Stylet-Oil is a protectant spray chemical whose performance is influenced by the quality of the spray coverage on the surface of the plant. As with all protectant chemicals, there are certain environmental influences which may compromise product performance. These environmental influences include ―

Temperature: Do not spray Stylet-Oil when freezing temperatures are anticipated within 48 hours of an oil application, above 90° F (32° C) or when plants are under heat or moisture stress. On vegetables: Do not apply when temperatures are below 50° F (10° C).

• if daytime temperatures exceed 90° F, spraying should be done at night or early morning
• the risk from spray injury at high temperature is due to the likelihood of heat or moisture stress in the plants, a condition where spray droplets can be absorbed into the leaf

Frost:

• do not apply Stylet-Oil within 48-hours of a predicted frost or freeze
• do not apply Stylet-Oil within 48-hours after a frost or freeze

Wet Weather: Do not spray wet foliage. Rain or overhead irrigation has the potential to wash Stylet-Oil off plant surfaces. The use of frequent overhead irrigation can compromise a Stylet-Oil spray program. We do not recommend the use of Stylet-Oil where a twice per week application schedule is required and overhead irrigation is the sole source of irrigation.

Considerations Under Wet Weather Conditions:

• rain in excess of ½ to ¾ - inch will remove most of the oil residue from foliage
• do not apply Stylet-Oil to wet foliage or poor spray coverage will result. Wait until the outer canopy has dried before applying the oil
• oil residue can be de- tected by immersing leaves in water; the formation of water beads indicate oil residue is on the surface of the leaf (see photo opposite)

Windy Conditions: Spraying pesticides under windy conditions can result in poor spray coverage. For this reason we do not recommend spraying Stylet-Oil (or anything else) if the wind exceeds 10 miles per hour. (Note: Some states may mandate maximum wind thresholds while spraying chemicals. Consult your local state regulations.)

Spraying Vegetables Under Windy Conditions:

• under wind conditions of 0 to 5 mph, lower nozzles to within 12 to 15-inches of the plant canopy
• under wind conditions of 6 to 10 mph, lower nozzles to within 8 to 10-inches of the canopy and slow down the tractor
• when practical, spray at night when wind conditions are less prevalent

Dusty Conditions: The accumulation of significant amounts of dust (where leaves are actually turning the color of the dust) will adversely affect an oil spray program because dust will absorb the oil.

Considerations Under Dusty Conditions:

• minimize vehicular traffic and drive slowly on perimeter roads
• overhead irrigation can be useful so long as it is done in moderation
• application of dust retardant chemicals (such as lignum sulfonate) can be useful