisha et al 2020, Nayak et al 2019).…”

Updated assessment of potential biopesticide options for managing fall armyworm (Spodoptera frugiperda) in Africa

“…For most of the biopesticide AI, there were no specific figures available on their cost and there was very little information on (Dougoud et al, 2019;Kivett et al, 2015;Manisha et al, 2020;Nayak et al, 2019).…”