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Dilution of Pesticides

Pesticide Formulation	Amount of formulation needed per acre to obtain the following amounts of chemical per acre
	1/8 lb.	1/4 lb.	1/2 lb.	3/4 lb.	1 lb.
1% dust	12 1/2 lbs.	25 lbs.	50 lbs.	75 lbs.	100 lbs.
5% dust	2 1/2 lbs.	5 lbs.	10 lbs.	15 lbs.	20 lbs.
10% dust	1 1/4 lbs.	2 1/2 lbs.	5 lbs.	7 1/2 lbs.	10 lbs.
25% wettable powder	1/2 lbs.	1 lbs.	2 lbs.	3 lbs.	4 lbs.
40% wettable powder	1/3 lbs.	2/3 lbs.	1 1/4 lbs.	7/8 lbs.	2 1/2 lbs.
50% wettable powder	1/4 lbs.	1/2 lbs.	1 lbs.	1 1/2 lbs.	2 lbs.
75% wettable powder	1/6 lbs.	1/3 lbs.	2/3 lbs.	1 lbs.	1 1/3 lbs.
10-12% emulsion 1lb active ingredients/gallon	1 pt.	1 qt.	2 qt.	3 qt.	1 gal.
15-20% emulsion concentrate 1 1/2 active ingredients/ gallon	1/3 qt.	2/3 qt.	1 1/3 qt.	2 qt.	2 2/3 qt.
25% emulsion concentrate 2lb active ingredients/gallon	1/2 pt.	1 pt.	1 qt.	3 pt.	2 qt.
40-50% emulsion concentrate 4lb active ingredients/gallon	1/4 pt.	1/2 pt.	1 pt.	1 1/2 pt.	1 qt.
60-65% emulsion concentrate 6lb active ingredients/gallon	1/6 pt.	1/3 pt.	2/3 pt.	1 pt.	1 1/3 pt.
70-75% emulsion concentrate 8lb active ingredients/gallon	1/8 pt.	1/4 pt.	1/2 pt.	3/4 pt.	1 pt.

Rate	1 gallon of mix covers:
Feet of rows and spacing between rows
Gal/acre	Square ft	3 ft	3 1/2 ft	4 ft	4 1/2 ft
5	8,712	2,904	2,489	2,178	1,714
10	4,356	1,452	1,245	1,089	857
50	871	290	266	218	171
75	581	194	249	145	114
100	436	145	125	109	86

Percent	Dilution	P/M	Grams/Liter
1.0	1:100	10,000	10.0
0.1	1:1,000	1,000	1.0
0.01	1:10,000	100	0.1
0.001	1:100,000	10	0.01
0.0001	1:1,000,000	1	0.001

1 Part/Million (P/M):

 By Weight: 1 milligram per kilogram
 By Volume: 1 microliter per liter 
 One ounce in 7,500 gallons, or 1 lb in 120,000 gallons is 
 approximately 1 part per million by weight in water.

Service Forester's Handbook

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Dilution of Pesticides

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