Abstract
Abstract Four rates of cow slurry (0, 35, 70 and 105 t/ha) and inorganic nitrogen (0, 40, 80 and 120 kg/ha) were applied in a factorial arrangement to forage maize plots on a sandy loam soil (Hurst Series). The response of maize DM yield to inorganic N was small above 40 kg N/ha. Slurry alone gave satisfactory yields and up to 70 t/ha improved the response to inorganic N. Slurry at 105 t/ha tended to delay crop maturity and reduced yields when more than 40 kg inorganic N/ha was applied. The percentage N, P and K in the soil before drilling and in the crop at the silage stage were positively related to the amount of slurry applied. Appreciable amounts of P, K and Mg remained in a “plant available” state in the soil after the maize harvest.
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Claims 7
Claim · model-written summary
Maize dry-matter yield showed little further response to inorganic nitrogen above 40 kg N/ha.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The response of maize DM yield to inorganic N was small above 40 kg N/ha.”
Claim · model-written summary
Slurry alone gave satisfactory maize yields.
Not reportedTaxonComparator
Verbatim
e0“Slurry alone gave satisfactory yields and up to 70 t/ha improved the response to inorganic N.”
Claim · model-written summary
Slurry up to 70 t/ha improved the yield response to inorganic nitrogen.
Not reportedTaxonComparator
Verbatim
e0“Slurry alone gave satisfactory yields and up to 70 t/ha improved the response to inorganic N.”
Claim · model-written summary
Slurry at 105 t/ha tended to delay crop maturity.
Not reportedTaxonComparator
Verbatim
e0“Slurry at 105 t/ha tended to delay crop maturity and reduced yields when more than 40 kg inorganic N/ha was applied.”
Claim · model-written summary
Slurry at 105 t/ha reduced yield when more than 40 kg inorganic nitrogen per hectare was applied.
- Treatment
- Slurry at 105 t/hae0
- Outcome
- yieldse0
- Direction
- reducede0
- Qualifier
- more than 40 kg inorganic N/hae0
Not reportedTaxonComparator
Verbatim
e0“Slurry at 105 t/ha tended to delay crop maturity and reduced yields when more than 40 kg inorganic N/ha was applied.”
Claim · model-written summary
Crop nitrogen, phosphorus and potassium percentages at silage stage rose with slurry amount.
- Organ / stage
- silage stagee0
- Treatment
- slurrye0
- Outcome
- percentage N, P and K in the soil before drilling and in the crope0
- Direction
- positively relatede0
Not reportedTaxon
Verbatim
e0“The percentage N, P and K in the soil before drilling and in the crop at the silage stage were positively related to the amount of slurry applied.”
Claim · model-written summary
Plant-available P, K and Mg remained in soil after maize harvest.
- Outcome
- P, K and Mg remained in a “plant available” state in the soile0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Appreciable amounts of P, K and Mg remained in a “plant available” state in the soil after the maize harvest.”
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