TY - JOUR
T1 - Replacement of mineral fertilizers with anaerobically digested pig slurry in paddy fields
T2 - assessment of plant growth and grain quality
AU - Zhang, Jin
AU - Wang, Minyan
AU - Cao, Yucheng
AU - Liang, Peng
AU - Wu, Shengchun
AU - LEUNG, Anna Oi Wah
AU - Christie, Peter
N1 - Publisher Copyright:
© 2015, Springer-Verlag Berlin Heidelberg.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2017/4/1
Y1 - 2017/4/1
N2 - Rice cultivation requires large quantities of irrigation water and mineral fertilizers. This provides an opportunity for the recycling of the plant nutrients in anaerobically digested pig slurry, large amounts of which are generated in Chinese pig farms. Hence, to promote the sustainable development of livestock and poultry breeding and rice production, a micro-plot field experiment was carried out to assess whether or not slurry can replace mineral fertilizers in rice paddy production in terms of plant tillering, grain quality, and yields. The results indicate that the total N content of the slurry can serve as an alternative source of N when compared to the control (450 kg ha−1 commercial compound fertilizer (N/P2O5/K2O = 15:15:15) as basal fertilizer, 300 kg ha−1 urea (N% = 46), and 150 kg ha−1 commercial compound fertilizer as top-dressed fertilizer). No negative effects on plant growth or grain yield were observed, although there may be a potential risk due to an increase in grain Cu concentration. The amylose content and gel consistency of the rice grains were enhanced significantly by the use of slurry as a basal fertilizer, but the grain protein and total amino acid contents decreased. The results suggest that anaerobically digested pig slurry can replace mineral fertilizers in rice production when applied as a basal dressing together with urea and commercial compound fertilizer as top-dressed fertilizers.
AB - Rice cultivation requires large quantities of irrigation water and mineral fertilizers. This provides an opportunity for the recycling of the plant nutrients in anaerobically digested pig slurry, large amounts of which are generated in Chinese pig farms. Hence, to promote the sustainable development of livestock and poultry breeding and rice production, a micro-plot field experiment was carried out to assess whether or not slurry can replace mineral fertilizers in rice paddy production in terms of plant tillering, grain quality, and yields. The results indicate that the total N content of the slurry can serve as an alternative source of N when compared to the control (450 kg ha−1 commercial compound fertilizer (N/P2O5/K2O = 15:15:15) as basal fertilizer, 300 kg ha−1 urea (N% = 46), and 150 kg ha−1 commercial compound fertilizer as top-dressed fertilizer). No negative effects on plant growth or grain yield were observed, although there may be a potential risk due to an increase in grain Cu concentration. The amylose content and gel consistency of the rice grains were enhanced significantly by the use of slurry as a basal fertilizer, but the grain protein and total amino acid contents decreased. The results suggest that anaerobically digested pig slurry can replace mineral fertilizers in rice production when applied as a basal dressing together with urea and commercial compound fertilizer as top-dressed fertilizers.
KW - Anaerobically digested slurry
KW - Food safety
KW - Heavy metals
KW - Replacement fertilization
KW - Rice quality
KW - Sustainable agriculture
UR - http://www.scopus.com/inward/record.url?scp=84938704223&partnerID=8YFLogxK
U2 - 10.1007/s11356-015-5125-z
DO - 10.1007/s11356-015-5125-z
M3 - Journal article
C2 - 26250820
AN - SCOPUS:84938704223
SN - 0944-1344
VL - 24
SP - 8916
EP - 8923
JO - Environmental Science and Pollution Research
JF - Environmental Science and Pollution Research
IS - 10
ER -