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Agricultural and Food Science
Article . 1973 . Peer-reviewed
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Agricultural and Food Science
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Agricultural and Food Science
Article . 1973
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Agricultural and Food Science
Article . 1973
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Journal.fi
Article . 1973 . Peer-reviewed
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https://dx.doi.org/10.23986/af...
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NPK-lannoituksen vaikutus Pito-perunan satotekijöihin

descriptionPublicationkeyboard_double_arrow_right Article 01 Dec 1973 Finland Publisher:Agricultural and Food ScienceJournal:Agricultural and Food Science, volume 45, pages 489-500 (issn: 1459-6067, eissn: 1795-1895, Copyright policy )
Authors: Varis, Eero;

doi: 10.23986/afsci.72956

NPK-lannoituksen vaikutus Pito-perunan satotekijöihin

Abstract

Tässä tutkimuksessa pyrittiin selvittämään NPK-lannoituksen vaikutustapaa Pito-perunan sadonmuodostukseen. Typpilannoitus lisäsi voimakkaasti perunan varsiston kasvua, mutta mukulasatoa ainoastaan käytettyyn N1-määrään, 100kg N/ha saakka. Myös juuriston paino kasvoi typpilannoitusta lisättäessä. Typpilannoitus hidasti mukulasadon kehitystä sekä lisäsi versojen ja mukuloiden lukumäärää. Sekä isojen että myös pienten mukuloiden osuudet muuttuivat osittain typpilannoitusta lisättäessä. Fosforilannoitus lisäsi sekä varsiston painoa että mukulasatoa suurimpaan käytettyyn määrään, 168kg P/ha, saakka. Fosforilannoitus lisäsi mukuloiden lukumäärää sekä nopeutti mukuloiden lisäkasvua. Kalilannoitus ei vaikuttanut satoon. Ainoastaan versojen määrä lisääntyi hiukan kalilannoitusta lisättäessä. Typellä ja fosforilla todettiin yhdysvaikutus usean ominaisuuden suhteen. Useimmissa tapauksissa saatiin edullisin tulos sopivalla NP-suhteella, mikä tässä tutkimuksessa oli N1P1 tai N2P2.

Country
Finland
Related Organizations
Keywords

330, S, Agriculture (General), Agriculture, satoisuus, kalilannoitus, peruna, NPK-lannoitus, lannoitus, typpilannoitus, fosforilannoitus, 630, S1-972, Ka

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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