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agricultural alfalfa American elm Amur Amur maple animals apple applied areas attractive hedge Average boom branches broilers bushel CANADA DEPARTMENT Caragana Cedar chemical Cherry chilled carcass Chokecherry color Common lilac Cotoneaster Crabapple crop damage deciduous dense disease dwarf early Euonymus Evergreen hedges feet high feet wide fertilizer fescue Figure flowers foliage forage fruit Golden willow grass green grow growth grubs hard pruning Hawthorn hedge at Morden hedge plant height herbicides Honeysuckle inches insecticide insects irrigation lawn leaves legumes Lonicera manure mixture Morden nitrogen nozzle orchard Ottawa pasture percent Pine Pinus planted in 1931 pounds prairie pressure Prinsepia production Prunus pump red fescue Research Station ROGER DUHAMEL rootstocks row-crop scurfy scale season seed seedlings shrub Siberian Siberian elm soil species spiny Spirea spray spring spruce suckers tank Thuja occidentalis trees trimmed usually varieties Wabowden weeds willow winter injury yields