Ohio State University Extension Bulletin

Orchard Spray Rates
How to Determine the Amount of
Pesticide and Water to Use in Your Orchard

Bulletin 892-01


Appendix 1: Tree-Row Volume Chart

This chart shows the dilute volume of spray mixture per acre required to spray tree fruit of various tree sizes and spacings, and the equivalent percentage of standard dilute volume, assuming that trees are mature enough to fill the rows.

Distance
between
rows
(feet)
Tree
canopy
width
(feet)
Tree
height
(feet)
Tree row
volume
per acre
(cubic
feet,
rounded
to
nearest
1,000)
Your dilute
spray volume
(gallons per
acre)
Your dilute spray volume as a
percentage of standard dilute volume
Mini-
mum1
Maxi-
mum2
Pome Fruit
(base 400 g.p.a.)3
Stone Fruit
(base 300 g.p.a.)3
Mini-
mum1
Maxi-
mum2
Mini-
mum1
Maxi-
mum2
40 22 22 527,000 369 527 92% 132% 123% 176%
30 20 20 581,000 407 581 102% 145% 136% 194%
30 20 15 436,000 305 436 76% 109% 102% 145%
26 16 12 322,000 225 322 56% 80% 75% 107%
24 14 12 305,000 213 305 53% 76% 71% 102%
22 14 12 333,000 233 333 58% 83% 78% 111%
20 15 12 392,000 274 392 69% 98% 91% 131%
20 12 14 366,000 256 366 64% 92% 85% 122%
20 12 12 314,000 220 314 55% 78% 73% 105%
20 12 10 261,000 183 261 46% 65% 61% 87%
20 10 10 218,000 152 218 38% 54% 51% 73%
19 11 10 252,000 177 252 44% 63% 59% 84%
18 12 12 348,000 244 348 61% 87% 81% 116%
18 10 10 242,000 169 242 42% 60% 56% 81%
18 8 8 155,000 108 155 27% 39% 36% 52%
17 9 9 208,000 145 208 36% 52% 48% 69%
16 8 8 174,000 122 174 30% 44% 41% 58%
15 7 8 163,000 114 163 28% 41% 38% 54%
14 6 9 168,000 118 168 29% 42% 39% 56%
14 6 8 149,000 105 149 26% 37% 35% 50%
14 6 7 131,000 91 131 23% 33% 30% 44%
13 6 7 141,000 99 141 25% 35% 33% 47%
12 6 6 131,000 91 131 23% 33% 30% 44%
12 3 8 87,000 61 87 15% 22% 20% 29%
1Minimum: For most orchards that are regularly pruned (0.7 gal per 1,000 ft3).

2Maximum: For unpruned orchards or unusually thick canopies (1.0 gal per 1,000 ft3).

3g.p.a. = gallons per acre.

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All educational programs conducted by Ohio State University Extension are available to clientele on a nondiscriminatory basis without regard to race, color, creed, religion, sexual orientation, national origin, gender, age, disability or Vietnam-era veteran status.

Keith L. Smith, Associate Vice President for Ag. Adm. and Director, OSU Extension.

TDD No. 800-589-8292 (Ohio only) or 614-292-1868



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