Paper · 2010 · Northern Horticulture

Effect of N Application Rate on Soil Enzyme Activities,Physiological Activities and Yield of Tomato

Xiaojuan Zhang

13
claims
26
verbatim quotes
1
citations
2
research areas
—
Not open access

Abstract

Soil and plant enzyme activities,as well as yield of tomato were adopted to evaluate the influence of Nitrogen over application on soil and tomato.The results showed that N application significantly effects soil enzyme activities except soil catalase.Invertase activity was significantly decreased along with increased N application rate.Phosphatase and urease activity were increased under low N application rate,yet severe restrained under high amount of N application(600 kg/hm2).The inner protective enzyme system was sensitive to N application.Reasonable N application rate stimulate catalase of tomato.High rate of N application(600 kg/hm2) severe restrict SOD,CAT and POD activities,but significantly promote Pro activity.Tomato yield was significantly effected by N application.The maximum N application rate for the highest yield of tomato was 479.41 kg/hm2.The reasonable application rate for the highest profit yield of tomato was 364.71 kg/hm2.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 13

Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Increasing N application decreased soil invertase activity.

Treatment
increased N application ratee0
Outcome
Invertase activitye0
Direction
decreasede0

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Invertase activity was significantly decreased along with increased N application rate.”

✓ located verbatim in the source · abstract, characters 251–338 · show in text ↑
t0

“tomato”

✓ located after whitespace/quote normalisation · title, characters 93–99 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Low N increased Phosphatase activity.

Treatment
low N application ratee0
Outcome
Phosphatasee0
Direction
increasede0

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Phosphatase and urease activity were increased under low N application rate”

✓ located verbatim in the source · abstract, characters 338–413 · show in text ↑
t0

“tomato”

✓ located after whitespace/quote normalisation · title, characters 93–99 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Low N increased urease activity.

Treatment
low N application ratee0
Outcome
ureasee0
Direction
increasede0

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Phosphatase and urease activity were increased under low N application rate”

✓ located verbatim in the source · abstract, characters 338–413 · show in text ↑
t0

“tomato”

✓ located after whitespace/quote normalisation · title, characters 93–99 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

High N restricted Phosphatase activity.

Treatment
high amount of N application(600 kg/hm2)e0
Outcome
Phosphatasee0
Direction
restrainede0

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Phosphatase and urease activity were increased under low N application rate,yet severe restrained under high amount of N application(600 kg/hm2)”

✓ located verbatim in the source · abstract, characters 338–482 · show in text ↑
t0

“tomato”

✓ located after whitespace/quote normalisation · title, characters 93–99 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

High N restricted urease activity.

Treatment
high amount of N application(600 kg/hm2)e0
Outcome
ureasee0
Direction
restrainede0

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Phosphatase and urease activity were increased under low N application rate,yet severe restrained under high amount of N application(600 kg/hm2)”

✓ located verbatim in the source · abstract, characters 338–482 · show in text ↑
t0

“tomato”

✓ located after whitespace/quote normalisation · title, characters 93–99 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Reasonable N application stimulated tomato catalase.

Treatment
Reasonable N application ratee0
Outcome
catalasee0
Direction
stimulatee0

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Reasonable N application rate stimulate catalase of tomato.”

✓ located verbatim in the source · abstract, characters 549–608 · show in text ↑
t0

“tomato”

✓ located after whitespace/quote normalisation · title, characters 93–99 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

High N restricted tomato SOD activity.

Treatment
High rate of N application(600 kg/hm2)e0
Outcome
SODe0
Direction
restricte0

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“High rate of N application(600 kg/hm2) severe restrict SOD,CAT and POD activities”

✓ located verbatim in the source · abstract, characters 608–689 · show in text ↑
t0

“tomato”

✓ located after whitespace/quote normalisation · title, characters 93–99 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

High N restricted tomato CAT activity.

Treatment
High rate of N application(600 kg/hm2)e0
Outcome
CATe0
Direction
restricte0

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“High rate of N application(600 kg/hm2) severe restrict SOD,CAT and POD activities”

✓ located verbatim in the source · abstract, characters 608–689 · show in text ↑
t0

“tomato”

✓ located after whitespace/quote normalisation · title, characters 93–99 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

High N restricted tomato POD activity.

Treatment
High rate of N application(600 kg/hm2)e0
Outcome
PODe0
Direction
restricte0

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“High rate of N application(600 kg/hm2) severe restrict SOD,CAT and POD activities”

✓ located verbatim in the source · abstract, characters 608–689 · show in text ↑
t0

“tomato”

✓ located after whitespace/quote normalisation · title, characters 93–99 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

High N promoted Pro activity.

Treatment
High rate of N application(600 kg/hm2)e0
Outcome
Pro activitye0
Direction
promotee0

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“High rate of N application(600 kg/hm2) severe restrict SOD,CAT and POD activities,but significantly promote Pro activity.”

✓ located verbatim in the source · abstract, characters 608–729 · show in text ↑
t0

“tomato”

✓ located after whitespace/quote normalisation · title, characters 93–99 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

N application significantly affected tomato yield.

Treatment
N applicatione0
Outcome
Tomato yielde0

Not reportedComparatorDirection

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Tomato yield was significantly effected by N application.”

✓ located verbatim in the source · abstract, characters 729–786 · show in text ↑
t0

“tomato”

✓ located after whitespace/quote normalisation · title, characters 93–99 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The highest tomato yield occurred at an N application rate of 479.41 kg/hm2.

Treatment
N application ratee0
Outcome
yield of tomatoe0
Direction
higheste0
Value
479.41 kg/hm2e0

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The maximum N application rate for the highest yield of tomato was 479.41 kg/hm2.”

✓ located verbatim in the source · abstract, characters 786–867 · show in text ↑
t0

“tomato”

✓ located after whitespace/quote normalisation · title, characters 93–99 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The rate for highest profit yield was 364.71 kg/hm2.

Treatment
application ratee0
Outcome
profit yield of tomatoe0
Direction
higheste0
Value
364.71 kg/hm2e0

Not reportedComparator

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The reasonable application rate for the highest profit yield of tomato was 364.71 kg/hm2.”

✓ located verbatim in the source · abstract, characters 867–956 · show in text ↑
t0

“tomato”

✓ located after whitespace/quote normalisation · title, characters 93–99 · show in text ↑

nitrogen · physiology: antioxidant enzymes · Solanum lycopersicum (tomato)Positive and negative results

5 papers: 3 positive, 2 negative or no effect

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

  1. no effect
  2. negative
  3. positive

1 paper more in this group

See all 5 papers →

nitrogen · yield · Solanum lycopersicum (tomato)Positive and negative results

210 papers: 172 positive, 38 negative or no effect

171 papers in the same direction as this paper · 31 in the opposite direction · 7 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

206 papers more in this group

See all 210 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.