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METHODS OF AVOIDING INJURY 
Removing Crop Remnants 
Other insects have the habit of hiding away under rubbish or crop 
remnants, such as old potato vines or cabbage stumps. It pays to 
remove these as soon as the erop is off. The vegetable matter that they 
represent need not be lost if they are piled up in some odd corner and 
allowed to rot, so as to form humus which later may be used where 
desired. 
Destruction of Weeds 
Weeds are a genuine nuisance in the matter of encouraging noxious 
sects. It is common for a pest that feeds on a given variety of plant 
to make use of some closely related weed as its source of food until 
the cultivated crop is ready for attack. Some of our garden insects 
habitually thus eke out an existence in the early spring or late fall. 
In the case of other species it is the habit of the pest to go through 
its first generation of the season on a weed, a second generation coming 
forth in irresistible numbers as the time arrives for the cultivated 
crop to put in its appearance. 
Changing Time of Planting or Harvest 
Sometimes, as in the districts where wheat is attacked by Hessian 
fly, there is advantage to be gained by changing the time of planting. 
With the Hessian fly it is the aim of the grower to defer the planting 
of winter wheat for a few days beyond the customary time, so that the 
plants will not be large enough to serve the purposes of the fly when 
it comes out later to lay its eggs. On farms where this procedure is 
followed carefully and accurately, injury from this pest has largely 
been avoided. With other insects similar variations in farm practice 
have been worked out, wherever the habits of the pest make such a 
remedy possible. 
The Value of Poultry 
Countless numbers of insects are picked up by poultry when allowed 
to range over considerable area, as is especially the case where the 
colony system of housing is followed. Not only are troublesome 
