Journal of FARM SCIENCES, Vol 13, No 4 (2000)

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Impact of Intercrops and Trichrogramma chilonis Ishii Release on the Incidence of Early Shoot Borer in Sugarcane

V. Rachappa, L. Krishna Naik

Abstract


The impact of various intercrops, (Coriander, soybean, frenchbean and bhendi) and Trichogramma chilonis on the early shoot borer, Chilo infuscatellus (Snellen) was studied. The results revealed that marked control of early shoot borer was achieved by planting 2:1 rows of coriander and sugarcane. Significantly higher activity of T. chilonis was also found in above combination. On the contrary, sugarcane intercropped with bhendi recorded significantly higher infestation of early shoot borer and lower activity of Trichogramma than any of the other treatments. The highest cane yield (92.18t/ha), cane equivalent yield (100.54t/ha) and maximum net return (Rs.63,498) were obtained from sugarcane + coriander combination followed by sole crop.

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