Search claims · PlantClaims

Associationobservedoriginal resultmixedmeasured

Claim · model-written summary

nitrogen use efficiency first rose then fell with nitrogen fertilizer application.

Taxon: RiceOryza sativat0
Treatment: nitrogen fertilizer applicatione0
Outcome: nitrogen use efficiencye0
Direction: increasing then decreasinge0

Verbatim

e0
“Rice yield and nitrogen use efficiency both showed a trend of increasing then decreasing with nitrogen fertilizer application”
✓ located verbatim in the source · abstract, characters 1546–1671

t0
“on Rice Yield”
✓ located verbatim in the source · title, characters 47–60

Title

Effect of Irrigation and Fertilizer Management on Rice Yield and Nitrogen Loss: A Meta-Analysis

Haonan Qiu; Shihong Yang; Zewei Jiang; et al. Plants 2022. doi:10.3390/plants11131690

Other claims from this paper (16)

Intervention effect Alternate wet and dry irrigation increased rice yield by an average 2.57%.
Intervention effect controlled irrigation changed rice yield.
Intervention effect dry cultivation changed rice yield.
Intervention effect Water-saving irrigation reduced nitrogen runoff.
Intervention effect Water-saving irrigation reduced leaching losses from rice fields.
Intervention effect Water-saving irrigation increased N2O emissions.
Intervention effect Alternate wet and dry irrigation increased N2O emissions by an average 67.77%.
Intervention effect water-saving irrigation increased nitrogen use efficiency.
Intervention effect controlled irrigation increased nitrogen use efficiency.
Association Rice yield first rose then fell with nitrogen fertilizer application.
Association Nitrogen loss increased with nitrogen fertilizer input.
Intervention effect Water–nitrogen coupling management changed nitrogen loss in rice fields.
Intervention effect Water–nitrogen coupling management changed water.
Intervention effect Water–nitrogen coupling management changed yield.
Observation Irrigation of 300~350 mm and nitrogen application of 200~250 kg/ha produced high rice yield.
Observation Irrigation of 300~350 mm and nitrogen application of 200~250 kg/ha produced high nitrogen fertilizer use efficiency.

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Nitrogen rate and timing caused some differences in soil and plant recovery of labeled fertilizer.

Taxon: WheatTriticum aestivumt0
Treatment: Fertilizer nitrogen rate and timinge0
Outcome: recovery of labeled fertilizere0

Not reportedComparatorDirection

Verbatim

e0
“Fertilizer nitrogen rate and timing resulted in some differences in recovery of labeled fertilizer in the soil and plant”
✓ located verbatim in the source · abstract, characters 560–680

t0
“Nitrogen Fertilizer Movement in the Soil as Influenced by Nitrogen Rate and Timing in Wheat Production, 1991”
✓ located verbatim in the source · title, characters 0–108

Title

Nitrogen Fertilizer Movement in the Soil as Influenced by Nitrogen Rate and Timing in Wheat Production, 1991

Michael J. Ottman; N. Vigorito UA Campus Repository (The University of Arizona) 1994

Other claims from this paper (5)

Association Crop water use increased with nitrogen rate due to vegetative growth.
Association Excess water applied increased as nitrogen rate decreased.
Observation Soil bromide suggested a maximum potential leaching depth of 3 to 6 feet.
Observation Most fertilizer was recovered in the top 2 to 3 feet of soil.
Intervention effect Nitrogen rate and timing did not significantly alter fertilizer nitrogen leaching depth.

Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Nitrogen fertilizer had an obvious effect on tobacco leaf nitrogen, potassium and calcium content.

Taxon: tobaccoNicotiana tabacume0
Treatment: nitrogen fertilizere0
Outcome: nitrogen,potassium and calcium content of tobacco leafe0

Not reportedComparatorDirection

Verbatim

e0
“nitrogen fertilizer has obvious effect on the accumulation nitrogen,potassium and calcium content of tobacco leaf”
✓ located verbatim in the source · abstract, characters 1020–1133

Title

Influence of different N,P and K fertilizer rates based on "3415" design on the chemical components in tobacco

Guofeng Wang He'nan nongye daxue xuebao 2013

Other claims from this paper (7)

Intervention effect Phosphorus up to 112.5 kg per hectare had no obvious effect on tobacco calcium absorption.
Intervention effect Phosphorus above 112.5 kg per hectare inhibited tobacco calcium absorption.
Intervention effect Potassium through 270 kg per hectare promoted nitrogen accumulation in tobacco leaves.
Intervention effect Potassium above 270 kg per hectare restrained tobacco leaf nitrogen accumulation.
Intervention effect Nitrogen through 112.5 kg per hectare had no obvious effect on total and reducing sugar accumulation.
Intervention effect Nitrogen above 112.5 kg per hectare reduced total and reducing sugar accumulation.
Intervention effect P and K fertilizer application affected leaf carbohydrate accumulation.

Associationobservedoriginal resultmixedmeasured

Claim · model-written summary

Biomass first increased and then decreased as nitrogen fertilizer increased.

Taxon: MaizeZea mayst0
Treatment: nitrogen fertilizere0
Outcome: biomasse0
Direction: increased first and then decreasede0

Verbatim

e0
“With the increase of nitrogen fertilizer,the biomass increased first and then decreased”
✓ located verbatim in the source · abstract, characters 691–778

t0
“Maize”
✓ located verbatim in the source · title, characters 67–72

Title

Effect of Amount of Nitrogen Fertilizer on Growth and Water Use of Maize under Shajiang Black Soil

Yang Yong-hu 2013

Other claims from this paper (10)

Intervention effect Nitrogen fertilizer improved soil moisture, especially at 360kg/ha.
Intervention effect At 360kg/ha nitrogen, maize leaf number, height and stem diameter exceeded other treatments significantly.
Intervention effect 540kg/ha nitrogen produced maximum biomass, 31.9% above CK.
Intervention effect 90kg/ha nitrogen yielded significantly lower biomass than CK.
Intervention effect 360kg/ha nitrogen yielded significantly lower biomass than CK.
Association Yield rose then fell with increasing nitrogen fertilizer.
Association Water use efficiency rose then fell with increasing nitrogen fertilizer.
Intervention effect 270kg/ha nitrogen produced the highest maize yield.
Intervention effect 360kg/ha nitrogen produced the highest water use efficiency without significant difference from 270kg/ha.
Recommendation Authors recommend 270kg nitrogen fertilizer per hectare.

Associationobservedoriginal resultmixedmeasured

Claim · model-written summary

Rice yield first rose then fell with nitrogen fertilizer application.

Taxon: RiceOryza sativat0
Treatment: nitrogen fertilizer applicatione0
Outcome: Rice yielde0
Direction: increasing then decreasinge0

Verbatim

e0
“Rice yield and nitrogen use efficiency both showed a trend of increasing then decreasing with nitrogen fertilizer application”
✓ located verbatim in the source · abstract, characters 1546–1671

t0
“on Rice Yield”
✓ located verbatim in the source · title, characters 47–60

Title

Effect of Irrigation and Fertilizer Management on Rice Yield and Nitrogen Loss: A Meta-Analysis

Haonan Qiu; Shihong Yang; Zewei Jiang; et al. Plants 2022. doi:10.3390/plants11131690

Other claims from this paper (16)

Intervention effect Alternate wet and dry irrigation increased rice yield by an average 2.57%.
Intervention effect controlled irrigation changed rice yield.
Intervention effect dry cultivation changed rice yield.
Intervention effect Water-saving irrigation reduced nitrogen runoff.
Intervention effect Water-saving irrigation reduced leaching losses from rice fields.
Intervention effect Water-saving irrigation increased N2O emissions.
Intervention effect Alternate wet and dry irrigation increased N2O emissions by an average 67.77%.
Intervention effect water-saving irrigation increased nitrogen use efficiency.
Intervention effect controlled irrigation increased nitrogen use efficiency.
Association nitrogen use efficiency first rose then fell with nitrogen fertilizer application.
Association Nitrogen loss increased with nitrogen fertilizer input.
Intervention effect Water–nitrogen coupling management changed nitrogen loss in rice fields.
Intervention effect Water–nitrogen coupling management changed water.
Intervention effect Water–nitrogen coupling management changed yield.
Observation Irrigation of 300~350 mm and nitrogen application of 200~250 kg/ha produced high rice yield.
Observation Irrigation of 300~350 mm and nitrogen application of 200~250 kg/ha produced high nitrogen fertilizer use efficiency.

Associationobservedoriginal resultmixedmeasured

Claim · model-written summary

The fertilizer nitrogen proportion in roots, stems, buds and terminal buds first increased then decreased with fertilizer rate.

Organ / stage: roots, stems, buds and terminal budse0
Treatment: increase of nitrogen fertilizere0
Outcome: proportion of fertilizer-Ne0
Direction: first increased and then decreasede0

Not reportedTaxon

Verbatim

e0
“with the increase of nitrogen fertilizer, the proportion of fertilizer-N in roots, stems, buds and terminal buds first increased and then decreased”
✓ located verbatim in the source · abstract, characters 448–595

Title

Study on nitrogen balance by use of 15 N-labeled fertilizer in flue-cured tobacco field

Bo-jun Deng; Xiaohou Shao; Lihua Chen; et al. 2013

Other claims from this paper (10)

Intervention effect Nitrogen fertilizer increased tobacco production.
Association Nitrogen fertilizer utilization declined as fertilizer increased.
Observation Nitrogen was distributed mainly in tobacco stems and leaves.
Association Nitrogen in stems and leaves increased with fertilizer rate.
Association The fertilizer nitrogen proportion in leaves generally rose with fertilizer rate.
Observation Nitrogen loss and wastage mainly originated from soil nitrogen as fertilizer rate increased.
Association Increasing nitrogen fertilizer rate aggravated nitrogen loss.
Association Increasing nitrogen fertilizer rate raised the soil nitrogen surplus.
Association Increasing nitrogen fertilizer rate reduced nitrogen recycling.
Recommendation The authors identified T8 at 120 kg/hm2 as the best nitrogen fertilizer rate when yield, quality and nitrogen utilization were considered.

Associationauthor interpretationreview summarymixedbasis n/a

Claim · model-written summary

Soybean yield responses to nitrogen fertilizer management are inconsistent.

Taxon: soybeanGlycine maxt0
Treatment: nitrogen fertilizer managemente0
Outcome: yield responsese0
Direction: inconsistente0

Verbatim

e0
“optimal nitrogen fertilizer management due to inconsistent yield responses”
✓ located verbatim in the source · abstract, characters 444–518

t0
“soybean production”
✓ located verbatim in the source · title, characters 53–71

Title

Current and future agronomic perspectives on rainfed soybean production systems in South Africa

Stephanus J. Haarhoff; Pieter A. Swanepoel Agronomy Journal 2021. doi:10.1002/agj2.20816

Other claims from this paper (6)

Associationobservedoriginal resultmixedmeasured

Claim · model-written summary

Yield rose then fell with increasing nitrogen fertilizer.

Taxon: maizeZea mayse0
Treatment: nitrogen fertilizere0
Outcome: yielde0
Direction: increased first and then reduced graduallye0

Verbatim

e0
“maize yield and water use efficiency increased first and then reduced gradually with the increase of nitrogen fertilizer.”
✓ located verbatim in the source · abstract, characters 1024–1145

Title

Effect of Amount of Nitrogen Fertilizer on Growth and Water Use of Maize under Shajiang Black Soil

Yang Yong-hu 2013

Other claims from this paper (10)

Intervention effect Nitrogen fertilizer improved soil moisture, especially at 360kg/ha.
Intervention effect At 360kg/ha nitrogen, maize leaf number, height and stem diameter exceeded other treatments significantly.
Association Biomass first increased and then decreased as nitrogen fertilizer increased.
Intervention effect 540kg/ha nitrogen produced maximum biomass, 31.9% above CK.
Intervention effect 90kg/ha nitrogen yielded significantly lower biomass than CK.
Intervention effect 360kg/ha nitrogen yielded significantly lower biomass than CK.
Association Water use efficiency rose then fell with increasing nitrogen fertilizer.
Intervention effect 270kg/ha nitrogen produced the highest maize yield.
Intervention effect 360kg/ha nitrogen produced the highest water use efficiency without significant difference from 270kg/ha.
Recommendation Authors recommend 270kg nitrogen fertilizer per hectare.

Associationobservedoriginal resultmixedmeasured

Claim · model-written summary

Nitrogen fertilizer amount affected total barley yield.

Taxon: BarleyHordeum vulgaret0
Treatment: Different amounts of nitrogen fertilizere0
Outcome: total yielde0

Not reportedDirection

Verbatim

e0
“Different amounts of nitrogen fertilizer affected the benefit from ethirimol seed dressings as well as total yield.”
✓ located verbatim in the source · abstract, characters 412–527

t0
“Spring Barley”
✓ located verbatim in the source · title, characters 51–64

Title

The Effect of Ethirimol Seed Dressings on Yield of Spring Barley grown with Different Amounts of Nitrogen Fertilizer 1969–71

J. F. JENKYN; J. R. MOFFATT Plant Pathology 1975. doi:10.1111/j.1365-3059.1975.tb01851.x

Other claims from this paper (3)

Observationobservedoriginal resultmixedmeasured

Claim · model-written summary

Chaff nitrogen was ordered carbamide, mixed fertilizer, then organic fertilizer.

Taxon: winter wheatTriticum aestivume1
Organ / stage: chaffe0
Outcome: total N contentse0

Verbatim

e0
“the total N contents in chaff showed carbamide treatmentmixed fertilizer treatmentorganic fertilizer treatment without exception”
✓ located verbatim in the source · abstract, characters 1642–1770

e1
“whole growth stages of winter wheat showed no significant difference”
✓ located verbatim in the source · abstract, characters 1043–1111

Title

Effect of Different Fertilizer Treatments on Spatial-temporal Variations of Soil Ammonium Nitrogen

Kelei Huang Nongye huanjing kexue xuebao 2008

Other claims from this paper (16)

Observation Soil ammonium was evenly distributed at a given soil depth across fertilizer treatments and stages.
Observation Soil ammonium nitrogen was highest at booting and lowest at jointing across treatments.
Intervention effect Total ammonium nitrogen did not differ significantly among the three treatments across wheat growth stages.
Intervention effect Organic fertilizer gave the greatest variation in soil section ammonium nitrogen, followed by mixed fertilizer and carbamide.
Observation Total shoot nitrogen per wheat column ranked combined fertilizer above carbamide above organic fertilizer.
Intervention effect Mixed fertilizer gave lower nitrogen in wheat leaves, sheaths and stems than carbamide and organic fertilizer.
Intervention effect Mixed fertilizer gave wheat grain nitrogen 1.12 times the carbamide treatment.
Intervention effect Mixed fertilizer gave wheat grain nitrogen 1.26 times the organic fertilizer treatment.
Observation Nitrogen harvest index was 73.09% under carbamide.
Observation Nitrogen harvest index was 70.70% under organic fertilizer.
Observation Nitrogen harvest index was 75.84% under mixed fertilizer.
Intervention effect Mixed fertilizer produced the highest albumin, globulin and gliadin contents among treatments.
Intervention effect Mixed fertilizer produced the highest glutenin content among treatments.
Intervention effect Mixed fertilizer increased wheat yield 6.2% over carbamide.
Intervention effect Mixed fertilizer increased wheat yield 11.3% over organic fertilizer.
Recommendation The authors recommend mixed fertilizer based on yield, quality and ecological benefits.

“nitrogen fertilizer”

Claim types

Direction of the findings

Over time

Claim type

Research area

Polarity

Statistics