Inde, mosiyana ndi momwe zimamvekera, udzu ukhoza kudwala ndi matenda
Kodi Brown Patch ndi Chiyani?
Chigamba cha Brown chimayambitsidwa ndi mitundu ya bowa yomwe imatchedwa Rhizoctonia. Zimakhudza udzu wonse wa msipu koma zimakhala zovulaza kwambiri kwa ryegrass ndi wamtali. Kentucky bluegrass ndi zophika zabwino nthawi zina zimatha kuchitidwa koma zowonongeka nthawi zambiri zimakhala zochepa. Chigamba cha Brown chimakhudza mitundu yosiyanasiyana ya udzu wa nyengo, kuphatikizapo St. Augustinegrass ndi Zosiagrass.
Ndi matenda a foliar, kutanthauza kuti amavulaza udzu koma osati korona wa chomera kapena mizu.
Kodi zizindikiro za Brown Patch ndi ziti?
Chigamba cha Brown chimaoneka ngati nsalu zozungulira pamadontho omwe ali a brownish chikasu ndipo amakhala oposa 6 masentimita mpaka mamita awiri. Masamba okhudzidwa nthawi zambiri amakhalabe owongoka, ndipo zotupa zimatha kuwona masamba omwe ali obiriwira komanso osasinthasintha ndi malire ofiira. White, kanyumba, mycelium amapezeka pamphepete mwa mame kumayambiriro kwa m'mawa. Chigamba cha Brown chili chodziŵika chifukwa ndi chosiyana ndi "kusuta" komwe nthawi zina kumawonekera kumbali yakunja ndipo ndi mawonekedwe a "frog-eye" ngati udzu wapakati ukupangitsa kuti malowo ayang'ane.
Kodi Chigamba cha Brown Chimachitika Bwanji?
Mbalame ya Brown imatha kupezeka nthawi yotentha ndi chinyezi pamene kutentha kwa usiku kumakhala pamwamba pa 68 ° F. Kuwonjezera pa kutentha ndi chinyezi, zifukwa zazikulu zomwe zimayambitsa bulauni ndi azitrogeni komanso ulimi wothirira, kusowa kwa kayendetsedwe ka mpweya, osauka ngalande ya nthaka , zowonjezera kwambiri, ndi dothi lophwanyidwa.
Mwa kuyankhula kwina, udzu wokhazikika komanso wosasungidwa bwino.
Kodi Brown Patch Imayendetsedwa Bwanji?
Njira yabwino yothetsera vutolo la bulauni ndiyo kupeŵa izo pokhala pazinthu zowonongeka. Osapitirira -manyowa, gwiritsani ntchito njira zowitsirira moyenera, mchere wambiri ndi kuwononga kamodzi kanthawi ndipo yesetsani kupereka kayendedwe kokwanira ka mpweya kudera lonse.
Kulamulira bulauni yofiira kumatha kupyolera mwa mankhwala ambiri a fungicides. Poganizira za fungicides, ndi bwino kuthana ndi kampani yosamalira udzu omwe ali ndi mankhwala ophera tizilombo omwe ali ndi antchito omwe amaphunzitsidwa bwino kuti apeze matenda ndi udzu .
Palibenso zambiri zomwe zingachite ponena za nyengo koma samalani kwambiri kuti musapitirire madzi kapena kutentha nthawi zambiri kutentha ndi chinyezi, komanso kutentha kwa nthawi ya usiku. Si ntchito yovuta yomwe ndikudziwa, koma chifukwa chake kusamalira udzu sikumangokhala ngati pulogalamu yazinayi. Zimaphatikizapo nthawi, kuleza mtima, kudalira, mwayi, ndi kugwira ntchito mwakhama.