- 30 - 
TaenlothrlT -- . c J._332lfii (*or.), the gladiolus thrips 
For thrips on gladiolus chlordane dust is more effective than DDT 
dust but not as effective as the Fprry. During March and Aorll when DDT 
sprays are not effective chlcrdane sprays give more satisfactory control 
especially where a severe infestation has developed. — Kagie ( 309 ) » 
An emulsion of 0.5 pound of chlordane per 100 gallons of water 
applied 6 times at weekly intervals at the rate cf 130 gallons per acre 
gave 94 percent clean flowers up tp.two weeks after *.he last application.— 
Smith (42.3); Smith and Boswell V&#J . 
A 5-percent chlordane dust and a 50-percent chlordane wet table 
pewder at 2 pounds per 100 gallons of water v/ere very effective in kill- 
ing thrips within the leaf folds and flower buds. — Magie and Kelsheiner 
Qlft). 
Good control of thripa on gladiolus was obtained from the use of 5 
percent chlordane dust.— Jenkins (2J&) . 
Thrips , tabaci Lind., the onion thrips 
When tested on potted onion plants in the greenhouse, a dust mixture 
containing 2 percent chlordane gave excellent control of the onion thrips.— 
Sun e_t al . (k£Q) . 
In trials in Indiana in 19^6, 2- and 5-percent chlordane dusts and a 
5-95 DDT-smfur mixture gave the greatest reduction in the thrips popula- 
tion.— Gould (186). 
A pyrophyllite dust containing 5 percent of chlordane, applied at 
the rate of 10,5 pounds per acre, caused a 98 percent reduction in the 
number of thrips 2U hours after treatment and a 71 percent reduction 5 
days after treatment. These tests were made on seedling cotton at 
Bayview, Texas in the spring of 19^7 on 0.1 acre plots. — Fife ejfc al. (137). 
In 1947 in New Jersey, a 3-percent chlordane dust gave an outstand- 
ing reduction in thrips population and a fairly good increased yield of 
onions . — Pepper (.262) . 
Chlordane emulsion spray, 1 pound per 100 gallons of water, gave 
promising results in 19^7 in tests at Twin Falls, Idaho, causing a re- 
duction of 77 percent in the population. — Douglass and Shirck (1,3.2) . 
Chlordane, applied as a dust at weekly intervals, gave very good 
control of thrips on onions, reducing the number to an average of less 
than 9 per plant, whereas the untreated plants averaged 31 thrips per 
plant throughout the season. The plants in all treated plots were 
larger and greener than those in the check plots. — Floyd and Smith ( 1^6 ) . 
