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Plasma Treated Cattle Slurry Moderately Increases Cereal Yields
Version 1
: Received: 4 May 2023 / Approved: 5 May 2023 / Online: 5 May 2023 (10:49:06 CEST)
A peer-reviewed article of this Preprint also exists.
Cottis, T.; Mousavi, H.; Solberg, S.Ø. Plasma Treated Cattle Slurry Moderately Increases Cereal Yields. Agronomy 2023, 13, 1549. Cottis, T.; Mousavi, H.; Solberg, S.Ø. Plasma Treated Cattle Slurry Moderately Increases Cereal Yields. Agronomy 2023, 13, 1549.
Abstract
Plasma treatment of livestock slurry and biogas digestate is a method by which the nitrogen content of organic fertilizers can be increased. The resultant nitrogen-enriched organic fertilizer (NEO) contains twice as much plant-available nitrogen, and its pH is reduced, which is known to reduce ammonia volatilization. The current study included 14 spring wheat and barley field trials in Norway fertilized by NEO and other fertilizers over three years. The results showed that 120 kg N ha-1 in NEO yielded the same as 95 kg N ha-1 in mineral fertilizer considering the grain yields and 100 kg N ha-1 regarding the harvested nitrogen yield in the grains. On average, 39 tons ha-1 of untreated slurry supplemented with mineral fertilizers Opti-NS up to 120 kg N ha-1 yielded 5083 kg ha-1 of barley and 5290 kg ha-1 of spring wheat. Filtrating 39 tons of untreated slurry and running it through the N2 Applied unit gave 35 tons of NEO with 120 kg N. 35 tons ha-1 of NEO yielded 5068 kg ha-1 of barley and 5155 kg ha-1 of spring wheat. Filtrating the slurry increased grain yields by 756 and 447 kg ha-1 in spring wheat and barley, respectively, compared to the untreated slurry. 120 kg N ha-1 in mineral fertilizer yielded 5443 kg of barley and 6123 kg of spring wheat. Combining 12 kg N ha-1 in mineral fertilizer at sowing day and 108 kg N ha-1 in NEO at three leaves stage led to a higher yield in spring wheat than 120 kg ha-1 NEO spread at sowing day in two out of three experimental years.
Keywords
agronomy; N2 Applied; field crops; fertilization; innovation; wheat; barley; nitrogen
Subject
Biology and Life Sciences, Agricultural Science and Agronomy
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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