30 NORTHERN SEED COMPANY 
e Annual Weeds and Woody Species 
DUPONT 2,4-D ESTER WEED KILLER—An isopropyl ester formula- 
tion containing 3.34 pounds of 2,4-D acid equivalent per gallon. The 
ester is usually used for weed control under difficult conditions or where 
hard to kill species predominate. It is particularly effective for control 
of woody species. 1 gal. $4.60; 5 gal. $4.30 per gal.; 30 gal. $4.10 per 
gal.; 50 gal. $38.95 per gal. 
@® Brush Killer 
DUPONT 2,4,5-T ESTER BRUSH KILLER—Contains 4 pounds of 
2.4,5-T acid equivalent per gallon. It is especially recommended 
for control of concentrated stands of some brush resistant to 2,4-D. 
1 gal. $13.95; 5 gal. $13.75 per gal.; 30 gal. $13.55 per gal. 
® Grass Killer 
DUPONT 90% SODIUM TCA WEED KILLER—A grass killer for 
non-selective control in areas not planted to crops. It is also recom- 
mended for pre-emergence use in sugar beets and for control of annual 
grasses in established alfalfa. 10 lb. canister 60c per pound; 50 lb. 
drum 50c per lb.; 100 Ib. drum 49c per Ib. 
® Karmex Soil Sterilization 
DUPONT 80% CMU WEED KILLER—A product to use where it is de- 
sireable to keep the ground bare of vegetation. It comes as a powder 
to be mixed with water, and it controls a wide range of annual and per- 
ennial grasses and herbaceous weeds. As little as 40 pounds per acre or 
half a cup per 100 square feet is enough for effective weed control. 
2 lb. canister $9.10; 10 lb. drum $40.50; 50 lb. drum $187.50. 
® Wetting Agent for Livestock and Agricultural Sprays 
DUPONT SPREADER-STICKER—For increasing the effectiveness of 
agricultural chemical spray mixtures. It makes the mixture spread 
evenly over the surface, and makes it resistant to weathering. It can 
be used in sprays for crops, livestock, or weed control. 1 pt. can $1.20. 
1 gal. can $8.55. 
HEPTACHLOR—This chemical was introduced two years ago and has 
made a place for itself in the control of alfalfa weevil as well as 
cther insects. Diluted with water and sprayed at the rate of 4 ounces 
of technical material per acre, early in the Spring when alfalfa shoots 
start has proven the most effective control. This method kills the adult 
weevil before egg laying starts and gives good control for the entire 
season. One gallon of the four pound technical material we carry will 
do eight acres. 1 gal. $6.85; 5 gal. can $38.25; 30 gal. drum $192.00. 
@ Alfalfa Weevil, Adult—4 oz. per 
acre. Apply before Alfalfa is 2 
inches tall. 
@ Alfalfa Weevil, Larvae—3, to 1 
oz. per acre. 3 day limit before 
cutting or pasturing. 
Cutworms—10 to 12 oz. per acre 
Lygus Bugs—83 to 8 oz. per acre Adult Alfalfa Weevil 
Grasshoppers—3 to 4 oz. per acre 
Mosquitos—.05 to 0.2 oz. per acre 
