{"id":1260,"date":"2014-03-20T15:52:00","date_gmt":"2014-03-20T15:52:00","guid":{"rendered":"http:\/\/www.horticum.is\/?p=1260"},"modified":"2014-05-22T18:09:21","modified_gmt":"2014-05-22T18:09:21","slug":"vatnspokar-fyrir-trjagro%c3%b0ur","status":"publish","type":"post","link":"https:\/\/horticum.is\/?p=1260","title":{"rendered":"Vatnspokar fyrir trj\u00e1gr\u00f3\u00f0ur"},"content":{"rendered":"

Vatnspokar v\u00f6kva betur<\/h2>\n

Greinarh\u00f6fundur Horticum var \u00e1 fer\u00f0 um Kaupmannah\u00f6fn og rakst \u00fear \u00e1 undarlegt fyrirb\u00e6ri, \u00fe.e. vatnspoka sem settir eru undir stakst\u00e6\u00f0 tr\u00e9 til a\u00f0 h\u00e1marka v\u00f6kvun.<\/p>\n

Eitt helsta vandam\u00e1l vi\u00f0 r\u00e6ktun borgartrj\u00e1a, t.d. g\u00f6tutrj\u00e1a sem hafa yfirleitt l\u00edti\u00f0 r\u00f3tarr\u00fdmi er takmarka\u00f0 a\u00f0gengi a\u00f0 vatni. R\u00f3tarkerfi trj\u00e1gr\u00f3\u00f0urs sker\u00f0ist yfirleitt \u00feegar hann er tekin upp \u00ed gar\u00f0pl\u00f6ntust\u00f6\u00f0 og fluttur \u00e1 \u00fatpl\u00f6ntunarsta\u00f0. Nau\u00f0synlegt jafnv\u00e6gi \u00e1 milli trj\u00e1greina (kr\u00f3nu) og r\u00f3tarkerfis ri\u00f0last. \u00deetta veldur gjarnan \u00fev\u00ed a\u00f0 greinar, brum og bl\u00f6\u00f0 trj\u00e1gr\u00f3\u00f0urs \u00feorna upp og jafnvel drepast. \u00dev\u00ed er afar mikilv\u00e6gt a\u00f0 stakst\u00e6\u00f0 tr\u00e9 \u00ed skertu r\u00f3tarr\u00fdmi f\u00e1 g\u00f3\u00f0a og reglulega v\u00f6kvun, s\u00e9rstaklega fyrstu fimm \u00e1rin eftir \u00fatpl\u00f6ntun. V\u00ed\u00f0a eiga rekstrara\u00f0ilar gr\u00e6nna sv\u00e6\u00f0a \u00ed erfi\u00f0leikum me\u00f0 a\u00f0 sinna v\u00f6kvun trj\u00e1gr\u00f3\u00f0urs, m.a. \u00fear sem \u00fea\u00f0 er seinlegt og a\u00f0gengi a\u00f0 vatni er v\u00ed\u00f0a takmarka\u00f0. \u00dear koma vatnspokarnir a\u00f0 g\u00f3\u00f0um notum. Pokunum er komi\u00f0 fyrir vi\u00f0 stofn trj\u00e1nna, yfirleitt eru tveir pokar festir sitthvoru megin vi\u00f0 stofninn. Hver poki tekur um 75 l af vatni og er \u00fatb\u00fainn me\u00f0 sm\u00e1um g\u00f6tum \u00ed botninum sem veldur \u00fev\u00ed a\u00f0 vatni\u00f0 rennur \u00fat \u00ed jar\u00f0veginn \u00e1 9-12 klst. Me\u00f0 \u00fev\u00ed a\u00f0 mi\u00f0la vatninu \u00feetta h\u00e6gt til r\u00f3tanna helst\"IMG_2154\"<\/a>jar\u00f0vegurinn h\u00e6filega rakur, ekki of blautur. Einnig er tryggt a\u00f0 vatni\u00f0 berist h\u00e6filega dj\u00fapt ni\u00f0ur \u00ed jar\u00f0veginn sem veldur \u00fev\u00ed a\u00f0 tr\u00e9\u00f0 myndar dj\u00fapst\u00e6tt r\u00f3tarkerfi. \u00cd marshefti fagt\u00edmaritsins Gr\u00f6nt Milj\u00f6 fjalla\u00f0 um vatnspokana og birtar ni\u00f0urst\u00f6\u00f0ur ranns\u00f3knar sem Kaupmannahafnarkomm\u00fana \u00e1samt Skov og landskab st\u00f3\u00f0u fyrir \u00e1 \u00e1runum 2009-2010. \u00dear var borin saman hef\u00f0bundin v\u00f6kvun, framkv\u00e6md me\u00f0 vatnssl\u00f6ngu og v\u00f6kvun me\u00f0 pokum. Rannsaka\u00f0ar voru fj\u00f3rar trj\u00e1tegundir og m\u00e6ldur \u00feykktarv\u00f6xtur stofns. \u00cd \u00f6llum tilfellum var \u00feykktarv\u00f6xtur meiri \u00fear sem vatnspokarnir voru nota\u00f0ir. Jafnframt var vatnsn\u00fdting betri og v\u00f6kvunin flj\u00f3tlegri og markvissari.<\/p>\n

M\u00f6gulegir \u00f3kostir vi\u00f0 notkun vatnspoka eru m.a. \u00fatlitslegir, \u00fear sem teljast seint til pr\u00fd\u00f0i fyrir umhverfi\u00f0. Einnig kemur fram \u00ed \u00e1\u00f0urnefndri grein Gr\u00f6nt Milj\u00f6 a\u00f0 g\u00f6tin geti st\u00edflast \u00ed botni pokans og einnig geta \u00feeir veri\u00f0 freistandi f\u00f3rnarl\u00f6mb \u00feeirra sem haldnir eru skemmdarf\u00edkn.<\/p>\n

Spennandi ver\u00f0ur a\u00f0 fylgjast me\u00f0 hvort rekstrara\u00f0ilar gr\u00e6nna sv\u00e6\u00f0a \u00e1 \u00cdslandi n\u00e1i a\u00f0 tileinka s\u00e9r \u00feessa n\u00fdju a\u00f0fer\u00f0 \u00ed r\u00e6ktun borgartrj\u00e1a.<\/p>\n","protected":false},"excerpt":{"rendered":"

Vatnspokar v\u00f6kva betur Greinarh\u00f6fundur Horticum var \u00e1 fer\u00f0 um Kaupmannah\u00f6fn og rakst \u00fear \u00e1 undarlegt fyrirb\u00e6ri, \u00fe.e. vatnspoka sem settir eru undir stakst\u00e6\u00f0 tr\u00e9 til a\u00f0 h\u00e1marka v\u00f6kvun. Eitt helsta vandam\u00e1l vi\u00f0 r\u00e6ktun borgartrj\u00e1a, t.d. g\u00f6tutrj\u00e1a sem hafa yfirleitt l\u00edti\u00f0 r\u00f3tarr\u00fdmi er takmarka\u00f0 a\u00f0gengi a\u00f0 vatni. R\u00f3tarkerfi trj\u00e1gr\u00f3\u00f0urs sker\u00f0ist yfirleitt \u00feegar hann er tekin upp […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1,24],"tags":[31,55],"_links":{"self":[{"href":"https:\/\/horticum.is\/index.php?rest_route=\/wp\/v2\/posts\/1260"}],"collection":[{"href":"https:\/\/horticum.is\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/horticum.is\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/horticum.is\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/horticum.is\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1260"}],"version-history":[{"count":9,"href":"https:\/\/horticum.is\/index.php?rest_route=\/wp\/v2\/posts\/1260\/revisions"}],"predecessor-version":[{"id":1835,"href":"https:\/\/horticum.is\/index.php?rest_route=\/wp\/v2\/posts\/1260\/revisions\/1835"}],"wp:attachment":[{"href":"https:\/\/horticum.is\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1260"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/horticum.is\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1260"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/horticum.is\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1260"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}