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Does acidification increase the nitrogen fertilizer replacement value of bio-based fertilizers?

Ivona Sigurnjak UGent, Evi Michels UGent, Sara Crappé, Saskia Buysens, Jayanta K Biswas, Filip Tack UGent, Stefaan De Neve UGent and Erik Meers UGent (2017) JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE. 180(6). p.800-810
abstract
Acidification of manure, digestate and their processed derivatives has been proposed as a technique to, amongst others, mitigate ammonia emissions related to application in the field. The current study investigated whether acidification of (1) pig slurry (PS), (2) liquid fraction of pig slurry (LFPS), (3) digestate (DIG), and (4) liquid fraction of digestate (LFDIG) increases their nitrogen (N) fertilizer replacement value (NFRV) as compared to non-acidified counterparts, a synthetic N fertilizer (calcium ammonium nitrate; CAN) and an unfertilized control. Product performance was evaluated from the perspective of (1) crop development (yield, nutrient uptake, and crop quality assessment) via a pot experiment with Lactuca sativa L. and (2) soil N dynamics [net N release (N-rel,N-net) and net N mineralization] via a soil incubation experiment. Crop yield of pots receiving bio-based fertilizers performed on par' with CAN as compared to unfertilized control, implying that bio-based fertilizers derived from digestate or manure could potentially play a role in replacing synthetic N fertilizers. However, our findings also suggest that acidification did not result in an increased use efficiency of applied N. NFRVs of acidified products were below those of non-acidified products and CAN, with crop yield on average 6-13% and 11-18% lower compared to non-acidified products and the CAN treatment, respectively. A possible explanation for lower performance as compared to non-acidified products could be an inhibitory delay in the N-rel,N-net, which in our experimental design proved to be negative for crops with short production cycles. This pattern was revealed in the incubation experiments in which N-rel,N-net in acidified products remained below that of non-acidified, in this study tentatively attributed to immobilization of mineral N. However, this negative effect on N availability should be reaffirmed in crops with longer production cycles. Finally, some interesting findings with regard to plant composition also warrant further in-depth investigation, e.g., Zn uptake by lettuce in acidified treatments was significantly higher than that of non-acidified treatments. This implies that product pre-treatment may play a future role in biofortification and amelioration of (trace) element composition of crops (arguably for crops with longer production cycles). Improving crop nutritional value by increased uptake of micronutrients is receiving increasing attention.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
acidification, animal manure, digestate, nitrogen dynamics, nitrogen fertilizer replacement value, SLURRY ACIDIFICATION, N MINERALIZATION, SOIL PROPERTIES, ANIMAL SLURRY, CROPS, QUANTIFICATION, DIGESTATE
journal title
JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
J. Plant Nutr. Soil Sci.
volume
180
issue
6
pages
800 - 810
Web of Science type
Article
Web of Science id
000418420200017
ISSN
1436-8730
DOI
10.1002/jpln.201700220
language
English
UGent publication?
yes
classification
A1
additional info
the last two authors contributed equally to this work
copyright statement
I have transferred the copyright for this publication to the publisher
id
8535716
handle
http://hdl.handle.net/1854/LU-8535716
date created
2017-10-28 12:39:02
date last changed
2018-03-06 11:59:33
@article{8535716,
  abstract     = {Acidification of manure, digestate and their processed derivatives has been proposed as a technique to, amongst others, mitigate ammonia emissions related to application in the field. The current study investigated whether acidification of (1) pig slurry (PS), (2) liquid fraction of pig slurry (LFPS), (3) digestate (DIG), and (4) liquid fraction of digestate (LFDIG) increases their nitrogen (N) fertilizer replacement value (NFRV) as compared to non-acidified counterparts, a synthetic N fertilizer (calcium ammonium nitrate; CAN) and an unfertilized control. Product performance was evaluated from the perspective of (1) crop development (yield, nutrient uptake, and crop quality assessment) via a pot experiment with Lactuca sativa L. and (2) soil N dynamics [net N release (N-rel,N-net) and net N mineralization] via a soil incubation experiment. Crop yield of pots receiving bio-based fertilizers performed on par' with CAN as compared to unfertilized control, implying that bio-based fertilizers derived from digestate or manure could potentially play a role in replacing synthetic N fertilizers. However, our findings also suggest that acidification did not result in an increased use efficiency of applied N. NFRVs of acidified products were below those of non-acidified products and CAN, with crop yield on average 6-13\% and 11-18\% lower compared to non-acidified products and the CAN treatment, respectively. A possible explanation for lower performance as compared to non-acidified products could be an inhibitory delay in the N-rel,N-net, which in our experimental design proved to be negative for crops with short production cycles. This pattern was revealed in the incubation experiments in which N-rel,N-net in acidified products remained below that of non-acidified, in this study tentatively attributed to immobilization of mineral N. However, this negative effect on N availability should be reaffirmed in crops with longer production cycles. Finally, some interesting findings with regard to plant composition also warrant further in-depth investigation, e.g., Zn uptake by lettuce in acidified treatments was significantly higher than that of non-acidified treatments. This implies that product pre-treatment may play a future role in biofortification and amelioration of (trace) element composition of crops (arguably for crops with longer production cycles). Improving crop nutritional value by increased uptake of micronutrients is receiving increasing attention.},
  author       = {Sigurnjak, Ivona and Michels, Evi and Crapp{\'e}, Sara and Buysens, Saskia and Biswas, Jayanta K and Tack, Filip and De Neve, Stefaan and Meers, Erik},
  issn         = {1436-8730},
  journal      = {JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE},
  keyword      = {acidification,animal manure,digestate,nitrogen dynamics,nitrogen fertilizer replacement value,SLURRY ACIDIFICATION,N MINERALIZATION,SOIL PROPERTIES,ANIMAL SLURRY,CROPS,QUANTIFICATION,DIGESTATE},
  language     = {eng},
  number       = {6},
  pages        = {800--810},
  title        = {Does acidification increase the nitrogen fertilizer replacement value of~bio-based fertilizers?},
  url          = {http://dx.doi.org/10.1002/jpln.201700220},
  volume       = {180},
  year         = {2017},
}

Chicago
Sigurnjak, Ivona, Evi Michels, Sara Crappé, Saskia Buysens, Jayanta K Biswas, Filip Tack, Stefaan De Neve, and Erik Meers. 2017. “Does Acidification Increase the Nitrogen Fertilizer Replacement Value of Bio-based Fertilizers?” Journal of Plant Nutrition and Soil Science 180 (6): 800–810.
APA
Sigurnjak, I., Michels, E., Crappé, S., Buysens, S., Biswas, J. K., Tack, F., De Neve, S., et al. (2017). Does acidification increase the nitrogen fertilizer replacement value of bio-based fertilizers? JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE, 180(6), 800–810.
Vancouver
1.
Sigurnjak I, Michels E, Crappé S, Buysens S, Biswas JK, Tack F, et al. Does acidification increase the nitrogen fertilizer replacement value of bio-based fertilizers? JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE. 2017;180(6):800–10.
MLA
Sigurnjak, Ivona, Evi Michels, Sara Crappé, et al. “Does Acidification Increase the Nitrogen Fertilizer Replacement Value of Bio-based Fertilizers?” JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE 180.6 (2017): 800–810. Print.