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The soil microbial hydrolytic activity, content of nitrogen and organic carbon were enhanced by organic farming management using cover crops and composts in potato cultivation

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Eremeev, Viacheslav; Talgre, Liina; Kuht, Jaan; Maeorg, Erkki; Esmaeilzadeh-Salestani, Keyvan; Alaru, Maarika; Loit, Evelin; Runno-Paurson, Eve and Luik, Anne (2019) The soil microbial hydrolytic activity, content of nitrogen and organic carbon were enhanced by organic farming management using cover crops and composts in potato cultivation. Acta Agriculturae Scandinavica, Section B — Soil & Plant Science, 70 (1), pp. 87-94.

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Online at: https://www.tandfonline.com/doi/full/10.1080/09064710.2019.1673475

Summary

Nowadays, in sustainable agriculture growing winter cover crops and using organic manure have been widely implemented to improve soil quality which leads to increase of microbial activity. Six-year study was performed to evaluate the effect of cropping system on soil microbial hydrolytic activity, content of soil organic carbon (SOC) and total nitrogen (Ntot) under potato cultivation by considering various management systems, while comparing the soil parameters after previous crop. The experiment consisted of five-field crop rotation with two diferent organic (Org 0 as control and Org II with winter cover crops plus added composted manure) and conventional (Conv 0 as control and Conv II with mineral N, 150 kg ha–1) farming systems. The results showed that hydrolytic activity of soil microbes decreased in every farming system Under potato cultivation. Interestingly, after potato cultivation, the lowest and highest decrease in the soil microbial hydrolytic activity were seen in Org II and Conv II systems, respectively. The highest soil microbial hydrolytic activity was measured in system Org II where incorporation of biomass from winter cover crops and cattle manure was used. Finally, SOC and Ntot were higher in organic farming systems and there no significant changes after potato cultivation.


EPrint Type:Journal paper
Keywords:Conventional farming; organic farming; soil organic carbon; Solanum tuberosum; total nitrogen; winter cover crop
Subjects: Soil > Soil quality
Soil > Soil quality > Soil biology
Crop husbandry > Production systems > Root crops
Research affiliation: Estonia > Estonian University of Life Sciences
European Union > CORE Organic Plus > FertilCrop
H2020 or FP7 Grant Agreement Number:618107
DOI:10.1080/09064710.2019.1673475
Deposited By: Peetsmann, Ms Elen
ID Code:37828
Deposited On:01 Apr 2020 10:10
Last Modified:02 Apr 2020 08:50
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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