{"id":1503,"date":"2026-08-03T13:40:28","date_gmt":"2026-08-03T10:40:28","guid":{"rendered":"https:\/\/www.topcz.top\/?p=1503"},"modified":"2026-08-03T13:40:28","modified_gmt":"2026-08-03T10:40:28","slug":"plisen-na-rajcatech-udelejte-to-okamzite-abyste-zachranili-urodu","status":"publish","type":"post","link":"https:\/\/www.topcz.top\/?p=1503","title":{"rendered":"Pl\u00edse\u0148 na raj\u010datech? Ud\u011blejte to okam\u017eit\u011b, abyste zachr\u00e1nili \u00farodu"},"content":{"rendered":"\n

Pl\u00edse\u0148 na raj\u010datech pat\u0159\u00ed mezi nejv\u011bt\u0161\u00ed obavy ka\u017ed\u00e9ho p\u011bstitele. Sta\u010d\u00ed n\u011bkolik de\u0161tiv\u00fdch a vlhk\u00fdch dn\u016f a na listech, stonc\u00edch nebo plodech se mohou objevit prvn\u00ed tmav\u00e9 skvrny. Pokud zas\u00e1hnete v\u010das, m\u016f\u017eete zpomalit \u0161\u00ed\u0159en\u00ed choroby a zachr\u00e1nit \u010d\u00e1st \u00farody.<\/strong><\/p>\n\n\n\n

Nejd\u016fle\u017eit\u011bj\u0161\u00ed je nejprve rozpoznat, zda skute\u010dn\u011b jde o pl\u00edse\u0148, a n\u00e1sledn\u011b odstranit zdroje infekce a vytvo\u0159it rostlin\u00e1m lep\u0161\u00ed podm\u00ednky.<\/p>\n\n\n\n

Jak poznat pl\u00edse\u0148 na raj\u010datech?<\/h2>\n\n\n\n

Nej\u010dast\u011bj\u0161\u00edm probl\u00e9mem b\u00fdv\u00e1 pl\u00edse\u0148 bramborov\u00e1, zn\u00e1m\u00e1 tak\u00e9 jako fytoftorov\u00e1 pl\u00edse\u0148<\/strong>.<\/p>\n\n\n\n

Prvn\u00ed p\u0159\u00edznaky se mohou objevit na listech v podob\u011b nepravideln\u00fdch hn\u011bd\u00fdch a\u017e \u010dern\u00fdch skvrn. Za vlhk\u00e9ho po\u010das\u00ed se choroba m\u016f\u017ee \u0161\u00ed\u0159it velmi rychle.<\/p>\n\n\n\n

Napaden\u00e9 mohou b\u00fdt tak\u00e9 stonky a pozd\u011bji plody. Na raj\u010datech se mohou objevit tmav\u00e9, tvrd\u0161\u00ed skvrny, kter\u00e9 se postupn\u011b zv\u011bt\u0161uj\u00ed.<\/p>\n\n\n\n

Typick\u00e9 p\u0159\u00edznaky:<\/h3>\n\n\n\n
    \n
  • hn\u011bd\u00e9 nebo \u010dern\u00e9 skvrny na listech,<\/li>\n\n\n\n
  • rychl\u00e9 \u017eloutnut\u00ed a odum\u00edr\u00e1n\u00ed list\u016f,<\/li>\n\n\n\n
  • tmav\u00e9 skvrny na stonc\u00edch,<\/li>\n\n\n\n
  • hn\u011bd\u00e9 skvrny na plodech,<\/li>\n\n\n\n
  • rychl\u00e9 \u0161\u00ed\u0159en\u00ed po de\u0161tiv\u00e9m po\u010das\u00ed.<\/li>\n<\/ul>\n\n\n\n

    Co ud\u011blat okam\u017eit\u011b?<\/h2>\n\n\n\n

    Pokud objev\u00edte prvn\u00ed podez\u0159el\u00e9 skvrny, ne\u010dekejte n\u011bkolik dn\u00ed, zda samy zmiz\u00ed.<\/p>\n\n\n\n

    1. Odstra\u0148te siln\u011b napaden\u00e9 listy<\/h3>\n\n\n\n

    Napaden\u00e9 listy opatrn\u011b odst\u0159ihn\u011bte \u010dist\u00fdmi n\u016f\u017ekami.<\/p>\n\n\n\n

    Neodstra\u0148ujte v\u0161ak najednou velk\u00e9 mno\u017estv\u00ed zdrav\u00e9ho list\u00ed. Rostlina pot\u0159ebuje zdrav\u00e9 listy pro fotosynt\u00e9zu a tvorbu energie.<\/p>\n\n\n\n

    Po pr\u00e1ci je vhodn\u00e9 n\u00e1\u0159ad\u00ed o\u010distit, zejm\u00e9na pokud jste manipulovali s nemocn\u00fdmi \u010d\u00e1stmi rostlin.<\/p>\n\n\n\n

    2. Napaden\u00e9 plody odd\u011blte<\/h3>\n\n\n\n

    Raj\u010data s jasn\u00fdmi zn\u00e1mkami infekce je vhodn\u00e9 co nejd\u0159\u00edve odstranit.<\/p>\n\n\n\n

    Nenech\u00e1vejte nemocn\u00e9 plody le\u017eet pod rostlinami ani na z\u00e1honu.<\/p>\n\n\n\n

    Pokud je choroba siln\u011b roz\u0161\u00ed\u0159en\u00e1, je d\u016fle\u017eit\u00e9 zabr\u00e1nit dal\u0161\u00edmu \u0161\u00ed\u0159en\u00ed infek\u010dn\u00edho materi\u00e1lu.<\/p>\n\n\n\n

    3. Raj\u010data nezal\u00e9vejte p\u0159es listy<\/h2>\n\n\n\n

    Jedn\u00edm z nejd\u016fle\u017eit\u011bj\u0161\u00edch preventivn\u00edch opat\u0159en\u00ed je spr\u00e1vn\u00e1 z\u00e1livka.<\/p>\n\n\n\n

    Vodu aplikujte p\u0159\u00edmo ke ko\u0159en\u016fm a sna\u017ete se zbyte\u010dn\u011b nesm\u00e1\u010det listy.<\/p>\n\n\n\n

    Dlouhodob\u011b vlhk\u00e9 listy vytv\u00e1\u0159ej\u00ed p\u0159\u00edzniv\u011bj\u0161\u00ed podm\u00ednky pro \u0161\u00ed\u0159en\u00ed mnoha houbov\u00fdch a houb\u00e1m podobn\u00fdch chorob.<\/p>\n\n\n\n

    4. Zajist\u011bte co nejlep\u0161\u00ed proud\u011bn\u00ed vzduchu<\/h2>\n\n\n\n

    Hust\u011b rostouc\u00ed raj\u010data maj\u00ed mezi listy v\u00edce vlhkosti.<\/p>\n\n\n\n

    Pravideln\u011b kontrolujte rostliny a odstra\u0148ujte p\u0159edev\u0161\u00edm nemocn\u00e9, po\u0161kozen\u00e9 nebo listy, kter\u00e9 zbyte\u010dn\u011b le\u017e\u00ed na p\u016fd\u011b.<\/p>\n\n\n\n

    U raj\u010dat p\u011bstovan\u00fdch ve sklen\u00edku je velmi d\u016fle\u017eit\u00e9 pravideln\u00e9 v\u011btr\u00e1n\u00ed.<\/p>\n\n\n\n

    M\u016f\u017ee pomoci jedl\u00e1 soda?<\/h2>\n\n\n\n

    Jedl\u00e1 soda se \u010dasto objevuje mezi dom\u00e1c\u00edmi tipy proti houbov\u00fdm chorob\u00e1m.<\/p>\n\n\n\n

    Je v\u0161ak d\u016fle\u017eit\u00e9 si uv\u011bdomit, \u017ee dom\u00e1c\u00ed roztoky nejsou univerz\u00e1ln\u00ed l\u00e9\u010dbou a p\u0159i nespr\u00e1vn\u00e9 koncentraci mohou listy po\u0161kodit.<\/p>\n\n\n\n

    Pokud chcete pou\u017e\u00edt p\u0159\u00edpravek na ochranu rostlin, je bezpe\u010dn\u011bj\u0161\u00ed zvolit p\u0159\u00edpravek registrovan\u00fd pro danou plodinu a konkr\u00e9tn\u00ed chorobu<\/strong> a \u0159\u00eddit se jeho etiketou.<\/p>\n\n\n\n

    Co d\u011blat s raj\u010daty po de\u0161ti?<\/h2>\n\n\n\n

    Po del\u0161\u00edm de\u0161ti je vhodn\u00e9 rostliny pe\u010dliv\u011b prohl\u00e9dnout.<\/p>\n\n\n\n

    Zam\u011b\u0159te se zejm\u00e9na na:<\/p>\n\n\n\n

      \n
    • spodn\u00ed listy,<\/li>\n\n\n\n
    • stonky,<\/li>\n\n\n\n
    • m\u00edsta hust\u00e9ho porostu,<\/li>\n\n\n\n
    • plody le\u017e\u00edc\u00ed bl\u00edzko p\u016fdy.<\/li>\n<\/ul>\n\n\n\n

      Pr\u00e1v\u011b po vlhk\u00e9m obdob\u00ed se mohou prvn\u00ed p\u0159\u00edznaky objevit velmi rychle.<\/p>\n\n\n\n

      Nep\u0159eh\u00e1n\u011bjte to s odstra\u0148ov\u00e1n\u00edm list\u016f<\/h2>\n\n\n\n

      \u010castou chybou je snaha zachr\u00e1nit raj\u010data tak, \u017ee p\u011bstitel odstran\u00ed t\u00e9m\u011b\u0159 v\u0161echny listy.<\/p>\n\n\n\n

      To nen\u00ed vhodn\u00e9.<\/p>\n\n\n\n

      Zdrav\u00e9 listy jsou pro rostlinu velmi d\u016fle\u017eit\u00e9 a jejich nadm\u011brn\u00e9 odstran\u011bn\u00ed m\u016f\u017ee rostlinu oslabit. Odstra\u0148ujte p\u0159edev\u0161\u00edm skute\u010dn\u011b nemocn\u00e9 nebo siln\u011b po\u0161kozen\u00e9 \u010d\u00e1sti.<\/p>\n\n\n\n

      Jak zabr\u00e1nit pl\u00edsni na raj\u010datech?<\/h2>\n\n\n\n

      Prevence je \u010dasto \u00fa\u010dinn\u011bj\u0161\u00ed ne\u017e pozdn\u00ed z\u00e1sah.<\/p>\n\n\n\n

      Dodr\u017eujte n\u011bkolik z\u00e1kladn\u00edch pravidel:<\/p>\n\n\n\n

        \n
      • vysazujte raj\u010data s dostate\u010dn\u00fdmi rozestupy,<\/li>\n\n\n\n
      • zajist\u011bte proud\u011bn\u00ed vzduchu,<\/li>\n\n\n\n
      • zal\u00e9vejte ke ko\u0159en\u016fm,<\/li>\n\n\n\n
      • nesm\u00e1\u010dejte zbyte\u010dn\u011b listy,<\/li>\n\n\n\n
      • pravideln\u011b kontrolujte rostliny,<\/li>\n\n\n\n
      • odstra\u0148ujte nemocn\u00e9 \u010d\u00e1sti,<\/li>\n\n\n\n
      • ve sklen\u00edku pravideln\u011b v\u011btrejte,<\/li>\n\n\n\n
      • nep\u011bstujte raj\u010data dlouhodob\u011b v p\u0159\u00edli\u0161 vlhk\u00e9m prost\u0159ed\u00ed.<\/li>\n<\/ul>\n\n\n\n

        Pom\u00e1h\u00e1 st\u0159\u00edd\u00e1n\u00ed plodin?<\/h2>\n\n\n\n

        Ano, st\u0159\u00edd\u00e1n\u00ed plodin je d\u016fle\u017eitou sou\u010d\u00e1st\u00ed prevence.<\/p>\n\n\n\n

        Pokud se raj\u010data nebo brambory p\u011bstuj\u00ed opakovan\u011b na stejn\u00e9m m\u00edst\u011b, m\u016f\u017ee se zv\u00fd\u0161it riziko probl\u00e9m\u016f spojen\u00fdch s p\u016fdou a rostlinn\u00fdmi zbytky.<\/p>\n\n\n\n

        Pokud m\u00e1te mo\u017enost, pl\u00e1nujte p\u011bstov\u00e1n\u00ed tak, aby se stejn\u00e9 nebo p\u0159\u00edbuzn\u00e9 plodiny na jednom m\u00edst\u011b pravideln\u011b nest\u0159\u00eddaly bez p\u0159est\u00e1vky.<\/p>\n\n\n\n

        Co d\u011blat se siln\u011b napadenou rostlinou?<\/h2>\n\n\n\n

        Pokud je cel\u00e1 rostlina siln\u011b napadena a choroba se rychle \u0161\u00ed\u0159\u00ed, m\u016f\u017ee b\u00fdt nejrozumn\u011bj\u0161\u00ed ji odstranit, aby nep\u0159edstavovala dal\u0161\u00ed zdroj infekce pro okoln\u00ed rostliny.<\/p>\n\n\n\n

        P\u0159i likvidaci nemocn\u00fdch rostlin postupujte podle doporu\u010den\u00ed pro danou chorobu a ned\u00e1vejte siln\u011b napaden\u00fd materi\u00e1l bez rozmyslu na kompost.<\/p>\n\n\n\n

        Pozor: ne ka\u017ed\u00e1 skvrna znamen\u00e1 pl\u00edse\u0148<\/h2>\n\n\n\n

        Hn\u011bd\u00e9 nebo \u017elut\u00e9 skvrny mohou m\u00edt tak\u00e9 jin\u00e9 p\u0159\u00ed\u010diny.<\/p>\n\n\n\n

        Podobn\u00e9 p\u0159\u00edznaky mohou zp\u016fsobit nap\u0159\u00edklad:<\/p>\n\n\n\n

          \n
        • nedostatek n\u011bkter\u00fdch \u017eivin,<\/li>\n\n\n\n
        • nepravideln\u00e1 z\u00e1livka,<\/li>\n\n\n\n
        • slune\u010dn\u00ed \u00fapal,<\/li>\n\n\n\n
        • \u0161k\u016fdci,<\/li>\n\n\n\n
        • mechanick\u00e9 po\u0161kozen\u00ed,<\/li>\n\n\n\n
        • jin\u00e9 choroby.<\/li>\n<\/ul>\n\n\n\n

          Proto je d\u016fle\u017eit\u00e9 sledovat nejen jednu skvrnu, ale celkov\u00fd stav rostliny a rychlost \u0161\u00ed\u0159en\u00ed p\u0159\u00edznak\u016f.<\/p>\n\n\n\n

          Z\u00e1v\u011br<\/h2>\n\n\n\n

          Pl\u00edse\u0148 na raj\u010datech vy\u017eaduje rychlou reakci.<\/strong> Jakmile objev\u00edte podez\u0159el\u00e9 tmav\u00e9 skvrny, rostlinu d\u016fkladn\u011b prohl\u00e9dn\u011bte, odstra\u0148te siln\u011b napaden\u00e9 \u010d\u00e1sti a p\u0159edev\u0161\u00edm omezte dlouhodob\u00e9 sm\u00e1\u010den\u00ed list\u016f.<\/p>\n\n\n\n

          Spr\u00e1vn\u00e1 z\u00e1livka, dostate\u010dn\u00e9 rozestupy, dobr\u00e9 v\u011btr\u00e1n\u00ed a pravideln\u00e1 kontrola rostlin jsou z\u00e1kladn\u00edmi kroky, kter\u00e9 mohou pomoci udr\u017eet raj\u010data zdrav\u011bj\u0161\u00ed.<\/p>\n\n\n\n

          Ne\u010dekejte, a\u017e se probl\u00e9m roz\u0161\u00ed\u0159\u00ed na cel\u00fd z\u00e1hon. \u010c\u00edm d\u0159\u00edve prvn\u00ed p\u0159\u00edznaky odhal\u00edte, t\u00edm v\u011bt\u0161\u00ed je \u0161ance, \u017ee zachr\u00e1n\u00edte alespo\u0148 \u010d\u00e1st \u00farody raj\u010dat.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

          Pl\u00edse\u0148 na raj\u010datech pat\u0159\u00ed mezi nejv\u011bt\u0161\u00ed obavy ka\u017ed\u00e9ho p\u011bstitele. Sta\u010d\u00ed n\u011bkolik de\u0161tiv\u00fdch a vlhk\u00fdch dn\u016f a na listech, stonc\u00edch nebo plodech se mohou objevit prvn\u00ed tmav\u00e9 skvrny. Pokud zas\u00e1hnete v\u010das, […]<\/p>\n","protected":false},"author":2,"featured_media":1504,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-1503","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dvorek"],"_links":{"self":[{"href":"https:\/\/www.topcz.top\/index.php?rest_route=\/wp\/v2\/posts\/1503"}],"collection":[{"href":"https:\/\/www.topcz.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.topcz.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.topcz.top\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.topcz.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1503"}],"version-history":[{"count":1,"href":"https:\/\/www.topcz.top\/index.php?rest_route=\/wp\/v2\/posts\/1503\/revisions"}],"predecessor-version":[{"id":1505,"href":"https:\/\/www.topcz.top\/index.php?rest_route=\/wp\/v2\/posts\/1503\/revisions\/1505"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.topcz.top\/index.php?rest_route=\/wp\/v2\/media\/1504"}],"wp:attachment":[{"href":"https:\/\/www.topcz.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1503"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.topcz.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1503"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.topcz.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1503"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}