{"id":12555,"date":"2019-02-16T12:45:50","date_gmt":"2019-02-16T11:45:50","guid":{"rendered":"https:\/\/www.plantenplagen.nl\/plantenplagen\/gummosis\/"},"modified":"2023-01-03T11:10:55","modified_gmt":"2023-01-03T10:10:55","slug":"gummosis","status":"publish","type":"encyclopedia","link":"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/gummosis\/","title":{"rendered":"Gummosis"},"content":{"rendered":"

[vc_row][vc_column width=”2\/3″][vc_column_text el_id=”topentry” el_class=”topentry”]Gummosis can be caused by pruning or it is a result of weakening of the tree.
\n[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][vc_column_text el_id=”entrytxt” el_class=”entrytxt” css=”.vc_custom_1550317369685{padding-left: 20px !important;}”][\/vc_column_text][\/vc_column][\/vc_row][vc_row gap=”35″ css=”.vc_custom_1532162142715{background-color: #e6e6e6 !important;}”][vc_column width=”1\/2″][vc_single_image image=”6675″ img_size=”medium” add_caption=”yes” style=”vc_box_rounded” onclick=”img_link_large”][\/vc_column][vc_column width=”1\/2″ css=”.vc_custom_1532162092980{background-color: #e6e6e6 !important;}”][vc_column_text el_class=”entrytxt”]Gummosis<\/strong> can be caused by pruning or it is a result of weakening of the tree. Gummosis is then a secondary infestation.
\nStone fruit trees (cherry, plum<\/a>, peach<\/a>) are generally pruned after harvest. In winter, pruning makes the tree susceptible to fungus.
\nStone fruit trees tolerate pruning only moderately. Excessive pruning makes the tree “bleed”: the tree oozes from the cuts. The moisture dries into a brown substance. In addition to pruning, wind and frost damage (cracks) can also cause forming of gummy sap on the damaged areas. These are equally entries of fungus and disease.
\nTrees affected by fungi and diseases are weakened, which can cause spontaneous  formation of gummy sap. The peach tree is susceptible to Peach Leaf Curl<\/a> (Taphrina deformans)<\/em>, and once weakened, gummosis often occurs. Abundant harvesting can also cause forming of gummy sap in peach trees.
\nAlso in the Japanese cherry<\/a> (Prunus serrulata)<\/em>, the formation of gum in various places on the trunk and branches is a result of infestation by bacterial canker<\/a> (Pseudomonas syringae)<\/em> and thus secondary.[\/vc_column_text][\/vc_column][\/vc_row][vc_row equal_height=”yes”][vc_column width=”1\/3″][vc_custom_heading text=”Where to find” font_container=”tag:h4|text_align:center|color:%23ffffff” google_fonts=”font_family:Lato%3A100%2C100italic%2C300%2C300italic%2Cregular%2Citalic%2C700%2C700italic%2C900%2C900italic|font_style:400%20regular%3A400%3Anormal” css=”.vc_custom_1537946500082{background-color: #536895 !important;}”][vc_column_text el_id=”entrytxt” el_class=”entrytxt” css=”.vc_custom_1550317673552{padding-left: 15px !important;}”]<\/p>\n