112 N. H. AGR. EXPERIMENT STATION. [Bulletin 171 



owner has use for, and then only such as appear sound on the 

 regular occasions when fruit is desired. Fruit that is bruised 

 by falling, is beginning to decay, or is infested, is left to rot 

 beneath the trees — conditions inevitably tending toward per- 

 sistent infestation. The commercial orchard not only receives 

 regular and thorough spraying for codling moth and apple dis- 

 •eases, with the indirect effect on the maggot that follows such 

 spraying, but the care naturally extends to the product of the 

 -orchard and its prompt disposal by sale. 



Trees in the home orchard are apt to be located in such places 

 that consistent care of the fruit is difficult. Often, in New Hamp- 

 shire, such trees are situated in odd corners about the buildings, 

 along a stone wall, or in other similar location. In a commercial 

 orchard conditions are usually the reverse. Facility for. proper 

 care of the trees is a leading consideration in their location. 



In New Hampshire, small farm orchards are often closely 

 adjacent to neglected, infested wild apples. The prevalence of 

 so-called natural fruit throughout much of the state has already 

 been noted. Its frequent proximity to the home orchard does 

 not tend to reduce infestation of the latter. Trees in a large 

 •commercial orchard are apt to be free from this source of trouble. 



STORAGE OF APPLES ATTACKED BY THE MAGGOT. 



It happens occasionally, in a season of abundance of the maggot, 

 that the commercial grower finds certain winter fruit exhibiting 

 egg punctures, due to flies that have come in from non-fruiting 

 early trees. Such fruit may be but slightlj'' attacked, and if 

 the varieties are of hard, winter sorts, little besides some incon- 

 spicuous egg punctures may be in evidence. In other words the 

 fruit may be commercially marketable at picking time. 



It is still the practice of some growers to retain the fruit in 

 piles, in the orchard or on the barn floor, for a considerable period 

 after picking. Eventually the apples are barreled, and may pass 

 into the hands of the fruit buyer or may be stored in a farm fruit 

 cellar. Storage in bins in a fruit cellar is practised on occasion. 



Observations have shown that when the weather is warm fol- 

 lowing the picking season, fruit that happens to be attacked by 

 the maggot and is kept for a time in comparative warmth, is 



