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The European red mite, Panonychus ulmi (Koch), has assumed the status of major pest in recent years in Himachal Pradesh, India. It is essential that a fresh approach to mite control be undertaken especially by studying its population fluctuation in relation to host plant nutrition. The effect of three levels of N, P, and K, each at the recommended dose (N1, P1, K1), 25% above (N2, P2, K2) and 25%...