{"id":2850,"date":"2025-04-03T06:44:46","date_gmt":"2025-04-03T06:44:46","guid":{"rendered":"https:\/\/paul-tech.com\/?p=2850"},"modified":"2026-03-12T14:38:16","modified_gmt":"2026-03-12T14:38:16","slug":"mineraalvaetiste-efektiivne-kasutamine","status":"publish","type":"post","link":"https:\/\/paul-tech.com\/et\/mineraalvaetiste-efektiivne-kasutamine\/","title":{"rendered":"Mineraalv\u00e4etiste efektiivne kasutamine"},"content":{"rendered":"<div class=\"wp-block-post-date\"><time datetime=\"2025-04-03T06:44:46+00:00\">April 3, 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\" class=\"wp-block-social-link-anchor\"><svg width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" aria-hidden=\"true\" 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class=\"wp-social-link wp-social-link-youtube  wp-block-social-link\"><a rel=\"noopener nofollow\" target=\"_blank\" href=\"https:\/\/www.youtube.com\/@paul-tech_esoil\" class=\"wp-block-social-link-anchor\"><svg width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M21.8,8.001c0,0-0.195-1.378-0.795-1.985c-0.76-0.797-1.613-0.801-2.004-0.847c-2.799-0.202-6.997-0.202-6.997-0.202 h-0.009c0,0-4.198,0-6.997,0.202C4.608,5.216,3.756,5.22,2.995,6.016C2.395,6.623,2.2,8.001,2.2,8.001S2,9.62,2,11.238v1.517 c0,1.618,0.2,3.237,0.2,3.237s0.195,1.378,0.795,1.985c0.761,0.797,1.76,0.771,2.205,0.855c1.6,0.153,6.8,0.201,6.8,0.201 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-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"481\" src=\"https:\/\/paul-tech.com\/wp-content\/uploads\/2025\/04\/image-1024x481.png\" alt=\"\" class=\"wp-image-2851\" srcset=\"https:\/\/paul-tech.com\/wp-content\/uploads\/2025\/04\/image-1024x481.png 1024w, https:\/\/paul-tech.com\/wp-content\/uploads\/2025\/04\/image-300x141.png 300w, https:\/\/paul-tech.com\/wp-content\/uploads\/2025\/04\/image-768x361.png 768w, https:\/\/paul-tech.com\/wp-content\/uploads\/2025\/04\/image.png 1377w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Efektiivne mineraalv\u00e4etiste kasutamine on kaasaegse p\u00f5llumajanduse \u00fcks v\u00f5tmek\u00fcsimusi, eriti kevadiste p\u00f5uaperioodide tingimustes. Paul-Techi mullaandurite kogutud andmed ja viimaste aastate ilmastikuolud n\u00e4itavad, et varakevadine sademete v\u00e4hesus m\u00f5jutab otseselt taimede toitumist ning v\u00e4etiste omastamist. Kui mullas pole piisavalt niiskust, ei p\u00e4\u00e4se antud toitained taimede juurestikku \u00f5igel ajal ning nende m\u00f5ju saagikusele v\u00f5ib j\u00e4\u00e4da tagasihoidlikuks v\u00f5i olla koguni kahjulik.<\/p>\n\n\n\n<p>Viimaste aastate andmed kinnitavad, et kevadine p\u00f5ud on p\u00f5llumeeste jaoks muutunud tavap\u00e4raseks probleemiks. 2023. aastal kestis see mitmel pool juuni l\u00f5puni, 2024. aastal mai l\u00f5puni. See on taimede intensiivse toiteelementide omastamise periood. Taimekasvu alguses on k\u00fcll talvest j\u00e4\u00e4nud mullavee varu, ent hiljem muld kuivab ja puuduvad sademed, mis viiksid toitaineid juurte piirkonda. Ka Ilmateenistuse andmetel on paljuaastate keskmiselt k\u00f5ige sademete vaesemad kuud vegetatsiooniperioodil aprill (34 mm) ja mai (42 mm). Selline olukord viib p\u00f5llumehe m\u00f5ttele jaotatud v\u00e4etamise efektiivsuse kohta, sest sademete puudumisel ei saa p\u00f5llule antud toitained liikuda taimede juurte juurde. Hilisemad sademed aga teevad toitained k\u00e4ttesaadavaks ajal, mil see vajalik ei ole ja saaki kahjustab.<\/p>\n\n\n\n<p>Joonisel 1. on n\u00e4ha talinisu 2022\/23 p\u00f5ldu, kus k\u00f5ik toitained, l\u00e4mmastikku 160 kg\/ha, anti taimekasvuperioodi alguses korraga p\u00f5llule. Mullaandurid asusid leetjas gleimullas, keskmises liivsavi l\u00f5imises, 8 ja 25 cm s\u00fcgavusel.<\/p>\n\n\n\n<p>V\u00e4etised k\u00fclvati p\u00f5llule 20. aprilliks, mil taimekasv oli juba alanud. Niiske ja sooja mulla t\u00f5ttu said toitained koheselt lahustuma hakata, et taimekasvule tuge pakkuda. Aprilli l\u00f5pus tulnud sademed aga viisid toitained juba s\u00fcgavamale mulda. 8 cm s\u00fcgavuses mullakihis t\u00f5usis toitainete tase v\u00e4ga k\u00f5rgele, ent 25 cm s\u00fcgavusele toitaineid ei kantud. Edasi toimus toitainete intensiivne tarbimine mai l\u00f5puni, vaatamata sademete puudumisele. Sademed, mis m\u00f5jutasid 8 cm s\u00fcgavust mullakihti tulid alles jaanip\u00e4eva paiku. 25 cm s\u00fcgavusele j\u00f5udis vesi alles juuni viimasel p\u00e4eval. Juuli alguse tugevad sademed aga ei toonud enam kaasa toitainete kasvu, mis viitab, et lisatud toitained olid selleks ajaks \u00e4ra tarvitatud. Hilisv\u00f5rseid ei saanud tekkida ja saagiks kujunes, vaatamata p\u00f5uasele juunile, 8 t\/ha.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXcwZgzk6wyhmgyiPfvSE7G560nb7bXiKttTaqFBflZTTh3LmXMALRglqxmxMmwKlNXxxLUJclWmWx4murIgT7Mrb1iuCfUmCP1JHtpielq7QAcmLtYY7_LpYHg43hzu9DxCAdp0ZNxFKLnzupWrIbQ?key=fcafnsCwk-3WLIOfJWALrQgC\" alt=\"Pilt, millel on kujutatud tekst, Font, j\u00e4rjekord, number\n\nTehisintellekti genereeritud sisu v\u00f5ib olla ebat\u00f5ene.\"\/><figcaption class=\"wp-element-caption\"><em><strong>Joonis 1.<\/strong> V\u00e4etised antud praktiliselt korraga, talinisu 2022\/23.<\/em><\/figcaption><\/figure>\n\n\n\n<p>Joonisel 2. on n\u00e4ha talinisu 2022\/23 jaotatult v\u00e4etamist. Mullaandurid asusid gleistunud leetjas mullas, kerges liivsavi l\u00f5imises, 8 ja 20 cm s\u00fcgavusel.<\/p>\n\n\n\n<p>Esimene kevadine v\u00e4etamine, l\u00e4mmastikku 89 kg\/ha, tehti 14. aprillil, mil taimik oli alustanud kasvamist. V\u00e4etis sai niiskesse mulda ja lahustumise tingimused olid head. Aprilli l\u00f5pu vihm t\u00f5i lahustunud toitained esile ja v\u00f5imaldas taimedel neid intensiivselt tarbida. Ent toitaineid jagus ainult 5. maini.<\/p>\n\n\n\n<p>Teine v\u00e4etamine, l\u00e4mmastikku 67 kg\/ha, tehti 17. mail, mil ilmaennustus lubas vihma. Vihm j\u00e4i aga tagasihoidlikuks, v\u00e4etusaine 8 cm s\u00fcgavusele ei j\u00f5udnud ja p\u00f5ud kestis edasi p\u00f6\u00f6rip\u00e4evani. 22. juunil tulnud vihm t\u00f5stis toitainete taseme 8 cm s\u00fcgavusel v\u00e4ga k\u00f5rgele, andes m\u00e4rku, et teise ringi v\u00e4etis on eelnevalt tarbimata. 5. juuliks j\u00f5udsid toitained koos veega ka 20 cm s\u00fcgavusse kihti, kuhu nad olid pestud \u00fclemisest kihist. Toitaineid oli k\u00fclluslikult, et moodustada hilisv\u00f5rseid. Saaki saadi 4,5 t\/ha.<\/p>\n\n\n\n<p>V\u00e4etist kulus kummaski variandis pea \u00fchepalju, ent saak kujunes jaotatud andmisel 3,5 t\/ha v\u00e4iksemaks. Teise ringi v\u00e4etis m\u00e4ngis p\u00f5ua t\u00f5ttu saagi kujunemisel negatiivset rolli \u2013 ei t\u00f5stnud saaki, tekitas vaid hulgaliselt hilisv\u00f5rseid. Jaotatud v\u00e4etamisel j\u00e4i taimede toitumisel kasutamata k\u00fcmne p\u00e4eva pikkune periood enne teist v\u00e4etamist, mil mullas oli veel produktiivset vett ent puudusid toitained.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh7-rt.googleusercontent.com\/docsz\/AD_4nXdTRAbOtEgb_ExRtkVRxjZfqg9GiqdYrzlp5J0CKKPX_y7sU-UrMaNhM659v0Nj-i1jeUB19Rw2KCCy-HkkagvCRKaqDx8zRiti8CVX-SMvl0lr8_VsVc4XglhSeh7Q95MjVLgNA8mwjOjVioBfrfg?key=fcafnsCwk-3WLIOfJWALrQgC\" alt=\"Pilt, millel on kujutatud tekst, Font, j\u00e4rjekord, number\n\nTehisintellekti genereeritud sisu v\u00f5ib olla ebat\u00f5ene.\"\/><figcaption class=\"wp-element-caption\"><em><strong>Joonis 2.<\/strong> Jaotatult v\u00e4etamine, talinisu 2022\/23.<\/em><\/figcaption><\/figure>\n\n\n\n<p>Sama probleemi on lahanud enam kui 40 aastat tagasi p\u00f5llumajandusteadlased agrokeemikud A. Sirendi ja E. Raudv\u00e4li, mil nad mineraalv\u00e4etiste kasutamist k\u00e4sitlevates artiklites kirjutasid j\u00e4rgmist:<\/p>\n\n\n\n<p>&#8220;V\u00e4etiste andmine piirkonda, kus nad on taimedele halvasti v\u00f5i hilinemisega k\u00e4ttesaadavad, on sisuliselt v\u00e4etiste eba\u00f6konoomne kasutamine. V\u00e4etiste andmisega mulla pealmisse 0\u20265 cm kihti h\u00e4iritakse kuiva kevade puhul taimede normaalset toitere\u017eiimi, toiteelementide intensiivse omastamise perioodil (juunikuu) aga on mulla pealmine kiht sageli l\u00e4bikuivanud, osmootse r\u00f5hu erinevuse ning vee kapillaarse t\u00f5usu t\u00f5ttu mulla pinnal on v\u00e4etusainete kontsentratsioon toksiliselt k\u00f5rge, taimejuurte s\u00fcgavuses aga liig madal. Hilisemad vihmad viivad k\u00fcll v\u00e4etusained s\u00fcgavamale, kuid toitainete omastamise hilinemisest tekib hilisv\u00f5rseid, raskendub koristamine ja v\u00e4etiste efektiivsus on langenud.<\/p>\n\n\n\n<p>Muld on puhverduss\u00fcsteemiks k\u00f5igi mulda sattuvate \u00fchendite suhtes. Puhverdusv\u00f5ime avaldub mulla bioloogilise aktiivsuse ja f\u00fc\u00fcsikalis-keemilise neeldumise kaudu. Kaalium- ja ammooniumioon fikseeritakse mullas savimineraalide poolt. T\u00e4nu sellele v\u00f5ib \u00fchekorraga anda mulda taimedele kogu kasvuperioodi vajaduse l\u00e4mmastikku ja kaaliumi<\/p>\n\n\n\n<p>L\u00e4mmastikv\u00e4etiste varakevadine kasutamine enne vegetatsiooni-perioodi algust pole mitte millegagi p\u00f5hjendatud. Paljudel juhtudel on varakevadel k\u00fclmunud maale antav l\u00e4mmastik j\u00e4ljetult kadunud, nagu poleks seda antudki. L\u00e4mmastiku sellise kadumise p\u00f5hjus on teoreetiliselt t\u00e4iesti seletatav. Nimelt toimub varakevadel madalal temperatuuril dissimilatiivne denitrifikatsioon, j\u00e4rgneva skeemi kohaselt:<\/p>\n\n\n\n<p>2NO<sub>3<\/sub>\u2192 2N0<sub>2<\/sub> \u21922(HNO) \u2192H2N<sub>2<\/sub>O<sub>2<\/sub> \u2192 N<sub>2<\/sub>O\u2191 ja N<sub>2<\/sub>\u2191<\/p>\n\n\n\n<p>Temperatuuril \u00fcle +7 \u00b0C domineerivad assimilatiivsed denitrifikatsiooniprotsessid, mille l\u00f5pp-produkt NH<sub>3<\/sub> seotakse mulla poolt. Sellest v\u00f5ime teha praktilise j\u00e4relduse: L\u00e4mmastikv\u00e4etised k\u00fclvame suviviljadele k\u00fclvieelse mullaharimise alla, taliviljadele ja heintaimedele aga p\u00e4rast vegetatsiooni algust, mil mulla niiskusre\u017eiim v\u00f5imaldab kamarat v\u00f5i orast kahjustamata l\u00e4mmastikv\u00e4etist k\u00fclvata. Sel ajal anname teraviljadele kogu l\u00e4mmastikunormi, heintaimedele aga vaid esimeseks niiteks vajaliku.<\/p>\n\n\n\n<p>L\u00e4mmastikv\u00e4etiste jaotatud andmine teraviljadele terasaaki enamasti ei suurenda. M\u00f5ningal m\u00e4\u00e4ral v\u00f5ib terades suureneda vaid l\u00e4mmastiku\u00fchendite sisaldus. K\u00fcll v\u00f5ib aga hilisem l\u00e4mmastikv\u00e4etiste andmine k\u00f5rsumisel v\u00f5i loomisel p\u00f5hjustada hilisv\u00f5rsete teket, mis halvendab saagi koristamist. Hilisem l\u00e4mmastikv\u00e4etiste andmine on \u00f5igustatud juhul, kui \u00f5igeaegselt ei olnud seda k\u00fcllaldases koguses v\u00f5imalik anda. Siis on otstarbekas anda ta juurev\u00e4liselt koos keemilise umbrohut\u00f5rjega.\u201c<\/p>\n\n\n\n<p class=\"has-medium-font-size\"><strong>Kasutatud kirjandus<\/strong><\/p>\n\n\n\n<p class=\"has-small-font-size\"><em>Sirendi, A., Raudv\u00e4li, E.1983, Mineraalv\u00e4etiste kadudest. Tallinn, 16 lk<\/em>.<\/p>\n\n\n\n<p class=\"has-small-font-size\"><em>Sirendi, A. 1983, Mineraalv\u00e4etiste Kasutamise agro\u00f6koloogilisi kriteeriume. Teaduse saavutusi ja eesrindlikke kogemusi p\u00f5llumajanduses 31\/1983. Tallinn, lk. 31-36.<\/em><\/p>\n\n\n\n<p class=\"has-small-font-size\"><em>Raudv\u00e4li, E., Sirendi, A. 1983, L\u00e4mmastiktoitumise aktuaalseid k\u00fcsimusi. Teaduse saavutusi ja eesrindlikke kogemusi p\u00f5llumajanduses 31\/1983. Tallinn, lk. 36-43.<\/em><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Efektiivne mineraalv\u00e4etiste kasutamine on kaasaegse p\u00f5llumajanduse \u00fcks v\u00f5tmek\u00fcsimusi, eriti kevadiste p\u00f5uaperioodide tingimustes. Paul-Techi mullaandurite kogutud andmed ja viimaste aastate ilmastikuolud&#8230;<\/p>\n","protected":false},"author":3,"featured_media":2851,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-2850","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized-et"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Mineraalv\u00e4etiste efektiivne kasutamine<\/title>\n<meta name=\"description\" content=\"Mineraalv\u00e4etiste kasutamine kevadp\u00f5uaga on keeruline. 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