Table 4.2. Approximate spray volume needed for coverage at the full-leaf stage of canopy
development in orchards using high-volume (HV) dilute and low-volume (LV) concentrate
sprays made with airblast sprayers

Tree height

x width

Gallons per acre^a

Spray distance between tree rows (ft)

a_{Nearest whole gallon amounts, based on standard dosage volumes of 0.70 gallons/1,00O ft}3 _{TRV for HV and 0.09}
gallons/1,OO0 ft³TRV for LV sprays.
b_{LV applications of less than 25 gpa are not recommended because of equipment limitations.}
c_{Data not given because the combination of this tree size on this planting density is unlikely}
Note: For early season HV sprays, the 0.70 gallon rate may result in excessive drip. A calibration volume of 0.25 to 0.35 gallons
is recommended. Check for drip to ensure coverage.

TRV Recommendations

Mix pesticides at not less than three and not more
than four times the standard dilute concentration per 100
gallons of water as stated on the product label. Apply
this mixture at the rate of 0.09 gallon per 1,000 cubic feet
TRV. In no case is a spray volume of less than 25
gallons per acre recommended. Do not use less on a per
acre basis than the label recommended amount per 100
gallons.

Examples of Conventional and TRV Rates. A
few examples are given below in Table 4.3to illustrate
the application rates as indicated in the preceding
discussion. Use Table 4.2 as a guide for spray volumes
needed for various tree sizes and spacings. Consult actual
labels for use rates per 100 gal.
We use an orchard planting with trees that are 12.5 ft.

tall with a canopy diameter of 12 ft. (tree ht. x width =
150 ft²). Tree spacing is 18 ft. between rows, therefore

28

1998 New Jersey Commercial Tree Fruit Production Guide