EXPERIMENT STATION BULLETINS. 199 



they hav*e all become settled in their burrows, the early varieties may 

 be pulled up and burned leaving the later ones free from the borers. 

 Many times it is possible to c«t out the larvae by making a longitudinal 

 slit in the vine. 



Starting new 7'oots at the joints. — Last, but perhaps best of all, the 

 vines may be induced to put out roots at short intervals by placing a 

 little soil over the joints, thus supplying plenty of food to the vine 

 even after the tap-root has been destroyed. If the plant escapes until 

 it has conHuenced to run well, it is easy to induce roots to grow by 

 pulling a couple of hoefuls of soil over some of the joints. 



Fig. 48. — Squash-borer larvae in tunneled vine, enlarged. After Prof. J. B. Smith. 

 INSECTS AFFECTING THE FOLIAGE. 



Cucumber-beetle (see Insects of the Cucumber). 

 Squash-bug (see Insects affecting the Cucumber). 



INSECTS AFFECTING SWEET-CORN.* 



INSECTS AFFECTING THE SEED IN THE GROUND. 



Ground-beetles (Agonoderus palUpes). 



From time to time, one hears that seed corn refuses to germinate, 

 and whole fields have to be replanted. This usually occurs during a 

 wet cold spring. A careful examination of such seed which has lain in 

 the ground for some time, shows, in some cases at least, the presence of 

 a small beetle in the kernel. Sometimes almost the entire contents of 

 the kernel is found to be gnawed out, leaving a mere shell consisting of 

 the hard, outer coat. This form of injury seems to occur over rather 

 extended areas when it occurs at all. The writer had noticed very few 

 instances before the spring of 1904, when a number of complaints to- 

 gether with specimens of the culprits came in. The beetles that do the 

 injury are elongate, flattened, and of a brownish-yellow color. The 



* As the aim of this bulletin is to cover garden and trucli crops only, and not those of the field, 

 only such are included as are likely to attack sweet-corn. It is intended to discusss methods such as 

 can be applied satisfactorily on a comparatively small scale. 



