Abstract
SUMMARY Weekly measurements in a maize silage crop grown at three populations, each at three levels of nitrogen, showed that leaf area index, crop growth rate and total whole plant yield were greatest at the highest plant population (430,000/ha.) and lowest at the low population (47,000/ha.). At the former maximum yields of dry matter and crude protein occurred approximately seventy-five days from sowing, when the cob contribution was small. With wider spacing maximum yields occurred later. At the intermediate population (107,000/ha.), and with adequate nitrogen, sowing on the square was superior to sowing in wide rows. Nitrogen did not preferentially affect the relative dry matter yield of any growth component; plant population had a greater influence on total whole plant yield than nitrogen.
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Claims 9
Claim · model-written summary
Leaf area index was greatest at the highest maize population and lowest at the low population.
- Treatment
- highest plant population (430,000/ha.)e0
- Outcome
- leaf area indexe0
- Direction
- greateste0
- Comparator
- low population (47,000/ha.)e0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf area index, crop growth rate and total whole plant yield were greatest at the highest plant population (430,000/ha.) and lowest at the low population (47,000/ha.).”
t0“Maize”
Claim · model-written summary
Crop growth rate was greatest at the highest population and lowest at the low population.
- Treatment
- highest plant population (430,000/ha.)e0
- Outcome
- crop growth ratee0
- Direction
- greateste0
- Comparator
- low population (47,000/ha.)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf area index, crop growth rate and total whole plant yield were greatest at the highest plant population (430,000/ha.) and lowest at the low population (47,000/ha.).”
t0“Maize”
Claim · model-written summary
Whole plant yield was greatest at the highest population and lowest at the low population.
- Treatment
- highest plant population (430,000/ha.)e0
- Outcome
- total whole plant yielde0
- Direction
- greateste0
- Comparator
- low population (47,000/ha.)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf area index, crop growth rate and total whole plant yield were greatest at the highest plant population (430,000/ha.) and lowest at the low population (47,000/ha.).”
t0“Maize”
Claim · model-written summary
At the highest population, dry matter yield peaked about seventy-five days after sowing.
- Outcome
- maximum yields of dry mattere0
- Direction
- maximume0
- Value
- approximately seventy-five dayse0
- Qualifier
- cob contribution was smalle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the former maximum yields of dry matter and crude protein occurred approximately seventy-five days from sowing, when the cob contribution was small.”
t0“Maize”
Claim · model-written summary
At the highest population, crude protein yield peaked about seventy-five days after sowing.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the former maximum yields of dry matter and crude protein occurred approximately seventy-five days from sowing, when the cob contribution was small.”
t0“Maize”
Claim · model-written summary
At wider spacing, maximum yields occurred later.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With wider spacing maximum yields occurred later.”
t0“Maize”
Claim · model-written summary
At intermediate population and adequate nitrogen, square sowing outperformed wide rows.
- Treatment
- sowing on the squaree0
- Outcome
- superiore0
- Direction
- superiore0
- Qualifier
- intermediate population (107,000/ha.), and with adequate nitrogene0
- Comparator
- sowing in wide rowse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the intermediate population (107,000/ha.), and with adequate nitrogen, sowing on the square was superior to sowing in wide rows.”
t0“Maize”
Claim · model-written summary
Nitrogen did not preferentially affect the relative dry matter yield of growth components.
- Treatment
- Nitrogene0
- Outcome
- relative dry matter yield of any growth componente0
- Direction
- did not preferentially affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen did not preferentially affect the relative dry matter yield of any growth component”
t0“Maize”
Claim · model-written summary
Plant population influenced whole plant yield more than nitrogen.
- Treatment
- plant populatione0
- Outcome
- total whole plant yielde0
- Direction
- greater influencee0
- Comparator
- nitrogene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant population had a greater influence on total whole plant yield than nitrogen.”
t0“Maize”
The same questions in other papers
nitrogen · yield · Zea mays (maize)Positive and negative results
278 papers in the same direction as this paper · 1,906 in the opposite direction
- positive
- positive
- positive
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See all 2,185 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.