PEACH YELLOWS AND PEACH ROSETTE. 179 



wasting much good fruit. The limbs were severed next to the body of the tree and the 

 stumps were painted. 



(1) August 9, 1888. Variety, not recorded. The tree was full of peaches, nearly all 

 of which were green and healthy. Two small branches had been cut away recently 

 because they bore premature fruit. The large limb which had borne these branches 

 still bore a few ripe, red-spotted peaches, but most of its fruit was healthy. This limb 

 was cut away next to the trunk, the stump being six inches in diameter and sound. 

 Part of the other main limb, with much sound fruit, was also cut away because a few 

 twigs on one branch bore premature fruit. One comparatively small limb was left. 

 This bore green peaches and appeared to be perfectly healthy. There were yet no 

 diseased shoots on any part of the tree. 



Result. — September 20, 1889. Tree gone. Supposed to have been removed acci- 

 dentally in the spring or summer on account of disease, the order being to remove all 

 diseased trees. 



(2) August 9, 1888. Variety, Mountain Rose. A small branch which bore premature 

 peaches had been removed recently, and another small branch on the same limb bore 

 the ripe and red-spotted fruit. There were no other indications of disease. Even on 

 this limb nine tenths of the fruit and all of the foliage appeared to be perfectly normal. 

 The limb was cut away close to the trunk. The sound stump was seven inches in diameter 

 The limb which remained bore thrifty foliage and was full of green, healthy peaches. 

 A very careful examination of all parts showed no trace of disease. 



Result. — September 20, 1889. There is no fruit. One branch bears three diseased 

 shoots, but the spring foliage of the tree is still normal in size and color. 



(3) August 9, 1888. Variety, Reeves's Favorite. Parts of one limb showed symptoms 

 of disease; a small branch had been cut away recently on account of yellows and two 

 other small branches bore large, red-spotted, ripe fruits, which were in very marked 

 contrast to the unripe peaches upon the remainder of this limb and upon other parts of 

 the tree. Eighteen inches above the cut a feeble shoot, one fourth inch long, was 

 pushing through the rough bark. Eighteen inches further up the limb was a shoot, 

 two to three years old, which bore diseased sprouts on its base and also six feet above 

 in its top. These sprouts were small, i. e., recent growths. There were no other dis- 

 eased sprouts on the tree, and, even on this shoot, most of the buds were dormant and 

 most of the foliage was green and full grown. The limb which bore these premature 

 peaches and diseased sprouts was cut away close to the body of the tree, although 

 almost the whole of it bore only healthy fruit and all of it bore only dark-green and 

 vigorous spring foliage. The stump was six inches in diameter and decaying at the 

 center. One limb remained. This bore green, healthy peaches upon all of its branches. 

 Its foliage was also full-grown, dark green, and very healthy in appearance. There was 

 not the least indication of disease. 



Result. — September 20, 1889. There is no fruit. This tree now bears an abundance 

 of healthy foilage and there are no diseased sprouts or other indications of yellows — 

 none whatever. 



This tree was reexamined October 20, 1890, and found to be diseased in all parts.* 

 The wind had blown away the top 9 feet above the ground, but three small branches 

 remained. These bore many diseased sprouts. The trunk also bore similar sprouts. 



F. — Orchard of George Davis, Still Pond, Maryland. — Trees set five years; cases of 

 1888, selected out of about thirty as most suitable for the experiment. The whole 

 orchard was thrifty and fair to look upon. 



(1) August 9, 1888. Variety, Smock. Two limbs were removed; one was left. Those 

 which were cut away bore premature peaches. The one which was left bore green 

 fruit, and seemed to be healthy 



Result.— September 20, 1889. Still diseased. 



(2) August 9, 1888. Variety, not recorded. This tree ramified near the ground into 

 three main limbs. Two small branches on one of these limbs bore premature peaches. 

 The remainder of that limb, i. e. most of it, and the rest of the tree, bore green, healthy 

 fruit. There were no diseased sprouts, and no other indications of yellows, the foliage 

 of the whole tree being green, full-grown, and healthy. 



Result. — September 20, 1889. The tree is now diseased in all parts. 



Cr. — Orchard of F. H. Harper, Still Pond, Maryland. — Trees set seven and one half 

 years; all cases of 1888; selected out of several hundred as being freest from symptoms 

 of yellows, and therefore most suitable for the experiment. As in Mr. Greene's orchard 

 and elsewhere, many otherwise promising trees were rejected because of slight 

 symptoms on the base of some of the main limbs. All of these trees were free-growing 

 and thrifty. None of the spring foliage was rolled, curled, or yellowish, except upon 

 one tree. The fine green color and robust growth of this foilage, even on affected limbs, 

 was very noticeable. The trees were freer from symptoms of disease than at Mr. 



* See note to G 3. 



