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“yield decrease”

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Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Higher density reduced pods per plant, peas per pod and pea weight, offsetting yield gains.

Taxon: Garden peasLathyrus oleraceust0
Treatment: increasing plant numberse0
Outcome: pods/plant, peas/pod, and pea weighte0
Direction: decreasee0

Verbatim

e0
“The effect of plant density on yield was much less than irrigation as a result of increasing plant numbers being largely nullified by a major decrease in pods/plant, peas/pod, and pea weight.”
✓ located verbatim in the source · abstract, characters 584–775

t0
“Garden peas”
✓ located after whitespace/quote normalisation · title, characters 9–20

Title

Yield of garden peas—field responses to variation in sowing rate and irrigation

J. G. H. White; G. W. Sheath; G. Meijer New Zealand Journal of Crop and Horticultural Science 1982. doi:10.1080/03015521.1982.10427860

Other claims from this paper (11)

Observation Irrigation increased first-year green pea yield by 84%.
Observation Irrigation increased first-year seed yield by 78%.
Observation Irrigation increased pods per plant, peas per pod and pea weight in year one.
Observation Water increased vine length and weight and harvest index.
Observation Irrigation increased second-year seed yields by 33%.
Observation Without irrigation, first-season green pea yield did not increase significantly beyond 83 plants/m 2.
Observation With water, first-season yield at 135 plants/m 2 was significantly higher.
Observation First-year seed pea yield did not respond to changing plant density.
Observation Second-season yield was higher at 101 than 65 plants/m 2 under both water regimes.
Observation Under optimum irrigation and density, green pea yield reached 10.5 t/ha.
Observation Under optimum irrigation and density, seed pea yield reached 5.2 t/ha.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Reducing fertilizer to 75% decreased grain yield by 13%.

Taxon: maize-wheat-green gramt0
Treatment: 75e0
Outcome: grain yielde0
Direction: decreasee0
Value: 13e0
Comparator: 100% of the recommended amounts of N and Pe0

Verbatim

e0
“a reduction in fertilizer dose from 100% of the recommended amounts of N and P to 75 and 50% levels resulted in an overall decrease of 13 and 26% in grain yield, respectively”
✓ located verbatim in the source · abstract, characters 172–346

t0
“maize-wheat-green gram rotation”
✓ located verbatim in the source · abstract, characters 53–84

Title

Crop Yields and Nutrient Uptake in a Cropping Sequence under Resource Constraints

D.S. RANA; O. P. Meelu; K. N. Sharma; et al. Journal of the Indian Society of Soil Science 1984

Other claims from this paper (5)

Intervention effect Reducing fertilizer to 50% decreased grain yield by 26%.
Intervention effect Reducing irrigation frequency caused little variation in wheat yield at equal total water volume.
Intervention effect Reducing irrigation from 8 or 10 to 4 or 5 did not affect green gram grain production.
Intervention effect Curtailing fertilizer decreased crop nitrogen and phosphorus uptake.
Observation Variation in irrigation had marginal effects on crop nutrient uptake.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Inoculation later than a week before flowering did not reduce grain number.

Taxon: soybeanGlycine maxt0
Treatment: inoculated later than one week prior to floweringe0
Interactor: soybean mosaic virusSoybean mosaic virust0pathogen
Outcome: decreasee0
Direction: No decreasee0

Not reportedComparator

Verbatim

e0
“No decrease was observed in the plants inoculated later than one week prior to flowering.”
✓ located verbatim in the source · abstract, characters 175–264

t0
“soybean mosaic virus”
✓ located verbatim in the source · title, characters 30–50

Title

Effect of inoculation time of soybean mosaic virus on yield and seed quality of soybean.

Masaaki NAKANO; Tomio USUGI; Akira SHINKAI Kyushu Plant Protection Research 1988. doi:10.4241/kyubyochu.34.13

Other claims from this paper (6)

Intervention effect Seedling-stage SMV inoculation reduced grain number by 40% in Hyuuga.
Intervention effect Seedling-stage SMV inoculation reduced grain number by 24% in Fukuyutaka.
Intervention effect Inoculation at flowering produced more distinct seed mottling than seedling-stage inoculation.
Observation Hyuuga seed transmission was about 10% following infection from the seedling stage to one week before flowering.
Association Later SMV inoculation in the week before flowering lowered seed transmission.
Observation Inoculation after flowering produced no seed transmission.

Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Death of stem apices and a decrease in the rate of node formation are mechanisms regulating the duration and intensity of alfalfa flowering and pod set.

Taxon: alfalfaMedicago sativae0
Organ / stage: stem apicese7
Outcome: duration and intensity of flowering and pod sete7
Qualifier: decrease in the rate of node formatione7

Verbatim

e0
“Seed yields of alfalfa ( Medicago sativa L.)”
✓ located verbatim in the source · abstract, characters 9–53

e7
“Death of stem apices and a decrease in the rate of node formation were identified as mechanisms which regulate the duration and intensity of flowering and pod set”
✓ located verbatim in the source · abstract, characters 1626–1788

Title

Irrigation Regime and Honeybee Activity as Related to Seed Yield in Alfalfa¹

A. Goldman; A. Dovrat Agronomy Journal 1980. doi:10.2134/agronj1980.00021962007200060023x

Other claims from this paper (9)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Reducing fertilizer to 50% decreased grain yield by 26%.

Taxon: maize-wheat-green gramt0
Treatment: 50% levelse0
Outcome: grain yielde0
Direction: decreasee0
Value: 26%e0
Comparator: 100% of the recommended amounts of N and Pe0

Verbatim

e0
“a reduction in fertilizer dose from 100% of the recommended amounts of N and P to 75 and 50% levels resulted in an overall decrease of 13 and 26% in grain yield, respectively”
✓ located verbatim in the source · abstract, characters 172–346

t0
“maize-wheat-green gram rotation”
✓ located verbatim in the source · abstract, characters 53–84

Title

Crop Yields and Nutrient Uptake in a Cropping Sequence under Resource Constraints

D.S. RANA; O. P. Meelu; K. N. Sharma; et al. Journal of the Indian Society of Soil Science 1984

Other claims from this paper (5)

Intervention effect Reducing fertilizer to 75% decreased grain yield by 13%.
Intervention effect Reducing irrigation frequency caused little variation in wheat yield at equal total water volume.
Intervention effect Reducing irrigation from 8 or 10 to 4 or 5 did not affect green gram grain production.
Intervention effect Curtailing fertilizer decreased crop nitrogen and phosphorus uptake.
Observation Variation in irrigation had marginal effects on crop nutrient uptake.

Mechanismauthor interpretationoriginal resultnegativebasis n/a

Claim · model-written summary

The losses in yield are attributed to a reduced photosynthetic area and a decreased availability of mobile mineral elements in the leaves

Taxon: tomatoesSolanum lycopersicumt0
Outcome: Losses in yielde2
Qualifier: a reduction in photosynthetic area and a decrease in the availability of mobile mineral elementse2

Verbatim

t0
“glasshouse tomatoes”
✓ located verbatim in the source · title, characters 60–79

e2
“Losses in yield are attributed to a reduction in photosynthetic area and a decrease in the availability of mobile mineral elements which are present in the leaves”
✓ located verbatim in the source · abstract, characters 1204–1366

Title

The effects of leaf removal on the development and yield of glasshouse tomatoes

G. Slack Journal of Horticultural Science 1986. doi:10.1080/14620316.1986.11515713

Other claims from this paper (12)

Intervention effect Flower opening on de-leafed plants was delayed, but only significantly so in the most severe leaf removal treatment, in the first experiment
Intervention effect Leaf removal had no effect on stem elongation in the first experiment
Intervention effect Yield decreased with increasing severity of leaf removal
Intervention effect The rate of fruit ripening was enhanced with increasing severity of leaf removal
Intervention effect In the second experiment, de-leafing had no effect on flower opening or stem elongation
Intervention effect The most severe leaf removal reduced total yield
Intervention effect Leaf removal had no effect on fruit numbers or quality
Association Plant density had large and significant effects on the tomato crop
Association No interactions between planting density, leaf removal and cultivar were found
Association The effects of de-leafing and density were similar across all three cultivars
Association Crop yield was affected by both the severity of leaf removal and the stage of plant development at which removal occurred
Recommendation De-leafing in commercial tomato crops should not exceed the level of ripening fruits

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Delayed seeding decreased seed yield, harvest index and plant density.

Taxon: Brassica napusBrassica napust0
Treatment: Delayed seedinge0
Outcome: seed yield, harvest index, plant densitye0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“Delayed seeding resulted in a significant increase in vegetative and total yield but a significant decrease in seed yield, harvest index, plant density, racemes per plant and racemes per unit area.”
✓ located verbatim in the source · abstract, characters 175–372

t0
“THE INFLUENCE OF SEEDING DATE AND SEEDING RATE ON SEED YIELD AND YIELD COMPONENTS OF FIVE GENOTYPES OF Brassica napus”
✓ located verbatim in the source · title, characters 0–117

Title

THE INFLUENCE OF SEEDING DATE AND SEEDING RATE ON SEED YIELD AND YIELD COMPONENTS OF FIVE GENOTYPES OF Brassica napus

D. F. DEGENHARDT; Z. P. KONDRA Canadian Journal of Plant Science 1981. doi:10.4141/cjps81-027

Other claims from this paper (9)

Intervention effect Delayed seeding increased vegetative and total yield.
Intervention effect Delayed seeding decreased racemes per plant and per unit area.
Intervention effect Seeding date had no significant effect on seed yield per plant, 1000-seed weight or plant height.
Intervention effect Increased seeding rate increased plant density and racemes per unit area.
Intervention effect Increased seeding rate decreased harvest index, racemes per plant and seed yield per plant.
Intervention effect Increased seeding rate decreased plant height.
Intervention effect Seeding rate had no significant effect on seed, vegetative or total yield.
Intervention effect Seeding rate had no significant effect on 1000-seed weight.
Association Genotypes differed significantly for measured variables other than total yield and racemes per unit area.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

N, P and K uptake of rice showed a decrease trend at 50 kg/ha zinc.

Taxon: rice varietiesOryza sativae0
Treatment: 50 kg/ha levele3
Outcome: N, P and K uptakee3
Direction: decrease trende3

Not reportedComparator

Verbatim

e0
“A field experiment was conducted to study the response of rice varieties IET 3280, CO. 29 with 0, 12.5, 25.0 and kg/ha Zinc sulphate”
✓ located verbatim in the source · abstract, characters 0–132

e3
“Zinc application at 25 kg/ha improved the N, P and K uptake and a decrease trend was noticed at 50 kg/ha level”
✓ located verbatim in the source · abstract, characters 345–455

Title

INFLUENCE OF ZINC ON GROWTH, DRY MATTER PRODUCTION, NUTRIENT UPTAKE AND YIELD IN CERTAIN RICE VARIETIES

Balakrishnan K; Gepalakrishnan S; Natarajaratnam N Madras Agricultural Journal 1985. doi:10.29321/maj.10.a02340

Other claims from this paper (5)

Intervention effect Shoot length and shoot dry weight of rice were maximal at 25 kg/ha zinc sulphate in all varieties.
Intervention effect Root length and root weight of rice showed a phenomenal increase in response to applied zinc.
Intervention effect Zinc application at 25 kg/ha improved N, P and K uptake in rice.
Intervention effect Zinc content of rice increased with increasing zinc application up to 50 kg/ha.
Intervention effect Maximum rice grain yield was recorded at 25 kg/ha zinc supplements.

Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

N source selection should account for residue, with less yield decrease potential for urea-based materials in soybean residue.

Taxon: cornZea mays subsp. mayse0
Outcome: N source selection for no‐tillage corn can be affected by residue conditionse0
Qualifier: less potential for decreased yields when urea‐based N materials are used in soybean residue conditionse0

Verbatim

e0
“N source selection for no‐tillage corn can be affected by residue conditions, with less potential for decreased yields when urea‐based N materials are used in soybean residue conditions.”
✓ located verbatim in the source · abstract, characters 977–1163

Title

Response of No‐Tillage Corn Grown in Corn and Soybean Residues to Several Nitrogen Fertilizer Sources¹

D. J. Eckert; W. A. Dick; J. W. Johnson Agronomy Journal 1986. doi:10.2134/agronj1986.00021962007800020003x

Other claims from this paper (5)

Intervention effect urea produced lower corn yields than ammonia in corn residue during both years.
Intervention effect urea produced equivalent corn yields than ammonia in soybean residue during both years.
Intervention effect Urea‐ammonium nitrate solution produced lower corn yields than ammonia in corn residue during both years.
Intervention effect Urea‐ammonium nitrate solution produced equal corn yields than ammonia in soybean residue during 1982.
Intervention effect Urea‐ammonium nitrate solution produced lower corn yields than ammonia in soybean residue during 1983.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Increased seeding rates decreased rough rice yield.

Taxon: riceOryza sativae5
Treatment: increased seeding ratese3
Outcome: rough rice yielde3
Direction: decreasee3
Comparator: lower seeding ratee3

Verbatim

e3
“A significant increase in rice plant population and panicle density with the increased seeding rates was offset by a corresponding decrease in number of seeds per panicle and rough rice yield, and an increase in tillering at the lower seeding rate”
✓ located verbatim in the source · abstract, characters 1293–1540

e5
“maximizing yields in sprinkler‐irrigated rice ( Oryza sativa L.)”
✓ located verbatim in the source · abstract, characters 164–228

Title

Herbicides and Seeding Rate Effects on Sprinkler‐Irrigated Rice¹

K. H. Akkari; R. E. Talbert; J. A. Ferguson; et al. Agronomy Journal 1986. doi:10.2134/agronj1986.00021962007800050036x

Other claims from this paper (13)

Intervention effect Both herbicide programs controlled barnyardgrass.
Intervention effect Both herbicide programs controlled broadleaf signalgrass.
Intervention effect Both herbicide programs controlled large crabgrass.
Intervention effect Both herbicide programs controlled common cocklebur.
Intervention effect Both herbicide programs controlled smooth pigweed.
Intervention effect Propanil plus oxadiazon controlled pitted morningglory, whereas propanil alone did not.
Intervention effect Propanil plus oxadiazon controlled prickly sida, whereas propanil alone did not.
Intervention effect Increased seeding rates significantly increased rice plant population.
Intervention effect Increased seeding rates significantly increased panicle density.
Intervention effect Increased seeding rates decreased the number of seeds per panicle.
Intervention effect The lower seeding rate increased tillering relative to the increased seeding rates.
Recommendation The recommended seeding rate for sprinkler-irrigated rice should be reduced to between 50 and 100 kg/ha.
Recommendation Reduced seeding rates must be accompanied by timely and effective herbicide programs.

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“yield decrease”

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