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“decrease in density”

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Organism: Oryza sativa ✕

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

G + 1SSW + 1FW gave the maximum bulk density decrease.

Taxon: riceOryza sativat0
Treatment: G + 1SSW + 1FWe0
Outcome: bulk densitye0
Direction: maximum decreasee0

Not reportedComparator

Verbatim

t0
“Rice–Wheat Cropping System”
✓ located verbatim in the source · title, characters 135–161

e0
“maximum decrease in bulk density and increase in infiltration rate was observed with G + 1SSW + 1FW”
✓ located verbatim in the source · abstract, characters 1186–1285

Title

Environmental and Economic Benefits of Saline‐Sodic Soil Reclamation Using Low‐quality Water and Soil Amendments in Conjunction with a Rice–Wheat Cropping System

G. Murtaza; A. Ghafoor; G. Owens; et al. Journal of Agronomy and Crop Science 2009. doi:10.1111/j.1439-037x.2008.00350.x

Other claims from this paper (10)

Observation G + 1SSW + 1FW gave the maximum infiltration rate increase.
Observation FM + 1SSW + 1FW gave a higher pH decrease.
Observation FM + 1SSW + 1FW gave a higher EC decrease.
Observation G + 1SSW + 1FW gave the largest SAR decrease at both sites.
Observation G + 1SSW + 1FW generally gave maximum rice yields.
Observation G + 1SSW + 1FW generally gave maximum wheat yields.
Association Crop yield and economic benefits correlated positively with soil improvement.
Observation G + 1SSW + 1FW gave the greatest net benefit.
Association Farmers management skills were crucial for crop yield improvement.
Recommendation The authors propose saline sodic water in a rice wheat rotation with site specific management.

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Planthopper density showed a remarkable decrease in 1969 due to unknown factors, which caused little occurrence of rice stripe virus disease.

Taxon: riceOryza sativae3
Interactor: planthoppere3pest
Second interactor: rice stripe virusTenuivirus oryzaclavataee3pathogen
Outcome: density of planthoppere3
Direction: decreasee3
Qualifier: due to unknown factorse3

Verbatim

e3
“In 1969, density of planthopper showed remarkable decrease due to unknown factors, which caused little occurrence of the rice stripe virus disease”
✓ located verbatim in the source · abstract, characters 302–448

Title

Recent trend of percentage of infective planthopper, Laodelphax striatellus (Fallén), transmitting the rice stripe virus, in Kyushu

Ryoiti KISIMOTO Kyushu Plant Protection Research 1971. doi:10.4241/kyubyochu.17.112

Other claims from this paper (3)

Mechanismhypothesisoriginal resultpositivebasis n/a

Claim · model-written summary

Farmer's plowing is assumed to be a cause of the decrease in small brown planthopper density.

Taxon: riceOryza sativae0
Treatment: Farmer's plowinge6
Interactor: SBPHe6pest
Outcome: SBPH density decreasee6

Verbatim

e0
“In western and southern coast parts of 5 districts, Jindo, Wando, Shinan, Haenam and Muan, rice was severely damaged by RSV from 2008 to 2009”
✓ located verbatim in the source · abstract, characters 568–709

e6
“Farmer's plowing this season assumed to be a cause of SBPH density decrease”
✓ located verbatim in the source · abstract, characters 1187–1262

Title

Analysis of the Occurrence of Rice stripe virus in Jeonnam Province

Sug-Ju Ko; Beom-Ryong Kang; Do-Ik Kim; et al. Research in Plant Disease 2011. doi:10.5423/rpd.2011.17.3.351

Other claims from this paper (3)

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Decreasing planting density significantly increased spikelet number per panicle relative to the preceding population density in rice.

Taxon: riceOryza sativat0
Treatment: decrease in densitye3
Outcome: spikelet number per paniclee3
Direction: increasee3
Comparator: preceding population densitye3

Verbatim

t0
“rice (Oryza sativa L.)”
✓ located verbatim in the source · title, characters 68–90

e3
“a decrease in density brought a significant increase in spikelet number per panicle over the preceding population density”
✓ located verbatim in the source · abstract, characters 740–861

Title

Effect of planting density on growth, yield and yield attributes of rice (Oryza sativa L.)

Arbissie Asmamaw Berhanu African Journal of Agricultural Research 2017. doi:10.5897/ajar2014.9455

Other claims from this paper (14)

Intervention effect Planting density had a highly significant effect on panicle number per m2, spikelet number per panicle and ripening percentage in rice.
Intervention effect Panicle number per m2 was higher at 50 hills m-2, followed by 33.3 hills m-2, than at the standard density in rice.
Intervention effect Spikelet number per panicle increased by 44% at 16.7 hills m-2 compared with 50 hills m-2 in rice.
Intervention effect Spikelet number per panicle increased by 32% at 16.7 hills m-2 compared with 33.3 hills m-2 in rice.
Intervention effect Spikelet number per panicle increased by 26% at 16.7 hills m-2 compared with 25 hills m-2 in rice.
Intervention effect Spikelet number per panicle increased by 9% at 16.7 hills m-2 compared with 22.2 hills m-2 in rice.
Intervention effect Grain yield was higher at 50 hills m-2, followed by 16.7 hills m-2, but did not differ significantly among planting density treatments in rice.
Intervention effect Paddy yield under high planting density (50 hills m-2) was 4.0% higher than at 16.7 hills m-2 in rice.
Intervention effect Paddy yield under high planting density (50 hills m-2) was 9.5% higher than at 22.2 hills m-2 in rice.
Intervention effect Paddy yield under high planting density (50 hills m-2) was 4.8% higher than at 25 hills m-2 in rice.
Intervention effect Paddy yield under high planting density (50 hills m-2) was 6.9% higher than at 33.3 hills m-2 in rice.
Intervention effect Panicle length decreased by 12% in rice as plant density increased from 16.7 to 50 hills m-2.
Intervention effect Stem diameter decreased by 29.2% in rice as plant density increased from 16.7 to 50 hills m-2.
Recommendation The authors recommend 16.7 and 50 hills m-2 as the more appropriate densities for cultivating the rice variety Nerica-4.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Water-saving protective cultivation decreased soil bulk density.

Taxon: riceOryza sativat0
Treatment: Water-saving protective cultivation patterne0
Outcome: soil bulk densitye0
Direction: decreasee0

Not reportedComparator

Verbatim

t0
“rice”
✓ located verbatim in the source · title, characters 45–49

e0
“Water-saving protective cultivation pattern could decrease soil bulk density”
✓ located verbatim in the source · abstract, characters 775–851

Title

Effect of protective cultivation patterns of rice in cold areas on soil physiological and biochemical status in paddy field.

Xiuzhi Wang; Qian YongDe; Deyuan Zhang; et al. Agricultural Science and Technology Hunan 2010

Other claims from this paper (13)

Intervention effect Soil physical and chemical characteristics of rice paddy were clearly improved under water-saving protective cultivation.
Observation Root weights showed absolute advantages in the rotary tillage section.
Intervention effect Water-saving protective cultivation improved soil porosity.
Intervention effect Water-saving protective cultivation enhanced soil quick-acting nutrients.
Intervention effect Soil catalase activity was 5.39% higher under water-saving protective cultivation than conventional cultivation.
Intervention effect Soil acid phosphatase activity was 14.52% higher under water-saving protective cultivation than conventional cultivation.
Intervention effect Soil urease activity was 8.33% higher under water-saving protective cultivation than conventional cultivation.
Intervention effect Soil sucrase activity was 32.82% lower under water-saving protective cultivation than conventional cultivation.
Intervention effect The crude straw decomposition rate in the surface layer was 11.71% higher than under conventional cultivation.
Intervention effect The crude straw decomposition rate in the whole tillage layer was 4.69% higher than under conventional cultivation.
Intervention effect The crude straw decomposition rate in the deep layer was 9.10% higher than under conventional cultivation.
Intervention effect The total number of soil bacteria was greatly increased.
Intervention effect Soil temperature was obviously improved.

Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

P1 tillers per nest increased as density decreased.

Taxon: riceOryza sativae0
Material: P1e0
Treatment: decrease of densitye0
Outcome: tiller quantity per neste0
Direction: increasede0

Verbatim

e0
“Along with the decrease of density, the rice tiller quantity per nest increased correspondingly in tillering peak stage of P1.”
✓ located verbatim in the source · abstract, characters 392–518

e1
“Yixiang 481 (P1)”
✓ located verbatim in the source · abstract, characters 296–312

Title

Influences of Planting Density on the Yield and Its Composing Factors of Two Rice Varieties

Yan Ming-jian Anhui nongye kexue 2008

Other claims from this paper (8)

Association Peak tillering occurred earlier at higher density in both varieties.
Association Available ears per plant declined linearly as density rose.
Observation P1 reached 241 200 0/hm2 available ears at 172 500 nests/hm2.
Observation P1 reached 10 281.6 kg/hm2 yield at 172 500 nests/hm2.
Observation P2 reached 277 050 0/hm2 available ears at 225 000 nests/hm2.
Observation P2 reached 9 631.5 kg/hm2 yield at 225 000 nests/hm2.
Association Full grains per ear had the largest influence on P1 yield.
Association More available ears significantly increased P2 yield.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Straw incorporation decreased soil bulk density, depending on the straw incorporation rate.

Taxon: riceOryza sativae0
Treatment: straw incorporatione1
Outcome: soil bulk density (BD)e1
Direction: decreasee1

Not reportedComparator

Verbatim

e0
“Planting rice is one method to effectively utilize saline sodic land”
✓ located verbatim in the source · abstract, characters 0–68

e1
“a decrease in soil bulk density (BD) and a decrease in the percentage of < 0.053 mm particle size aggregates after straw incorporation depend on the straw incorporation rate”
✓ located verbatim in the source · abstract, characters 687–860

Title

Changes in soil characteristics and rice yield under straw returning in saline sodic soils

Xudong Yuan; Cheng Ran; Dapeng Gao; et al. Soil Science & Plant Nutrition 2022. doi:10.1080/00380768.2022.2124097

Other claims from this paper (9)

Intervention effect Straw incorporation decreased the percentage of <0.053 mm particle size aggregates, depending on the straw incorporation rate.
Intervention effect Exchangeable Na+ and exchangeable sodium percentage were significantly lower in the straw treatments than in the CK treatment.
Intervention effect Straw incorporation had a positive effect on reducing soil pH and EC.
Intervention effect Straw incorporation had a positive effect on accumulation of soil organic matter and total nitrogen.
Association SOM and TN increased gradually as the straw incorporation rate increased.
Association Rice yield increased and then decreased as the straw incorporation rate increased.
Intervention effect The S3 treatment gave the highest rice yield, 8.57 t ha−1 as a four-year average.
Intervention effect There was no significant difference between the S3 and S4 treatments in soil physical structure, chemical properties or nutrients.
Recommendation A straw incorporation of 5600 kg ha−1 (S3) is recommended for improving saline sodic soil and increasing rice yield in the first four years.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Water-saving protective cultivation decreased soil bulk density.

Taxon: RiceOryza sativat0
Treatment: Water-saving protective cultivation patterne0
Outcome: soil bulk densitye0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“Water-saving protective cultivation pattern could decrease soil bulk density,improve soil porosity,enhance soil quick-acting nutrients.”
✓ located verbatim in the source · abstract, characters 763–898

t0
“Rice”
✓ located verbatim in the source · title, characters 45–49

Title

Effect of Protective Cultivation Patterns of Rice in Cold Areas on Soil Physiological and Biochemical Status

Guiping Zheng Anhui nongye kexue 2010

Other claims from this paper (12)

Observation Rice root weight was advantageous in the rotary tillage section.
Intervention effect Water-saving protective cultivation improved soil porosity.
Intervention effect Water-saving protective cultivation enhanced soil quick-acting nutrients.
Intervention effect catalase activity was 5.39% higher under water-saving protective cultivation than conventional tillage.
Intervention effect acid phosphatase activity was 14.52% higher under water-saving protective cultivation than conventional tillage.
Intervention effect urease activity was 8.33% higher under water-saving protective cultivation than conventional tillage.
Intervention effect Sucrase activity was 32.82% lower than conventional tillage.
Intervention effect Straw decomposition in surface layer was 11.71% higher than conventional tillage.
Intervention effect Straw decomposition in whole tillage layer was 4.96% higher than conventional tillage.
Intervention effect Straw decomposition in deep layer was 9.10% higher than conventional tillage.
Observation The total number of soil bacteria greatly increased.
Observation Soil temperature improved.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Five years of glyricidia incorporation decreased soil bulk density over control.

Taxon: riceOryza sativat0
Treatment: Incorporation of glyricidia leafy foliagee1
Outcome: bulk density of soile0
Direction: decreasee0
Comparator: controle0

Verbatim

e0
“decrease in bulk density of soil over control”
✓ located verbatim in the source · abstract, characters 440–485

t0
“rice (Oryza sativa)”
✓ located verbatim in the source · title, characters 77–96

e1
“Incorporation of glyricidia leafy foliage at same site for 5 years recorded increase in organic carbon, total N, available NPK, water holding capacity and decrease in bulk density of soil over control”
✓ located verbatim in the source · abstract, characters 285–485

Title

Effect of green manuring and NPK combinations on soil -- health and yield of rice (Oryza sativa)

S. D. CHAPHALE; W. P. BADOLE Indian Journal of Agronomy 2001. doi:10.59797/ija.v44i3.3532

Other claims from this paper (5)

Intervention effect Five years of glyricidia incorporation increased soil organic carbon, total N, available NPK, and water holding capacity over control.
Intervention effect Glyricidia incorporation produced significantly higher rice grain yield of 52.08 q/ha than control.
Intervention effect Glyricidia incorporation produced significantly higher rice straw yield of 83.28 q/ha than control.
Intervention effect The 100 : 50 and 50 kg NPW ha fertilizer level produced higher grain and straw yields than other treatments.
Observation The maximum benefit to cost ratio was 5.10 with glyricidia, followed by 1 -40 with fertilizer.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Decreasing planting density lightened banded sclerotial blight in rice.

Taxon: riceOryza sativat0
Treatment: decrease of planting densitye1
Outcome: banded sclerotial blighte1
Direction: lightene1

Not reportedComparator

Verbatim

t0
“rice intensification”
✓ located verbatim in the source · title, characters 36–56

e1
“Along with the decrease of planting density,tiller number of single plant and percentage of earbearing tiller can increase,number of grain per ear can increase and banded sclerotial blight can lighten”
✓ located verbatim in the source · abstract, characters 174–374

Title

Discussion about fitting density on rice intensification

Lin Hui Reclaiming and Rice Cultivation 2006

Other claims from this paper (7)

Intervention effect Decreasing planting density increased tiller number per plant and the percentage of ear-bearing tillers in rice.
Intervention effect Decreasing planting density increased the number of grains per ear in rice.
Intervention effect Different planting densities had an obvious influence on rice yield; high or low density was not favourable for high yield.
Intervention effect A planting density of 120 thousand clusters/hm2 gave the highest rice yield, 10 050 kg/hm2.
Intervention effect A planting density of 120 thousand clusters/hm2 increased production by 11% over 75 thousand clusters/hm2 in rice.
Intervention effect A planting density of 120 thousand clusters/hm2 increased production by 11% over 210 thousand clusters/hm2 in rice.
Intervention effect A planting density of 120 thousand clusters/hm2 increased production by 19.4% over 255 thousand clusters/hm2 in rice.

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“decrease in density”

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