Search claims · PlantClaims

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Intercropping caused a 20% yield decrease in water melon.

Taxon: water melonCitrullus lanatuse2
Treatment: Intercroppinge2
Outcome: yielde2
Direction: decreasee2
Value: 20%e2

Not reportedComparator

Verbatim

e2
“Intercropping did not significantly influence bunch yield of plantain but it caused a 2–7 and 20% yield decrease in egusi melon and water melon respectively”
✓ located verbatim in the source · abstract, characters 472–628

Title

Productivity of Plantain (MusaAAB)-Melon Mixtures in South Western Nigeria

M. A. Jolaoso; I. M. Ojeifo; I. O.O. Aiyelaagbe Biological Agriculture & Horticulture 1996. doi:10.1080/01448765.1996.9754791

Other claims from this paper (6)

Intervention effect Intercropping with 5000 and 6666 melon plants ha−1 significantly decreased plantain leaf area.
Intervention effect Intercropping did not significantly influence plantain bunch yield.
Intervention effect Intercropping caused a 2–7% yield decrease in egusi melon.
Observation Land Equivalent Ratios of the plantain-melon intercropped plots were 1.67, 1.69 and 1.74.
Observation Cash advantage of plantain intercropped with 3333, 5000 and 6666 melon plants ha−1 was N61400, N65700 and N72100 ha−1.
Recommendation The authors propose the plantain-melon mixture as an alternative sustainable mixture to existing plantain-based systems.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

More than one post-sowing irrigation tended to decrease yield and water use efficiency.

Taxon: mustardt0
Treatment: More than one post-sowing irrigatione0
Outcome: yield and water use efficiencye0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“More than one post-sowing irrigation tended to decrease yield and water use efficiency”
✓ located verbatim in the source · abstract, characters 588–674

t0
“mustard”
✓ located after whitespace/quote normalisation · title, characters 44–51

Title

Effects of Irrigation Schedules on Yield of Mustard (Brassica Juncea)

S. S. Prihar; K. S. Sandhu; K. L. Khera; et al. Experimental Agriculture 1981. doi:10.1017/s0014479700011297

Other claims from this paper (6)

Intervention effect One irrigation three weeks after sowing gave maximum grain yield, 40% above no irrigation in 1973–74.
Intervention effect One irrigation three weeks after sowing increased grain yield 30% over no irrigation in 1976–77.
Intervention effect One irrigation three weeks after sowing gave maximum water use efficiency.
Observation Total water use with one irrigation averaged 31·2 cm.
Observation Water extraction from the 0–180 cm soil profile was 15·8 cm.
Association Crop soil water use decreased as post-sowing irrigation increased.

Intervention effectobservedoriginal resultnegativenot significant (as stated)measured

Claim · model-written summary

Ear shading caused a slightly greater yield decrease for Proctor and Herta, without significant varietal differences.

Treatment: shading the earse0
Outcome: grain yielde0
Direction: decreasee0

Not reportedTaxonComparator

Verbatim

e0
“the decrease in grain yield by shading the ears was slightly greater for Proctor and Herta, the differences were not significant.”
✓ located verbatim in the source · abstract, characters 1652–1781

Title

Physiological Causes of Differences in Grain Yield between Varieties of Barley

D. J. WATSON; GILLIAN N. THORNE; S. A. W. FRENCH Annals of Botany 1958. doi:10.1093/oxfordjournals.aob.a083616

Other claims from this paper (19)

Association Proctor and Herta yielded 10—15 per cent more grain than Plumage-Archer without nitrogen fertilizer.
Intervention effect Nitrogen increased the varietal grain yield difference to about 30 per cent.
Intervention effect Higher nitrogen caused Plumage-Archer lodging without increasing its yield.
Observation Proctor and Herta remained standing under higher nitrogen.
Observation The three varieties had similar leaf-area index, net assimilation rate and total dry weight before ear emergence.
Association After ear emergence Herta had a smaller leaf-area index than Proctor and Plumage-Archer.
Observation Shaded-ear pot experiment found nearly equal dry matter contribution per leaf area across varieties.
Mechanism The authors attributed higher yield to photosynthesis by the ears.
Association In pots, Proctor and Herta yielded only about 6 per cent more than Plumage-Archer.
Association Field ear sizes were greater for Proctor and Herta than Plumage-Archer.
Association Ear dry weight at emergence was greater in the higher yielding varieties.
Observation Herta ears may have higher photosynthetic efficiency.
Association Plumage-Archer absorbed more potassium.
Association Herta absorbed less phosphorus than the other varieties.
Observation About a quarter of final nitrogen was absorbed after ear emergence.
Observation A third of phosphorus was absorbed after ear emergence.
Observation Potassium content was nearly maximal at ear emergence and later decreased.
Observation Ear photosynthesis contributed 26 per cent of grain dry matter, including 10 per cent from awns.
Observation Flag-leaf lamina, sheath and peduncle supplied 59 per cent of grain dry matter, and lower shoots supplied 15 per cent.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

AFI14 tended to decrease grain yield versus EFI.

Taxon: cornZea mays subsp. mayst0
Treatment: AFI14e0
Outcome: grain yieldt1
Direction: decreasee0
Comparator: EFIe0

Verbatim

e0
“it tended to decrease under AFI14 as compared with EFI”
✓ located verbatim in the source · abstract, characters 648–702

t0
“corn”
✓ located verbatim in the source · title, characters 129–133

t1
“Results indicated that grain yield increased under the AFI7 treatment”
✓ located verbatim in the source · abstract, characters 569–638

Title

Impact of alternate furrow irrigation with different irrigation intervals on yield, water use efficiency, and economic return of corn

Awad Abd El-Halim Chilean journal of agricultural research 2013. doi:10.4067/s0718-58392013000200014

Other claims from this paper (7)

Intervention effect AFI7 increased grain yield versus EFI.
Intervention effect AFI7 saved approximately 7% irrigation water versus EFI.
Intervention effect AFI14 saved approximately 17% irrigation water versus EFI.
Intervention effect AFI7 improved crop water use efficiency and irrigation water productivity versus EFI.
Intervention effect AFI14 improved crop water use efficiency and irrigation water productivity versus EFI.
Intervention effect AFI7 increased benefit-cost ratio and net return.
Recommendation Authors recommend AFI7 when low cost water is available without extra delivery expense.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Yield started to decrease considerably in later years without fertilization.

Taxon: winter wheat and summer maizeTriticum aestivum Zea mayse0
Treatment: without fertilizatione2
Outcome: yielde2
Direction: decrease considerablye2

Not reportedComparator

Verbatim

e0
“comprising winter wheat and summer maize as an annual rotation”
✓ located verbatim in the source · abstract, characters 479–541

e2
“The yield did not decrease in the first year without fertilization but started to decrease considerably in later years”
✓ located verbatim in the source · abstract, characters 1046–1164

Title

Long-term legacy impacts of nitrogen fertilization on crop yield, nitrate accumulation, and nitrogen recovery efficiency

Shuang Lei; Sajjad Raza; Annie Irshad; et al. European Journal of Agronomy 2025. doi:10.1016/j.eja.2025.127513

Other claims from this paper (11)

Intervention effect N fertilization increased grain yield compared with the control.
Intervention effect DCD addition caused additional increases in grain yield, mainly at 500 kg N ha-1.
Intervention effect Yield did not decrease in the first year without fertilization.
Intervention effect N fertilization increased grain N uptake by more than 100 % compared with the control in fertilized years and the first unfertilized year.
Intervention effect Grain N uptake decreased strongly in the second year without fertilization.
Intervention effect Cumulative fertilizer N recovery did not differ among N fertilized treatments during fertilized years.
Intervention effect Cumulative fertilizer N recovery increased strongly when N uptake in unfertilized years was incorporated.
Intervention effect Cumulative fertilizer N recovery in N340 + DCD increased from 37 %–44 % in fertilized years to 74 %–80 % in unfertilized years.
Observation A residual nitrate accumulation of 237–489 kg N ha-1 accumulated in the soil profile after two years of fertilization.
Intervention effect Residual N accumulation decreased by 31 %–41 % in the first unfertilized year.
Observation Soil N accumulation became less than 60 kg ha-1 after four years of cropping without fertilization, with no difference among treatments including control.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Paclobutrazol did not decrease tart cherry yield in any season.

Taxon: tart cherryt0
Treatment: paclobutrazole5
Outcome: yielde5
Direction: no_changeinferrede5

Not reportedComparator

Verbatim

t0
“paclobutrazol-treated tart cherry trees”
✓ located verbatim in the source · title, characters 65–104

e5
“In no season did paclobutrazol decrease yield”
✓ located verbatim in the source · abstract, characters 1607–1652

Title

Growth, reproductive development and dormancy characteristics of paclobutrazol-treated tart cherry trees

R. H. Walser; T. D. Davis Journal of Horticultural Science 1989. doi:10.1080/14620316.1989.11515975

Other claims from this paper (12)

Intervention effect A single spring paclobutrazol application decreased shoot growth in tart cherry trees during the first and second seasons after treatment.
Intervention effect Paclobutrazol increased the proportion of flower buds to vegetative buds in tart cherry during the first dormant period.
Intervention effect Paclobutrazol advanced the date of full bloom in tart cherry by two to four days.
Intervention effect Paclobutrazol decreased the growing degree hours required to reach full bloom by 700–900 in tart cherry trees.
Intervention effect Paclobutrazol tended to decrease rest intensity in both terminal and lateral buds of tart cherry.
Intervention effect In some tart cherry trees, paclobutrazol hastened the completion of rest.
Observation In tart cherry, lateral buds completed rest about one week before terminal buds regardless of treatment.
Observation Rest was completed in tart cherry buds at least by early December.
Intervention effect Flower buds from paclobutrazol-treated tart cherry trees had mid-winter T50 values about 2°C higher than controls.
Intervention effect Paclobutrazol increased flower bud frost damage in tart cherry by about 50% compared with controls during a severe winter cold spell in 1988.
Intervention effect In one season, paclobutrazol-treated tart cherry trees showed a dramatic three-fold yield increase.
Intervention effect Paclobutrazol had either no effect or slightly increased individual cherry weight in tart cherry, depending on the season.

Intervention effectobservedoriginal resultnegativesimulated

Claim · model-written summary

For winter wheat, a gradual increase in air temperature resulted in a simulated yield decrease.

Taxon: winter wheatTriticum aestivume0
Treatment: gradual increase in air temperaturee0
Outcome: yielde0
Direction: decreasee0

Not reportedComparator

Verbatim

e0
“For winter wheat, a gradual increase in air temperature resulted in a yield decrease”
✓ located verbatim in the source · abstract, characters 751–835

Title

Potential impact of climate change on selected agricultural crops in north‐eastern Austria

Vesselin Alexandrov; Josef Eitzinger; Vesna Cajic; et al. Global Change Biology 2002. doi:10.1046/j.1354-1013.2002.00484.x

Other claims from this paper (9)

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

One simulated defoliation did not decrease cassava root yield.

Taxon: cassavaManihot esculentae0
Treatment: A single defoliatione0
Interactor: Z. variegatusZonocerus variegatuse0pest
Outcome: root yielde0
Direction: does not decreasee0

Not reportedComparator

Verbatim

e0
“A single defoliation of cassava (to simulate Z. variegatus feeding damage) does not decrease root yield, but additional ones do.”
✓ located verbatim in the source · abstract, characters 3181–3309

Title

Control of the variegated grasshopper Zonocerus variegatus (L.) on cassava

W. W. D. Modder TSpace 1994

Other claims from this paper (10)

Observation Early instars aggregate off farm, while later instars and adults move to crops when food becomes scarce.
Mechanism Aggregated feeding by larger grasshopper instars causes cassava leaves to wilt and lose HCN quickly.
Recommendation Eradication of Chromolaena odorata probably will not control the grasshopper.
Observation Chemical control is described as only short term effective and environmentally damaging.
Intervention effect Chemical sprays against the grasshopper kill parasitoids introduced for cassava mealybug control.
Intervention effect Exposing egg pods at the soil surface produced large grasshopper population reductions.
Intervention effect Fungal spores in kerosene and peanut oil killed 70-95% of field grasshopper populations.
Intervention effect A strain isolated from the grasshopper caused 90% mortality in 7-9 days in the laboratory.
Intervention effect Grasshoppers leaving spore baited traps died within 10 days, up to 30 m away.
Intervention effect Additional defoliations decreased cassava root yield.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Chlorsulfuron did not decrease mature grain nutrient concentrations or grain yield.

Taxon: wheatTriticum aestivumt0
Treatment: Chlorsulfuron treatmente0
Outcome: nutrient concentrations in mature grain or grain yielde0
Direction: did not decreasee0

Not reportedComparator

Verbatim

e0
“Chlorsulfuron treatment did not decrease nutrient concentrations in mature grain or grain yield”
✓ located verbatim in the source · abstract, characters 639–734

t0
“wheat”
✓ located verbatim in the source · title, characters 70–75

Title

The impact of chlorsulfuron and diclofop-methyl on nutrient uptake by wheat.

LD Osborne; AD Robson; DG Bowran Australian Journal of Agricultural Research 1993. doi:10.1071/ar9931757

Other claims from this paper (11)

Intervention effect Chlorsulfuron decreased wheat shoot and root weights and root length in glasshouse experiments.
Intervention effect Chlorsulfuron decreased phosphorus uptake, particularly with low phosphorus supply.
Intervention effect Chlorsulfuron decreased potassium uptake.
Intervention effect Nitrogen, calcium and magnesium uptake was unaffected.
Intervention effect Field chlorsulfuron reduced shoot element concentrations during early growth by up to 30%.
Observation The reduction in shoot element concentrations faded as wheat aged.
Association Kulin was more sensitive to chlorsulfuron than Reeves.
Intervention effect Diclofop-methyl had little effect on shoot nutrient concentrations.
Intervention effect Diclofop-methyl reduced zinc and copper concentrations during vegetative growth.
Intervention effect Diclofop-methyl reduced copper concentration in mature Kulin grain.
Intervention effect Herbicides reduced uptake of diffusion-moved nutrients more than mass-flow nutrients.

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Nitrogen did not decrease legume yield.

Taxon: tropical grass-legumet0
Treatment: Nitrogen fertilizere0
Outcome: yield of legumee0
Direction: did not decreasee0

Not reportedComparator

Verbatim

e0
“Nitrogen fertilizer did not decrease the yield of legume”
✓ located verbatim in the source · abstract, characters 613–669

t0
“tropical grass-legume”
✓ located verbatim in the source · title, characters 86–107

Title

Effects of nitrogen fertilizer applied in autumn and winter on milk production from a tropical grass-legume grazed at four stocking rates

RT Cowan; TH Stobbs Australian Journal of Experimental Agriculture and Animal Husbandry 1976. doi:10.1071/ea9760829

Other claims from this paper (7)

Intervention effect Nitrogen increased pasture yield, particularly at high stocking rates.
Intervention effect Nitrogen increased milk yield, particularly at high stocking rates.
Observation Mid-autumn to spring milk gains accounted for nearly all annual gains.
Intervention effect Nitrogen reduced pasture legume content in year two.
Association Nitrogen response of nonlegumes increased with stocking rate.
Association Lower pasture dry matter availability restricted fat-corrected milk yield.
Intervention effect At equal dry matter yield, fertilized pasture gave higher fat-corrected milk yield.

“yield decrease”

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