Paper · 1980 · Canadian Journal of Plant Science

THE EFFECT OF THE NITRIFICATION INHIBITOR NITRAPYRIN ON YIELD AND ON NITROGEN FRACTIONS IN SOIL AND TISSUE OF CORN (ZEA MAYS L.) GROWN IN THE ANNAPOLIS VALLEY OF NOVA SCOTIA

L. R. TOWNSEND; K. B. McRAE

7
claims
13
verbatim quotes
6
citations
2
research areas
—
Not open access

Abstract

The application of fertilizer (10-10-10) treated with the nitrification inhibitor nitrapyrin [2-chloro-6-(trichloromethyl) pyridine] was generally not effective in increasing the yields of grain corn, although at one location the addition of stabilized fertilizer increased the yield (P = 0.25) by 660 kg/ha over that from plots receiving non-stabilized N fertilizer. Nitrapyrin did not affect the levels of the N fractions in corn tissue but it did inhibit nitrification of soil NH 4 -N. As might be expected, the addition of fertilizer and increasing fertilizer rates increased yields and levels of N in tissue and soil.

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Claims 7

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Nitrapyrin-treated fertilizer generally did not increase grain corn yield over unstabilized fertilizer.

Taxon
grain corne0
Treatment
fertilizer (10-10-10) treated with the nitrification inhibitor nitrapyrine0
Outcome
yields of grain corne0
Direction
not effective in increasinge0

Not reportedComparator

Verbatim

e0

“The application of fertilizer (10-10-10) treated with the nitrification inhibitor nitrapyrin [2-chloro-6-(trichloromethyl) pyridine] was generally not effective in increasing the yields of grain corn”

✓ located verbatim in the source · abstract, characters 0–199 · show in text ↑
Intervention effectobservedoriginal resultpositivenot significant (as stated)measured

Claim · model-written summary

At one location stabilized fertilizer increased corn yield by 660 kg/ha over non-stabilized nitrogen fertilizer.

Treatment
stabilized fertilizere0
Outcome
yielde0
Direction
increasede0
Value
660 kg/hae0
Qualifier
at one locatione0
Comparator
non-stabilized N fertilizere0

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“at one location the addition of stabilized fertilizer increased the yield (P = 0.25) by 660 kg/ha over that from plots receiving non-stabilized N fertilizer”

✓ located verbatim in the source · abstract, characters 210–366 · show in text ↑
t0

“CORN (ZEA MAYS L.)”

✓ located verbatim in the source · title, characters 110–128 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Nitrapyrin did not change nitrogen fraction levels in corn tissue.

Treatment
Nitrapyrine0
Outcome
levels of the N fractions in corn tissuee0
Direction
did not affecte0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Nitrapyrin did not affect the levels of the N fractions in corn tissue”

✓ located verbatim in the source · abstract, characters 368–438 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Added fertilizer increased corn yields.

Treatment
addition of fertilizer and increasing fertilizer ratese0
Outcome
yieldse0
Direction
increasede0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“the addition of fertilizer and increasing fertilizer rates increased yields and levels of N in tissue and soil”

✓ located verbatim in the source · abstract, characters 511–621 · show in text ↑
t0

“CORN”

✓ located verbatim in the source · title, characters 110–114 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Higher fertilizer rates increased nitrogen levels in corn tissue.

Treatment
increasing fertilizer ratese0
Outcome
levels of N in tissuee0
Direction
increasede0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“the addition of fertilizer and increasing fertilizer rates increased yields and levels of N in tissue and soil”

✓ located verbatim in the source · abstract, characters 511–621 · show in text ↑
t0

“CORN”

✓ located verbatim in the source · title, characters 110–114 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Higher fertilizer rates increased soil nitrogen levels.

Treatment
increasing fertilizer ratese0
Outcome
levels of N in tissue and soile0
Direction
increasede0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“the addition of fertilizer and increasing fertilizer rates increased yields and levels of N in tissue and soil”

✓ located verbatim in the source · abstract, characters 511–621 · show in text ↑
t0

“CORN”

✓ located verbatim in the source · title, characters 110–114 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Nitrapyrin inhibited soil ammonium nitrification.

Treatment
Nitrapyrine1
Outcome
nitrification of soil NH 4 -Ne0
Direction
inhibite0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“it did inhibit nitrification of soil NH 4 -N”

✓ located verbatim in the source · abstract, characters 443–487 · show in text ↑
e1

“Nitrapyrin did not affect”

✓ located verbatim in the source · abstract, characters 368–393 · show in text ↑
t0

“CORN”

✓ located verbatim in the source · title, characters 110–114 · show in text ↑

nitrapyrin · yield · Zea mays (maize)Results differ

43 papers: 34 positive, 9 negative or no effect

8 papers in the same direction as this paper · 34 in the opposite direction

  1. positive
  2. positive
  3. positive

39 papers more in this group

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nitrification inhibitor · yield · Zea mays (maize)Positive and negative results

40 papers: 31 positive, 9 negative or no effect

8 papers in the same direction as this paper · 31 in the opposite direction

  1. positive
  2. positive
  3. positive

36 papers more in this group

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fertilization · yield · Zea mays (maize)Positive and negative results

3,908 papers: 3,485 positive, 423 negative or no effect

3,484 papers in the same direction as this paper · 338 in the opposite direction · 85 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative

3,904 papers more in this group

See all 3,908 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.