Paper · 2012 · Egyptian Journal of Agricultural Research

INFLUENCE OF SOME SEEDING AND NITROGEN RATES ON GRAIN YIELD AND INSECT NATURAL INFESTATION OF SOME WHEAT CULTIVARS

MOHAMED A. KHALED; ADEL M. EL-RAWY

20
claims
39
verbatim quotes
4
citations
2
research areas
✓
Open access

Abstract

A Field experiment was performed on Bahteem Agric. Res. Station Farm Qalubia Governorate , during the two growing seasons 2009/10 and 2010/11 to study the effect of three seeding rates i.e. 300, 350 and 400 grains /m2 and two nitrogen fertilizer levels i.e. 75 and 90 kg N/fed on yield and yield components as well as grain crude protein and total carbohydrate percentages . In addition the intensity of natural infestation with cereal aphids and leafminer on six wheat cultivars i.e. Sakha 93, Sakha 94, Gemmeiza 10 and Sids 12 (bread wheat); Beni-Sweif 4 and Beni-Sweif 5 (durum wheat) was also investigated. Results indicated that Beni-Sweif 4 cultivar exhibited longer period to heading (89.5 days) and to maturity (140.5 days). On the other hand, Beni-Sweif 5 exhibited taller plants (101.2 cm) followed by Beni-Sweif 4 (99.9 cm) and Sids 12 (97.5 cm). While Beni-Sweif 5 and Sids 12 cultivars gave more spikes (518.5 and 516.1 spikes/ m2, respectively), but highest number of grains /spike was shown by Beni-Sweif 5 and Beni-Sweif 4 (67.4 and 66.0 grains/spike, respectively).The highest values of 1000-grain weight and grain yield were in Beni-Sweif 4 and Sids 12 (48.6 and 48.5 g & 16.2 and 16.3 ardab/fed., respectively). While Beni-Sweif 4 gave the highest value of straw yield (3.6 ton/fed.).On the other hand, Beni-Sweif 5 and Beni-Sweif 4 cultivars gave the highest values of grain crude protein and total carbohydrate percentages (12.2 and 11.9 % & 76.7 and 75.8%, respectively). As seeding rate increased caused a significant increase in period to heading (90 days) and to maturity (138 days), number of spikes/m2 (522.1 spikes /m2 ) and straw yield (3.5 ton /fed.) and caused a significant decrease in plant height (89.6 cm), number of grains/spike (56.6 grains/spike), 1000-grain weight (42.9 g), grain yield (15.5 ardab/fed.) and also decrease in grain crude protein and total carbohydrate percentages (11 and 71.3%,respectively). Seeding rate of 300 grains/m2 was caused a significant increase in plant height (101.4 cm), number of grains /spike (64.8 grains/spike), 1000-grain weight (49.2 g), grain yield (16.2 ardab /fed.) and also caused increase in grain crude protein and total carbohydrate percentages (11.8 and 73.2%,respectively). Increasing nitrogen rate from 75 to 90 Kg /fed caused a significant increase in plant height (97.3 cm), number of spikes /m2 (514.7 spikes /m2 ), number of grains /spike (61.5 grains/spike),1000-grain weight (46.8 g), grain yield (16.2 ardab /fed.), straw yield (3.4 ton /fed.) and also caused increase in grain crude protein and total carbohydrate percentages (11.5 and 72.6%,respectively). For insect infestation, results revealed that Beni-Sweif 4 and Sids 12 cultivars were significantly effective in decreasing number of cereal aphids (62.1 and 83.3 aphids /10 plants, respectively). On the other hand, Beni-Sweif 4 and Beni-Sweif 5 showed the least number of leafminer (2.4 and 3.4 mines & 1.5 and 2.2 larvae /100 leaves, respectively). Increasing seeding rate from 300 grains/m2 to 400 grains /m2 caused a significant increase in number of cereal aphids (159.5 aphids /10 plants) and leafminer (9.2 mines and 6.7 larvae /100 leaves). The least number of cereal aphids (82.1 aphids /10 plants) and leafminer (3.7 mines and 2.5 larvae /100 leaves) were obtained at a seeding rate of 300 grains /m2. Increasing nitrogen rate from 75 to 90 Kg /fed caused a significant increase in number of cereal aphids (133.3 aphids /10 plants) and leafminer (7.9 mines and 5.6 larvae /100 leaves). From these results, it could be concluded that sowing Sids 12 cultivar (bread wheat) or Beni-Sweif 4 cultivar (durum wheat) under seeding rate of 300 grains/m2 and applying 90 KgN/fed gave the highest grain yield/fed and least infestation by cereal aphids and leafminer.

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Claims 20

Observationobservedoriginal resultmeasured

Claim · model-written summary

Beni-Sweif 4 had longer period to heading, 89.5 days.

Material
Beni-Sweif 4e0
Outcome
period to headinge0
Direction
longere0
Value
89.5 dayse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Results indicated that Beni-Sweif 4 cultivar exhibited longer period to heading (89.5 days) and to maturity (140.5 days).”

✓ located verbatim in the source · abstract, characters 611–732 · show in text ↑
t0

“WHEAT”

✓ located verbatim in the source · title, characters 99–104 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Beni-Sweif 4 had longer to maturity, 140.5 days.

Material
Beni-Sweif 4e0
Outcome
to maturitye0
Direction
longere0
Value
140.5 dayse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Results indicated that Beni-Sweif 4 cultivar exhibited longer period to heading (89.5 days) and to maturity (140.5 days).”

✓ located verbatim in the source · abstract, characters 611–732 · show in text ↑
t0

“WHEAT”

✓ located verbatim in the source · title, characters 99–104 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Beni-Sweif 5 had the tallest plants at 101.2 cm.

Material
Beni-Sweif 5e0
Outcome
taller plantse0
Direction
tallere0
Value
101.2 cme0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“On the other hand, Beni-Sweif 5 exhibited taller plants (101.2 cm) followed by Beni-Sweif 4 (99.9 cm) and Sids 12 (97.5 cm).”

✓ located verbatim in the source · abstract, characters 733–857 · show in text ↑
t0

“WHEAT”

✓ located verbatim in the source · title, characters 99–104 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Beni-Sweif 5 had more spikes, 518.5 spikes/ m2.

Material
Beni-Sweif 5e0
Outcome
spikese0
Direction
moree0
Value
518.5e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“While Beni-Sweif 5 and Sids 12 cultivars gave more spikes (518.5 and 516.1 spikes/ m2, respectively), but highest number of grains /spike was shown by Beni-Sweif 5 and Beni-Sweif 4 (67.4 and 66.0 grains/spike, respectively).”

✓ located verbatim in the source · abstract, characters 858–1082 · show in text ↑
t0

“WHEAT”

✓ located verbatim in the source · title, characters 99–104 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Sids 12 had more spikes, 516.1 spikes/ m2.

Material
Sids 12e0
Outcome
spikese0
Direction
moree0
Value
516.1 spikes/ m2e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“While Beni-Sweif 5 and Sids 12 cultivars gave more spikes (518.5 and 516.1 spikes/ m2, respectively), but highest number of grains /spike was shown by Beni-Sweif 5 and Beni-Sweif 4 (67.4 and 66.0 grains/spike, respectively).”

✓ located verbatim in the source · abstract, characters 858–1082 · show in text ↑
t0

“WHEAT”

✓ located verbatim in the source · title, characters 99–104 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Beni-Sweif 5 had the highest grain count per spike, 67.4.

Material
Beni-Sweif 5e0
Outcome
number of grains /spikee0
Direction
higheste0
Value
67.4e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“While Beni-Sweif 5 and Sids 12 cultivars gave more spikes (518.5 and 516.1 spikes/ m2, respectively), but highest number of grains /spike was shown by Beni-Sweif 5 and Beni-Sweif 4 (67.4 and 66.0 grains/spike, respectively).”

✓ located verbatim in the source · abstract, characters 858–1082 · show in text ↑
t0

“WHEAT”

✓ located verbatim in the source · title, characters 99–104 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Beni-Sweif 4 had high 1000-grain weight of 48.6 g.

Material
Beni-Sweif 4e0
Outcome
1000-grain weighte0
Direction
higheste0
Value
48.6e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The highest values of 1000-grain weight and grain yield were in Beni-Sweif 4 and Sids 12 (48.6 and 48.5 g & 16.2 and 16.3 ardab/fed., respectively).”

✓ located verbatim in the source · abstract, characters 1082–1230 · show in text ↑
t0

“WHEAT”

✓ located verbatim in the source · title, characters 99–104 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Sids 12 had high grain yield of 16.3 ardab/fed.

Material
Sids 12e0
Outcome
grain yielde0
Direction
higheste0
Value
16.3 ardab/fed.e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The highest values of 1000-grain weight and grain yield were in Beni-Sweif 4 and Sids 12 (48.6 and 48.5 g & 16.2 and 16.3 ardab/fed., respectively).”

✓ located verbatim in the source · abstract, characters 1082–1230 · show in text ↑
t0

“WHEAT”

✓ located verbatim in the source · title, characters 99–104 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Higher seeding rate caused a significant increase in period to heading to 90 days.

Treatment
seeding rate increasede0
Outcome
period to headinge0
Direction
increasee0
Value
90 dayse0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“As seeding rate increased caused a significant increase in period to heading (90 days) and to maturity (138 days), number of spikes/m2 (522.1 spikes /m2 ) and straw yield (3.5 ton /fed.) and caused a significant decrease in plant height (89.6 cm), number of grains/spike (56.6 grains/spike), 1000-grain weight (42.9 g), grain yield (15.5 ardab/fed.) and also decrease in grain crude protein and total carbohydrate percentages (11 and 71.3%,respectively).”

✓ located verbatim in the source · abstract, characters 1494–1948 · show in text ↑
t0

“WHEAT”

✓ located verbatim in the source · title, characters 99–104 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Higher seeding rate caused a significant increase in to maturity to 138 days.

Treatment
seeding rate increasede0
Outcome
to maturitye0
Direction
increasee0
Value
138 dayse0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“As seeding rate increased caused a significant increase in period to heading (90 days) and to maturity (138 days), number of spikes/m2 (522.1 spikes /m2 ) and straw yield (3.5 ton /fed.) and caused a significant decrease in plant height (89.6 cm), number of grains/spike (56.6 grains/spike), 1000-grain weight (42.9 g), grain yield (15.5 ardab/fed.) and also decrease in grain crude protein and total carbohydrate percentages (11 and 71.3%,respectively).”

✓ located verbatim in the source · abstract, characters 1494–1948 · show in text ↑
t0

“WHEAT”

✓ located verbatim in the source · title, characters 99–104 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Higher seeding rate caused a significant increase in number of spikes/m2 to 522.1 spikes /m2.

Treatment
seeding rate increasede0
Outcome
number of spikes/m2e0
Direction
increasee0
Value
522.1 spikes /m2e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“As seeding rate increased caused a significant increase in period to heading (90 days) and to maturity (138 days), number of spikes/m2 (522.1 spikes /m2 ) and straw yield (3.5 ton /fed.) and caused a significant decrease in plant height (89.6 cm), number of grains/spike (56.6 grains/spike), 1000-grain weight (42.9 g), grain yield (15.5 ardab/fed.) and also decrease in grain crude protein and total carbohydrate percentages (11 and 71.3%,respectively).”

✓ located verbatim in the source · abstract, characters 1494–1948 · show in text ↑
t0

“WHEAT”

✓ located verbatim in the source · title, characters 99–104 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Higher seeding rate caused a significant increase in straw yield to 3.5 ton /fed..

Treatment
seeding rate increasede0
Outcome
straw yielde0
Direction
increasee0
Value
3.5 ton /fed.e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“As seeding rate increased caused a significant increase in period to heading (90 days) and to maturity (138 days), number of spikes/m2 (522.1 spikes /m2 ) and straw yield (3.5 ton /fed.) and caused a significant decrease in plant height (89.6 cm), number of grains/spike (56.6 grains/spike), 1000-grain weight (42.9 g), grain yield (15.5 ardab/fed.) and also decrease in grain crude protein and total carbohydrate percentages (11 and 71.3%,respectively).”

✓ located verbatim in the source · abstract, characters 1494–1948 · show in text ↑
t0

“WHEAT”

✓ located verbatim in the source · title, characters 99–104 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Higher seeding rate caused a significant decrease in plant height to 89.6 cm.

Treatment
seeding rate increasede0
Outcome
plant heighte0
Direction
decreasee0
Value
89.6 cme0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“As seeding rate increased caused a significant increase in period to heading (90 days) and to maturity (138 days), number of spikes/m2 (522.1 spikes /m2 ) and straw yield (3.5 ton /fed.) and caused a significant decrease in plant height (89.6 cm), number of grains/spike (56.6 grains/spike), 1000-grain weight (42.9 g), grain yield (15.5 ardab/fed.) and also decrease in grain crude protein and total carbohydrate percentages (11 and 71.3%,respectively).”

✓ located verbatim in the source · abstract, characters 1494–1948 · show in text ↑
t0

“WHEAT”

✓ located verbatim in the source · title, characters 99–104 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Higher seeding rate caused a significant decrease in number of grains/spike to 56.6 grains/spike.

Treatment
seeding rate increasede0
Outcome
number of grains/spikee0
Direction
decreasee0
Value
56.6 grains/spikee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“As seeding rate increased caused a significant increase in period to heading (90 days) and to maturity (138 days), number of spikes/m2 (522.1 spikes /m2 ) and straw yield (3.5 ton /fed.) and caused a significant decrease in plant height (89.6 cm), number of grains/spike (56.6 grains/spike), 1000-grain weight (42.9 g), grain yield (15.5 ardab/fed.) and also decrease in grain crude protein and total carbohydrate percentages (11 and 71.3%,respectively).”

✓ located verbatim in the source · abstract, characters 1494–1948 · show in text ↑
t0

“WHEAT”

✓ located verbatim in the source · title, characters 99–104 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Higher seeding rate caused a significant decrease in 1000-grain weight to 42.9 g.

Treatment
seeding rate increasede0
Outcome
1000-grain weighte0
Direction
decreasee0
Value
42.9 ge0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“As seeding rate increased caused a significant increase in period to heading (90 days) and to maturity (138 days), number of spikes/m2 (522.1 spikes /m2 ) and straw yield (3.5 ton /fed.) and caused a significant decrease in plant height (89.6 cm), number of grains/spike (56.6 grains/spike), 1000-grain weight (42.9 g), grain yield (15.5 ardab/fed.) and also decrease in grain crude protein and total carbohydrate percentages (11 and 71.3%,respectively).”

✓ located verbatim in the source · abstract, characters 1494–1948 · show in text ↑
t0

“WHEAT”

✓ located verbatim in the source · title, characters 99–104 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Higher seeding rate caused a significant decrease in grain yield to 15.5 ardab/fed..

Treatment
seeding rate increasede0
Outcome
grain yielde0
Direction
decreasee0
Value
15.5 ardab/fed.e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“As seeding rate increased caused a significant increase in period to heading (90 days) and to maturity (138 days), number of spikes/m2 (522.1 spikes /m2 ) and straw yield (3.5 ton /fed.) and caused a significant decrease in plant height (89.6 cm), number of grains/spike (56.6 grains/spike), 1000-grain weight (42.9 g), grain yield (15.5 ardab/fed.) and also decrease in grain crude protein and total carbohydrate percentages (11 and 71.3%,respectively).”

✓ located verbatim in the source · abstract, characters 1494–1948 · show in text ↑
t0

“WHEAT”

✓ located verbatim in the source · title, characters 99–104 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Higher seeding rate caused a significant decrease in grain crude protein to 11.

Treatment
seeding rate increasede0
Outcome
grain crude proteine0
Direction
decreasee0
Value
11e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“As seeding rate increased caused a significant increase in period to heading (90 days) and to maturity (138 days), number of spikes/m2 (522.1 spikes /m2 ) and straw yield (3.5 ton /fed.) and caused a significant decrease in plant height (89.6 cm), number of grains/spike (56.6 grains/spike), 1000-grain weight (42.9 g), grain yield (15.5 ardab/fed.) and also decrease in grain crude protein and total carbohydrate percentages (11 and 71.3%,respectively).”

✓ located verbatim in the source · abstract, characters 1494–1948 · show in text ↑
t0

“WHEAT”

✓ located verbatim in the source · title, characters 99–104 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Higher seeding rate caused a significant decrease in total carbohydrate percentages to 71.3%.

Treatment
seeding rate increasede0
Outcome
total carbohydrate percentagese0
Direction
decreasee0
Value
71.3%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“As seeding rate increased caused a significant increase in period to heading (90 days) and to maturity (138 days), number of spikes/m2 (522.1 spikes /m2 ) and straw yield (3.5 ton /fed.) and caused a significant decrease in plant height (89.6 cm), number of grains/spike (56.6 grains/spike), 1000-grain weight (42.9 g), grain yield (15.5 ardab/fed.) and also decrease in grain crude protein and total carbohydrate percentages (11 and 71.3%,respectively).”

✓ located verbatim in the source · abstract, characters 1494–1948 · show in text ↑
t0

“WHEAT”

✓ located verbatim in the source · title, characters 99–104 · show in text ↑
Observationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Beni-Sweif 4 reduced cereal aphid counts to 62.1 per ten plants.

Material
Beni-Sweif 4e0
Interactor
cereal aphidse0pest
Outcome
number of cereal aphidse0
Direction
decreasinge0
Value
62.1e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“For insect infestation, results revealed that Beni-Sweif 4 and Sids 12 cultivars were significantly effective in decreasing number of cereal aphids (62.1 and 83.3 aphids /10 plants, respectively).”

✓ located verbatim in the source · abstract, characters 2651–2847 · show in text ↑
t0

“WHEAT”

✓ located verbatim in the source · title, characters 99–104 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors recommended Sids 12 or Beni-Sweif 4 at 300 grains/m2 and 90 KgN/fed for yield and low infestation.

Treatment
seeding rate of 300 grains/m2 and applying 90 KgN/fede0
Outcome
highest grain yield/fed and least infestation by cereal aphids and leafminere0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“From these results, it could be concluded that sowing Sids 12 cultivar (bread wheat) or Beni-Sweif 4 cultivar (durum wheat) under seeding rate of 300 grains/m2 and applying 90 KgN/fed gave the highest grain yield/fed and least infestation by cereal aphids and leafminer.”

✓ located verbatim in the source · abstract, characters 3547–3817 · show in text ↑

density · phenology · Triticum aestivum (wheat)Positive and negative results

4 papers: 3 positive, 1 negative or no effect

2 papers in the same direction as this paper · 1 in the opposite direction

  1. negative
  2. positive
  3. positive
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density · quality: sugar starch · Triticum aestivum (wheat)Positive and negative results

5 papers: 4 positive, 1 negative or no effect

4 in the opposite direction

  1. positive
  2. positive
  3. positive

1 paper more in this group

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density · quality: protein · Triticum aestivum (wheat)Positive and negative results

35 papers: 19 positive, 16 negative or no effect

15 papers in the same direction as this paper · 19 in the opposite direction

  1. positive
  2. positive
  3. positive

31 papers more in this group

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density · growth · Triticum aestivum (wheat)Positive and negative results

110 papers: 81 positive, 29 negative or no effect

28 papers in the same direction as this paper · 81 in the opposite direction

  1. positive
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106 papers more in this group

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density · yield · Triticum aestivum (wheat)Positive and negative results

498 papers: 376 positive, 122 negative or no effect

375 papers in the same direction as this paper · 115 in the opposite direction · 7 reporting no difference from an alternative

  1. no effect
  2. no effect
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494 papers more in this group

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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.