Abstract
The comparative effectiveness of residual effects of 300 kg/ha NPK 15-15-15 fertilizer, 7t/ha poultry manure (Pm), five combinations of reduced levels of NPK 15-15-15 fertilizer and poultry manure, and control (no fertilizer) on soil and plant nutrient uptake and maize yield were investigated in a field trial during the 1996 and 1997 second cropping seasons at the Teaching and Research Farm of the Federal University of Technology, Akure (7o 16” N, 5 o 12”E), Nigeria. The soil type of the trial site was lowly fertile loamy sand. Application of poultry manure, and combinations of poultry manure with NPK fertilizer gave high residual effects on soil chemical composition and increased plant height, leaf area, dry matter yield, plant nutrient uptake and grain yield of maize significantly. Residual effects of poultry manure, and combined application of reduced quantities of poultry manure and NPK fertilizer gave higher soil organic matter, N, P, K, Ca, Mg and micro-elements contents compared to application of 300 kg/ha NPK 15-15-15 fertilizer and control. The residual effects of 3t/ha poultry manure plus 200kg/ha NPK fertilizer and 7t/ha poultry manure produced non-significantly different values. However, the 7t/ha poultry manure had the best residual effects on maize yield and soil fertility. The 3t/ha poultry manure plus 200kg/ha NPK fertilizer is recommended as substitute for 7t/ha poultry manure or 300kg/ha NPK fertilizer. Key words:Poultry manure; NPK fertilizer; residual soil fertility; nutrient uptake; maize yield Moor Journal of Agricultural Research Vol.4(2) 2003: 191-197
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Claims 6
Claim · model-written summary
Poultry manure and manure plus NPK increased maize height, leaf area and dry matter yield significantly.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“Application of poultry manure, and combinations of poultry manure with NPK fertilizer gave high residual effects on soil chemical composition and increased plant height, leaf area, dry matter yield, plant nutrient uptake and grain yield of maize significantly.”
Claim · model-written summary
These treatments increased maize nutrient uptake and grain yield significantly.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of poultry manure, and combinations of poultry manure with NPK fertilizer gave high residual effects on soil chemical composition and increased plant height, leaf area, dry matter yield, plant nutrient uptake and grain yield of maize significantly.”
Claim · model-written summary
Manure and combined applications produced higher soil nutrient and organic matter contents than NPK alone and control.
- Treatment
- poultry manuree0
- Outcome
- soil organic matter, N, Pe0
- Direction
- highere0
- Comparator
- application of 300 kg/ha NPK 15-15-15 fertilizer and controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“Residual effects of poultry manure, and combined application of reduced quantities of poultry manure and NPK fertilizer gave higher soil organic matter, N, P, K, Ca, Mg and micro-elements contents compared to application of 300 kg/ha NPK 15-15-15 fertilizer and control.”
Claim · model-written summary
The two manure regimes produced values that did not differ significantly.
- Treatment
- 3t/ha poultry manure plus 200kg/ha NPK fertilizere0
- Outcome
- valuese0
- Direction
- non-significantly differente0
- Comparator
- 7t/ha poultry manuree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“The residual effects of 3t/ha poultry manure plus 200kg/ha NPK fertilizer and 7t/ha poultry manure produced non-significantly different values.”
Claim · model-written summary
Seven tonnes per hectare of manure gave the best residual effects on maize yield and soil fertility.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 7t/ha poultry manure had the best residual effects on maize yield and soil fertility.”
Claim · model-written summary
The authors recommend 3t/ha manure plus 200kg/ha NPK as a substitute for 7t/ha manure or 300kg/ha NPK.
- Outcome
- 3t/ha poultry manure plus 200kg/ha NPK fertilizer is recommended as substitutee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“The 3t/ha poultry manure plus 200kg/ha NPK fertilizer is recommended as substitute for 7t/ha poultry manure or 300kg/ha NPK fertilizer.”
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