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These sprays should continue on a schedule of every 7–10 days until harvest. Upon harvest, one or two postharvest applications should be administered, beginning 2–3 weeks after harvest. It is suggested that spraying alternate sides of trees on a 7-day program is more effective than spraying both sides of trees on a 10-day schedule.
Spraying occurs during all phases, blossoms, green fruit, and mature fruit. Stone fruit trees' only natural defences are “skin” and chemical reactions to being attacked by the fungi, but this is a limited defence, so spraying and orchard sanitation are the best way to control spread of the fungus.
During post-harvest treatment, harvested fruit are often coated with fungicides such as phenols or benzimidazoles to further protect against storage rot, especially on fruit being shipped overseas. [10] Both cultural and chemical practices need to work together to maintain a safe and practical spraying schedule for a grower.
A fungicide spray schedule may also be put into place. It is recommended to spray in intervals of about two weeks. [ 9 ] Examples of some recommended fungicides are Bulletin 506-B2, Midwest Commercial Small Fruit and Grape Spray Guide for commercial growers and Bulletin 780, Controlling Disease and Insects in Home Fruit Plantings for backyard ...
A manual backpack-type sprayer Space treatment against mosquitoes using a thermal fogger Grubbs Vocational College students spraying Irish potatoes. Pesticide application is the practical way in which pesticides (including herbicides, fungicides, insecticides, or nematode control agents) are delivered to their biological targets (e.g. pest organism, crop or other plant).
It is more difficult to control storage pit in highly susceptible cultivars as field spraying may not be able to apply sufficient calcium to the fruit. Improved control can be obtained by also dipping the fruit in a 2–3 per cent calcium chloride solution after harvest and rinsing the fruit in water after about 36 hours. [citation needed]