62 NEW YORK STATE MUSEUM 



hoed crop must be planted on such land, use an extra amount of 

 seed and feed liberally, supplementing this with good cultivation in 

 order to enable the crop to withstand successfully the probable 

 injury 



There is no practical method of destroying white grubs in the 

 soil, aside possibly from giving pigs the run of the field prior to 

 planting time. Experience has shown the practicability, in the 

 case of recently set strawberry fields, of digging out and destroy- 

 ing the grubs working at the base of individual plants. This 

 latter is somewhat costly and is practical only after the injury has 

 developed to such an extent that one can detect affected plants. 

 It can be advised only in cases where it is impractical to avoid 

 such conditions. 



Numerous white grubs in a lawn or in a garden where values 

 are relatively high can be destroyed by the use of a dilute kerosene 

 emulsion, say I part of the standard formula to 9 parts of water. 

 A liberal amount of the spray should be applied and then followed 

 by a thorough soaking with a garden hose in order to wash the 

 emulsion down, bring it into contact with the grubs and eventually 

 carry it beyond the reach of most of the root fibers. Carbon bi- 

 sulphid has also been advised for the destruction of grubs about 

 plants. This material, if employed, should be used with care and 

 be preceded by a few experiments to determine the possibilities 

 under given conditions, since the danger of injuring vegetation 

 would depend in considerable measure upon the texture of the 

 soil and the amount of moisture present. 



