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acaricides acre adult applied areas Assam Assam teas attack bacterial baits bamboo blue beetle borer caterpillars caused chemical clean cockchafer colour Copyright Reserved crop damage Darjeeling defoliated diameter Dieldrin dry leaf dryer dust eelworm effective eggs Endosulfan Eurema blanda F F F female fermentation firing floor fresh leaf garden grade green leaf hectare infestation infills infused leaf insecticides larva leaves Lime sulphur liquor characters litres manufacture manure method mite moisture content mounds nests nursery nymphs odoratissima orthodox period pest plucking population pressure pruned tea psyllids pupa recommended red spider replanting result rollers rolling roots rope samples scale insects season seed seedlings Serial replaces Serial shade trees Sheets shoots soil species sprayers spraying spread stages stems surface taste tea bushes tea liquor temperature termites thick Tocklai tractor uprooting usually winch withered leaf young tea