Use of digestate in potato growing technology

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60109807%3A_____%2F16%3AN0000049" target="_blank" >RIV/60109807:_____/16:N0000049 - isvavai.cz</a>

Result on the web

<a href="http://eapr2016agrphys.eu/" target="_blank" >http://eapr2016agrphys.eu/</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Use of digestate in potato growing technology

Original language description

Digestate is material remaining after fermentation process, which is produced by anaerobic digestion during biogas production. Fertilization with digestate is similar as slurry application, but it is always suitable to take into account current nitrogen content. Numerous authors present the effect of digestate application on the quality of plant products, but for potato such findings have been not published yet. In the years 2014 - 2015 a field trial was established at the station in Valečov with digestate compared to typical mineral fertilizer. The obtained results show that the year of growing had a significant impact on yield and quality of tubers, and especially in 2015, when yields were largely affected by extreme drought. Especially tuber yield in 2014 was positively affected by variants with digestate compared to urea but any significant impact on the internal quality of tubers was not found. Rate or kind of fertilizer had no effect on potato quality. Starch content in potato tubers was not statistically significantly affected by fertilization variant. A difference between studied variants was 0,5 % within the variants. Total nitrogen content in tubers was highest, as expected, in the variant dose of digestate 150 % N. As the results show, digestate application could lead to a substantial increase of amount and quality of agricultural crops due to supply of nutrients harmonized with plant demands. Due to the year effect (2015) in the field trials with potato fertilization using digestate statistically significant results were only obtained in 2014.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

GC - Plant growing, crop rotation

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů