Digestate application with regard to greenhouse gases and physical soil properties
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Kuupäev
2021
Kättesaadav alates
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Abstrakt
The article deals with the method of application of digestate with regard to the
environment, soil properties and utilization of nutrients by plants. The aim is to monitor the
dependence of the emission gas leakage and the dose of applied fertilizer. With the current
expansion of biogas plants, a large amount of waste product, especially digestate, is being
generated. This product is most often used as a liquid organic fertilizer because it contains
substances important for plant growth. The disadvantage of this fertilizer is the release of
greenhouse gases into the air. The digestate contains mainly ammonia, nitrogen in the residual
organic matter and is a fertilizer with rapidly releasing nitrogen. The ammonium nitrogen
contained in the digestate is easily subject to air losses. Therefore, a method of application for a
certain crop is sought, where the smallest leaks of gases into the air occur. Different amounts of
doses for the same route of administration are compared. To measure the amount of emission
gases, a wind tunnel was placed on each variant of the application, taking air above the soil
surface, which is discharged to the gas analyser. The monitored greenhouse gases are CH4, NH3
and CO2. Furthermore, physical properties of soil were monitored in order to verify the conditions
of the experiment. One of the parameters measured was the soil bulk density of the soil by taking
intact soil samples. The penetration resistance of the soil was also determined, which indicates
the degree of compaction. The use of nutrients was assessed through the condition of the stand
on each variant by monitoring vegetation indices using remote sensing of the earth.
Kirjeldus
Received: February 1st, 2021 ; Accepted: June 18th, 2021 ; Published: August 18th, 2021 ; Correspondence: korba@tf.czu.cz
Märksõnad
digestate, greenhouse gases, remote sensing, physical soil properties, ammonia, articles