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Punase ristiku kasvatamise mõju mulla üldlämmastiku sisaldusele erinevates viljelusviisides

Kuht, Jaan; Eremeev, Viacheslav; Talgre, Liina and Alaru, Maarika (2020) Punase ristiku kasvatamise mõju mulla üldlämmastiku sisaldusele erinevates viljelusviisides. [The effect of the cultivation of red clover on the content of total nitrogen in different farming systems.] Agronoomia, 2020, pp. 70-75.

[thumbnail of Kuht et al 2020.pdf] PDF - Published Version - Estonian/Eesti


Maheviljelussüsteemide (Mahe I ja Mahe II) mullas olid üldlämmastiku sisalduse näitajad võrreldes tavaviljeluse süsteemiga Tava I odra alla külvatud ristiku järgselt vastavalt 17,4% ja 18,5%, ristiku järgselt 10,6% ja 17,1% ning talinisu järgselt 14,3% ja 13,5% võrra suuremad. Samas usutav erinevus kasvatatud kultuuride vahel puudus. Tava 0 mullas olid üldlämmastiku sisalduse näitajad ristiku allakülviga odra järgselt 24,0%, ristiku järgselt 10,6% ja talinisu järgselt 14,8% võrra väiksemad kui Mahe 0 süsteemis. Ristiku kasvatamine tõstis Tava 0 ala Nüld sisaldust, kuid ilmnes tendents, kus pärast talinisu kasvatamist hakkab mullas üldlämmastiku sisaldus jälle vähenema.

Summary translation

The experiments were carried out during 2014–2018. There were 5 crops in rotation: red clover, winter wheat, pea, potato and barley undersown (us) with red clover. There were 5 cultivation systems in the experimental setup: 2 conventional systems with chemical plant protection and mineral fertilizers; 3 organic systems which included winter cover crops and farm manure. The aim of the present research was to study the effect of cultivating red clover on the soil total nitrogen (Ntot) content. The cultivation of red clover had a positive effect on the Ntot content in both farmng systems. The content of total nitrogen in the soil of organic systems was higher (18.5% after barley undersown with red clover, 17.1% after red clover, 14.3% after winter wheat), compared to the conventional systems with mineral fertilizers and plant protection. Comparing the unfertilized organic and conventional plots it was observed that the soil where pesticides (incl glyphosates) were used, the content of total soil nitrogen (Ntot) was lower by 10.6–24.0%, compared to the organic treatments with no pesticides.

EPrint Type:Journal paper
Keywords:cropping systems, organic farming, winter wheat, red clover, soil total nitrogen (Ntot)
Agrovoc keywords:
cropping systems
organic farming -> organic agriculture
winter wheat
Red clover -> Trifolium pratense
soil nutrient content -> soil fertility
Subjects: Crop husbandry > Crop combinations and interactions
Soil > Nutrient turnover
Research affiliation: Estonia > Estonian University of Life Sciences
European Union > CORE Organic > CORE Organic Plus > FertilCrop
Horizon Europe or H2020 Grant Agreement Number:618107
Related Links:http://pk.emu.ee/userfiles/instituudid/pk/file/PKI/agronoomia/Agronoomia_2020_veebi.pdf?fbclid=IwAR3nsObHFEt9ruVAU9t2Y9SGi-_Ovj9TtLq_hRUGwD162vKJklQlQTWh0o4
Deposited By: Peetsmann, Ms Elen
ID Code:37844
Deposited On:02 Apr 2020 10:09
Last Modified:02 Apr 2020 10:09
Document Language:Estonian/Eesti
Refereed:Peer-reviewed and accepted

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