{"id":14529,"date":"2019-12-15T12:38:53","date_gmt":"2019-12-15T11:38:53","guid":{"rendered":"https:\/\/www.plantenplagen.nl\/plantenplagen\/spruce-needle-rust\/"},"modified":"2023-12-09T11:09:36","modified_gmt":"2023-12-09T10:09:36","slug":"spruce-needle-rust","status":"publish","type":"encyclopedia","link":"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/spruce-needle-rust\/","title":{"rendered":"Spruce Needle Rust"},"content":{"rendered":"

[vc_row][vc_column width=”2\/3″][vc_column_text el_id=”topentry” el_class=”topentry”]Spruce needle r<\/wbr>ust; this fungus is on the needles of spruce trees one half of the year and the other half on plants of the heather family.[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][vc_column_text el_id=”entrytxt” el_class=”entrytxt” css=”.vc_custom_1702116475859{padding-left: 20px !important;}”]Do not confuse with:<\/em>
\nColeosporium tussilaginis<\/a>[\/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=”5061″ 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”]Spruce needle r<\/wbr>ust<\/strong> (Chrysomyxa spp) <\/em>– a family of rust fungi (Pucciniales)<\/em>. Some of these fungi spend half the year on the needles of spruce trees and the other half on plants of the heath family (Ericaceae)<\/em>. Both spruce and Ericaceae species<\/em> are host plants of spruce needle r<\/wbr>ust (Chrysomyxa abietis).<\/i>
\nIn spring with cool weather and lots of wetness, the spores originating from the Ericaceae species<\/em> infect the young formed needles of the spruce trees. In summer, the fungi form orange powder-like spores. These infect the Ericaceae species<\/em>.
\nIn autumn, the infected needles yellow and then fall off.
\nSpruce needle r<\/wbr>ust hibernates in the branches of spruce and in Ericaceae species<\/em>.
\nThis fungus can also cause a single witch’s broom<\/a> in the spruce.[\/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_1576409725114{padding-left: 15px !important;}”]<\/p>\n