Abstract
Abstract Overused soil resources and the build-up of organic residues from industrial processes have resulted in increased risk of environmental contamination. Recycling of organic residues from industry by incorporation into agricultural soil, can provide valuable organic amendment as well as supply nutrients to crops. The effect of applying organic amendments to an agricultural sandy soil on the nitrogen nutrition of wheat (Triticum aestivum L.) and residual effects on the growth of a following maize crop (Zea mays, L.), were assessed under semi-controlled environmental conditions and were compared to nitrogen mineralization prediction obtained from an aerobic incubation. Six different organic residues (composted municipal solid waste, secondary pulp-mill sludge, hornmeal, poultry manure, the solid phase from pig slurry and composted pig manure) were added to a Cambic arenosol, incubated or used in pot experiments, to evaluate and try to predict the availability to crop plants of nitrogen released from these materials. Poultry manure was the most effective amendment in making nitrogen available and enhancing nitrogen uptake by wheat plants resulting in greater dry matter yield. The dried solid phase from pig slurry and hornmeal were also beneficial to wheat growth. There was a greater recovery of nitrogen (N), from organic materials studied, by a maize crop. Poultry manure was the residue that provided a greater residual effect on N supply to maize. Keywords: maizeorganic residuessandy soilshort-time and residual supply of nitrogenwheat ACKNOWLEDGMENTS The authors thank the Science and Technology Foundation for financial support and Isabel Carvalho and Paula Gonçalves for technical assistance.
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Claims 6
Claim · model-written summary
Poultry manure was most effective for nitrogen availability and wheat nitrogen uptake.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- Poultry manuree0
- Outcome
- nitrogen available and enhancing nitrogen uptakee0
- Direction
- most effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Poultry manure was the most effective amendment in making nitrogen available and enhancing nitrogen uptake by wheat plants”
Claim · model-written summary
Poultry manure increased wheat dry matter yield.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Poultry manuree0
- Outcome
- dry matter yielde0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Poultry manure was the most effective amendment in making nitrogen available and enhancing nitrogen uptake by wheat plants resulting in greater dry matter yield”
Claim · model-written summary
Dried pig-slurry solid phase benefited wheat growth.
- Taxon
- wheatTriticum aestivume0
- Treatment
- dried solid phase from pig slurrye0
- Outcome
- wheat growthe0
- Direction
- beneficiale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dried solid phase from pig slurry and hornmeal were also beneficial to wheat growth”
Claim · model-written summary
Hornmeal benefited wheat growth.
- Taxon
- wheatTriticum aestivume0
- Treatment
- hornmeale0
- Outcome
- wheat growthe0
- Direction
- beneficiale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dried solid phase from pig slurry and hornmeal were also beneficial to wheat growth”
Claim · model-written summary
Maize recovered more nitrogen from the organic materials.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a greater recovery of nitrogen (N), from organic materials studied, by a maize crop”
Claim · model-written summary
Poultry manure provided the greatest residual nitrogen supply to maize.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Poultry manure was the residue that provided a greater residual effect on N supply to maize”
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