Show sycamore blight Is most severe treesia trees in many states east of mississippi river hard hit this year prepared by the th united abata of agriculture sycamore trees this spring and early summer were especially hard lilt hit by a blight commonly known as sycamore blight in ninny many states enat east of the mississippi river notably ohio pennsylvania new jersey illinois ind virginia the disease affects not only 06 lie common or buttonwood but also the lie oriental plane tree due to wet spring although the blight occurs to n slight blight extent every year in the eastern and central united states tile the severity of tile the attack this year according to tile the united states estalea depart mont ment of agriculture appears to bo be larkely largely lite clue to the unusually wet spring when the loaves leaves wore were developing tito the blight injures tile the newly developed leaves and the young shoots the new leaves leaver just unfolding front from the bud sudden suddenly lly wither be become come discolored and finally blacken giving tho the appearance of injury by frost on oil the older leaves the disease appears as brown blotches blotcher blot ches or spots of irregular shape usually along the veins in severe cases the leaves full fall but a new crop usually Is produced later in tile the summer continued defoliation in successive ye ea drs rs andi and the severe dying back of the twigs eventually cause the death of tile tree methods of control As in tile alie case of most tree diseases e methods of controlling the blight tire are rather expensive find and usually I 1 somewhat difficult to carryout carr carry out the value of the tree however for shade or ornamental purpose may possibly warrant tile expense and trouble As a first step in controlling the disease the infected twigs should be carefully removed by pruning well back of the infected portion all of these twigs together with tiny fallen leaves and twigs should be carefully collected and burned they should not be thrown onto the rubbish heap since that Is often one of tile the most favorable places for the fungus to fruit its spores may then bo be carried to healthy trees which it may thus become infected after all the infected twigs ore are cut away the remainder of the tree should be 8 spayed with bor bordenuk bordeaux borde denux aus mixture in the proportions t 4 4 50 A second or third application catlon of a weaker solution of bordeaux mixture may be necessary before midsummer to protect the new foliage again in the autumn it Is advisable to 6 rake up and burn all fallen leaves and twigs since this tends to prevent the spread of ar any kv disease which may be present upon them |