324 INJURIOUS INSECTS, WITH TREATMENT 



Treatment. Make four applications of lime-sulfur (33 Beau- 

 me"), 1 gallon in 75 gallons of water, adding "Black-leaf 40" 

 tobacco extract at the rate of 1 part in 1800 parts of the di- 

 lute lime-sulfur, as follows : 

 First. Just after most of the petals have fallen from the 



blossoms. 



Second. Ten or fourteen days after the first. 

 Third. From three to four weeks after the second. 

 Fourth. In August or September, to protect later growths of 



foliage. (U. S. Bureau of Entomology.) 



Parsley. PARSLEY- WORM (Papilio asterias). Larva, inch and a 

 half long, light yellow or greenish yellow with lines and spots ; 

 feeding upon leaves of parsley, celery, carrot, etc. When the 

 worm is disturbed it ejects two yellow horns, with an offensive odor, 

 from the anterior end. 



Remedies. Hand-picking. Poultry are said to eat them some- 

 times. Upon parsnip, arsenicals. 



Parsnip. PARSLEY- WORM. See under PARSLEY, above. 

 PARSNIP WEB- WORM (Depressaria heracliana). Larva, about a half 

 inch long, feeding in the flower cluster and causing it to become 

 contorted. 



Treatment. Arsenicals, applied as soon as the young worms 

 appear, and before the cluster becomes distorted. Burn the dis- 

 torted umbels. Destroy all wild carrots. 



Pea. PEA-WEEVIL or PEA-BUG (Bruchus pisi). A small brown-black 

 beetle, living in peas over winter. The beetle escapes in fall and 

 spring, and lays its eggs in young pea-pods, and the grubs live in 

 the growing peas. 



Treatment. Hold over infested seed for one year before plant- 

 ing. Late planting in some localities. Fumigation with carbon 

 bisulfid. 



PEA APHIS (Macrosiphum pisi). A rather large green plant-louse, 

 often attacking peas in great numbers and causing enormous 

 losses. 



Treatment. Rotation of crops. Early planting. When peas 

 are grown in rows, the brush-and-cultivator method may be used. 

 The plant-lice are brushed from the plants with pine boughs, and 

 a cultivator follows stirring the soil. This operation should be 



