Life fecundity tables were studied for Spodoptera litura (Fabricius) when reared on castor (Ricinus communis L). groundnut (Arachis hypogea), okra (Abelmoschus esculentus L.) and sunflower (Helianthus annuus L.) under laboratory conditions at 26·8± rc temperature. The net reproductive rate (R a ), was calculated in each case.
The tobacco caterpillar, Spodoptera litura (Fabricius) was reared on different host plants under laboratory conditions. This article reports the growth and development of S. litura on different host plants.
The parasitisation of Heliochis armigera (Hubner) larvae by Campoletis chlorideae Uchida and Eriicospilus biconatus Townes, Townes & Gupta (= neorufus Rao & Nikam) was 8·70 and 13·79% respectively during the first generation on pigeonpea during 1983--84 at Parbhani. The parasitisation of H. armigera by these parasites was low in second overlapping generation. Thus, C. chlorideae and E. biconatus were identified as key mortality factors for H. armiqera on pigeonpea.
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