CONTROL OF GARDEN DISEASES AND INSECTS. 



25 



Control. — It may be controlled to a considerable extent by using 

 nicotine sulphate. The last generation can be killed by pulling and 



Fig. 21.— Common asparagus beetle: «, Beetle; 6, egg; c, newly hatchod lurva ; a, full- 

 grown larva ; e, pupa. Much enlarged. 



promptly burning old infested stalks as soon as attack is noticed. 

 Late in the fall, instead of cutting off the tops, as is the usual custom, 

 pull them and burn them promptly. 

 The rnst-resistant plants mentioned 

 below are also somewhat resistant to 

 the miner. 



ASPARAGUS RUST. 



To control asparagus rust (fig. 22), 

 plant the resistant varieties Reading 

 Giant, Argenteuil, or Palmetto. 

 Spraying with Bordeaux mixture is 

 not recommended. 



ANTHRACNOSE. 



Bean anthracnose is caused by a 

 fungus which attacks the stems, leaves, 

 pods, and seeds of the plants. On 

 the stems and leaf veins it causes 

 elongated, sunken, dark-red cankers, 

 sometimes killing young plants and 

 often producing deformecl and yel- i''«- 22.— Asparagus rust, 



lowed leaves. Rounded or irregular sunken spots with a slightly 

 raised rim are produced on the ])ods. (Fig. 23.) The si)ots usually 

 have pink centers surrounded by a darker reddish border. In severe 

 cas0 the pods may be entirely covered by the sores and produce no 

 106342°— 17— Bull. 856 4 



