Abstract
ABSTRACT Long-term application of organic manures in crop production often leads to environmental problems. After applying poultry litter on cotton (Gossypium hirsutum L.) from 1994 to 1998, a test crop of corn (Zea mays L.) was planted in 1999 to understand the poultry litter's long-term effects on succeeding crop. The experiment was conducted on a Decatur silt loam soil (Clayey, Kaolinitic thermic, Typic paleudult) at Belle Mina, AL. Treatments on cotton included three sources of nitrogen: urea, fresh poultry litter (FPL), and composted poultry litter (CPL); three nitrogen rates: 40, 80, and 120 kg N ha−1; with and without nitrification inhibitor carboxymethyl pyrazole (CMP). The test crop, corn, received no fertilization except for super imposed N treatments in the control plots. The residual effects of 40 kg N ha−1 FPL and CPL increased corn yields by 9% and 24%, respectively, compared to control; similar responses at 120 kg N ha−1 of FPL and CPL were 81% and 202%, respectively. The differences between the previous 80 and 120 kg N ha−1 were also significant. There was no effect of CMP on corn yield and N uptake in 1999 or on cotton in the previous 5 years of application. Rotation of cereal crops like corn, with fibrous root systems, helps to remove any residual nitrogen from long-term poultry litter application to dicots like cotton, thus reducing any environmental concerns.
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Claims 9
Claim · model-written summary
Residual 40 kg N ha−1 fresh poultry litter increased corn yield by 9% versus control.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- 40 kg N ha−1 FPLe0
- Outcome
- corn yieldse0
- Direction
- increasede0
- Value
- 9%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The residual effects of 40 kg N ha−1 FPL and CPL increased corn yields by 9% and 24%, respectively, compared to control”
Claim · model-written summary
Residual 40 kg N ha−1 composted poultry litter increased corn yield by 24% versus control.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- 40 kg N ha−1 FPL and CPLe0
- Outcome
- corn yieldse0
- Direction
- increasede0
- Value
- 24%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The residual effects of 40 kg N ha−1 FPL and CPL increased corn yields by 9% and 24%, respectively, compared to control”
Claim · model-written summary
Residual 120 kg N ha−1 FPL increased corn yield by 81%.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- 120 kg N ha−1 of FPLe0
- Outcome
- responsese0
- Value
- 81%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“similar responses at 120 kg N ha−1 of FPL and CPL were 81% and 202%, respectively”
t0“Corn”
Claim · model-written summary
Residual 120 kg N ha−1 CPL increased corn yield by 202%.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- 120 kg N ha−1 of FPL and CPLe0
- Outcome
- responsese0
- Value
- 202%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“similar responses at 120 kg N ha−1 of FPL and CPL were 81% and 202%, respectively”
t0“Corn”
Claim · model-written summary
Corn yield differed significantly between prior 80 and 120 kg N ha−1 rates.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- 120 kg N ha−1e0
- Outcome
- differencese0
- Comparator
- 80e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The differences between the previous 80 and 120 kg N ha−1 were also significant.”
t0“Corn”
Claim · model-written summary
CMP had no effect on corn yield.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- CMPe0
- Outcome
- corn yielde0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no effect of CMP on corn yield and N uptake in 1999”
Claim · model-written summary
CMP had no effect on corn nitrogen uptake.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- CMPe0
- Outcome
- N uptakee0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no effect of CMP on corn yield and N uptake in 1999”
Claim · model-written summary
CMP had no effect on cotton during the prior five application years.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- CMPe0
- Outcome
- cottone0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no effect of CMP on corn yield and N uptake in 1999 or on cotton in the previous 5 years of application.”
Claim · model-written summary
The authors recommend corn rotation to remove residual nitrogen after poultry litter on cotton.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Rotation of cereal crops like corne0
- Outcome
- remove any residual nitrogene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rotation of cereal crops like corn, with fibrous root systems, helps to remove any residual nitrogen from long-term poultry litter application to dicots like cotton”
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3,484 papers in the same direction as this paper · 338 in the opposite direction · 85 reporting no difference from an alternative
- no effect
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3,904 papers more in this group
See all 3,908 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.