Abstract
Long-term research trials provide an understanding of long-term effects on crop production. This long-term research studied the effect of conventional tillage (CT) and no-tillage (NT) systems. Factors of this 22-year study of corn (Zea mays L.) production also included the application of nitrogen (N) in the forms of ammonium nitrate and manure at rates of 150 lb/N/a. Corn grain yield trends during 2012 to 2016 were affected by the interaction between N source and year (P < 0.05). The interaction between tillage practices and N source and the overall interaction between the last 5 years did not yield performance (P > 0.05). Under the studied conditions the 75 lb/N/a as N fertilizer or manure achieved high corn yields.
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Claims 4
Claim · model-written summary
Corn grain yield trends differed by the interaction of nitrogen source and year.
- Taxon
- Corn
Zea mays subsp. mayse0 - Treatment
- N sourcee0
- Outcome
- grain yield trendse0
- Qualifier
- 2012 to 2016e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn grain yield trends during 2012 to 2016 were affected by the interaction between N source and year (P < 0.05)”
Claim · model-written summary
Tillage by nitrogen source interaction did not significantly change yield performance.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- tillage practices and N sourcee0
- Outcome
- yield performancee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The interaction between tillage practices and N source and the overall interaction between the last 5 years did not yield performance (P > 0.05)”
e1“corn (Zea mays L.) production”
Claim · model-written summary
An overall interaction over the last five years did not significantly affect yield performance.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- last 5 yearse0
- Outcome
- yield performancee0
Not reportedSettingDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the overall interaction between the last 5 years did not yield performance (P > 0.05)”
e1“corn (Zea mays L.) production”
Claim · model-written summary
Nitrogen fertilizer or manure at 75 lb/N/a achieved high corn yields.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- 75 lb/N/a as N fertilizer or manuree0
- Outcome
- corn yieldse0
- Direction
- highe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 75 lb/N/a as N fertilizer or manure achieved high corn yields”
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