Paper · 2004 · Zbornik Matice srpske za prirodne nauke

The soil proteolytic activity and organic production of corn under the conditions of applying different nutrition systems

Leka Mandic; Dragutin Djukic; Vladeta Stevovic

7
claims
11
verbatim quotes
0
citations
2
research areas
✓
Open access · cc-by-nc-nd

Abstract

The effects of increasing amounts of mineral nitrogen (90, 120, 150 kg?ha-1) liquid (80 t?ha-1) and solid manure (45 t?ha-1) those of inoculation with Azotobacter chroococcum (the strain 84) on the soil proteolytic activity and corn yield grown in monoculture were surveyed over the 3-year-long research work. The research results indicated that proteolytic activity and corn yield depended highly on the fertiliser sorts, amounts and on the research year too. Over the first research year, the highest proteolytic activity was recorded on the variants with organic fertilisers, whereas the fertiliser stimulating effect markedly decreased, particularly with liquid manure over the following two years of the research. Mineral fertilisers were also found to remarkably stimulate the biological parameters we have been concerned above, particularly the mean N amount (120 kg ? ha-1). While the highest corn yield could be obtained using 120 kg N ? ha-1 throughout all the research years, its insignificant rise and barely altered soil proteolytic activity using corn seed inoculation with 84 Azotobacter chroococcum could be noticed.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. 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 7

Associationobservedoriginal resultmeasured

Claim · model-written summary

Corn yield depended on fertilizer kind, amount and year.

Treatment
fertiliser sorts, amountse0
Outcome
corn yielde0

Not reportedDirection

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 research results indicated that proteolytic activity and corn yield depended highly on the fertiliser sorts, amounts and on the research year too.”

✓ located verbatim in the source · abstract, characters 310–460 · show in text ↑
t0

“corn”

✓ located verbatim in the source · title, characters 56–60 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Soil proteolytic activity was highest with organic fertilizers in the first year.

Treatment
organic fertiliserse0
Outcome
proteolytic activitye0
Direction
higheste0
Qualifier
first research yeare0

Not reportedTaxonComparator

Verbatim

e0

“Over the first research year, the highest proteolytic activity was recorded on the variants with organic fertilisers, whereas the fertiliser stimulating effect markedly decreased, particularly with liquid manure over the following two years of the research.”

✓ located verbatim in the source · abstract, characters 461–718 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The stimulation of soil proteolytic activity by liquid manure declined over the next two years.

Treatment
liquid manuree0
Outcome
fertiliser stimulating effecte0
Direction
decreasede0
Qualifier
following two yearse0

Not reportedTaxon

Verbatim

e0

“Over the first research year, the highest proteolytic activity was recorded on the variants with organic fertilisers, whereas the fertiliser stimulating effect markedly decreased, particularly with liquid manure over the following two years of the research.”

✓ located verbatim in the source · abstract, characters 461–718 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mineral fertilizers stimulated the reported biological parameters, particularly at 120 kg N per hectare.

Treatment
120 kg ? ha-1e0
Outcome
biological parameterse0
Direction
stimulatee0

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

“Mineral fertilisers were also found to remarkably stimulate the biological parameters we have been concerned above, particularly the mean N amount (120 kg ? ha-1).”

✓ located verbatim in the source · abstract, characters 719–882 · show in text ↑
t0

“corn”

✓ located verbatim in the source · title, characters 56–60 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Corn yield was highest with 120 kg N per hectare across all years.

Treatment
120 kg N ? ha-1e0
Outcome
corn yielde0
Direction
higheste0

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

“While the highest corn yield could be obtained using 120 kg N ? ha-1 throughout all the research years, its insignificant rise and barely altered soil proteolytic activity using corn seed inoculation with 84 Azotobacter chroococcum could be noticed.”

✓ located verbatim in the source · abstract, characters 883–1132 · show in text ↑
t0

“corn”

✓ located verbatim in the source · title, characters 56–60 · show in text ↑
Intervention effectobservedoriginal resultpositivenot significant (as stated)measured

Claim · model-written summary

Azotobacter seed inoculation gave an insignificant increase in corn yield.

Treatment
corn seed inoculation with 84 Azotobacter chroococcume0
Interactor
Azotobacter chroococcumAzotobacter chroococcume0symbiont
Outcome
corn yielde0
Direction
risee0

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

“While the highest corn yield could be obtained using 120 kg N ? ha-1 throughout all the research years, its insignificant rise and barely altered soil proteolytic activity using corn seed inoculation with 84 Azotobacter chroococcum could be noticed.”

✓ located verbatim in the source · abstract, characters 883–1132 · show in text ↑
t0

“corn”

✓ located verbatim in the source · title, characters 56–60 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Azotobacter seed inoculation barely changed soil proteolytic activity.

Treatment
corn seed inoculation with 84 Azotobacter chroococcume0
Interactor
Azotobacter chroococcumAzotobacter chroococcume0symbiont
Outcome
soil proteolytic activitye0
Direction
barely alterede0

Not reportedTaxonComparator

Verbatim

e0

“While the highest corn yield could be obtained using 120 kg N ? ha-1 throughout all the research years, its insignificant rise and barely altered soil proteolytic activity using corn seed inoculation with 84 Azotobacter chroococcum could be noticed.”

✓ located verbatim in the source · abstract, characters 883–1132 · show in text ↑

Zea mays subsp. mays · yield · Zea mays (maize)Results differ

292 papers: 196 positive, 96 negative or no effect

195 papers in the same direction as this paper · 85 in the opposite direction · 11 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. negative

288 papers more in this group

See all 292 papers →

Azotobacter chroococcum · yield · Zea mays (maize)Results agree

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

1 paper more in this group

See all 5 papers →

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

538 papers: 479 positive, 59 negative or no effect

478 papers in the same direction as this paper · 52 in the opposite direction · 7 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. negative

534 papers more in this group

See all 538 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.