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Typically fungicides marketed to combat leaf, tip, and flower blight on ornamentals will effectively manage disease development by inhibiting fungal growth and development. Fungicides with active ingredients such as propiconazole or mancozeb, a combination of zinc, manganese, and ethylene bisdithiocarbamate, should help prevent disease development.
The fungicide should be sprayed sufficiently in order to completely cover the tree. The rates per acre of application range from 2–5 fluid ounces on developing trees to 8–12 fluid ounces on mature trees. [2] They are protectant fungicides, meaning that they work best to prevent disease from happening when sprayed before any disease is detected.
Dibotryon morbosum is a fungus that affects the genus Prunus. Included in this genus are multiple species of trees and shrubs, such as: Dibotryon morbosum infects are Prunus serotina (wild cherry trees), Prunus persica (peach trees), Prunus domestica (plum trees), and Prunus cerasus (sour cherry trees). [3]
This infection can lead to tree death within 3–4 years of the first serious outbreak. Orchards in high humidity areas result in the largest yield loss, often in excess of 50%. [1] Yield loss tends to rise every year as the tree becomes weaker each year after infection. Three fungicide applications can achieve 60–80% control of leaf spot. [2]
This is a list of fungicides. These are chemical compounds which have been registered as agricultural fungicides . The names on the list are the ISO common name for the active ingredient which is formulated into the branded product sold to end-users. [ 1 ]
Fungicide sprays applied in a timely manner are highly effective against the rust diseases during the apple cycle. [12] Most protective fungicide sprays are applied four times at 7- to 10-day intervals, starting with pink bud on crabapples. These applications are to protect the apples from spores being released from the cedar host in mid-spring.