Search claims · PlantClaims

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 1∶1 cake fertilizer nitrogen and chemical fertilizer nitrogen mixture improved tobacco leaf quality relative to chemical fertilizer nitrogen.

Taxon: tobaccoNicotiana tabacume0
Treatment: mixture fertilizer(cake fertilizer nitrogen∶chemical fertilizer nitrogen=1∶1)treatmente0
Outcome: quality of tobacco leavese0
Direction: bettere0
Comparator: chemical fertilizer nitrogen treatmente0

Verbatim

e0
“The mixture fertilizer(cake fertilizer nitrogen∶chemical fertilizer nitrogen=1∶1)treatment was better to improve the quality of tobacco leaves compared with chemical fertilizer nitrogen treatment”
✓ located verbatim in the source · abstract, characters 968–1163

Title

The effect of fertilizer on the content of total humic acid C and amino acids

Zhuang Yan 2010

Other claims from this paper (8)

Intervention effect Cake fertilizer increased total humic acid C in tobacco soil.
Intervention effect Cake fertilizer significantly affected acidic hydrolyzable amino acids.
Intervention effect Fertilization increased neutral amino acids by an average of 830 μg/kg.
Intervention effect Fertilization increased basic amino acids by 300 μg/kg.
Intervention effect Fertilization increased acidic amino acids by 80 μg/kg.
Intervention effect Mixed fertilizer increased soil microbial C by 79.88%～97.14% relative to chemical fertilizer alone.
Intervention effect Mixed fertilizer increased soil microbial N by 29.73%～74.96% relative to chemical fertilizer alone.
Association Acidic hydrolyzable amino acids correlated positively with microbial N.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Straw with fertilizer nitrogen greatly reduced fertilizer nitrogen uptake by subsequent crops.

Taxon: cropse0
Treatment: Addition of straw, along with fertilizer nitrogene0
Outcome: uptake of fertilizer nitrogene0
Direction: reducede0

Not reportedComparator

Verbatim

e0
“Addition of straw, along with fertilizer nitrogen, greatly reduced the uptake of fertilizer nitrogen by the succeeding crops”
✓ located verbatim in the source · abstract, characters 580–704

Title

Research with nitrogen fertilizer emphasizes fertilize crop—not crop residue

B. A. Krantz; F Broadbent; W. M. Williams; et al. DOAJ (DOAJ: Directory of Open Access Journals) 1968

Other claims from this paper (6)

Intervention effect Nitrogen application to the crop was more efficient and effective than application to prior residues.
Association Infiltration increase from residues was inversely related to residue nitrogen content.
Intervention effect Low-nitrogen residues had a longer-lasting effect than high-nitrogen residues.
Intervention effect Nitrogen application to barley residue significantly reduced its beneficial infiltration effect.
Observation Fertilizer nitrogen cycling through soil organic matter apparently takes years or decades.
Recommendation Fine shredding and early incorporation of residues into moist soil are recommended to avoid planting interference.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Nitrate nitrogen fertilizer produced higher nitrate nitrogen accumulation than other fertilizer forms.

Taxon: spinachSpinacia oleraceat0
Treatment: nitrate-nitrogen fertilizere0
Outcome: NO(3)-Ne0
Direction: highere0

Not reportedComparator

Verbatim

e0
“nitrate-nitrogen fertilizer produces exclusively higher NO(3)-N”
✓ located verbatim in the source · abstract, characters 829–892

t0
“spinach”
✓ located verbatim in the source · title, characters 70–77

Title

How does nitrogen fertilizer forms, dose and soil Pb pollution affect spinach qualities?

Yanju Liu; Yong‐Guan Zhu; Hui Ding; et al. Research Center for Eco-Environmental Sciences OpenIR (Chinese Academy of Sciences) 2008

Other claims from this paper (12)

Intervention effect Spinach biomass did not differ by nitrogen fertilizer form.
Intervention effect Raising ammonium nitrogen increased spinach biomass.
Intervention effect Raising nitrate nitrogen decreased spinach biomass.
Intervention effect Ammonia nitrogen fertilizer gave the lowest nitrate accumulation in spinach leaves among nitrogen forms.
Intervention effect At low nitrogen level, ammonia nitrogen benefited spinach leaf nitrogen accumulation.
Intervention effect At higher nitrogen level with Pb, ammonia nitrogen had the reverse effect on spinach leaf nitrogen accumulation.
Intervention effect Urea nitrogen facilitated Pb accumulation in spinach roots.
Intervention effect Ammonium nitrogen facilitated Pb accumulation in spinach leaves.
Intervention effect Soil Pb pollution decreased spinach quality.
Intervention effect Nitrate nitrogen fertilizer yielded lower leaf and root Pb than urea and ammonia fertilizer.
Association SPAD values correlated well with spinach leaf nitrate concentration.
Recommendation SPAD could be used to pre-evaluate spinach nitrate concentration and potentially determine harvest time.

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Combined manure and nitrogen fertilizer influenced nitrogen fertilizer use efficiency.

Taxon: winter wheatTriticum aestivume0
Treatment: combined application of organic manure and nitrogen fertilizere0
Outcome: nitrogen fertilizer use efficiencye0

Not reportedComparatorDirection

Verbatim

e0
“the combined application of organic manure and nitrogen fertilizer had influence on biomass grain yield,nitrogen fertilizer use efficiency of winter wheat”
✓ located verbatim in the source · abstract, characters 218–372

Title

Influence of the Combination Application of Commercial Organic Manure and Nitrogen Fertilizer to Winter Wheat Yield and Nitrogen Use Efficiency

Hongting Wang Shanxi nongye kexue 2012

Other claims from this paper (2)

Intervention effect Combined manure and nitrogen fertilizer influenced winter wheat biomass and grain yield.
Observation The combination of 600 kg/hm2 commercial manure and 120 kg/hm2 nitrogen gave a favorable effect.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen fertilizer improved soil mineral nitrogen supply and rice growth compared with no fertilizer.

Taxon: riceOryza sativae0
Treatment: nitrogen fertilizer treatmentse0
Outcome: rice growthe0
Direction: improvede0
Comparator: CKe0

Verbatim

e0
“Compared with CK,nitrogen fertilizer treatments notably improved the supply of soil mineral nitrogen and rice growth.”
✓ located verbatim in the source · abstract, characters 413–530

Title

Effect of combined use of organic and inorganic nitrogen fertilizer on rice yield and nitrogen use efficiency.

Ou YangHong; Yangchun Xu; Qirong Shen Jiangsu nongye xuebao 2009

Other claims from this paper (3)

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Nitrogen fertilizer utilization declined as fertilizer increased.

Outcome: utilization rate of nitrogen fertilizere0
Direction: decreasede0

Not reportedTaxonTreatment

Verbatim

e0
“utilization rate of nitrogen fertilizer was decreased gradually”
✓ located verbatim in the source · abstract, characters 225–288

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 effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Corn nitrogen uptake with vetch and no fertilizer was slightly lower than with vetch and fertilizer.

Taxon: come0
Treatment: hairy vetch-no nitrogen fertilizere0
Outcome: Nitrogen uptakee0
Direction: decreasede0
Comparator: hairy vetch - nitrogen fertilizere0

Verbatim

e0
“Nitrogen uptake of com at plot of hairy vetch-no nitrogen fertilizer slightly decreased than at plot of hairy vetch - nitrogen fertilizer”
✓ located verbatim in the source · abstract, characters 1294–1431

Title

Use of Hairy Vetch Green Manure as Nitrogen Fertilizer for Corn Production

Jong‐Ho Seo; Ho-Jin Lee; Il-Bong Hur; et al. The Korean Journal of Crop Science 2000

Other claims from this paper (15)

Observation Hairy vetch produced 5 ton/ha above-ground dry matter at planting.
Observation Hairy vetch produced a nitrogen yield of 200 kgN/ha at planting.
Association Under winter fallow, corn nitrogen status and yield decreased as fertilizer nitrogen was reduced.
Association Under hairy vetch manure, corn nitrogen status and yield did not differ across fertilizer rates.
Observation Corn total dry matter with vetch and no fertilizer was 22 ton/ha in 1997.
Observation Corn total dry matter with vetch and no fertilizer was 20 ton/ha in 1998.
Intervention effect Vetch manure raised corn dry matter by 9 ton/ha over fallow without fertilizer in 1997.
Intervention effect Vetch manure raised corn dry matter by 13 ton/ha over fallow without fertilizer in 1998.
Intervention effect Corn yield at 60kgN/ha with vetch exceeded yield at 180 or 240 kgN/ha with fallow.
Intervention effect Vetch increased corn nitrogen absorption over fallow by 141 kgN/ha without fertilizer in 1997.
Intervention effect Vetch increased corn nitrogen absorption over fallow by 159 kgN/ha without fertilizer in 1998.
Observation Vetch reduced corn nitrogen fertilizer requirement by 149 kgN/ha in 1997.
Observation Vetch reduced corn nitrogen fertilizer requirement by 161kgN/ha in 1998.
Intervention effect Corn absorbed more soil nitrogen at 60kgN/ha with vetch than at 180 or 240 kgN/ha under fallow.
Recommendation Winter cultivation and incorporation of hairy vetch could reduce fertilizer nitrogen for corn.

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Nitrogen fertilizer increased tobacco dry weight over no nitrogen fertilizer.

Taxon: tobaccoNicotiana tabacume0
Treatment: nitrogene0
Outcome: dry weighte0
Direction: increasede0
Comparator: non nitrogen fertilizere0

Verbatim

t0
“TOBACCO (NICOTIANA TABACUM L.)”
✓ located verbatim in the source · title, characters 117–147

e0
“Application of nitrogen significantly increased dry weight of tobacco in comparison with control treatment (non nitrogen fertilizer).”
✓ located verbatim in the source · abstract, characters 736–869

Title

EFFECT OF NITROGEN FERTILIZER AND AZOTOBACTER ON SOME QUANTITATIVE AND QUALITATIVE CHARACTERISTICS OF (FLUE - CURED) TOBACCO (NICOTIANA TABACUM L.)

Sabeti Amirhandeh; A R Falah Nosratabad; Majid Norouzi; et al. 2012

Other claims from this paper (14)

Intervention effect Nitrogen fertilizer significantly affected tobacco quantitative characteristics other than leaf number, width and leaf area index.
Intervention effect Nitrogen fertilizer significantly affected tobacco nitrogen uptake.
Intervention effect Nitrogen fertilizer significantly affected tobacco qualitative characteristics.
Intervention effect Azotobacter root inoculation significantly affected priming dry weight.
Intervention effect Azotobacter root inoculation significantly affected tobacco price per kg.
Intervention effect Azotobacter root inoculation significantly affected tobacco nitrogen uptake.
Intervention effect Azotobacter root inoculation significantly affected tobacco qualitative characteristics.
Intervention effect Combined nitrogen fertilizer and Azotobacter increased nitrogen uptake over control.
Intervention effect Combined nitrogen fertilizer and Azotobacter increased nicotine over control.
Intervention effect Combined nitrogen fertilizer and Azotobacter decreased sugar over control.
Observation N4B3 produced maximum nicotine in priming.
Observation N4B3 produced minimum sugar in tips.
Observation N3B2 produced maximum tobacco price per kg.
Observation Azotobacter inoculation was economically most efficient at lower nitrogen doses.

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Nitrogen fertilizer significantly increased rice tiller number versus no nitrogen.

Taxon: riceOryza sativae0
Treatment: nitrogen fertilizere0
Outcome: number of tillerse0
Direction: increasede0
Comparator: no nitrogen fertilizere0

Verbatim

e0
“Compared with no nitrogen fertilizer,nitrogen fertilizer increased the number of tillers of rice significantly”
✓ located verbatim in the source · abstract, characters 564–674