Kalkitusvaikutus eli peltomaan pH:n nousu varmistaa, että arvokkaat ravinteet ovat kasvien saatavilla. Tämän lisäksi Soilfoodin Rakennekalkkien ja Tehokalkkien mukana peltoon lisätään merkittävä määrä kasveille käyttökelpoista fosforia – kaupan päälle.
Soilfoodin kiertotalouskalkeista Rakennekalkit ja Tehokalkit sisältävät liukoista fosforia, joka on välittömästi kasveille käyttökelpoisessa muodossa. Tämä fosfori ei silti ole vesiliukoista eli huuhtoutumisherkkää. Tiedot kävivät ilmi Soilfoodin T&K:n ulkopuolisella, riippumattomalla taholla teettämistä uuttotutkimuksista (2021).
Soilfoodin Rakenne- ja Tehokalkkien mukana kaupan päälle saatava fosforilannoitus on viljelijälle edullista. Esimerkkilaskelmat perustuvat tilanteeseen, jossa runsasmultaisen hiesusavimaan pH:ta nostetaan yhdellä viljavuusluokalla pH:sta 6 tavoitetasoon 6,4.
Yhden viljavuusluokan nostoon tarvitaan Soilfood Rakennekalkkia 4,2 t/ha, jonka mukana peltoon lisätään 14.28 kg välittömästi kasveille käyttökelpoista fosforia.
Kalkituksen mukana saatavan fosforilannoituksen arvo on noin 35,7 €/ha.*
Yhden viljavuusluokan nostoon tarvitaan Soilfood Tehokalkkia 4,1 t/ha, jonka mukana peltoon lisätään 17,6 kg välittömästi kasveille käyttökelpoista fosforia.
Kalkituksen mukana saatavan fosforilannoituksen arvo on noin 44 €/ha.*
* Hinta-arvio perustuu tavanomaiseen viljelyyn myytävän fosforin arvioituun markkinahintaan 2,5 €/kg.
Soilfoodin tuoteselosteissa on kerrottu tuotteista kokonaisfosforin ja liukoisen fosforin määrät. Liukoisen fosforin määrä kuvaa välittömästi kasvien käytössä olevan fosforin määrää. Kokonaisfosforin ja liukoisen fosforin erotuksesta puolestaan valtaosa vapautuu kasvien käyttöön hitaammin joko saman tai seuraavien vuosien aikana. Muutama prosentti kokonaisfosforista on jäännösfosforia, joka ei ole lainkaan kasvien käytettävissä.
Kalkkien liukoinen fosfori ei ole lainkaan vesiliukoista eli huuhtoutumisherkkää. Siitä huolimatta on kalkituksen suunnittelussa huomioitava huuhtoumien ehkäiseminen: esimerkiksi talvella ei kannata kalkita lohkoja, joilta kalkki voi kokonaisuudessaan huuhtoutua vesistöön valumien tai tulvien vuoksi.
Oikein valittu kalkki on tärkeä investointi, joka parantaa pellon tuottavuutta. Kalkituksella vaikutetaan maan rakenteeseen ja happamuuteen, mikä on kasvukunnon ja viljelyn kannattavuuden edellytys. Laske oman peltosi kalkkitarve kalkkilaskurilla ja vertaa tuotteita.
Kokeile kalkkilaskuria
Soilfoodin laajassa kalkkivalikoimassa on tehokalkkien ja rakennekalkkien lisäksi ravinnepitoisia kalkkeja sekä maanparannuskalkkeja.
Tutustu tuotevalikoimaanHuomaathan, että suostumuksesi on voimassa kaikilla aliverkkotunnuksillamme. Voit muuttaa suostumustasi tai peruuttaa sen milloin tahansa napsauttamalla "Evästeasetukset"-painiketta näyttösi alaosasta. Kunnioitamme valintojasi ja olemme sitoutuneet tarjoamaan sinulle läpinäkyvän ja turvallisen selauskokemuksen.
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