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“yield decrease”

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Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Pearl millet had the greatest yield decrease under intercropping.

Taxon: Pearl milletCenchrus americanuse0
Treatment: intercroppede0
Outcome: yielde0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“Pearl millet was the cereal with the greatest decrease in yield when intercropped”
✓ located verbatim in the source · abstract, characters 1044–1125

Title

Agronomic characteristics of intercropped legume and cereal crops.

E. A. Menezes UA Campus Repository (The University of Arizona) 1988

Other claims from this paper (10)

Observation Sorghum with soybean was the most appropriate species combination in 1985.
Observation Sorghum was the best cereal competitor with legumes.
Observation Soybean was the best legume competitor with cereals.
Observation Pioneer 8493 yielded more in monocrop.
Intervention effect The other two sorghum genotypes yielded more under intercropping.
Observation All three sorghum genotypes had high land equivalent ratios, indicating an intercropping advantage.
Intervention effect Soybean genotype yields decreased drastically in intercropping.
Observation Asgrow A6520 had the highest soybean yield in intercropping.
Recommendation California IO80H40 was chosen as the most appropriate sorghum genotype for intercropping.
Recommendation Rillito was chosen as the most appropriate soybean genotype for intercropping.

Associationobservedoriginal resultnegativesimulated

Claim · model-written summary

Models predicted above average July heat units would decrease corn yield.

Treatment: above average heat unitse0
Outcome: yielde0
Direction: decreasee0

Not reportedTaxon

Verbatim

e0
“above average heat units would decrease yield”
✓ located verbatim in the source · abstract, characters 1433–1478

Title

Nitrogen, Climate, and Previous Crop Effect on Corn Yield and Grain N¹

M. Asghari; R. G. Hanson Agronomy Journal 1984. doi:10.2134/agronj1984.00021962007600040007x

Other claims from this paper (12)

Intervention effect N fertilizer significantly increased corn yield in three of four years after small grain.
Intervention effect N fertilization did not increase corn yield following alfalfa.
Intervention effect N fertilization significantly increased corn grain N content.
Observation Corn grain N content was higher following alfalfa.
Association One hundred percent relative yield corresponded to grain N content of 1.09 mol kg− 1.
Association June precipitation had no significant effect on corn yield.
Association Above average June heat units positively affected corn yield.
Association Models predicted above average July precipitation would increase corn yield.
Association More precipitation could offset above average July heat unit effects.
Method / resource Model predicted 114.3 mm July precipitation to reach 100% relative yield at mean heat units.
Method / resource At 114.3 mm precipitation, the predicted corn yield was 9.36 Mg ha− 1.
Method / resource The predicted N fertilizer requirement for that yield was 136 kg N ha− 1.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Early ethephon application caused less yield decrease than later application.

Taxon: cornZea mays subsp. mayst0
Treatment: Early applicatione0
Outcome: yielde0
Direction: less yield decreasee0
Comparator: later timingse0

Verbatim

e0
“Early application showed less yield decrease than later timings.”
✓ located verbatim in the source · abstract, characters 1121–1185

t0
“Corn”
✓ located verbatim in the source · title, characters 47–51

Title

Use of Ethephon as a Plant Growth Regulator in Corn Production

J. M. Gaska; E. S. Oplinger Crop Science 1988. doi:10.2135/cropsci1988.0011183x002800060024x

Other claims from this paper (10)

Intervention effect Ethephon increased yields of hybrid 3377 up to 280 g ha −1.
Intervention effect Other tested corn hybrids showed decreased yields under ethephon.
Intervention effect Hybrid 3377 yield increased 0.77 Mg ha −1 (7.6%) with 280 g ha −1 in 1985.
Intervention effect High-rate ethephon increased grain yield per ear by 3% in hybrid 3377.
Intervention effect High-rate ethephon decreased grain yield per ear by 12% in hybrid 3737.
Intervention effect High-rate ethephon decreased plant and ear height by up to 20%.
Intervention effect High-rate ethephon decreased lodging by 63% in 1986.
Intervention effect High-rate ethephon decreased harvesting time by 20% in 1986.
Recommendation Under lodging-prone conditions, the authors suggest high-rate early ethephon may preserve yield and ease harvesting.
Recommendation Without lodging, high-rate late ethephon may reduce yield in some hybrids.

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“yield decrease”

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1980s 800