Abstract
Field experiments were conducted in 2010 and 2011 at the Agricultural College of Shiraz University to evaluate the effects of cattle manure and nitrogen (N) fertilizers on soil properties such as soil organic carbon (SOC), soil organic nitrogen (SON), soil electrical conductivity, soil pH and corn yield under two tillage systems. Treatments included tillage systems in two levels as conventional tillage and reduced tillage as subplots, cattle manure (0, 25 and 50 tons ha−1) and N fertilizer (0, 125 and 250 kg N ha−1) as sub-subplots. Results showed that SOC and SON were significantly affected by tillage system in both years of the experiment. SOC and SON were higher in reduced tillage compared to conventional tillage. Tillage system had no significant effect on grain yield, plant height and 1000 seed weight. Increased cattle manure rates at 25 and 50 tons ha−1 increased grain yield by 27% and 38%, respectively, in 2010 and 25% and 25% in 2011. The results showed that application of cattle manure combined with N fertilizer might be an efficient management to increase soil productivity in southern Iran, in soils with poor organic content. Additionally, reduced tillage showed to be an efficient method to increase soil organic matter.
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Claims 8
Claim · model-written summary
Reduced tillage increased soil organic carbon and nitrogen relative to conventional tillage.
- Taxon
- corn
Zea mays subsp. mayst0 - Treatment
- reduced tillagee0
- Outcome
- SOC and SONe0
- Direction
- highere0
- Comparator
- conventional tillagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SOC and SON were higher in reduced tillage compared to conventional tillage”
t0“corn”
Claim · model-written summary
Tillage had no significant effect on grain yield, height or 1000 seed weight.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- Tillage systeme0
- Outcome
- grain yield, plant height and 1000 seed weighte0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tillage system had no significant effect on grain yield, plant height and 1000 seed weight”
t0“corn”
Claim · model-written summary
In 2010, 25 tons ha−1 cattle manure increased grain yield by 27%.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- 25e0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 27%e0
- Qualifier
- 2010e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased cattle manure rates at 25 and 50 tons ha−1 increased grain yield by 27% and 38%, respectively, in 2010 and 25% and 25% in 2011”
t0“corn”
Claim · model-written summary
In 2010, 50 tons ha−1 cattle manure increased grain yield by 38%.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- 50 tons ha−1e0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 38%e0
- Qualifier
- 2010e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased cattle manure rates at 25 and 50 tons ha−1 increased grain yield by 27% and 38%, respectively, in 2010 and 25% and 25% in 2011”
t0“corn”
Claim · model-written summary
In 2011, 25 tons ha−1 cattle manure increased grain yield by 25%.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- 25e0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 25%e0
- Qualifier
- 2011e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased cattle manure rates at 25 and 50 tons ha−1 increased grain yield by 27% and 38%, respectively, in 2010 and 25% and 25% in 2011”
t0“corn”
Claim · model-written summary
In 2011, 50 tons ha−1 cattle manure increased grain yield by 25%.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- 50 tons ha−1e0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 25%e0
- Qualifier
- 2011e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased cattle manure rates at 25 and 50 tons ha−1 increased grain yield by 27% and 38%, respectively, in 2010 and 25% and 25% in 2011”
t0“corn”
Claim · model-written summary
Authors suggest manure combined with nitrogen fertilizer to increase soil productivity in low-organic-content soils in southern Iran.
- Taxon
- cornZea mays subsp. mayst0
- Outcome
- application of cattle manure combined with N fertilizere0
- Qualifier
- soils with poor organic contente0
- Setting
- southern Irane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of cattle manure combined with N fertilizer might be an efficient management to increase soil productivity in southern Iran, in soils with poor organic content”
t0“corn”
Claim · model-written summary
Authors suggest reduced tillage to increase soil organic matter.
- Taxon
- cornZea mays subsp. mayst0
- Outcome
- reduced tillagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced tillage showed to be an efficient method to increase soil organic matter”
t0“corn”
The same questions in other papers
tillage · soil: chemistry · Zea mays (maize)Positive and negative results
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- positive
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- negative
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See all 82 papers →tillage · yield · Zea mays (maize)Positive and negative results
286 papers in the same direction as this paper · 812 in the opposite direction
- positive
- positive
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1,095 papers more in this group
See all 1,099 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.