{"id":13031,"date":"2018-09-04T11:07:31","date_gmt":"2018-09-04T09:07:31","guid":{"rendered":"https:\/\/www.plantenplagen.nl\/plantenplagen\/cucumber\/"},"modified":"2023-11-26T14:57:16","modified_gmt":"2023-11-26T13:57:16","slug":"cucumber","status":"publish","type":"encyclopedia","link":"https:\/\/www.plantenplagen.nl\/en\/plantenplagen\/cucumber\/","title":{"rendered":"Cucumber"},"content":{"rendered":"

[vc_row][vc_column width=”2\/3″][vc_column_text el_id=”topentry” el_class=”topentry”]The cucumber belongs to the cucurbits<\/a> and was cultivated over 3,000 years ago.[\/vc_column_text][\/vc_column][vc_column width=”1\/3″][\/vc_column][\/vc_row][vc_row content_placement=”middle” css=”.vc_custom_1627123481876{padding-top: 0px !important;padding-right: 5px !important;padding-bottom: 0px !important;padding-left: 5px !important;background-color: #ccffff !important;border-radius: 20px !important;}” el_id=”mobile”][vc_column offset=”vc_hidden-lg vc_hidden-md vc_hidden-sm”][vc_column_text css=”.vc_custom_1649258156679{padding-top: 0px !important;padding-right: 0px !important;padding-bottom: 0px !important;padding-left: 0px !important;}” el_id=”mobiel”]<\/p>\n

You are viewing the mobile-adapted version of the page.<\/span>
\nThe one for tablets, laptop and desktop also provides general information, such as origin and cultivation.<\/span><\/p>\n

[\/vc_column_text][\/vc_column][\/vc_row][vc_row gap=”35″ css=”.vc_custom_1532162142715{background-color: #e6e6e6 !important;}”][vc_column width=”1\/2″ offset=”vc_hidden-xs”][vc_single_image image=”1343″ img_size=”medium” add_caption=”yes” style=”vc_box_rounded” onclick=”img_link_large”][\/vc_column][vc_column width=”1\/2″ css=”.vc_custom_1649258167112{background-color: #e6e6e6 !important;}” offset=”vc_hidden-xs”][vc_column_text el_id=”topentry” el_class=”topentry”]Cucumber<\/strong> (Cucumis sativus)<\/em>. Pre-sow in seed trays from mid-April – mid-May the plants can go outside. Cucumbers for indoor cultivation (greenhouse) can be sown earlier – mid-March. Also from cucumbers, the shoots should be removed from the leaf axils (Pinching). Topping the plant is necessary for a larger harvest. No need to sow your own; grafted cucumber plants are available in stores. These are quite resistant to disease and produce a rich harvest. Cucumbers need to be tied up. Cucumbers are susceptible to mildew: ensure an open, sunny spot and water regularly. Cut away affected leaves and excess leaves (the long shoots without flowers). In greenhouse cultivation, it is necessary to aerate the greenhouse regularly (door open!). In June and July, the harvest is plentiful. Keep harvesting, and the plant will continue to produce cucumbers.[\/vc_column_text][\/vc_column][\/vc_row][vc_row equal_height=”yes”][vc_column width=”1\/3″][vc_custom_heading text=”Bugs” 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_1532164328547{background-color: #585858 !important;}”][vc_column_text el_class=”entrytxt”]<\/p>\n

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Red spider mite<\/a>, photo: Rasbak – CC BY-SA 3.0<\/figcaption><\/figure>\n

Dot-shaped spots on the leaf; mites<\/a> on the underside: Red spider mite (Tetranychus urticae)<\/em>.<\/p>\n

Deformed fruits: European tarnished plant bug<\/a> (Lygus rugulipennis)<\/em>.<\/p>\n

Deformed leaf: Aphid<\/a> (Aphidoidea).<\/p>\n

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Greenhouse whitefly<\/a>, photo: Yvonne Boereboom<\/figcaption><\/figure>\n

Leaf turns yellow and bumpy; eggs on the underside of the leaf: Greenhouse whitefly<\/a> (Trialeurodes vaporariorum)<\/em>.<\/p>\n

In greenhouse cultivation: silvery spots surrounded by dark green spots (excrement): Onion<\/a> thrips<\/a> (Thrips tabaci)<\/em>.<\/p>\n

Curled leaves; in some places there is an aphid of about 2 mm in size: Green peach aphid<\/a> (Myzus persicae)<\/em>.[\/vc_column_text][\/vc_column][vc_column width=”1\/3″ css=”.vc_custom_1532102781238{background-color: #ffffff !important;}”][vc_custom_heading text=”Fungi & diseases” 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_1537951542490{background-color: #585858 !important;}”][vc_column_text el_class=”entrytxt”]<\/p>\n

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Powdery mildew<\/a>, photo: Rasbak – CC BY-SA 3.0<\/figcaption><\/figure>\n

White spots on leaves; growth retarded: Powdery mildew (Ascomycete strain)<\/em>.<\/p>\n

White, woolly mold: Sclerotinia disease<\/a> (Sclerotinia sclerotiorum)<\/em>.<\/p>\n

Plant wilts and leaves turn yellow on one side. White (sometimes pink) mold develops on stem and tendrils: Fusarium wilt<\/a> (Fusarium oxysporum)<\/em>.<\/p>\n

Wet, rotten spots at the bottom of the stem: Fusarium foot rot<\/a> (Fusarium solani).<\/em><\/p>\n

Leaf becomes covered with a powdery mold: a sort of Powdery mildew (Podosphaera fusca<\/a>)<\/em>.<\/p>\n

Lower leaves turn yellow, plant wilts because the roots can no longer absorb water: infestation by Black root rot of cucumber (Phomopsis sclerotioides)<\/em>.<\/p>\n

Square spots on leaf; bacterial slime, fruit will rot: Angular leaf spot (Pseudomonas syringae)<\/em>.<\/p>\n

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Cucumber mosaic virus<\/a>, photo: DieterO – CC Public Domain<\/figcaption><\/figure>\n

Yellow-green, circle-shaped spots on leaves; serpentine lines: Cucumber mosaic virus<\/a> (CMV).<\/p>\n

Leaf and fruit become covered by a thick layer of fungus and wilt: Verticillium wilt<\/a> (Verticillium spp)<\/em>.<\/p>\n

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Downy mildew<\/a> on cucumber, photo: Rasbak – CC BY-SA 3.0<\/figcaption><\/figure>\n

White fungal fluff on the underside of the leaves: Downy mildew (Pseudoperonospora cubensis)<\/em>. It usually involves the lower leaves because the fungus get onto the leaf by splashing rain. In powdery mildew (a species of Ascomycete fungi<\/em>), the fluff is on the top of the leaves.<\/p>\n

Light and dark green spots on young leaves, emergence of dark green bumps. Full-grown leaves show a blotchy pattern: Cucumber green mottle mo<\/wbr>saic virus (CGMMV).<\/p>\n

Cucumbers left on the ground develop small, tan to brown, watery spots. As the disease spreads, the spots expand and become crusty and irregularly shaped: belly rot<\/a> (Rhi<\/wbr>zoctonia solani)<\/em>.[\/vc_column_text][\/vc_column][vc_column width=”1\/3″ css=”.vc_custom_1532102799994{background-color: #ffffff !important;}”][vc_custom_heading text=”Other” 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_1532164377225{background-color: #585858 !important;}”][vc_column_text el_id=”entrytxt” el_class=”entrytxt”]Leaf stalks grow out of leaf axils: offshoots inadequately removed – Pinching<\/a>.<\/p>\n

Harvested cucumbers taste bitter; this can have several causes:<\/em><\/p>\n