{"id":553,"date":"2022-01-17T14:09:49","date_gmt":"2022-01-17T13:09:49","guid":{"rendered":"https:\/\/promenabydleni.cz\/?p=553"},"modified":"2022-01-17T16:37:58","modified_gmt":"2022-01-17T15:37:58","slug":"jak-proti-chorobam-a-skudcum-okurek","status":"publish","type":"post","link":"https:\/\/promenabydleni.cz\/?p=553","title":{"rendered":"Jak zv\u00edt\u011bzit proti chorob\u00e1m a \u0161k\u016fdc\u016fm okurek"},"content":{"rendered":"\n

Okurky p\u011bstujeme nejen na voln\u00fdch z\u00e1honech, ale velmi \u010dasto i ve sklen\u00edc\u00edch a f\u00f3liovn\u00edc\u00edch. To jsou ale dv\u011b velmi rozd\u00edln\u00e1 prost\u0159ed\u00ed co do teploty, vlhkosti i pohybu vzduchu, na co\u017e tak\u00e9 velmi rozd\u00edln\u011b reaguj\u00ed nemoci i \u0161k\u016fdci okurek.<\/p>\n\n\n\n

Jak proti chorob\u00e1m a \u0161k\u016fdc\u016fm okurek
Jeliko\u017e v\u011bt\u0161inou je pro jejich rozvoj optim\u00e1ln\u00ed sklen\u00edkov\u00e9 prost\u0159ed\u00ed, tak i my mus\u00edme b\u00fdt pozorn\u011bj\u0161\u00ed zejm\u00e9na v preventivn\u00edch, p\u0159edev\u0161\u00edm hygienick\u00fdch opat\u0159en\u00edch pr\u00e1v\u011b v t\u011bchto kryt\u00fdch p\u011bstitelsk\u00fdch prostor\u00e1ch, abychom, jak se \u0159\u00edk\u00e1, \u201enenahr\u00e1vali \u0161k\u016fdc\u016fm do karet\u201c. I p\u0159es tyto probl\u00e9my jsme v\u0161ak zejm\u00e9na v klimaticky chladn\u011bj\u0161\u00edch oblastech vysloven\u011b odk\u00e1z\u00e1ni na tyto kryt\u00e9 p\u011bstitelsk\u00e9 prostory, tak\u017ee se s probl\u00e9my mus\u00edme popasovat, podobn\u011b jako i p\u0159i zimn\u00edm rychlen\u00ed okurek v teplej\u0161\u00edch oblastech.<\/p>\n\n\n\n

Projevuje se nejprve sv\u011btle zelen\u00fdmi a\u017e \u017elutozelen\u00fdmi skvrnami ohrani\u010den\u00fdmi \u017eilkami na vrchn\u00ed stran\u011b pln\u011b vyvinut\u00fdch, star\u0161\u00edch list\u016f. Po de\u0161ti a za vlhk\u00e9ho po\u010das\u00ed je v\u011bt\u0161inou r\u00e1no mo\u017en\u00e9 pozorovat na spodn\u00ed stran\u011b list\u016f tmav\u011b \u0161ed\u00fd a\u017e \u010dern\u00fd povlak reproduk\u010dn\u00edch org\u00e1n\u016f pl\u00edsn\u011b. Po\u010det skvrn se postupn\u011b zv\u011bt\u0161uje, rozr\u016fstaj\u00ed se a spl\u00fdvaj\u00ed a\u017e nakonec zasychaj\u00ed a nekrotick\u00e9 pletivo vypad\u00e1v\u00e1. Siln\u011b napaden\u00e9 rostliny usychaj\u00ed a hynou. Je jednou z nejob\u00e1van\u011bj\u0161\u00edch chorob okurek.<\/p>\n\n\n\n

Biologick\u00e1 ochrana p\u0159i pl\u00edsni okurkov\u00e9
K mo\u0159en\u00ed osiva a sadby, p\u0159\u00edpadn\u011b z\u00e1livku v\u00fdsev\u016f a preventivn\u00ed post\u0159iky okurek zvy\u0161uj\u00edc\u00ed odolnost rostlin proti houbov\u00fdm chorob\u00e1m m\u016f\u017eeme pou\u017e\u00edt biop\u0159\u00edpravek Polyversum; v prvn\u00ed polovin\u011b vegetace m\u016f\u017eeme zv\u00fd\u0161it odolnost okurek proti pl\u00edsni post\u0159ikem biop\u0159\u00edpravku z mo\u0159sk\u00fdch \u0159as a rostlinn\u00fdch aminokyselin zvan\u00fdm Alginure; listov\u00e9 hnojivo z pomeran\u010dov\u00e9ho oleje s borem Prev \u2013 B2 se zase vyu\u017e\u00edv\u00e1 ke zlep\u0161en\u00ed vitality a omezen\u00ed napaden\u00ed rostlin houbami, hmyzem i rozto\u010di, a to post\u0159ikem od stadia 3 \u2013 5 list\u016f nebo od 2 \u2013 3 t\u00fddn\u016f po v\u00fdsadb\u011b sazenic.<\/p>\n\n\n\n

Klasick\u00e1 ochrana
Pokud jsou ve druh\u00e9 polovin\u011b kv\u011btna vydatn\u00e9 sr\u00e1\u017eky, tak na za\u010d\u00e1tku \u010dervna m\u016f\u017eeme prov\u00e9st preventivn\u00ed post\u0159ik, kter\u00fd opakujeme v 5-10denn\u00edch intervalech; pou\u017e\u00edt m\u016f\u017eeme kontaktn\u00ed m\u011b\u010fnat\u00e9 p\u0159\u00edpravky s \u010dekac\u00ed dobou 3 dny (u sal\u00e1tov\u00fdch okurek) a 7 dn\u00ed povolen\u00e9 v ekologick\u00e9m p\u011bstov\u00e1n\u00ed, jako jsou Champion 50 VG v koncentraci 0,2 % nebo Kuprikol 50 v koncentraci 0,4 %; bu\u010f preventivn\u011b, nebo p\u0159i prvn\u00edch p\u0159\u00edznac\u00edch nemoci m\u016f\u017eeme pou\u017e\u00edt i klasick\u00e9 syst\u00e9mov\u00e9 p\u0159\u00edpravky s 3denn\u00ed \u010dekac\u00ed dobou, jako jsou Previcur Energy v koncentraci 0,25 % nebo Infinito SC v koncentraci 0,12 \u2013 0,16 %. Uveden\u00e9 p\u0159\u00edpravky jsou deklarov\u00e1ny jako ne\u0161kodn\u00e9 pro v\u010dely.<\/p>\n\n\n\n

Ob\u011b nemoci pat\u0159\u00ed mezi nej\u010dast\u011bj\u0161\u00ed okurkov\u00e9 choroby; u poln\u00edch okurek se vyskytuj\u00ed a\u017e ve druh\u00e9 polovin\u011b \u010dervence, rychlen\u00e9 okurky ve sklen\u00edc\u00edch v\u0161ak ohro\u017euj\u00ed cel\u00fd rok. P\u0159ezimuj\u00ed ve form\u011b podhoub\u00ed \u010di plodni\u010dek na rostlinn\u00fdch zbytc\u00edch a napadaj\u00ed v\u0161echny nadzemn\u00ed \u010d\u00e1sti okurek, nej\u010dast\u011bji listy, kde vytv\u00e1\u0159ej\u00ed nejprve b\u00edl\u00e9 mou\u010dnat\u00e9 skvrny, kter\u00e9 pak spl\u00fdvaj\u00ed v b\u00edl\u00e9 povlaky. Napaden\u00e9 \u010d\u00e1sti rostou pomaleji, \u017eloutnou, usychaj\u00ed a hynou i cel\u00e9 rostliny.<\/p>\n\n\n\n

\u0160\u00ed\u0159en\u00ed choroby umo\u017e\u0148uj\u00ed m\u00e1lo odoln\u00e9 odr\u016fdy a podporuje ji n\u00edzk\u00e1 nebo kol\u00edsav\u00e1 vlhkost vzduchu, vy\u0161\u0161\u00ed teploty nad 22 \u00b0 C, rychl\u00fd r\u016fst zp\u016fsoben\u00fd nadbytkem dus\u00edku v p\u016fd\u011b, nedostatek sv\u011btla p\u0159i p\u011bstov\u00e1n\u00ed ve st\u00ednu \u010di v p\u0159ehu\u0161t\u011bn\u00fdch porostech a \u0161patn\u00e1 hygiena v sad\u011b. Ve sklen\u00edc\u00edch, pa\u0159eni\u0161t\u00edch je d\u016fle\u017eit\u00e1 likvidace rostlinn\u00fdch zbytk\u016f a dezinfekce prostor i p\u0159epa\u0159en\u00ed p\u016fdy a st\u0159\u00edd\u00e1n\u00ed s netekvicovit\u00fdmi plodinami. Ve sklen\u00edc\u00edch bychom m\u011bli zabr\u00e1nit poklesu vzdu\u0161n\u00e9 vlhkosti.<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

Bioochrana proti padl\u00ed
Mo\u017en\u00e9 je zv\u00fd\u0161en\u00ed odolnosti biop\u0159\u00edpravky jako u pl\u00edsn\u011b okurkov\u00e9.<\/p>\n\n\n\n

Klasick\u00e1 ochrana
Porosty poln\u00edch okurek o\u0161et\u0159\u00edme p\u0159i zji\u0161t\u011bn\u00ed prvn\u00edch p\u0159\u00edznak\u016f nemoci, jinak za\u010d\u00edn\u00e1me okurky preventivn\u011b o\u0161et\u0159ovat ve druh\u00e9 polovin\u011b \u010dervence a pot\u00e9 v 7-10denn\u00edch intervalech podle pot\u0159eby. V rychl\u00edrn\u00e1ch o\u0161et\u0159ujeme okurky od vytvo\u0159en\u00ed jejich des\u00e1t\u00e9ho prav\u00e9ho listu. Pou\u017e\u00edv\u00e1me p\u0159\u00edpravky povolen\u00e9 tak\u00e9 pro ekologick\u00e9 p\u011bstov\u00e1n\u00ed na b\u00e1zi s\u00edry, kontaktn\u00ed, ne\u0161kodn\u00e9 pro v\u010dely as \u010dekac\u00ed lh\u016ftou 3 dny, jako jsou Kumulus WG v koncentraci 0,2 \u2013 0,3 % a Thiovit Jet ve stejn\u00e9 koncentraci.<\/p>\n\n\n\n

Bakteri\u00e1ln\u00ed skvrnitost okurek (Pseudomonas syringae)
Je charakteristick\u00e1 hranat\u00fdmi skvrnami a\u017e d\u00edrami na listech a na jejich spodku se vyskytuj\u00ed kapky bakteri\u00e1ln\u00edho slizu, kter\u00e9 za sucha vytv\u00e1\u0159ej\u00ed b\u00edl\u00fd povlak. Nemoc deformuje i plody. Rozvoj nemoci zejm\u00e9na u poln\u00edch okurek podporuje de\u0161tiv\u00e9 po\u010das\u00ed, vy\u0161\u0161\u00ed teploty ve dne a chladn\u00e9 noci.<\/p>\n\n\n\n

Ochrana
Maxim\u00e1ln\u00ed hygiena porost\u016f a m\u011b\u010fnat\u00e9 post\u0159iky uveden\u00e9 u pl\u00edsn\u011b okurkov\u00e9.<\/p>\n","protected":false},"excerpt":{"rendered":"

Okurky p\u011bstujeme nejen na voln\u00fdch z\u00e1honech, ale velmi \u010dasto i ve sklen\u00edc\u00edch a f\u00f3liovn\u00edc\u00edch. To jsou ale dv\u011b velmi rozd\u00edln\u00e1 prost\u0159ed\u00ed co do teploty, vlhkosti i pohybu vzduchu, na co\u017e tak\u00e9 velmi rozd\u00edln\u011b reaguj\u00ed nemoci i \u0161k\u016fdci okurek. Jak proti chorob\u00e1m a \u0161k\u016fdc\u016fm okurekJeliko\u017e v\u011bt\u0161inou je pro jejich rozvoj optim\u00e1ln\u00ed sklen\u00edkov\u00e9 prost\u0159ed\u00ed, tak i my […]<\/p>\n","protected":false},"author":1,"featured_media":554,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","tdm_status":"","tdm_grid_status":"","footnotes":""},"categories":[18],"tags":[],"class_list":["post-553","post","type-post","status-publish","format-standard","has-post-thumbnail","category-zahrada"],"amp_enabled":false,"_links":{"self":[{"href":"https:\/\/promenabydleni.cz\/index.php?rest_route=\/wp\/v2\/posts\/553","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/promenabydleni.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/promenabydleni.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/promenabydleni.cz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/promenabydleni.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=553"}],"version-history":[{"count":2,"href":"https:\/\/promenabydleni.cz\/index.php?rest_route=\/wp\/v2\/posts\/553\/revisions"}],"predecessor-version":[{"id":557,"href":"https:\/\/promenabydleni.cz\/index.php?rest_route=\/wp\/v2\/posts\/553\/revisions\/557"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/promenabydleni.cz\/index.php?rest_route=\/wp\/v2\/media\/554"}],"wp:attachment":[{"href":"https:\/\/promenabydleni.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=553"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/promenabydleni.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=553"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/promenabydleni.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=553"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}