{"id":20149,"date":"2026-04-10T09:37:13","date_gmt":"2026-04-10T06:37:13","guid":{"rendered":"https:\/\/www.agroteka.lt\/?p=20149"},"modified":"2026-08-05T08:58:00","modified_gmt":"2026-08-05T05:58:00","slug":"jak-mulcovani-pomaha-pri-pestovani-repky","status":"publish","type":"post","link":"https:\/\/www.agroteka.lt\/cs\/kaip-mulciavimas-padeda-rapsu-auginime\/","title":{"rendered":"Jak mul\u010dov\u00e1n\u00ed pom\u00e1h\u00e1 p\u0159i p\u011bstov\u00e1n\u00ed \u0159epky?"},"content":{"rendered":"

\u0158epka je jednou z nejd\u016fle\u017eit\u011bj\u0161\u00edch plodin v osevn\u00edm postupu mnoha zem\u011bd\u011blsk\u00fdch podnik\u016f, z\u00e1rove\u0148 v\u0161ak pat\u0159\u00ed mezi ty nejn\u00e1ro\u010dn\u011bj\u0161\u00ed. Chcete-li dos\u00e1hnout stabiln\u00ed \u00farody, je nutn\u00e9 nejen zvolit vhodn\u00e9 p\u011bstitelsk\u00e9 technologie, ale tak\u00e9 porozum\u011bt proces\u016fm prob\u00edhaj\u00edc\u00edm v p\u016fd\u011b \u2013 od \u0161\u00ed\u0159en\u00ed chorob a\u017e po kolob\u011bh rostlinn\u00fdch zbytk\u016f a \u017eivin.<\/p>\n

V tomto \u010dl\u00e1nku se pod\u00edv\u00e1me na hlavn\u00ed v\u00fdzvy, kter\u00fdm \u010del\u00ed p\u011bstitel\u00e9 \u0159epky, a na to, jak je \u0159e\u0161it pomoc\u00ed mul\u010dov\u00e1n\u00ed. Budeme hovo\u0159it o probl\u00e9mu samovoln\u00e9ho v\u00fdsevu \u0159epky, riziku chorob, p\u0159\u00edprav\u011b p\u016fdy a p\u0159\u00ednosech mezip\u011bstov\u00e1n\u00ed. Jak to v\u0161e souvis\u00ed se strukturou p\u016fdy, tvorbou humusu a udr\u017eiteln\u011bj\u0161\u00edm zem\u011bd\u011blstv\u00edm?<\/p>\n<\/div><\/div>

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\"\"<\/a><\/div><\/div><\/div><\/div><\/div><\/section>

Znalosti nezbytn\u00e9 pro \u00fasp\u011b\u0161n\u00e9 p\u011bstov\u00e1n\u00ed \u0159epky<\/h4>\n<\/div><\/div>
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\u0158epka pat\u0159\u00ed do \u010deledi brukvovit\u00fdch a je d\u016fle\u017eitou sou\u010d\u00e1st\u00ed osevn\u00edho postupu mnoha zem\u011bd\u011blsk\u00fdch podnik\u016f, proto\u017ee jako p\u0159edplodina m\u016f\u017ee p\u0159in\u00e9st zna\u010dnou ekonomickou hodnotu. Tato plodina v\u0161ak nen\u00ed p\u0159\u00edli\u0161 odoln\u00e1 v\u016f\u010di opakovan\u00e9mu p\u011bstov\u00e1n\u00ed, a proto je obzvl\u00e1\u0161t\u011b n\u00e1chyln\u00e1 k chorob\u00e1m, jako je sklerotick\u00e1 hniloba nebo hniloba ko\u0159enov\u00e9ho kr\u010dku a stonku. Pokud nejsou p\u0159\u00ed\u010diny t\u011bchto chorob \u00fa\u010dinn\u011b potla\u010dov\u00e1ny, m\u016f\u017ee doj\u00edt k v\u00fdrazn\u00e9mu sn\u00ed\u017een\u00ed v\u00fdnosu.<\/p>\n<\/div><\/div>

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\u0160kody zp\u016fsoben\u00e9 star\u00fdm a samovoln\u011b vyrostl\u00fdm \u0159epkem<\/strong><\/p>\n

Pokud se jim nev\u011bnuje dostate\u010dn\u00e1 pozornost, m\u016f\u017ee se star\u00fd a samovoln\u011b rostouc\u00ed \u0159epka st\u00e1t v\u00e1\u017en\u00fdm probl\u00e9mem.<\/p>\n

Star\u00e9 \u0159epky napom\u00e1haj\u00ed \u0161\u00ed\u0159en\u00ed chorob a zkracuj\u00ed p\u0159est\u00e1vku v osevn\u00edm postupu. Samovoln\u011b vyrostl\u00e9 \u0159epky naopak zahu\u0161\u0165uj\u00ed porost a mohou v\u00fdrazn\u011b zhor\u0161it kvalitu sklizn\u011b.<\/p>\n

Ani za ide\u00e1ln\u00edch podm\u00ednek sklizn\u011b se nepoda\u0159\u00ed zcela zabr\u00e1nit ztr\u00e1t\u00e1m \u0159epky. Pokud se sklize\u0148 prov\u00e1d\u00ed p\u0159\u00edli\u0161 pozd\u011b nebo nastanou nep\u0159\u00edzniv\u00e9 pov\u011btrnostn\u00ed podm\u00ednky, nap\u0159\u00edklad bou\u0159e, mohou b\u00fdt tyto ztr\u00e1ty je\u0161t\u011b v\u011bt\u0161\u00ed.<\/p>\n

Z\u00e1v\u011br je jednoduch\u00fd: \u0159epka je n\u00e1ro\u010dn\u00e1 plodina, kter\u00e1 s sebou p\u0159in\u00e1\u0161\u00ed \u0159adu v\u00fdzev, kter\u00e9 je nutn\u00e9 n\u00e1le\u017eit\u011b zvl\u00e1dnout.<\/p>\n<\/div><\/div><\/div><\/div>

\"Mul\u010dova\u010de<\/a><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section>

Naru\u0161en\u00ed stavu klidu<\/strong><\/p>\n

Po zaset\u00ed p\u0159ech\u00e1zej\u00ed semena \u0159epky do po\u010d\u00e1te\u010dn\u00edho stavu klidu. K podn\u00edcen\u00ed jejich kl\u00ed\u010den\u00ed je nutn\u00e9 zajistit vhodn\u00e9 podm\u00ednky.<\/p>\n

Semena \u0159epky kl\u00ed\u010d\u00ed nejl\u00e9pe, kdy\u017e se nach\u00e1zej\u00ed bl\u00edzko povrchu p\u016fdy a nejsou zaseta p\u0159\u00edli\u0161 hluboko. Pokud jsou semena zaseta p\u0159\u00edli\u0161 hluboko, p\u0159ejdou do sekund\u00e1rn\u00edho stavu klidu. V takov\u00e9m p\u0159\u00edpad\u011b vykl\u00ed\u010d\u00ed podstatn\u011b pozd\u011bji a v n\u00e1sleduj\u00edc\u00edch porostech se objev\u00ed jako ne\u017e\u00e1douc\u00ed samovoln\u011b vyrostl\u00fd \u0159epek.<\/p>\n

Semena \u0159epky, kter\u00e1 se nach\u00e1zej\u00ed velmi hluboko v p\u016fd\u011b, mohou z\u016fstat \u017eivotaschopn\u00e1 a\u017e 10 let.<\/p>\n<\/div><\/div>

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Co m\u016f\u017eete ud\u011blat? Mul\u010dov\u00e1n\u00ed!<\/strong><\/p>\n

Mul\u010dova\u010d sb\u00edr\u00e1 semena le\u017e\u00edc\u00ed na povrchu, rozdrcuje rostlinn\u00e9 zbytky a p\u0159itla\u010duje je k p\u016fd\u011b. Jeliko\u017e mul\u010dov\u00e1n\u00ed neporu\u0161uje p\u016fdu, semena nejsou zapracov\u00e1na p\u0159\u00edli\u0161 hluboko \u2013 t\u00edm se zabr\u00e1n\u00ed vzniku sekund\u00e1rn\u00edho klidu.<\/p>\n

Dal\u0161\u00ed v\u00fdhoda: mul\u010dova\u010d roz\u0159\u00edzne je\u0161t\u011b nezral\u00e9 lusky, tak\u017ee semena v nich obsa\u017een\u00e1 mohou \u00fasp\u011b\u0161n\u011b vykl\u00ed\u010dit pod vrstvou mul\u010de.<\/p>\n<\/div><\/div>

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Sklerotinia, fom\u00f3za a dal\u0161\u00ed houbov\u00e9 choroby<\/strong><\/p>\n

Bohu\u017eel \u0159epka nen\u00ed p\u0159\u00edli\u0161 odoln\u00e1 v\u016f\u010di houbov\u00fdm chorob\u00e1m. V p\u016fd\u011b mohou p\u0159etrv\u00e1vat ztvrdl\u00e9 struktury houby \u2013 sklerocie, kter\u00e9 z\u016fst\u00e1vaj\u00ed \u017eivotaschopn\u00e9 a\u017e 10 let a po dlouhou dobu p\u0159edstavuj\u00ed hrozbu pro porosty \u0159epky. A\u010dkoli se k boji proti t\u011bmto chorob\u00e1m pou\u017e\u00edvaj\u00ed fungicidy, jejich aplikace vyvol\u00e1v\u00e1 mnoho diskus\u00ed ohledn\u011b dopadu na v\u010dely a \u017eivotn\u00ed prost\u0159ed\u00ed.<\/p>\n<\/div><\/div>

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Mul\u010dova\u010d pom\u00e1h\u00e1 p\u0159irozen\u011b sni\u017eovat riziko chorob houbov\u00e9ho p\u016fvodu.<\/strong><\/p>\n

Mul\u010dov\u00e1n\u00ed rozdrt\u00ed rostlinn\u00e9 zbytky a urychl\u00ed proces jejich rozkladu. Rozdrt\u00ed se tak\u00e9 stonky \u0159epky, \u010d\u00edm\u017e se vytvo\u0159\u00ed podm\u00ednky pro to, aby se k sclerotii dostaly v\u011bt\u0161\u00ed p\u016fdn\u00ed mikroorganismy a rozlo\u017eily je.<\/p>\n<\/div><\/div>

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P\u0159\u00edprava p\u016fdy<\/strong><\/p>\n

Mul\u010dov\u00e1n\u00ed p\u0159in\u00e1\u0161\u00ed v\u00fdhody i p\u0159i p\u0159\u00edprav\u011b p\u016fdy pro nov\u00fd v\u00fdsev po sklizni \u0159epky. Po intenzivn\u00edm rozdrcen\u00ed rostlinn\u00fdch zbytk\u016f ji\u017e nep\u0159edstavuj\u00ed \u017e\u00e1dn\u00fd probl\u00e9m: neucp\u00e1vaj\u00ed zem\u011bd\u011blsk\u00e9 stroje a nebr\u00e1n\u00ed kvalitn\u00edmu zapracov\u00e1n\u00ed osiva.<\/p>\n

\u0158epka vytv\u00e1\u0159\u00ed po celou dobu vegeta\u010dn\u00edho obdob\u00ed dobrou strukturu p\u016fdy, kter\u00e1 nen\u00ed mul\u010dov\u00e1n\u00edm naru\u0161ena. D\u00edky tomu je po mul\u010dov\u00e1n\u00ed mo\u017en\u00e9 prov\u00e9st opakovan\u00e9 or\u00e1n\u00ed a velmi m\u011blk\u00e9 zpracov\u00e1n\u00ed p\u016fdy je mo\u017en\u00e9 i bez pou\u017eit\u00ed glyfos\u00e1tu.<\/p>\n<\/div><\/div>

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\"Pevn\u00fd<\/a><\/div><\/div><\/div><\/div><\/div><\/section>

Pro\u010d se po sklizni \u0159epky vyplat\u00ed mul\u010dovat?<\/h4>\n<\/div><\/div>
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Zbytky \u0159epky mohou v n\u00e1sleduj\u00edc\u00edch porostech p\u0159edstavovat v\u00e1\u017en\u00fd probl\u00e9m. Proto je po sklizni d\u016fle\u017eit\u00e9 vytvo\u0159it co nejp\u0159\u00edzniv\u011bj\u0161\u00ed podm\u00ednky pro kl\u00ed\u010den\u00ed zbytk\u016f semen \u0159epky.<\/p>\n

P\u0159i pou\u017eit\u00ed mul\u010dova\u010de M\u00fcthing z\u016fst\u00e1vaj\u00ed drobn\u00e1 semena bl\u00edzko povrchu p\u016fdy a jsou chr\u00e1n\u011bna vrstvou mul\u010de. To vede k v\u00fdrazn\u011b vy\u0161\u0161\u00ed kl\u00ed\u010divosti rozsypan\u00fdch semen \u0159epky ve srovn\u00e1n\u00ed s m\u011blk\u00fdm sek\u00e1n\u00edm strni\u0161t\u011b.<\/p>\n