Abstract
Abstract Conservation tillage practices integrated with appropriate residue management is an efficient approach in sustainable agriculture to prevent the removal or burning of crop residues. Two years field experiments were conducted to evaluate the effect of wheat residue management on yield, yield component and morphophysiological characteristics of corn. Experimental design was split plot using three factors. Main factor was three tillage systems including moldboard plow, once and two times chisel plow; and sub factors were four wheat residues (0, 25, 50 and 75%) and three nitrogen levels (69, 103.5 and 138 kg/ha). With increase in residue levels and decrease in tillage and nitrogen levels, grain and biological yields and grain number per ear decreased, but thousand grains weight was not significantly different among treatments. Although tillage had no significant effect on leaf area index, increase in residue and decrease in nitrogen levels, decreased corn leaf area index. Since there was no significant difference between two times chisel plow with 25% wheat residue + 103.5 kg N/ha, and moldboard plow with 0% wheat residue + 138 kg N/ha treatments, maintenance of 25% wheat residues, and application of a lower nitrogen rate (103.5 kg N/ha) is recommended in order to achieve sustainability in corn fields. Keywords: Residue management, Soil conservation, Corn planting, Nitrogen
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Claims 7
Claim · model-written summary
Higher residue and lower tillage and nitrogen levels decreased corn grain and biological yields.
- Taxon
- CORN
Zea mays subsp. mayst0 - Treatment
- increase in residue levels and decrease in tillage and nitrogen levelse0
- Outcome
- grain and biological yieldse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With increase in residue levels and decrease in tillage and nitrogen levels, grain and biological yields and grain number per ear decreased”
t0“CORN (ZEA MAYS)”
Claim · model-written summary
Higher residue and lower tillage and nitrogen levels decreased corn grain number per ear.
- Taxon
- CORNZea mays subsp. mayst0
- Treatment
- increase in residue levels and decrease in tillage and nitrogen levelse0
- Outcome
- grain number per eare0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With increase in residue levels and decrease in tillage and nitrogen levels, grain and biological yields and grain number per ear decreased”
t0“CORN (ZEA MAYS)”
Claim · model-written summary
Thousand grains weight did not differ significantly among treatments.
- Taxon
- CORNZea mays subsp. mayst0
- Outcome
- thousand grains weighte0
- Direction
- not significantly differente0
- Comparator
- among treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“thousand grains weight was not significantly different among treatments”
t0“CORN (ZEA MAYS)”
Claim · model-written summary
Tillage had no significant effect on corn leaf area index.
- Taxon
- CORNZea mays subsp. mayst0
- Treatment
- tillagee0
- Outcome
- leaf area indexe0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tillage had no significant effect on leaf area index”
t0“CORN (ZEA MAYS)”
Claim · model-written summary
Increasing residue and decreasing nitrogen reduced corn leaf area index.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- increase in residue and decrease in nitrogen levelse0
- Outcome
- corn leaf area indexe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increase in residue and decrease in nitrogen levels, decreased corn leaf area index”
Claim · model-written summary
Two times chisel plow with 25% wheat residue and 103.5 kg N/ha did not differ significantly from moldboard plow with 0% residue and 138 kg N/ha.
- Taxon
- CORNZea mays subsp. mayst0
- Treatment
- two times chisel plow with 25% wheat residue + 103.5 kg N/hae0
- Outcome
- no significant differencee0
- Direction
- no significant differencee0
- Comparator
- moldboard plow with 0% wheat residue + 138 kg N/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no significant difference between two times chisel plow with 25% wheat residue + 103.5 kg N/ha, and moldboard plow with 0% wheat residue + 138 kg N/ha treatments”
t0“CORN (ZEA MAYS)”
Claim · model-written summary
The authors recommend retaining 25% wheat residue and applying 103.5 kg N/ha for sustainable corn production.
- Taxon
- cornZea mays subsp. mayse0
- Outcome
- maintenance of 25% wheat residues, and application of a lower nitrogen rate (103.5 kg N/ha)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maintenance of 25% wheat residues, and application of a lower nitrogen rate (103.5 kg N/ha) is recommended in order to achieve sustainability in corn fields”
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