Search claims · PlantClaims

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Omission of KSZnB did not significantly decrease yield.

Taxon: tefEragrostis teft0
Treatment: omission of KSZnB nutrientse0
Outcome: yielde0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“there was no significant (p<0.05) decrease in yield due to the omission of KSZnB nutrients”
✓ located verbatim in the source · abstract, characters 834–924

t0
“tef (Eragrostis tef (Zucc.) Trotter)”
✓ located verbatim in the source · title, characters 12–48

Title

Response of tef (Eragrostis tef (Zucc.) Trotter) yield to nutrient management under rainy and irrigation production systems in northwestern Amhara, Ethiopia

Zerfu Bazie; Tadele Amare; Erkihun Alemu; et al. PLoS ONE 2025. doi:10.1371/journal.pone.0315730

Other claims from this paper (10)

Intervention effect Grain yield varied significantly with nutrient omission.
Intervention effect Unfertilized nitisols had the lowest mean grain yield, 342 kg ha-1.
Intervention effect Unfertilized vertosols had the lowest mean grain yield, 491 kg ha-1.
Intervention effect N omission reduced rainy-season yield in nitisols by 49%.
Intervention effect N omission reduced rainy-season yield in vertosols by 65%.
Intervention effect N omission reduced irrigation-season yield by 19%.
Intervention effect P omission reduced rainy-season yield by 10%.
Observation N was the primary yield-limiting nutrient in both seasons.
Observation P also limited yield in nitisols.
Recommendation Required nutrients should be monitored periodically.

Observationobservedoriginal resultnegativesimulated

Claim · model-written summary

The same selection predicted a yield decrease of 87 pounds per acre.

Taxon: Nicotiana tabacumNicotiana tabacumt0
Outcome: yield per acree0
Direction: decreasee0
Value: 87 pounds yield per acree0

Verbatim

e0
“An expected correlated response was a decrease of 87 pounds yield per acre.”
✓ located verbatim in the source · abstract, characters 752–827

t0
“Nicotiana tabacum”
✓ located verbatim in the source · title, characters 47–64

Title

Genetic Variability in Flue‐Cured Varieties of Nicotiana tabacum. II. Dixie Bright 244 ✕ Coker 139¹

D. F. Matzinger; T. J. Mann; C. Clark Cockerham Crop Science 1966. doi:10.2135/cropsci1966.0011183x000600050026x

Other claims from this paper (6)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Nut yield tended to decrease above 220 kg·ha -1 K per year.

Taxon: PistachioPistacia verat0
Treatment: annual rate exceeded 220 kg·ha -1 Ke0
Outcome: nut yielde0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“nut yield tended to decrease when the annual rate exceeded 220 kg·ha -1 K”
✓ located verbatim in the source · abstract, characters 705–778

t0
“Pistachio”
✓ located verbatim in the source · title, characters 98–107

Title

Potassium Fertilization Affects Soil K, Leaf K Concentration, and Nut Yield and Quality of Mature Pistachio Trees

Qiupeng Zeng; Patrick H. Brown; Brent A. Holtz HortScience 2001. doi:10.21273/hortsci.36.1.85

Other claims from this paper (8)

Observation Leaf K was below 10 g·kg -1 during spring flush, rose during fruit development and fell after harvest.
Intervention effect K fertilization increased leaf K concentration.
Intervention effect Annual potassium at 110 to 220 kg·ha -1 significantly increased nut yield and quality.
Intervention effect K sources did not differ significantly in effects on leaf K, nut yield and quality.
Intervention effect Three years of KCl did not increase leaf Cl concentration.
Association Nut yield correlated positively and significantly with leaf K during nut fill.
Observation The critical leaf K value for optimal production was 16.9 g·kg -1.
Recommendation Authors recommend annual 110 to 220 kg·ha -1 K from K 2 SO 4, KCl or KNO 3 in productive orchards.

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Salt resistant hybrids showed no grain yield decrease under salinity.

Taxon: maizeZea mayst0
Material: SR hybridse0
Treatment: salinitye0
Outcome: grain yielde0
Direction: no decreasee0

Not reportedComparator

Verbatim

e0
“Yield of Pioneer‐3906 was significantly reduced under salinity because of inhibited kernel setting, whereas the SR hybrids showed no decrease in grain yield.”
✓ located verbatim in the source · abstract, characters 824–981

t0
“Enhancing maize grain yield”
✓ located verbatim in the source · title, characters 0–27

Title

Enhancing maize grain yield under salt‐affected field conditions using salt‐resistant maize hybrids and higher planting density

Muhammad Saqib; Sven Schubert Journal of Plant Nutrition and Soil Science 2023. doi:10.1002/jpln.202200423

Other claims from this paper (6)

Intervention effect Salinity significantly reduced Pioneer‐3906 yield through inhibited kernel setting.
Intervention effect The optimum planting density for grain yield was 8 plants per square metre.
Intervention effect EV‐78 harvest index did not increase at 8 versus 5 plants per square metre.
Mechanism Pioneer‐3906 vegetative growth decreased due to Phase I effects.
Mechanism SR hybrids vegetative growth decreased due to Phase I effects.
Recommendation Salt resistant cultivar planting density may be higher under saline conditions with irrigation.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

The yield decrease under continuous direct sowing occurred only in soils low in available phosphorus.

Taxon: riceOryza sativat0
Treatment: continuous direct sowing culturee1
Outcome: decrease of yielde1
Direction: decreasee1
Qualifier: only in such soils that were low in available phosphorus contente1

Verbatim

t0
“Rice Yield Decrease Resulting from Continual Direct Sowing Culture”
✓ located verbatim in the source · title, characters 25–91

e1
“the decrease of yield in the continuous direct sowing culture caused by the shortage of phosphorus absorption could be recognized only in such soils that were low in available phosphorus content”
✓ located verbatim in the source · abstract, characters 2078–2272

Title

Studies on the Causes of Rice Yield Decrease Resulting from Continual Direct Sowing Culture : II. In relation to phosphorus nutrition

Yoshimasa UEMURA; AKIRA MIYASAKA Japanese Journal of Crop Science 1973. doi:10.1626/jcs.42.116

Other claims from this paper (9)

Observationauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

Trees treated at 40 t/ha were expected to show yield decrease after reduced frost resistance.

Taxon: apple treeMalus domesticat0
Outcome: yielde7
Direction: decreasee7

Verbatim

t0
“shoots of apple tree”
✓ located verbatim in the source · title, characters 123–143

e7
“Such plants are subsequently subject to decrease in frost resistance, and as a result – to yield decrease”
✓ located verbatim in the source · abstract, characters 1068–1173

Title

Effect of different dosages of organic substrate on the catalase activity and the anthocyanins content in the one-year-old shoots of apple tree

Julya V. Guryanova; Viktor D. Khmyrov; Dmitry V. Guryanov; et al. BIO Web of Conferences 2020. doi:10.1051/bioconf/20202301008

Other claims from this paper (6)

Intervention effect Organic substrate at 10 t/ha and 25 t/ha increased frost resistance in both apple varieties.
Intervention effect Adding 25 t/ha organic substrate made biochemical processes proceed more smoothly in both apple varieties.
Intervention effect The 40 t/ha dose inhibited the regular course of biochemical processes in apple trees.
Intervention effect The 40 t/ha dose reduced frost resistance of apple trees.
Observation Respiratory processes proceeded uniformly, as indicated by catalase activity, in the apple shoots studied.
Observation Anthocyanins accumulated and decreased in line with the dormancy period of the plants.

Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Each one percent higher virus incidence corresponded to a 55 or 72 kg/ha yield decrease.

Taxon: wheatTriticum aestivumt0
Interactor: viruse0pathogen
Outcome: yield decreasee0
Direction: decreasee0
Value: 55 or 72 kg/hae0

Verbatim

e0
“for each 1% increase in virus incidence, there was a yield decrease of 55 or 72 kg/ha.”
✓ located verbatim in the source · abstract, characters 1873–1959

t0
“wheat”
✓ located verbatim in the source · title, characters 79–84

Title

Role of winter-active aphids spreading Barley yellow dwarf virus in decreasing wheat yields in a Mediterranean-type environment

Deborah J. Thackray; Laura T. Ward; Monica L. Thomas-Carroll; et al. Australian Journal of Agricultural Research 2005. doi:10.1071/ar05048

Other claims from this paper (18)

Observation BYDV-RMV and CYDV incidence was mostly low.
Observation Rhopalosiphum padi predominated among aphid vectors.
Intervention effect Insecticide sprays killed or repelled aphid vectors and stopped further virus spread.
Observation Migrant aphids entered wheat throughout winter at both sites.
Observation Peak colonising aphids ranged from 0 to 99 per transect.
Observation BYDV-PAV incidence ranged from 0.1 to 58% of wheat plants.
Observation Wheat yield ranged from 1.9 to 8.6 t/ha.
Observation Aphids arrived earlier at Site A.
Observation Virus spread and associated yield losses were greater at Site A.
Intervention effect Starting insecticide sprays eight weeks after emergence increased virus incidence versus starting at emergence.
Intervention effect Starting sprays eight weeks after emergence increased yield losses versus starting at emergence.
Intervention effect Delaying sprays beyond eight weeks had no additional effect on virus spread.
Mechanism Early yield losses were attributed entirely to infection because aphids remained scarce until 8–10 weeks after emergence.
Association BYDV-PAV incidence explained 81 or 91% of yield gap variation at Site A.
Association Virus incidence explained 88% of seed weight variation.
Association Virus incidence explained 69% of protein content variation.
Association Virus incidence did not explain seed screenings.
Observation Late virus spread at Site B caused no significant yield or quality losses.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

LaCl3 irrigation exacerbated the low-temperature decrease in tomato physiology and yield.

Taxon: tomatoSolanum lycopersicume1
Treatment: lanthanum chloride(LaCl3)e0
Outcome: Pn,root activity and yielde1
Direction: exacerbated the decreasee0

Not reportedComparator

Verbatim

e0
“Irrigation with ethylene glycol tetraacetic acid(EGTA) or lanthanum chloride(LaCl3) exacerbated the decrease”
✓ located verbatim in the source · abstract, characters 557–665

e1
“decrease of Pn,root activity and yield of tomato under LNT”
✓ located verbatim in the source · abstract, characters 498–556

Title

Effect of calcium on production and accumulation of photosythate in tomato under low night temperature stress

Li TianLai Jiangsu nongye xuebao 2012

Other claims from this paper (5)

Intervention effect Low night temperature inhibited tomato photosynthesis and reduced stomatal conductance, intercellular CO2 concentration, and transpiration rate.
Intervention effect Low night temperature increased tomato stomatal limitation.
Intervention effect Low night temperature decreased tomato yield and quality.
Intervention effect CaCl2 irrigation alleviated the low-temperature decreases in tomato Pn, root activity and yield.
Intervention effect EGTA irrigation exacerbated the low-temperature decrease in tomato physiology and yield.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

AB1.0% produced the least decrease in yield.

Taxon: wheatTriticum aestivumt0
Treatment: AB1.0%e0
Outcome: yielde0
Direction: least decreasee0
Comparator: Cke0

Verbatim

e0
“The highest proline (PRO), with the least decrease in yield, was found in the AB1.0% application, which is 205% more than Ck”
✓ located verbatim in the source · abstract, characters 1460–1584

t0
“wheat yield”
✓ located verbatim in the source · title, characters 135–146

t1
“Compared to the Ck”
✓ located verbatim in the source · abstract, characters 1215–1233

Title

Biochar innovations for sustainable agriculture: Acidification and zinc enrichment strategies to improve calcareous soil fertility and wheat yield

Salih Demirkaya; Coskun Gülser Soil and Water Research 2025. doi:10.17221/77/2024-swr

Other claims from this paper (13)

Intervention effect AB1.0% reduced soil pH by 0.15 units and was the most effective treatment.
Intervention effect B1.0% increased soil organic carbon by 13%.
Intervention effect B1.0% increased cation exchange capacity by 32%.
Intervention effect Acidified biochars produced the highest antioxidant enzyme activities.
Intervention effect Acidified biochars produced the lowest yields.
Intervention effect ABZn1.0% increased catalase activity by 32% relative to Ck.
Intervention effect ABZn0.5% increased ascorbate peroxidase activity by 56% relative to Ck.
Intervention effect ABZn0.5% increased glutathione peroxidase activity by 36% relative to Ck.
Intervention effect AB0.5% increased superoxide dismutase activity by 28% relative to Ck.
Intervention effect AB1.0% produced the highest proline level, 205% above Ck.
Intervention effect B treatments increased grain yield relative to Ck.
Intervention effect BZn treatments increased grain yield relative to Ck.
Intervention effect B1.0% produced the largest grain yield increase, 20% over Ck.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Reduced tillage did not decrease sugar beet yield.

Taxon: sugar beetBeta vulgaris subsp. vulgarist0
Treatment: reduced tillage systemse0
Outcome: yielde0
Direction: did not result in either a yield decreasee0

Not reportedComparator

Verbatim

e0
“The reduced tillage systems in sugar beet cultivation did not result in either a yield decrease or a worse technological quality of roots”
✓ located verbatim in the source · abstract, characters 1567–1704

t0
“sugar beets”
✓ located verbatim in the source · title, characters 84–95

Title

Effect of different tillage methods on the nutritional status, yield and quality of sugar beets

Renata Gaj; Jacek Przybył; Anna Budka; et al. Journal of Elementology 2015. doi:10.5601/jelem.2015.20.1.772

Other claims from this paper (9)

Observation At BBCH16/17, plants were well nourished with macroelements.
Observation At BBCH16/17, plants were deficient in microelements, mainly iron and zinc.
Mechanism The authors attributed microelement deficiency to slightly acidic to neutral soil reaction.
Intervention effect No-tillage tended to reduce leaf macronutrient content at BBCH 39/40 versus conventional tillage.
Intervention effect Reduced tillage did not worsen technological root quality.
Intervention effect Cultivation treatment had no significant effect on molassegenic compounds in beet roots.
Intervention effect Alpha-amino nitrogen content tended to decrease versus traditional cultivation.
Intervention effect Potassium content tended to decrease versus traditional cultivation.
Recommendation The authors conclude that cultivation technology is secondary when site conditions are optimal.

“yield decrease”

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