62 NEW YORK STATE MUSEUM 



hued crojj must be planted uii such land, use an extra amount of 

 seed and feed lil)erally, sui)j)lementing this with j^ood cultivation m 

 order to enable the cr(jj) to withstand successfully the probable 

 injury 



There is no jjractical method of destroying white grubs in the 

 soil, aside possibly from giving j)igs the run of the field prior to 

 plantnig time. I'lxjjerience has showa the j^racticability, in the 

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

 ing tlie 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 ])art of the standard formula to 9 parts of water. 

 A liberal amount of the s])ray should be ajjplied 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 l)e 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. 



