Abstract
Experiments were conducted in growth chambers growing wheat on a soil initially low in NO 3 -N. At rates up to 100 ppm N, grain yield increased with succeeding increments of fertilizer-N. Increased temperatures (15, 21, and 25 C) significantly decreased grain yield in most instances. Low to moderate stress soil moisture regimes (0.3–0.5 and 0.3–2.8 bars) had no significant influence on grain yield. A line was plotted for percent protein vs. added fertilizer-N resulting in a concave protein curve, with an initial decrease in protein to 50 ppm N and a subsequent rise with 100 and 200 ppm N. At each level of N, a close negative correlation was shown between percent protein and grain yield. The effect of increased temperature in increasing percent protein was found to be mostly an indirect effect through the influence of temperature on grain yield. Moisture regime was found to have no significant direct effect on percent protein.
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Claims 8
Claim · model-written summary
Grain yield increased with fertilizer nitrogen increments up to 100 ppm N.
- Taxon
- WHEAT
Triticum aestivumt0 - Treatment
- fertilizer-Ne0
- Outcome
- grain yielde0
- Direction
- increasede0
- Qualifier
- up to 100 ppm Ne0
- Comparator
- succeeding increments of fertilizer-Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At rates up to 100 ppm N, grain yield increased with succeeding increments of fertilizer-N.”
t0“WHEAT”
Claim · model-written summary
Increasing temperature from the tested 15, 21 and 25 C levels significantly decreased grain yield in most instances.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- Increased temperatures (15, 21, and 25 C)e0
- Outcome
- grain yielde0
- Direction
- decreasede0
- Qualifier
- in most instancese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased temperatures (15, 21, and 25 C) significantly decreased grain yield in most instances.”
t0“WHEAT”
Claim · model-written summary
Low to moderate soil moisture stress had no significant influence on grain yield.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- Low to moderate stress soil moisture regimes (0.3–0.5 and 0.3–2.8 bars)e0
- Outcome
- grain yielde0
- Direction
- no significant influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low to moderate stress soil moisture regimes (0.3–0.5 and 0.3–2.8 bars) had no significant influence on grain yield.”
t0“WHEAT”
Claim · model-written summary
Grain protein percentage initially decreased with added fertilizer nitrogen through 50 ppm N.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- added fertilizer-Ne1
- Outcome
- proteine0
- Direction
- decreasee0
- Qualifier
- to 50 ppm Ne0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an initial decrease in protein to 50 ppm N and a subsequent rise with 100 and 200 ppm N”
e1“percent protein vs. added fertilizer-N”
t0“WHEAT”
Claim · model-written summary
Grain protein percentage rose at 100 and 200 ppm N.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- added fertilizer-Ne1
- Outcome
- percent proteine1
- Direction
- risee0
- Qualifier
- 100 and 200 ppm Ne0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a subsequent rise with 100 and 200 ppm N”
e1“percent protein vs. added fertilizer-N”
t0“WHEAT”
Claim · model-written summary
Protein percentage and grain yield were closely negatively correlated at each nitrogen level.
- Taxon
- WHEATTriticum aestivumt0
- Outcome
- percent proteine0
- Direction
- negative correlatione0
- Qualifier
- At each level of Ne0
- Comparator
- grain yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At each level of N, a close negative correlation was shown between percent protein and grain yield.”
t0“WHEAT”
Claim · model-written summary
The authors attribute the temperature-associated rise in protein percentage mostly to its effect on grain yield.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- increased temperaturee0
- Outcome
- percent proteine0
- Direction
- increasinge0
- Qualifier
- indirect effect through the influence of temperature on grain yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of increased temperature in increasing percent protein was found to be mostly an indirect effect through the influence of temperature on grain yield.”
t0“WHEAT”
Claim · model-written summary
Moisture regime had no significant direct effect on protein percentage.
- Taxon
- WHEATTriticum aestivumt0
- Treatment
- Moisture regimee0
- Outcome
- percent proteine0
- Direction
- no significant direct effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moisture regime was found to have no significant direct effect on percent protein.”
t0“WHEAT”
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