botanical · Yield · Solanum tuberosum (potato)

Positive and negative results39 papers: 35 positive, 4 negative or no effect

50 claims from these papers; 2 citations between them.

Papers here report positive and negative or no-effect results. No pair of them has been accepted in the claim-by-claim check.

How these papers cite each other

2 citations between these papers: 1 on the same side, 1 across the two sides.

Positive result
Negative result or no effect
Citation, pointing to the cited paper
Citation across the two sides
Larger circle: more citations overall

Years run left to right. Citations come from the papers’ OpenAlex reference lists. Hover a paper to bring forward its citations; click it to open the paper.

Papers reporting a positive result 35

Effect of Bitter Lupin Extract on Growth and Yield of Different Crops · 1987
- positive
  Extract spraying increased potato yield by 23%.
Effects of different plant protection treatments regulating late blight (Phytophthora infestans) in organic potato production · 2002
- positive
  Plant extract yield gains up to 15% were not significant.
An integrated approach for the management of potato cyst nematodes, Globodera rostochiensis and G. pallida in India · 2004
- positive
  P. fluorescens + neem cake + mustard intercrop improved yield in both potato cultivars.
- positive
  P. fluorescens + neem cake + mustard intercrop + carbofuran 3 G improved yield in both potato cultivars.
An Evaluation of Companion Planting and Botanical Extracts as Alternative Pest Controls for the Colorado Potato Beetle · 2006
- positive
  Potatoes sprayed with a 2% neem extract had higher yields than control plots and the other treatments.
  compared with control plots
cites 1 paper here
Efficacy of biological insecticides to control the Colorado potato beetle (Leptinotasara decemlineata) in organic farming · 2008
- positive
  The combined and temporarily shifted application of neem and B.t.t. increased potato yield considerably.
EFFECT OF CONIFEROUS EXTRACT ON POTATO PLANTS · 2009
- positive
  The extracts promoted potato yield.
Assessment of leaf extracts of three medicinal plants against late blight of potato in Kaghan valley, Pakistan · 2011
- positive
  Three medicinal plant extracts increased tuber and biological yield relative to control.
  compared with control
- positive
  Podophyllum hexandrum extract gave biological yield of 24.92 g per plant.
  compared with other treatments
- positive
  Podophyllum hexandrum extract gave tuber yield of 14.93 t/ha.
  compared with other treatments
EFFECT OF HUMIC ACID AND SEAWEED EXTRACTS ON GROWTH AND YIELD OF POTATO PLANT (Solanum tubersum L) DESIREE CV. · 2011
- positive
  Interactions among humic acid and seaweed extract treatments had a positive significant effect on yield quantitative characters.
Effect of a Neem preparation on reproduction of the nematode Globodera rostochiensis and growth of potato · 2012
- positive
  Soil-applied neem improved potato growth and yield, greatest at 1% Neem Azal.
Effects of seaweed saps on soil health and productivity of potato (Solanum tuberosum L.) · 2014
- positive
  The 10% Kappaphycus sap with RDF increased tuber yield by 9.38% compared with the control.
  compared with control (water spray +RDF)
Use of Different Melon and Watermelon Fruit Extracts as a Carbon Source and Gelling Agents in Potato · 2014
- positive
  Melon extract media increased the number of nodes per plant in potato.
Enhancement of Antioxidant Enzymes Activities, Drought Stress Tolerances and Quality of Potato Plants as Response to Algal Foliar Application · 2015
- positive
  Tuber yield was significantly increased in potato plants treated with algae extract compared with non-treated plants.
  compared with non-treated plants
A method to use very small size potato (Solanum tuberosum L.) tubers as seed · 2015
- positive
  Acacia leaf powder pelleting generally increased yield in both cultivars.
Effectiveness of potato cultivation using nanosized silica under conditions of Kamchatka krai · 2016
- positive
  Silica (powder) improved potato productivity by 10.7–16.4% (1.9–2.9 t/ha).
Field Testing of Efficacy of Three Environmentally Friendly Insecticides Against Colorado Potato Beetle (Leptinotarsa Decemlineata [Say], Coleoptera, Chrysomelidae) on Potato-Evaluation of the Effect on Yield · 2017
- positive
  In 2008 the highest potato yield was recorded in the Neem-Azal treatment, at 3.5 ± 0.7 t ha-1.
  compared with two other insecticide treatments
In vivo evaluation of garlic (Allium sativum) extract in the control of potato late blight disease caused by phytophthora infestans · 2017
- positive
  garlic extract spray increased potato biological and tuber yield versus unsprayed plots.
  compared with control (unsprayed plots)
Effect of organic manures and Pseudomonas fluorescens on early blight of Potato (Solanum tuberosum L.) · 2017
- positive
  Neem cake, FYM and foliar P. fluorescens sprays gave a potato yield of 274.73 q/ha.
ASSESSMENT OF THE IMPACT OF VERMICOMPOST AND PEAT EXTRACTS ON NUTRIENT ACCUMULATION IN TUBERS AND POTATO YIELD · 2018
- positive
  Foliar spray with organic extracts contributed to a mean 10% yield increase.
Yield-protective efficiency of biological and chemical potato protection againstPhytophtora infestans (Mont.) de Bary · 2018
- positive
  Individually applied plant extracts increased potato yield by 16-17%.
Efficacy of Selected Insecticides and Natural Preparations Against Leptinotarsa decemlineata · 2018
- positive
  Neem extract treatment gave significantly higher potato tuber yield than unprotected plots.
  compared with unprotected plots
Effect of aqueous extracts of Thevetia peruviana K. seeds on the control of late blight and pest insects of Solanum tuberosum L. in Cameroon · 2019
- positive
  Commercial yield under AETPS exceeded 7.5 t/ha versus 0 t/ha in controls.
  compared with controls (T0)
Screening of fungicides, essential oil and plant extract against early blight of potato caused by Alternaria solani · 2019
- positive
  Onion extract at 5% gave a potato yield of 47.52%.
  compared with control
- positive
  Garlic extract at 5% gave a potato yield of 15.4%.
  compared with control
- no effect
  Neem oil at 5% gave a potato yield of 2.38%, not significantly.
  compared with control
EFFECT OF NEEM LEAVES EXTRACT AND ORGANIC FERTILIZER IN THE PRODUCTIVITY AND QUALITY OF TWO POTATO CULTIVARS · 2019
- positive
  T8 significantly increased total yield relative to T1.
  compared with control treatment T1
Investigation of the biological effect of emulsion extraction of Scots pine on potato yield · 2021
- positive
  A single treatment of potato tubers with the emulsion extract of pine tree greens gave a positive result during germination and early yield in field studies.
Foliar Supplementation of Clove Fruit Extract and Salicylic Acid Maintains the Performance and Antioxidant Defense System of Solanum tuberosum L. under Deficient Irrigation Regimes · 2021
- positive
  CFE and/or SA increased potato tuber weight, number and yield under drought.
Efficacy of Some Botanical Extracts on the Control of Late Blight Disease in Experimental Potato Field · 2021
- positive
  Lawsonia inermis extract increased potato yield by 48.51%.
- positive
  Syzygium cumini leaf extract increased potato yield by 71.29% against untreated control.
  compared with untreated control
- positive
  The four moderately effective botanical extracts increased potato yield by 30% versus control.
  compared with control
Botanical pesticides, a potential ethnobotany Karo Regency to support food safety of the horticultural product · 2022
- positive
  Botanical pesticide increased potato yield.
Integrated management of late blight of potato in Pokhara, Kaski, Nepal · 2023
- positive
  Garlic extract increased potato tuber yield.
- positive
  Neem extract increased potato tuber yield.
Foliar Application with Plant-Derived Extracts Enhances Growth, Physiological Parameters, and Yield of Potatoes (Solanum tuberosum L.) · 2023
- positive
  Pre-harvest foliar application of plant extracts significantly enhanced growth and yield attributes of potatoes.
cited by 1 paper here
Impact of Foliar-Applied Plant Extracts on Growth, Physiological and Yield Attributes of the Potato (Solanum tuberosum L.) · 2023
- positive
  Foliar application of ANE and MLE gave the best growth and yield responses in potato.
- positive
  Pre-harvest foliar application of plant extracts significantly enhanced potato growth, physiological and yield attributes.
cites 1 paper here
Biological Control of Potato Bacterial Wilt ( Ralstonia solanacearum ) Using Selected Plant Extracts · 2023
- positive
  Weekly and biweekly methanol extracts of tobacco and wild marigold reduced potato postharvest yield losses during storage.
The Induction of Disease Resistance by Scopolamine and the Application of Datura Extract Against Potato (Solanum tuberosum L.) Late Blight · 2024
- positive
  Datura extract with Infinito enhanced potato yield in field experiments.
Evaluation of plant extracts and tissue culture cultivars in the control of potato late blight disease · 2024
- positive
  Plant extract treated potato fields had higher yields than controls.
  compared with control field
Efficacy of plant extracts and bio-fertilizers for the control of bacterial wilt and soft rot agents in potato · 2025
- positive
  Pomegranate peel extracts produced higher potato yield than assessed fertilizers.
  compared with other assessed mineral and organic fertilizers
Comparison of reduction of Verticillium wilt disease by using Talaromyces flavus microcapsule with the conventional method of farmers in potato fields in Hamedan province · 2025
- positive
  Liquid formulation of Talaromyces flavus applied by seed impregnation increased potato yield by 25.96% relative to control.
  compared with control
- positive
  The liquid and microcapsule powder formulations were the most effective of four tested Talaromyces flavus formulations for reducing disease and increasing yield in preliminary potato trials.
  compared with four aforementioned formulations
- positive
  Microcapsule powder formulation of Talaromyces flavus applied by seed impregnation increased potato yield by 27.08% relative to control.
  compared with control

Papers reporting a negative result or no effect 4

Feeding Inhibition and Mortality Effects of Neem-Seed Extract on the Colorado Potato Beetle (Coleoptera: Chrysomelidae) · 1988
- negative
  The 1.2% neem plus PBO treatment produced low tuber yield, suggesting phytotoxicity.
cited by 1 paper here
Management of Black scurf (Rhizoctomia solani) of potato through seed treatment with botanicals · 2009
- no effect
  Botanical treatment did not affect plant emergence or yield.
Efficacy of fungicide combinations, phosphoric acid and plant extract from stinging nettle on potato late blight management and tuber yield · 2012
- negative
  Stinging nettle extract gave the lowest tuber yield apart from untreated control.
  compared with other treatments
Studies on the effects of stinging nettle extract, phosphoric acid and conventional fungicide combinations on the management of potato late blight and tuber yield in the Highlands of Kenya · 2014
- negative
  Nettle extract plots had the lowest tuber yield apart from untreated controls.
  compared with corresponding treatments

A paper is on the positive side when any of its claims here is positive. Claims are grouped by organism, treatment and what was measured or targeted. Claims that compare genotypes are left out; a claim about lacking a nutrient counts the other way round in that nutrient’s question. “Results differ” marks a question where two model reviewers, reading both claims, accepted at least one pair of papers whose results differ.

botanical · Yield · Solanum tuberosum (potato)

How these papers cite each other

Papers reporting a positive result 35

Papers reporting a negative result or no effect 4

botanical on Solanum tuberosum (potato) against other targets

botanical · yield on other organisms