Yleinen maaperätesti mittaa peltojen kuivatusojiin kertyvää perintöfosforia

23.10.2021 | Uudistava viljely Tieteellinen artikkeli

Artikkelin otsikko: A common agricultural soil test can identify legacy P hotspots in a drainage ditch network

Tekijät: Mattila, Tuomas & Ezzati, Golnaz

Tiedejournaali: Journal of Environmental Management

Vuosi: 2021

Perintöfosforilla tarkoitetaan maahan kertyneitä fosforivarantoja, jotka ylittävät maan fosforinpidätyskyvyn. Tällöin fosfori on alttiina huuhtoutumiselle. Yleisesti käytetyllä Mehlich-3 -maaperätestillä voidaan mitata fosforin saturaatiota eli kyllääntymistä ja perintöfosforin määrää. Tässä tutkimuksessa analysoitiin aikaisemmin julkaistua maanäyteaineistoa, joka oli kerätty peltojen kuivatusojien piennarten sedimenteistä. Tutkimuksen mukaan kustannustehokas Mehlich-3 maaperätesti on toimiva työkalu fosforin huuhtoutumiselle alttiiden alueiden paikantamiseksi ojaverkostossa.

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Yleinen maaperätesti mittaa peltojen kuivatusojiin kertyvää perintöfosforia

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