Abstract
Soil acidity is one property associated with decline in soil fertility and low productivity. One important cause of soil acidity is the use of acid-forming inorganic fertilizers. A field study was conducted to examine the development of soil acidity from long-term use of urea and its effects on selected soil properties and whether burning of stover on land ameliorated soil acidity. Nitrogen was applied as urea (46%N) at 0, 60, 120 and 180 kg N ha-1 to maize grown on an Alfisol. Following 4 years of annual application of urea, the treated soil became more acid than the control plots with no added urea. The extent of soil acidification was significantly (p
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Claims 1
Claim · model-written summary
Four years of annual urea application made the soil more acid than unfertilized control plots on an Alfisol under maize.
- Treatment
- annual application of ureae2
- Outcome
- soil aciditye0
- Direction
- more acide2
- Comparator
- control plots with no added ureae2
- Setting
- field studye0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field study was conducted to examine the development of soil acidity from long-term use of urea”
e1“Nitrogen was applied as urea (46%N) at 0, 60, 120 and 180 kg N ha-1 to maize grown on an Alfisol”
e2“Following 4 years of annual application of urea, the treated soil became more acid than the control plots with no added urea”
The same questions in other papers
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