-6- 



crop. In 1937 the averare infestation \vas G.l^j with only 2.6>c visible infesta- 

 tion. In 1938 the visible infestation w&s 1,5^'. In 1939 clipping vms carried 

 on until the middle of June when the number of infested twigs became so small 

 that the grower decided it would not pay to continue the practice. At harvest 

 time, August 25, the infestation in this orchard had built up until it averaged 

 13% of the crop. The cost of collecting infested tv.dgs amounted to 5/ per bush- 

 el of harvested fruit. But the resulting fruit was enough better to increase 

 the price by 16 5/4/ per bushel, thus netting a good profit on the investment. 



On the basis of these tests the following observations have been made: 



(1) The orchard should be' isolated from other peach and apple plantings. 



(2) v:hen attempting control by the removal and destruction of the infested 

 twigs and fruits care must be exercised to see that no trees are left untreated, 



(3) The later the peach variety the greater the number of times the orchard 

 will have to be looked over. (4) Seasonal conditions often cause considerable 

 difference in the population of Oriental fruit r.ioth. (5) Twig clipping should 

 be started early, the entire orchard wor)ced over at least every five days, and 

 the work continued until less than a month before harvest. (6) Usually more 

 attention should be given to border rovrs of trees than those in the middle of 

 the planting. (7) All infested twigs and fruits should be removed each time. 

 All dead and dying twigs should be removed thus simplifying later examination. 

 (8) Tree height should be controlled so that all infested twigs can be reached 

 from the ground with the aid of a short hook. Control by this method reduces 

 to a minimum brov.-n rot and the necessity of sprays to control this disease. 



(10) Debris should be kept cleaned up around the trees. Roadside stands and 

 packing houses should be kept screened until after the spring emergence is over. 



(11) Because of the larval habit of going from one twig to the other at least 

 tv/ice as many twigs will be removed as larvae. (12) Vfhere conditions make pos- 

 sible the adoption of this method, and if the work is efficiently done, clipping 

 of infested tvdgs will yield a reasonable return on the investment. 



A Long Lived P ea ch Tree 



Stressing the Importance of armual pruning of peach trees, A. J. Down- 

 ing in his book, "Fruit Trees of America," published in 1872, says he has seen 

 two peach trees of the same age side by side, one unpruned and the other regu- 

 larly shortened- in and both bearing about four bushels. The fruit of the 

 latter, hov/ever, was double the size and incomparably finer. He attributes 

 the old age of certain antiquated peach trees in France to the annual pruning 

 which they received. Referring to a tree near Villeneuve de Roi, he writes, 

 "The tree is trained against one of the v/ings of the mansion, covers a large 

 space and the circumference of the trunk taken at some distance from the ground 

 is 2-^- feet. It is knorm to be actually of 93 years' grov>'th and is believed to 

 be more than 100 years old. It is still in perfect health and vigor. It is 

 growing in strong soil but it has been regularly subjected to a uniform and 

 severe syst'^m of pruning, equiimlr-nt to our shortening-in system. VCiere can 

 any peach ti'ct of half this age be found in the United States, naturally a 

 much more favorable climate for it than that of France?" 



Citrus Fruits are Standardized, Hovr About Apples? 



In the February 15 Consumers' Guide reference is made to the fact that 

 the Federal Food and Drug Administration patrols the citrus fruit industry and 

 sees to it that only mature fruit is sold in interstate commerce. In the past, 

 after freezes or frosts the Federal P'ood and Drug Administration has seized 

 some citrus fruits. At the present time there are no official compulsory fed- 



