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Economic injury level of mustard aphid Lipaphis erysimi (Kalt.) in toria crop (Brassica campestris var. toria)



Economic injury level of mustard aphid Lipaphis erysimi (Kalt.) in toria crop (Brassica campestris var. toria)



New Agriculturist 3(2): 193-198



On the basis of field studies in Assam, India, in 1985-88, the economic injury level for Lipaphis erysimi on toria var. M-27 was found to be 30-40 aphids/10 cm of terminal shoot during the 1st and 2nd weeks of January, when 17.00-28.67% of the twigs were infested.

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Accession: 002351884

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