Pest Management Guidelines - FieldCrops
Pest Management Guidelines
A Cornell Cooperative Extension Publication

  
Cornell Guide for Pest Management of Field Crops

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7 Total Vegetation Control and Conversion Tables

7.1 Total Vegetation Control

Weed control around farm buildings improves the appearance of the farm and reduces maintenance and labor costs. The chemicals available for this use include those listed in Table 7.1.

 

Table 7.1. Herbicides for total vegetation control.

Amount of Products per Acre

Remarks and Limitations

3–15lb. Hyvar X
              or
1-1/2–12 gal. Hyvar X-L

GROUP 5 HERBICIDES• Apply before weed emergence or when weeds are young and actively growing. Do not apply when ground is frozen. Low rates are for annuals; high rates are for hard-to-control perennials.

4–30 lb. Krovar I DF

GROUP 5 and 7 HERBICIDES• Apply before weed emergence or when weeds are young and actively growing. Low rates are for annuals; high rates are for hard-to-control perennials.

3–4 gal. Velpar L

GROUP 5 HERBICIDE• Apply just before or soon after weed emergence. Do not apply to frozen or snow-covered soil. Use the high rates for hard-to-control perennials.

5–10 gal. Pramitol 25E

GROUP 5 HERBICIDE• Apply before weed emergence or when weeds are young and actively growing. Low rates are for annuals; high rates are for biennials and perennials.

220–400 lb. Pramitol 5PS

GROUP 5 HERBICIDES• May be applied before or after plant growth begins. Low rates are for annuals; high rates are for

5–7.5 lb. †*Spike 80DF
             or
5–20 lb.†*Spike 20P

GROUP 7 HERBICIDES• Apply anytime except when the ground is frozen or the soil is saturated with moisture. For optimal results, applications should be made just before or just after emergence of plants in spring.

• Refer to Section 6.6.1 for information on herbicide resistance management and site of action groups.

 

7.2 Conversion Tables

 

Table 7.2. Amounts of herbicide liquid formulation needed to equal various rates per acre.

Concentration of herbicide formulation

Amount of Commercial Product to Use per Acre Broadcast to Obtain an Active Ingredient Rate of

1/8 lb.

1/4 lb.

1/2 lb.

1 lb.

2 lb.

Pounds of active ingredientper gallon of product

Pints

1

1

2

4

8

16

2

0.5

1

2

4

8

3

0.33

0.67

1.33

2.67

5.33

4

0.25

0.5

1

2

4

5

0.2

0.4

0.8

1.6

3.2

6

0.16

0.33

0.67

1.33

2.67

6.7

0.15

0.3

0.59

1.19

2.38

7

0.14

0.28

0.56

1.13

2.25

8

0.13

0.25

0.5

1

2

 

 

Table 7.3. Amounts of herbicide dry formulation needed to equal various rates per acre.

Concentration of Herbicide Formulation

 

Amount of Commercial Product to Use per Acre Broadcast to Obtain an Active Ingredient Rate of

1/8 lb.

1/4 lb.

1/2 lb.

1 lb.

2 lb.

Pounds of active ingredient in dry formulations

Pounds1

10

1.25

2.5

5

10

20

20

0.62

1.25

2.5

5

10

25

0.5

1

2

4

8

30

0.42

0.83

1.67

3.33

6.66

40

0.31

0.62

1.25

2.5

5

50

0.25

0.5

1

2

4

65

0.192

0.38

0.77

1.54

3.08

70

0.178

0.36

0.72

1.43

2.86

75

0.167

0.33

0.62

1.33

2.67

80

0.156

0.31

0.62

1.25

2.5

90

0.139

0.28

0.55

1.11

2.22

1To convert to ounces, multiply by 16.