Acidified Animal Manure Products Combined with a Nitrification Inhibitor Can Serve as a Starter Fertilizer for Maize

Regueiro, Iria; Siebert, P.; Liu, Jingna; Müller-Stöver, Dorette Sophie; Jensen, Lars Stoumann

doi:10.3390/agronomy10121941

Cited by 13 publications

(5 citation statements)

References 38 publications

(44 reference statements)

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“…However, Pantelopoulos et al (2017) found that thermal drying of solid phase digestate decreased phosphorus uptake in ryegrass plants compared with non-dried solid digestate. In another study, acidification of the solid fraction after screw press separation of digestate increased the water-extractable phosphorus content and also plant phosphorus uptake, but not plant biomass, in maize (Zea mays L.) compared with non-acidified solid digestate (Regueiro et al, 2020) (Table 4).…”

Section: Use Of Solid Phase Digestate Products As Phosphorus-rich Pla...mentioning

confidence: 97%

Phosphorus retention and agronomic efficiency of refined manure-based digestate—A review

Persson

Rueda-Ayala

2022

Front. Sustain. Food Syst.

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Digestate, a by-product from anaerobic digestion of organic materials such as animal manure, is considered a suitable plant fertilizer. However, due to its bulkiness and low economic value, it is costly to transport over long distances and store for long periods. Refinement processes to valorize digestate and facilitate its handling as a fertilizer include precipitation of phosphorus-rich mineral compounds, such as struvite and calcium phosphates, membrane filtration methods that concentrate plant nutrients in organic products, and carbonization processes. However, phosphorus retention efficiency in output products from these processes can vary considerably depending on technological settings and characteristics of the digestate feedstock. The effects of phosphorus in plant fertilizers (including those analogous or comparable to refined digestate products) on agronomic productivity have been evaluated in multiple experiments. In this review, we synthesized knowledge about different refinement methods for manure-based digestate as a means to produce phosphorus fertilizers, thereby providing the potential to increase phosphorus retention in the food production chain, by combining information about phosphorus flows in digestate refinement studies and agronomic fertilizer studies. It was also sought to identify the range, uncertainty, and potential retention efficiency by agricultural crops of the original phosphorus amount in manure-based digestate. Refinement chains with solid/wet phase separation followed by struvite or calcium phosphate precipitation or membrane filtration of the wet phase and carbonization treatments of the solid phase were included. Several methods with high potential to extract phosphorus from manure-based wet phase digestate in such a way that it could be used as an efficient plant fertilizer were identified, with struvite precipitation being the most promising method. Synthesis of results from digestate refinement studies and agronomic fertilizer experiments did not support the hypothesis that solid/wet separation followed by struvite precipitation, or any other refinement combination, results in higher phosphorus retention than found for unrefined digestate. Further studies are needed on the use of the phosphorus in the solid phase digestate, primarily on phosphorus-rich soils representative of animal-dense regions, to increase understanding of the role of digestate refinement (particularly struvite precipitation) in phosphorus recycling in agricultural systems.

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Section: Use Of Solid Phase Digestate Products As Phosphorus-rich Pla...mentioning

confidence: 97%

Phosphorus retention and agronomic efficiency of refined manure-based digestate—A review

Persson

Rueda-Ayala

2022

Front. Sustain. Food Syst.

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“…has been widely studied [12], very little research has been conducted to investigate the starter effect of fertilizers permitted in organic farming. Moreover, the scarce information that currently exists derives mainly from summer crops [13,14], because the optimal soil temperature and water content (due to the irrigation) in late spring can easily accelerate the mineralization activity of the soil's microbial community [15]. On the contrary, low temperatures and high rainfall can cause a deficiency in the availability of soil nutrients, especially during the initial growth of winter crops under organic farming conditions [16,17].…”

Section: Introductionmentioning

confidence: 99%

Alternative Solution to Synthetic Fertilizers for the Starter Fertilization of Bread Wheat under Mediterranean Climatic Conditions

Mathlouthi¹,

Ruggeri

Rossini

2022

Agronomy

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Under the high temporal variability of the Mediterranean climate, the prompt emergence of wheat seedlings and early vigor are pivotal attributes, positively affecting the final grain yield. Phosphorus (P) fertilization at sowing is largely used in wheat cultivation to support the early-season growth and promote a more rapid crop establishment. While conventional farming can rely on a wide variety of synthetic fertilizers, the number of options available for the starter fertilization of organic wheat is restricted and many are often unsuitable. Nanotechnology applied to fertilizers could provide a valuable means to combat this issue. This study aimed to evaluate the starter effect of a granular soil bio-enhancer (SBE) on bread wheat grown in two locations of Northern Tunisia as compared to conventional fertilization with diammonium phosphate (DAP). The SBE was obtained by physically grinding phosphate rocks at a nanoscale level and further mixing it with azotobacters. Aerial dry biomass, plant height, crop density, tiller density, leaf area index (LAI), and leaf P concentration were determined up to 70 days after emergence (DAE) to assess the early vigor of wheat seedlings. The application of SBE before sowing resulted in a greater early vigor of wheat seedlings as compared to commercial DAP over three consecutive growing seasons. Specifically, the aerial dry biomass and the plant height at 7 DAE were found to have increased by 56% and 48%, respectively. LAI at 70 DAE was enhanced by 8.5%, while moderate percentage increases were detected for both crop and tiller density. Finally, wheat plants fertilized with SBE showed a significantly higher leaf P concentration than DAP-fertilized plants in 2020 and 2021 (+21% and +32%, respectively).

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“…While an increasing number of published studies is dealing with trade-offs of slurry treatment and application techniques, thereby considering greenhouse gas fluxes, nitrate leaching (Maris et al 2021;Cameira et al 2019;Park et al 2018;Kayser et al 2015;Powell et al 2011) and productivity (Baral et al 2021;Regueiro et al 2020;Fangueiro et al 2017;Huijsmans et al 2016), very little is known on fertilizer N partitioning in the plant-soil-system and on full N balances of conventional slurry broadcast spreading compared to injection and acidification. This particularly applies for montane grasslands of the alpine region in Europe and still prevents a holistic assessment how these refined slurry application techniques affect the actual plant N uptake and fertilizer N stabilization in the soil, which is key to preserve soil fertility on the long term.…”

Section: Introductionmentioning

confidence: 99%

Impacts of slurry acidification and injection on fertilizer nitrogen fates in grassland

Schreiber

Bazaios

Ströbel

et al. 2022

Nutr Cycl Agroecosyst

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Low nitrogen (N) use efficiency of broadcast slurry application leads to nutrient losses, air and water pollution, greenhouse gas emissions and—in particular in a warming climate—to soil N mining. Here we test the alternative slurry acidification and injection techniques for their mitigation potential compared to broadcast spreading in montane grassland. We determined (1) the fate of 15N labelled slurry in the plant-soil-microbe system and soil-atmosphere exchange of greenhouse gases over one fertilization/harvest cycle and (2) assessed the longer-term contribution of fertilizer 15N to soil organic N formation by the end of the growing season. The isotope tracing approach was combined with a space for time climate change experiment. Simulated climate change increased productivity, ecosystem respiration, and net methane uptake irrespective of management, but the generally low N2O fluxes remained unchanged. Compared to the broadcast spreading, slurry acidification showed lowest N losses, thus increased productivity and fertilizer N use efficiency (38% 15N recovery in plant aboveground plant biomass). In contrast, slurry injection showed highest total fertilizer N losses, but increased fertilization-induced soil organic N formation by 9–12 kg N ha−1 season−1. Slurry management effects on N2O and CH4 fluxes remained negligible. In sum, our study shows that the tested alternative slurry application techniques can increase N use efficiency and/or promote soil organic N formation from applied fertilizer to a remarkable extent. However, this is still not sufficient to prevent soil N mining mostly resulting from large plant N exports that even exceed total fertilizer N inputs.

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Acidified Animal Manure Products Combined with a Nitrification Inhibitor Can Serve as a Starter Fertilizer for Maize

Cited by 13 publications

References 38 publications

Phosphorus retention and agronomic efficiency of refined manure-based digestate—A review

Phosphorus retention and agronomic efficiency of refined manure-based digestate—A review

Alternative Solution to Synthetic Fertilizers for the Starter Fertilization of Bread Wheat under Mediterranean Climatic Conditions

Impacts of slurry acidification and injection on fertilizer nitrogen fates in grassland

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