{"id":4045,"date":"2025-09-16T06:05:43","date_gmt":"2025-09-16T06:05:43","guid":{"rendered":"https:\/\/paul-tech.com\/?p=4045"},"modified":"2026-03-12T15:39:27","modified_gmt":"2026-03-12T15:39:27","slug":"miksi-maan-kosteuden-mittaus-antaa-enemman-tietoa-kuin-sademaaran-seuraaminen","status":"publish","type":"post","link":"https:\/\/paul-tech.com\/fi\/miksi-maan-kosteuden-mittaus-antaa-enemman-tietoa-kuin-sademaaran-seuraaminen\/","title":{"rendered":"Miksi maan kosteuden mittaus antaa enemm\u00e4n tietoa kuin sadem\u00e4\u00e4r\u00e4n seuraaminen?"},"content":{"rendered":"<div class=\"wp-block-post-date\"><time datetime=\"2025-09-16T06:05:43+00:00\">September 16, 2025<\/time><\/div>\n\n\n<ul class=\"wp-block-social-links is-layout-flex wp-block-social-links-is-layout-flex\"><li class=\"wp-social-link wp-social-link-facebook  wp-block-social-link\"><a rel=\"noopener nofollow\" target=\"_blank\" href=\"https:\/\/www.facebook.com\/PaulTechEstonia\" 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s4.203-0.006,7.001-0.209c0.391-0.047,1.243-0.051,2.004-0.847c0.6-0.607,0.795-1.985,0.795-1.985s0.2-1.618,0.2-3.237v-1.517 C22,9.62,21.8,8.001,21.8,8.001z M9.935,14.594l-0.001-5.62l5.404,2.82L9.935,14.594z\"><\/path><\/svg><span class=\"wp-block-social-link-label screen-reader-text\">YouTube<\/span><\/a><\/li>\n\n<li class=\"wp-social-link wp-social-link-tiktok  wp-block-social-link\"><a rel=\"noopener nofollow\" target=\"_blank\" href=\"https:\/\/www.tiktok.com\/@paultech_soil\" class=\"wp-block-social-link-anchor\"><svg width=\"24\" height=\"24\" viewBox=\"0 0 32 32\" version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M16.708 0.027c1.745-0.027 3.48-0.011 5.213-0.027 0.105 2.041 0.839 4.12 2.333 5.563 1.491 1.479 3.6 2.156 5.652 2.385v5.369c-1.923-0.063-3.855-0.463-5.6-1.291-0.76-0.344-1.468-0.787-2.161-1.24-0.009 3.896 0.016 7.787-0.025 11.667-0.104 1.864-0.719 3.719-1.803 5.255-1.744 2.557-4.771 4.224-7.88 4.276-1.907 0.109-3.812-0.411-5.437-1.369-2.693-1.588-4.588-4.495-4.864-7.615-0.032-0.667-0.043-1.333-0.016-1.984 0.24-2.537 1.495-4.964 3.443-6.615 2.208-1.923 5.301-2.839 8.197-2.297 0.027 1.975-0.052 3.948-0.052 5.923-1.323-0.428-2.869-0.308-4.025 0.495-0.844 0.547-1.485 1.385-1.819 2.333-0.276 0.676-0.197 1.427-0.181 2.145 0.317 2.188 2.421 4.027 4.667 3.828 1.489-0.016 2.916-0.88 3.692-2.145 0.251-0.443 0.532-0.896 0.547-1.417 0.131-2.385 0.079-4.76 0.095-7.145 0.011-5.375-0.016-10.735 0.025-16.093z\" \/><\/svg><span class=\"wp-block-social-link-label screen-reader-text\">TikTok<\/span><\/a><\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/paul-tech.com\/wp-content\/uploads\/2025\/09\/IMG_3045-1-2-e1757936274313.jpg\" alt=\"\" class=\"wp-image-4037\"\/><\/figure>\n\n\n\n<p>Useimmat viljelij\u00e4t ovat tottuneet seuraamaan ennen kaikkea sadem\u00e4\u00e4r\u00e4\u00e4 \u2013 jos vett\u00e4 tulee paljon, ajatellaan helposti, ett\u00e4 pellolla riitt\u00e4\u00e4 kosteutta, ja jos sateita on v\u00e4h\u00e4n, olosuhteita pidet\u00e4\u00e4n heti kuivina. Todellisuudessa sademittarin lukema ei kuitenkaan kerro, kuinka paljon vett\u00e4 kasvien juuret todella maasta saavat. T\u00e4ss\u00e4 kohtaa maan kosteuden mittaus astuu kuvaan: se n\u00e4ytt\u00e4\u00e4 tarkemmin, onko juuristokerroksessa riitt\u00e4v\u00e4sti vett\u00e4.<\/p>\n\n\n\n<p>Viljelyss\u00e4 maan kosteus on t\u00e4rke\u00e4mpi tieto kuin sadem\u00e4\u00e4r\u00e4, sill\u00e4 se heijastaa suoraan kasveille k\u00e4ytt\u00f6kelpoisen veden m\u00e4\u00e4r\u00e4\u00e4. Maan kosteuden mittaus ottaa huomioon my\u00f6s maalajin, orgaanisen aineksen m\u00e4\u00e4r\u00e4n ja maan rakenteen \u2013 kaikki tekij\u00f6it\u00e4, jotka vaikuttavat vedenpid\u00e4tyskykyyn. Sadem\u00e4\u00e4r\u00e4 kertoo vain, kuinka paljon vett\u00e4 on satanut pellolle, mutta ei sit\u00e4, kuinka paljon siit\u00e4 on imeytynyt maahan ja kuinka pitk\u00e4\u00e4n vesi siell\u00e4 s\u00e4ilyy.<\/p>\n\n\n\n<p>Pelkk\u00e4 sademittari ei huomioi monia kasvien vedensaantiin vaikuttavia tekij\u00f6it\u00e4. Lis\u00e4ksi maan kosteus vaikuttaa viljelyt\u00f6iden toteuttamiseen ja niiden laatuun.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Esimerkkej\u00e4, miksi maan kosteus kertoo enemm\u00e4n kuin sadem\u00e4\u00e4r\u00e4:<\/strong><\/h3>\n\n\n\n<p><strong>Maalaji ja rakenne:<\/strong> Eri maalajit pid\u00e4tt\u00e4v\u00e4t vett\u00e4 eri tavoin. Hiekkamaa l\u00e4p\u00e4isee veden nopeasti, kun taas savimaa s\u00e4ilytt\u00e4\u00e4 kosteutta pidemp\u00e4\u00e4n. Sademittari ei kerro, imeytyyk\u00f6 vesi peltoon vai valuu pois, kantavatko pellot koneita tai onko rakenne muokkaukselle sopiva.<\/p>\n\n\n\n<p><strong>Kasveille k\u00e4ytt\u00f6kelpoinen vesi:<\/strong> Kaikki maassa oleva vesi ei ole kasvien juurille saatavilla. Maan kosteuden mittaus kertoo juuri sen osan vedest\u00e4, jonka kasvit voivat hy\u00f6dynt\u00e4\u00e4.<\/p>\n\n\n\n<p><strong>Haihtuminen:<\/strong> Sateen j\u00e4lkeen osa vedest\u00e4 voi haihtua nopeasti, etenkin kuumalla ja tuulisella s\u00e4\u00e4ll\u00e4. Maan kosteuden mittaus huomioi my\u00f6s t\u00e4m\u00e4n vesih\u00e4vi\u00f6n.<\/p>\n\n\n\n<p><strong>Kastelutarve:<\/strong> Sadem\u00e4\u00e4r\u00e4 ei kerro, tarvitsevatko kasvit lis\u00e4kastelua. Lyhyt, voimakas sade voi nostaa mittarin lukeman korkeaksi, vaikka vesi ei ehtisi imeyty\u00e4 syv\u00e4lle juuristoon asti. Maan kosteuden mittaus antaa reaaliaikaisen tiedon siit\u00e4, onko maassa tarpeeksi kosteutta.<br><\/p>\n\n\n\n<p>Vaikka sade on veden l\u00e4hde, maan kosteuden mittaus antaa paljon tarkemman ja k\u00e4yt\u00e4nn\u00f6llisemm\u00e4n kuvan kasvien todellisesta vedensaannista ja pellon kunnosta. T\u00e4m\u00e4 on kriittisen t\u00e4rke\u00e4\u00e4 peltot\u00f6iden suunnittelussa. Kun k\u00e4yt\u00f6ss\u00e4 on suora indikaattori kasvuun vaikuttavasta kosteudesta, riskit voidaan arvioida paremmin ja viljely\u00e4 hallita tehokkaammin.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Maan kosteuden seuranta on t\u00e4rke\u00e4\u00e4 kylv\u00f6jen, lannoitusten, kasvinsuojelun ja muiden peltot\u00f6iden oikeassa ajoituksessa. N\u00e4in voidaan v\u00e4ltt\u00e4\u00e4 kasvien k\u00e4rsiminen joko kuivuudesta tai liiasta kosteudesta.<\/strong><strong><br><\/strong><\/li>\n\n\n\n<li><strong>Kosteusanturit antavat suoraa tietoa siit\u00e4, milloin kastella, milloin v\u00e4ltt\u00e4\u00e4 liiallista lannoitusta tai pellolla liikkumista.<\/strong><strong><br><\/strong><\/li>\n\n\n\n<li><strong>Maan kosteus on keskeisin tekij\u00e4, joka ratkaisee sadon m\u00e4\u00e4r\u00e4n \u2013 sill\u00e4 juuri maasta kasvien juuret ottavat tarvitsemansa veden.<\/strong><\/li>\n<\/ul>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Useimmat viljelij\u00e4t ovat tottuneet seuraamaan ennen kaikkea sadem\u00e4\u00e4r\u00e4\u00e4 \u2013 jos vett\u00e4 tulee paljon, ajatellaan helposti, ett\u00e4 pellolla riitt\u00e4\u00e4 kosteutta, ja&#8230;<\/p>\n","protected":false},"author":3,"featured_media":4037,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[5],"tags":[],"class_list":["post-4045","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized-fi"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Miksi maan kosteuden mittaus antaa enemm\u00e4n tietoa kuin sadem\u00e4\u00e4r\u00e4n seuraaminen? 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