Replacement of mineral fertilizers with anaerobically digested pig slurry in paddy fields: assessment of plant growth and grain quality

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...

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Veröffentlicht in:Environmental science and pollution research international 2017-04, Vol.24 (10), p.8916-8923
Hauptverfasser: Zhang, Jin, Wang, Minyan, Cao, Yucheng, Liang, Peng, Wu, Shengchun, Leung, Anna Oi Wah, Christie, Peter
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container_start_page 8916
container_title Environmental science and pollution research international
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creator Zhang, Jin
Wang, Minyan
Cao, Yucheng
Liang, Peng
Wu, Shengchun
Leung, Anna Oi Wah
Christie, Peter
description 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/P 2 O 5 /K 2 O = 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.
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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/P 2 O 5 /K 2 O = 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. 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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.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>26250820</pmid><doi>10.1007/s11356-015-5125-z</doi><tpages>8</tpages></addata></record>
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source MEDLINE; Springer Journals
subjects Agricultural production
Agriculture
Alternative energy sources
Amino acids
amylose
Animal wastes
Animals
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Carbon
Compound fertilizers
copper
Crop production
Cultivation
Earth and Environmental Science
Eco-Aquaculture
Ecotoxicology
Edible Grain - chemistry
Environment
Environmental Chemistry
Environmental Health
Environmental science
Experiments
Farms
Fertilizers
field experimentation
gels
Grain
Grain cultivation
grain protein
grain quality
grain yield
Heavy metals
Irrigation
Irrigation water
Livestock
livestock and meat industry
Livestock breeding
Manures
Mineral fertilizers
Minerals - metabolism
Nitrogen
Nitrogen - metabolism
nitrogen content
Nutrients
Oryza
paddies
Pig manure
Plant growth
recycling
Rice
risk
Slurries
Studies
Sus scrofa
Sustainable agriculture
Sustainable development
Sustainable Development and Public Health
Swine
tillering
Urea
Waste Water Technology
Water Management
Water Pollution Control
title Replacement of mineral fertilizers with anaerobically digested pig slurry in paddy fields: assessment of plant growth and grain quality
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