128 Salad Crops 



a black liaiid near the front margin enclosing six yellow 

 spots ; feeds on the leaves of celery and Is most destructive 

 to young plants. Control: Hand-picking is the most depend- 

 able remedy. 



Celery loopee (Autographa falcigera). — A looping cater- 

 pillar about 1% in. long, pale translucent green with a dark 

 median line bordered on each side with three light lines. It 

 sometimes feeds on the leaves of celery. Control: Hand-pick- 

 ing is the only available measure, as arsenicals cannot be used 

 on celery. 



Tabnished plant-bug (Lygus pratennis). — A small incon- 

 spicuous brownish hug, about % in. long, The adults often 

 attack celery plants that are blanching, puncture the tender 

 stalks, producing large bi'own wilted spots and a blackening 

 of the tissues at the joints. No satisfactory method of con- 

 trol is known. 



The negro bug (Thyreocoris pulicarims). — A short, broad, 

 shining black strongly convex stink-bug about ^ in. long, 

 that often attacks celery, puncturing the stalks and stunting 

 or killing them. The injury to celery is mostly done by 

 the adults which have bred on various weeds such as beggar- 

 ticks, tick-seed, etc. Control: Destroy all weeds in the vicinity 

 of celery on which the bugs may breed. Spraying is not 

 efCective since many of the bugs burrow in the soil where they 

 cannot be reached. 



Pahsnip webwokm (Depresaria heracliana), — See under 

 Parsnip. 



Spinach aphis (Myzus persicw). — See under Spinach. 



Celery is practically a universal table supply in North 

 America, prized for its crisp aromatic leaf-stalks, as well 

 as for the decorative character of the finer parts of the 

 foliage. The seed is sometimes used in cookery for flav- 

 oring, particularly in the preparation of soups. The whit- 

 ened leaf-stalks are usually eaten raw, but they are also 

 cooked in different ways. 



