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“yield decrease”

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Organism: Helianthus annuus ✕

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Sunflower yield gradually decreased with delayed sowing.

Taxon: sunflowerHelianthus annuust0
Treatment: delay in sowinge0
Outcome: yielde0
Direction: decreasee0

Verbatim

t0
“sunflower”
✓ located verbatim in the source · title, characters 54–63

e0
“there was a gradual decrease in yield with delay in sowing”
✓ located verbatim in the source · abstract, characters 808–866

Title

Response to sowing dates and performance of different sunflower (Helianthus annuus) hybrids during rainy season in high-intensity cropping systems

H.S. Sur; Amit Sharma The Indian Journal of Agricultural Sciences 1999

Other claims from this paper (13)

Observation Rainy-season sunflower seed yield ranged from 1 559-2224 kg/ha across rainfall years.
Intervention effect Sowing on 1113 August produced the highest sunflower seed yield, 1 587-2453 kg/ha.
Intervention effect Sowing on 1113 August produced the highest sunflower stover yield, 3 563-3970 kg/ha.
Association Growth duration increased from 92-99 days with delayed sunflower sowing.
Association Total heat units decreased from 1731 - 1621 with delayed sunflower sowing.
Observation Growth duration and heat units had low reported CVs of 2.9% and 26%, respectively.
Observation No evaluated sunflower hybrid outperformed Jawalamukhi.
Observation Pearl millet fresh fodder yield ranged from 3 296.-6 429 kg/ha.
Association wheat performance declined with later sowing from 7 November to 3 December.
Association barley performance declined with later sowing from 7 November to 3 December.
Association oats performance declined with later sowing from 7 November to 3 December.
Association lentil performance declined with later sowing from 7 November to 3 December.
Association safflower performance declined with later sowing from 7 November to 3 December.

Associationobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Yield loss was associated with smaller head diameter and fewer seeds per head.

Taxon: sunflowerHelianthus annuust0
Organ / stage: heade0
Outcome: yield lossese0
Direction: lossese0
Qualifier: decrease at head diameter and seeds per heade0

Verbatim

e0
“Significant yield losses were arisen with decrease at head diameter and seeds per head.”
✓ located verbatim in the source · abstract, characters 943–1030

t0
“Sunflower”
✓ located verbatim in the source · title, characters 119–128

Title

Effects of Stand Reduction Applied at Different Plant Growth Stages on the Yield and Yield Components of Components of Sunflower

Abdurrahim Tanju Göksoy DergiPark (Istanbul University) 1999

Other claims from this paper (8)

Intervention effect A 25% stand reduction did not significantly reduce sunflower seed yield relative to the check.
Intervention effect A 50% stand reduction significantly reduced sunflower seed yield relative to the check.
Intervention effect A 50% stand reduction at the four-leaf stage caused 22% yield loss.
Intervention effect A 50% stand reduction at the eight-leaf stage caused 17% yield loss.
Intervention effect A 50% stand reduction at the 16-leaf stage caused 29% yield loss.
Intervention effect A 50% stand reduction at bud stage caused 33% yield loss.
Intervention effect Later 50% stand losses at 16-leaf and bud stages caused significant yield loss.
Association Head diameter and seeds per head were positively correlated with yield at the lowest population.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Dry matter yield decreased at 60 kg S/ha.

Taxon: sunflowerHelianthus annuust0
Treatment: 60 kg S/hae0
Outcome: dry-matter ylelde0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“Though there was decrease in dry-matter yleld at 60 kg S/ha, the S uptake increased with the increase in S level from 0 to 60 kg/ha.”
✓ located verbatim in the source · abstract, characters 672–804

t0
“sunflower”
✓ located verbatim in the source · title, characters 85–94

Title

Effect of source and level of sulphur on yield and sulphur content of plant parts of sunflower (Helianthus annuus)

B Sreeman Narayana; A. Sreenivasa Raju The Indian Journal of Agricultural Sciences 1994

Other claims from this paper (7)

Observation EC 68414 had the highest plant part yield under the tested sulphur sources.
Observation EC 68414 had the highest sulphur content.
Observation EC 68414 had the highest sulphur uptake.
Observation Sulphur content peaked in leaves at bud and flowering stages and in mature seeds.
Association Sulphur content decreased as the sunflower crop aged.
Intervention effect Sulphur uptake increased as sulphur application rose from zero to 60 kg/ha.
Recommendation The authors conclude that high leaf sulphur at budding and flowering is needed for optimum sunflower production.

Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Coefficient of variability declined as plot size increased.

Taxon: SUNFLOWERHelianthus annuust0
Outcome: coefficient of variability (CV%)e0
Direction: decreasee0
Comparator: plot size (x)e0

Verbatim

e0
“As plot size (x) increased the vari‌ance per basic unit (Vx) and coefficient of variability (CV%) tended to decrease.”
✓ located verbatim in the source · abstract, characters 456–573

t0
“SUNFLOWER YIELD TRIALS”
✓ located verbatim in the source · title, characters 58–80

Title

OPTIMUM PLOT SIZE, SHAPE AND NUMBER OF REP- LICATIONS FOR SUNFLOWER YIELD TRIALS

SAED M. NASR Egyptian Journal of Agricultural Research 1998. doi:10.21608/ejar.1998.359112

Other claims from this paper (10)

Association Variance per basic unit declined as plot size increased.
Observation Soil heterogeneity index was 0.739 in 1996.
Observation Soil heterogeneity index was 0.698 in 1997.
Observation Mean soil heterogeneity index was 0.718.
Method / resource Smith method estimated an optimum plot size of 4.159 to 5.095 m2.
Method / resource Maximum curvature estimated optimum plot size as 11.326 m2.
Association Plot shape and direction affected variance.
Observation Plot shape mattered for small plots.
Recommendation Long narrow plots were recommended.
Association Increasing replication improved detection of mean differences more than increasing plot size.

Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Variance per basic unit declined as plot size increased.

Taxon: SUNFLOWERHelianthus annuust0
Outcome: vari‌ance per basic unit (Vx)e0
Direction: decreasee0
Comparator: plot size (x)e0

Verbatim

e0
“As plot size (x) increased the vari‌ance per basic unit (Vx) and coefficient of variability (CV%) tended to decrease.”
✓ located verbatim in the source · abstract, characters 456–573

t0
“SUNFLOWER YIELD TRIALS”
✓ located verbatim in the source · title, characters 58–80

Title

OPTIMUM PLOT SIZE, SHAPE AND NUMBER OF REP- LICATIONS FOR SUNFLOWER YIELD TRIALS

SAED M. NASR Egyptian Journal of Agricultural Research 1998. doi:10.21608/ejar.1998.359112

Other claims from this paper (10)

Association Coefficient of variability declined as plot size increased.
Observation Soil heterogeneity index was 0.739 in 1996.
Observation Soil heterogeneity index was 0.698 in 1997.
Observation Mean soil heterogeneity index was 0.718.
Method / resource Smith method estimated an optimum plot size of 4.159 to 5.095 m2.
Method / resource Maximum curvature estimated optimum plot size as 11.326 m2.
Association Plot shape and direction affected variance.
Observation Plot shape mattered for small plots.
Recommendation Long narrow plots were recommended.
Association Increasing replication improved detection of mean differences more than increasing plot size.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Nitrogen levels decreased seed oil content of sunflower.

Taxon: sunflowerHelianthus annuuse2
Treatment: nitrogen levelse1
Outcome: seed oil contente1
Direction: decreaseinferrede1
Setting: Giza Governoratee0

Not reportedComparator

Verbatim

e0
“Two field trials were carried out at Giza Governorate during 1990 and 1991 seasons”
✓ located verbatim in the source · abstract, characters 0–82

e1
“nitrogen levels significantly increased plant height, head diameter, seed yield/plant, 1 00-seed weight and seed yield /feddan as well as oil yield/feddan, while seed oil content was depressed”
✓ located verbatim in the source · abstract, characters 306–499

e2
“on sunflower yield and its components”
✓ located verbatim in the source · abstract, characters 223–260

Title

EFFECT OF DIFFERENT LEVELS OF NITROGEN AND POTASSIUM ON SUNFLOWER PRODUCTION

ABDEL-MONEM Y. EL-BASHBISHY; ABDEL-WAHED Y. NEGM; MOHAMED H. RABIE Egyptian Journal of Agricultural Research 1994. doi:10.21608/ejar.1994.452069

Other claims from this paper (7)

Intervention effect Nitrogen levels significantly increased plant height, head diameter and seed yield per plant of sunflower.
Intervention effect Nitrogen levels significantly increased the 100-seed weight of sunflower.
Intervention effect Nitrogen levels significantly increased seed yield and oil yield per feddan of sunflower.
Intervention effect 60 kg N/fed produced the highest seed and oil yields per feddan of sunflower.
Intervention effect Adding potassium levels increased seed yield, oil yield and seed oil content of sunflower.
Intervention effect 48 kg K2O/fed produced the highest seed and oil yield of sunflower.
Intervention effect In most cases there was no significant difference in sunflower response between 24 and 48 kg K2O/fed.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Sulphur uptake increased as sulphur application rose from zero to 60 kg/ha.

Taxon: sunflowerHelianthus annuust0
Treatment: S level from 0 to 60 kg/hae0
Outcome: S uptakee0
Direction: increasede0
Comparator: 0e0

Verbatim

e0
“Though there was decrease in dry-matter yleld at 60 kg S/ha, the S uptake increased with the increase in S level from 0 to 60 kg/ha.”
✓ located verbatim in the source · abstract, characters 672–804

t0
“sunflower”
✓ located verbatim in the source · title, characters 85–94

Title

Effect of source and level of sulphur on yield and sulphur content of plant parts of sunflower (Helianthus annuus)

B Sreeman Narayana; A. Sreenivasa Raju The Indian Journal of Agricultural Sciences 1994

Other claims from this paper (7)

Observation EC 68414 had the highest plant part yield under the tested sulphur sources.
Observation EC 68414 had the highest sulphur content.
Observation EC 68414 had the highest sulphur uptake.
Observation Sulphur content peaked in leaves at bud and flowering stages and in mature seeds.
Association Sulphur content decreased as the sunflower crop aged.
Intervention effect Dry matter yield decreased at 60 kg S/ha.
Recommendation The authors conclude that high leaf sulphur at budding and flowering is needed for optimum sunflower production.

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