nitrogen · Yield · Solanum tuberosum (potato)

THE EFFECT OF VARYING LEVELS OF NITROGEN, PHOSPHORUS AND POTASSIUM AND MANURE ON THE YIELD AND STARCH CONTENT OF POTATOES · 1958

• positive
  Increased nitrogen levels increased potato yields in proportion to the amounts applied.

cited by 1 paper here

Effect of Alfalfa on the Nitrogen and Phosphorus Requirements of Crops · 1963

• positive
  In the nonlegume rotation, N fertilization increased yields of all crops.

THE RELATION OF SOIL TEST VALUES TO FERTILIZER RESPONSE BY THE POTATO: II. NITRATE PRODUCTION AND NITROGENOUS FERTILIZER REQUIREMENTS · 1963

• positive
  Potato yield approached its maximum at 200 pounds/acre applied N across low, medium and high soil nitrate production.

cites 1 paper here

Effects of nitrogen on yield and chlorophyll of potato (Solanum tuberosum L.) cultivars · 1970

• positive
  Total yield was maximum at 200 kg N/ha.

cites 1 paper herecited by 1 paper here

The effect of CCC, nitrogen and potassium on the growth and yield of two varieties of potatoes · 1971

• positive
  Delayed or split nitrogen application increased tuber yield versus seed bed application.

  compared with nitrogen applied in the seed bed

cited by 3 papers here

EFFECTS OF NITROGEN, PHOSPHORUS, POTASSIUM, AND MANURE FACTORIALLY APPLIED TO POTATOES IN A LONG-TERM STUDY · 1973

• positive
  N, P and K applications produced potato yield responses.

cites 1 paper herecited by 1 paper here

Effect of nitrogen fertilizer applied to the seed crop on the subsequent growth of early potatoes · 1974

• positive
  Maris Peer seed from 100 kg N/ha crops yielded 24% more than seed from 201 kg N/ha crops.

  compared with 201 kg N/ha

• positive
  Maris Peer seed from 100 kg N/ha crops yielded 10% more than seed from 0 kg N/ha crops.

  compared with 0

EFFECTS OF APPLIED NITROGEN ON YIELDS, TUBER SIZES, AND SPECIFIC GRAVITIES OF TWO POTATO CULTIVARS · 1977

• positive
  Applied N significantly increased potato yield at all sites and years for each cultivar.
• positive
  Applied nitrogen up to 134 kg/ha increased the percentage yield of A-size tubers.

cites 1 paper here

Effect of growth regulators and nitrogen on the growth, number and size of seed tubers and yield of potatoes · 1985

• positive
  Nitrogen increased seed and total yield.

cites 1 paper here

Study of various NH₄⁺/NO₃⁻mixtures for enhancing growth of potatoes · 1993

• positive
  Mixed nitrogen significantly increased tuber dry weight relative to either nitrogen form alone.

  compared with single NH4+ or NO3- form

cited by 2 papers here

Berry and True Potato Seed Production in Relation to Nitrogen Fertilization* · 1994

• positive
  Higher nitrogen doses significantly increased 100 seed weight of Kufri Jyoti.
• positive
  Higher nitrogen doses significantly increased 100 seed weight of Kufri Lalima.

Potato Seed Piece Calcium can Influence Tuber Yield · 1996

• positive
  Calcium nitrate-treated seed tubers gave higher yields than ammonium nitrate and N-Hib in Dark Red Norland potato.

  compared with ammonium nitrate and N-Hib

• positive
  Calcium nitrate-treated seed tubers gave higher yields than ammonium nitrate and N-Hib in Atlantic potato.

  compared with ammonium nitrate and N-Hib

• no effect
  The calcium nitrate yield advantage did not hold for Superior potato.

  compared with ammonium nitrate and N-HibNo difference from an alternative treatment

The influence of solid urban waste compost and nitrogen‐mineral fertilizer on growth and productivity in potatoes · 1997

• positive
  Potato productivity responded strongly and positively to N-mineral fertilizer application.

Nitrogen Nutrition of Potato Cultivars Differing in Maturity · 1999

• positive
  Tuber yield rose up to intermediate nitrogen doses of 60 kg ha −1 in 1990 and 120 kg ha −1 in 1991.

cited by 1 paper here

Basal fertiliser application method, tuber initiation nitrogen, foliar NPK and the tolerance of potatoes to infection by the potato cyst nematodes Globodera rostochiensis and G. pallida · 1999

• positive
  Split nitrogen plus foliar N yielded significantly more than all-at-planting N plus foliar N.

  compared with application of 240 kg N ha ‐1 at planting plus foliar N

• positive
  Split nitrogen plus foliar N achieved larger tuber yield than the same nitrogen schedule without foliar N.

  compared with same nitrogen programme without foliar N

cites 1 paper here

589 Calcium Application at Preemergence and during Bulking May Improve Tuber Quality and Grade · 2000

• positive
  PreCaN or PreCUC followed by PostCUC gave the greatest yield of 112–168-g tubers.

Effects of nitrogen pre-treatment of transplants from in vitro produced potato plantlets on transplant growth and yield in the field · 2001

• positive
  In one experiment, higher nitrogen pre-treatment resulted in a significantly higher yield.

cited by 1 paper here

Evaluation of Polyolefin-coated Urea for Potato Production on a Sandy Soil · 2001

• positive
  Gross return was 10% higher with POCU than with urea.

  compared with urea

• no effect
  Total yield was not affected by N application rate, regardless of N source.
• no effect
  Net return showed no significant change across POCU application rates.

cited by 3 papers here

Effect of sources and levels of nutrients on growth and yield behaviour of pop corn (Zea mays) and potato (Solanum tuberosum) sequence · 2001

• positive
  Direct FYM at 90 kg N/ha gave higher potato growth and yield traits than FYM at 60 kg N/ha and control.

  compared with FYM equivalent 60 kg N/ha and control

Performance of potato (Solanum tuberosum) + wheat (Triticum aestivum) relay cropping system · 2001

• positive
  Nitrogen application to wheat increased the tuber yield of potato.

Interactive Effect of Nitrogen and Potassium on Dry Matter and NutrientPartition in True Potato Seed Mother Plants · 2001

• positive
  N increased fresh tuber yield.
• no effect
  Nitrogen had no significant effect on shoot dry matter yield.

Reduction of potato scab and verticillium wilt with ammonium lignosulfonate soil amendment in four Ontario potato fields · 2002

• positive
  Ammonium lignosulfonate significantly increased total tuber yield by 2.5 times at site G in 2000.
• no effect
  ALS treatment had no effect on tuber yield at the other sites.

Potassium and integrated nutrient management in potato. · 2002

• positive
  In 1998 a maximum potato yield of 40.8 t/ha was obtained at Kufri (Shimla) with 180 kg N, 100 kg P2O5 and 150 kg K2O per hectare, against 14.6 t/ha at the control plots.

  compared with control plots

cited by 2 papers here

Influence of different organic mineral fertilization on the yield structure and on changes of soil properties · 2002

• positive
  The highest N dose to potatoes (200 kg.ha-1) gave the highest tuber yields.

Effect of nitrogen and phosphorus combination on late blight disease and potato yield · 2004

• positive
  Potato yield was highest with high nitrogen and half as much phosphorus.

Influence of nitrogen form on yield and nitrate content of subirrigated early potato · 2004

• positive
  Nitrate-fed potato plants yielded almost three times as many tubers as ammonium-fed plants.

  compared with ammonium‐fed plants

• negative
  Ammonium-fed potato plants had lower tuber yield than mixed-form plants in winter–spring.

  compared with mixed form

• negative
  Ammonium-fed potato plants had lower tuber yield than 100% nitrate nitrogen plants in winter–spring.

  compared with 100% NO 3 ‐N

cites 2 papers here

IMPACT OF VERIFICATION TRIAL ON FARMERS’ ADOPTION OF PEST MANAGEMENT PRACTICES IN POTATO · 2005

• positive
  Leaf spot management improved benefit-cost ratio from 2.0 to 2.3.

  compared with control plot with farmers’ practices

• positive
  Leaf spot management increased potato yield by 24.7 q/ha.

  compared with control plot with farmers’ practices

Performance of organic and inorganics in potato-garlic sequence under zero tillage in the mid hills of Himachal Pradesh · 2007

• positive
  Integrated use of paddy or wheat residues at 2.5 t/ha with 100% recommended NPK improved potato and garlic yields.

Nitrogen fertilization and yield formation of potato during a short growing period · 2008

• positive
  Nitrogen application substantially increased haulm dry matter accumulation.
• positive
  The high rate of 120 kg N ha-1 resulted in a significant increase in dry matter accumulation.

Italian Ryegrass Management Effects on Nitrogen Supply to a Subsequent Potato Crop · 2009

• positive
  High ryegrass nitrogen application increased subsequent unfertilized potato tuber yield, mean tuber weight, plant dry matter yield and nitrogen uptake.

Influences of Nitrogen Fertilizer on Biochemical Attributes of Potato (Solanum tuberosum L.) in Relation to Yield Potential · 2010

• positive
  Tuber weight was highest at 150 kg nitrogen per hectare.
• positive
  Applying 150 kg nitrogen per hectare gave the best biochemical traits, nutrient uptake, yield and yield components.

YIELD AND QUALITY RESPONSE OF CRISPING POTATOES (SOLANUM TUBEROSUML.) TO APPLIED NITROGEN · 2010

• positive
  Potato yield responded significantly to the rate of applied nitrogen and to variety on all sites.

EFFECT OF GROWTH DURATION, N APPLICATION AND ROW SPACING ON PRODUCTIVITY, PROFITABILITY and PROCESSING QUALITY OF POTATO · 2011

• positive
  Applying 270 kg N/ha in two equal splits at planting and earthing-up gave 7.5% more returns than 3 splits plus a foliar spray of urea.

  compared with 3 splits + 1 foliar spray of urea

• no effect
  N application time did not affect total or process-grade tuber number, yield or process-grade tuber weight of potato.

Efficiency of Controlled‐Release Urea for a Potato Production System in Quebec, Canada · 2011

• positive
  Yields were higher with CRU at 150 kg N/ha than with CAN at 150 or 200 kg N/ha in potato.

  compared with 150CAN or 200CAN

cites 3 papers herecited by 1 paper here

Influence of nitrogen fertilization and plant density on yield and nitrogen use efficiency of the potato (Solanum tuberosum L.) · 2011

• positive
  Total tuber yield increased with nitrogen rate up to 150 kg N ha -1, reaching 20.5 t ha -1, relative to control.

  compared with control

EFFECT OF NITROGEN RATES ON CRITICAL PERIOD FOR WEED CONTROL IN POTATO · 2011

• positive
  Potato yield was highest in weed-free plots at 100 kg N ha -1.

3414+1 Fertilizer Efficiency Experiment for Potato · 2011

• positive
  The stated fertilizer combination produced the highest potato yield, 13 873.5 kg/hm2.
• positive
  The stated fertilizer combination produced the highest net income per area, 28 417.5 Yuan/hm2.

Influence of nutrient sources on growth, productivity and economics of baby corn (Zea mays)-potato (Solanum tuberosum)-mungbean (Vigna radiata) cropping system · 2012

• positive
  The bio-compost fertilizer treatment produced potato tuber yield 49.3% above control.

  compared with control

• positive
  Residual FYM fertilizer gave maximum potato growth and tuber yield, whereas 100% NPK gave the lowest values.

  compared with 100% NPK

• positive
  The bio-compost fertilizer treatment gave maximum potato tuber yield of 24.2 t/ha, 10.5% above 100% NPK.

  compared with 100% NPK

Response of potato to nitrogen and potassium in alluvial soil of South-Western plain zone of Uttar Pradesh · 2012

• positive
  The highest tuber yield (30.54 t/ha) with the highest N and K levels was nearly double the control yield (11.77 t/ha).

  compared with control

• positive
  Dry matter yield of potato showed a similar increasing trend with N and K levels.
• positive
  Nitrogen and potassium levels significantly increased potato tuber yield over control.

  compared with control

Productivity and Soil Health of Potato (Solanum tuberosum L.) Field as Influenced by Organic Manures, Inorganic Fertilizers and Biofertilizers under High Altitudes of Eastern Himalayas · 2012

• positive
  Half inorganic NPK plus half organic RDN improved tuber yield, nutrient uptake, soil fertility and returns relative to other treatments.

  compared with other treatments

• positive
  Half inorganic NPK plus half poultry manure RDN yielded 22.73 t/ha, 228% above control.

  compared with control

cited by 1 paper here

Nitrogen and Potassium Fertilization Responses of Potato (Solanum tuberosum) cv. Spunta · 2012

• positive
  Higher nitrogen rates increased tuber number.
• negative
  495 kg N ha–1 significantly reduced potato harvest index relative to 330 kg N ha–1.

  compared with 330 kg N ha–1

cited by 1 paper here

Study on Optimum Fertilization Model of Potato Intercropped with Sugarcane · 2012

• positive
  Combined low nitrogen with mid-high potassium and phosphorus fertilizer gave higher potato yield.

RESPONSE OF POTATO PLANTS GROWN IN CLAY SOIL TO ANHYDROUS AMMONIA RATES AND FOLIAR APPLICATION OF ZN AND MN · 2012

• positive
  Higher anhydrous ammonia significantly increased tuber dry weight and fresh and dry tuber yield.

  compared with low anhydrous ammonia level (100 kgN/ fed.)

cites 1 paper here

EFFECT OF POTASSIUM NUTRITION ON POTATO YIELD, QUALITY AND NUTRIENT USE EFFICIENCY UNDER VARIED LEVELS OF NITROGEN APPLICATION · 2012

• positive
  Potassium and nitrogen increased large and medium tuber grade yield.

cites 1 paper here

INFLUENCE OF IRRIGATION, PLANT RESISTANCE STIMULATOR BION 50 WG AND NITROGEN FERTILIZATION ON YIELDS OF VERY EARLY POTATOES · 2012

• positive
  Under irrigation, increasing nitrogen up to 120 kg N ha-1 increased total and commercial tuber yields.
• negative
  Without irrigation, nitrogen increased yield up to 80 kg ha-1.

  About lacking this nutrient, so it counts the other way round

The effect of urea with urease inhibitors and urea on yield and nitrate content in potato tubers · 2013

• positive
  The 100% urea variant gave the highest average potato yield, 40.95 t/ha, significantly above the other fertilisation variants.

  compared with other variants of fertilization

• no effect
  Urea without urease inhibitor gave 37.62 t/ha, not significantly higher than urea with urease inhibitor.

  compared with the urea with the urease inhibitorNo difference from an alternative treatment

Manure and Paper Mill Sludge Application Effects on Potato Yield, Nitrogen Efficiency and Disease Incidence · 2013

• positive
  Combining organic amendments with mineral nitrogen increased potato yields and nitrogen uptake to levels comparable to mineral nitrogen fertilizer.

  compared with mineral N fertilizer treatments (150 kg N ha−1)

Influence of Tomato and Paprika Paste Residues on Soil Properties and Potato Growth · 2013

• positive
  Mineral K plus waste N and P gave the greatest potato tuber yield.

Effects of non-chemical and chemical fertilizers on potato (Solanum tuberosum L.) yield and quality · 2013

• positive
  Nitragin inoculation, urea and two HB-101 sprays gave the most tubers per plant.

  compared with non inoculated

• positive
  Nitragin inoculation, urea and two HB-101 sprays gave the highest tuber yield.

  compared with non inoculated

Effect of nitrogen fertilizer and vermicompost on vegetative growth, yield and NPK uptake by tuber of potato (Agria CV.) · 2013

• positive
  Combining nitrogen and vermicompost significantly improved growth, yield and tuber NPK content over either alone.

  compared with nitrogen and/or vermicompost alone treatments

• positive
  The highest total tuber weight, number and diameter occurred with 150 kg nitrogen per hectare.

Effects of Nitrogen Levels on Phytophthora infestans Resistance and Tuber Yield of Potato Plant · 2013

• positive
  Moderate nitrogen gave the highest tuber yield.

Study on Optimum Fertilization Model of Potato Intercropped with Sugarcane · 2013

• positive
  Low nitrogen with medium to high potassium and phosphorus gave higher potato yield.

Effect of nitrogen rate and fungicide or compost tea application ontuber yield and quality of potato cultivars · 2013

• positive
  Compost tea with 90 kg N/ha increased Russet Norkotah medium-tuber yield in 2007.
• positive
  Compost tea with 134 kg N/ha increased Russet Norkotah medium-tuber yield in all three years.

Crop water use, nutrient content and uptake as influenced by irrigation and nitrogen management in potato (Solanum tuberosum) – maize (Zea mays) cropping system · 2013

• positive
  Integrated nitrogen supply of 120 kg N (urea) + 30 kg N (FYM)/ha significantly improved yield, nutrient uptake and consumptive use in the potato-maize system.

Effectiveness of nitrogen fertilization and application of microbial preparations in potato cultivation · 2014

• positive
  Each increase in applied nitrogen dose increased potato productivity compared with a smaller dose.

  compared with a smaller dose

cited by 2 papers here

The effect of nitrogen supply on potato yield, tuber size and pathogen resistance in Solanum tuberosum exposed to Phytophthora infestans · 2014

• positive
  N2 gave the highest potato tuber yield without pathogen exposure.
• positive
  N2 gave the largest potato tubers without pathogen exposure.

Agro-techniques for increasing yield potential of potato (Solanum tuberosum) under drip irrigation · 2014

• positive
  The combined 75% inorganic and 25% poultry-manure nitrogen with PSB and Azotobactor gave the significantly highest potato yield attributes and total tuber yield

cites 1 paper here

Effect of nitrogen fertilization and microbial preparations on potato yielding · 2014

• positive
  Growing nitrogen doses increased the number of tubers per stem only up to 60 kg N/ha
• positive
  Each nitrogen dose up to 180 kg N/ha markedly increased average tuber weight

cites 2 papers herecited by 2 papers here

EFFECT OF NITROGEN FERTILIZATION AND SOME FOLIAR APPLIED MICRONUTRIENTS ON POTATO YIELD AND NITROGEN USE EFFICIENCY. · 2014

• positive
  Increasing nitrogen levels significantly increased average tuber weight, total tuber yield and shoot dry yield of potato.

Influence of bio-organic fertilizers on phosphatase activation, some yield composting and tuber quality of potato yield · 2014

• positive
  Half-rate phosphorus with solid bio-organic fertilizer, with or without foliar liquid fertilizer, gave the highest significant tuber weight and yields versus control.

  compared with control treatment

Evaluation of oleiferous brassicas, staggered sowing and fertility level for improvement in potato (Solanum tubersosum)-based intercropping systems · 2014

• positive
  oil yields increased with nitrogen level up to 150 kg N/ha.
• positive
  Tuber yield increased with nitrogen level up to 150 kg N/ha.

Optimization of Seed Potato Specific Density, Starch and Dry Matter Contents and Tuberization Capacity of Resultant Plants Through Integrated Irrigation, Nitrogen and Phosphorus Management · 2015

• positive
  Integrating nitrogen up to 112.5 kg N/ha with 65% irrigation increased resulting tuber number by 3.4 and 5.4.

The effect of green manures and nitrogen fertilizer on yield, yield components and nitrate accumulation of potato tuber · 2015

• positive
  Clover with 75% nitrogen increased potato tuber yield by 33% versus control.

  compared with control

• positive
  Vetch with 100% recommended nitrogen increased mean potato tuber weight by 17% versus control.

  compared with control

• positive
  Clover with 75% recommended nitrogen increased tubers per potato plant by 34% versus control.

  compared with control

Response of Potato ( Solanum tuberosum L.) Yield and Yield Components to Nitrogen Fertilizer and Planting Density at Haramaya, Eastern Ethiopia · 2015

• positive
  Nitrogen up to 110 kg N/ha improved total tuber number.
• positive
  Nitrogen up to 110 kg N/ha improved large-sized tuber yield.
• positive
  Nitrogen up to 110 kg N/ha improved tuber yield.

cited by 3 papers here

Changes in morpho-physiological traits and gross income of potato (Solanum tuberosum L.) in response to different fertilizers · 2015

• positive
  Farm manure plus 50% urea was among the treatments with the highest tuber yield.

  compared with fertilizer treatments

• positive
  Farm manure plus 50% urea gave the highest gross income.

  compared with the treatments

• positive
  100% urea was among the treatments with the highest tuber yield.

  compared with fertilizer treatments

Regulation Effects of Water and Nitrogen on the Source-Sink Relationship in Potato during the Tuber Bulking Stage · 2016

• positive
  Well-watered, sufficient nitrogen, and well-watered combined with sufficient nitrogen increased potato yield, mainly by enhancing source capacity.

cited by 2 papers here

Impact of nitrogen nutrition on productivity and nutrient use efficiency of potato (Solanum tuberosum L.) In an inceptisol of west Bengal, India · 2016

• positive
  Tuber yield of Kufri Shailja and Kufri Jyoti increased significantly up to 225 kg N ha-1 and decreased with further nitrogen.
• positive
  Yield of Kufri Himalini increased with nitrogen up to 300 kg N ha-1.
• positive
  Average potato yield increased significantly with nitrogen supply up to 225 kg N ha-1 and then tended to decrease slightly.
• no effect
  The yield increment of Kufri Himalini from 225 to 300 kg N ha-1 was not significant.

  compared with 225 kg N ha-1No difference from an alternative treatment

cites 1 paper here

Yield and Physiological Response of Potatoes Indicate Different Strategies to Cope with Drought Stress and Nitrogen Fertilization · 2016

• positive
  Nitrogen application could alleviate the drought-induced reduction in tuber yield and total biomass.

Effects of nitrogen and phosphorus fertilizer on crop yields in a field pea-spring wheat-potato rotation system with calcareous soil in semi-arid environments · 2016

• positive
  N treatment potato crop yield was 3.1 times higher than P treatment.

  compared with P treatment

Impact of nitrogen and zinc on quality, yield and economics of potato (Solanum tuberosum L.) cultivar Kufri Himsona · 2017

• positive
  The 200 kg N and 15 kg Zn treatment gave the highest tuber yield.

  compared with 150 and 250 kg nitrogen and 5, 10 kg Zinc

Yield and nutrient gap analysis for potato in northwest China · 2018

• positive
  Nitrogen fertilization increased potato yield by 1169–7625 kg/ha.

Nitrogen Fertility and Cultivar Effects on Potato Agronomic Properties and Acrylamide‐forming Potential · 2018

• positive
  Tuber yield increased quadratically with nitrogen rate.

cites 2 papers here

Regulation effects of water and nitrogen on potato dry matter and nitrogen accumulation and partitioning · 2018

• positive
  Potato tuber yield was highest with 90% field capacity and 85.5 kg N ha -1.

EFFECTIVENESS OF UREA WITH UREASE INHIBITOR – UTEC TO THE POTATO · 2019

• positive
  UTEC urea increased potato yield relative to control by 35.6%.

  compared with control

Irrigation and Nitrogen Fertilizer Rate Impacts on Soil Nitrate in Potato Production · 2019

• positive
  Plant dry matter and tuber yield of potato increased with each increase in N rate.

cites 1 paper here

Stabilising Urea Amine Nitrogen Increases Potato Tuber Yield by Increasing Chlorophyll Content, Reducing Shoot Growth Rate and Increasing Biomass Partitioning to Roots and Tubers · 2019

• positive
  SAN increased high-grade Casablanca tuber yield at mid-bulking.
• positive
  SAN increased initiation-stage tuber weight to shoot length ratio.

cited by 1 paper here

Effect of Fertilizer Sources on Potato Yield and Yield Components under Acidic Soil Condition in Central High Lands of Ethiopia · 2019

• positive
  Urea and DAP maximized Wenchi yield at 25.66 t/ha in unlimed soil.
• positive
  Urea and DAP produced maximum total tuber yield of 31.38t/ha in limed Welmera.
• positive
  Urea and DAP produced maximum total tuber yield of 24.06t/ha in limed Gumer.
• positive
  Urea and DAP maximized Wenchi yield at 30.99 t/ha in limed soil.
• positive
  Urea, DAP and KCl maximized Jeldu yield at 23.9 t/ha in limed soil.
• positive
  Urea, DAP and KCl maximized Jeldu yield at 19.13 t/ha in unlimed soil.

cites 2 papers here

Precision phenotyping of contrasting potato (Solanum tuberosum L.) varieties in a novel aeroponics system for improving nitrogen use efficiency: In search of key traits and genes · 2020

• positive
  Low N produced higher harvest index and N harvest index.

Response of nitrogen levels on yield and growth attributes of potato (Solanum tuberosum L.) · 2020

• positive
  Nitrogen level increases significantly raised yield attributes.
• positive
  At 200 kg N/ha, number and weight of graded tubers and total tuber number and yield reached maxima in both years.

Response of potato to nitrogen and phosphorus fertilizers at Assosa, western Ethiopia · 2020

• positive
  The 150 kg N ha −1 rate gave a 79.4% gross profit margin.
• positive
  The 150 kg N ha −1 rate gave the highest benefit cost ratio, 4.86.
• positive
  The 150 kg N ha −1 rate gave the maximum gross margin of $5138.68 or 141,773.55 ETB ha −1.

Optimizing Nitrogen Fertilization to Improve Qualitative Performances and Physiological and Yield Responses of Potato (Solanum tuberosum L.) · 2020

• positive
  The 140 kg N ha-1 supply gave the highest potato yield, compared with N0 and N280.

  compared with N0 and N280

In‐season potato yield prediction with active optical sensors · 2020

• positive
  168 kg N ha −1 produced the maximum potato yield.

Fenoxaprop combined with urea improves photosynthesis, weed control, and yield of potato · 2020

• positive
  Compared with fenoxaprop alone, 4 g L-1 urea with 1.33 ml L-1 fenoxaprop significantly increased potato tuber yield by 11%.

  compared with fenoxaprop treatment alone

EFFECT OF ADDITION OF VERMICOMPOST, BIO AND MINERAL FERTILIZER ON THE AVAILABILITY OF SOME NUTRIENTS IN SOIL AND POTATO YIELD · 2020

• positive
  Combined nitrogen and phosphate biofertilizer gave superior soil available nitrogen after harvest.
• positive
  Combined biofertilizer gave superior yield per plant.
• positive
  Combined biofertilizer gave superior tuber number.
• positive
  Combined biofertilizer gave superior total yield.

Yield and quality of three potato cultivars under series of nitrogen rates · 2020

• positive
  Total tuber yield for all three cultivars peaked at 168 kg N ha −1.

cites 1 paper here

Mexican Sunflower (Tithonia diversifolia) as a Source of Organic Matter in Potato Cultivation · 2020

• positive
  The highest potato yield occurred with 11,273 ton/ha Mexican sunflower fertilizer.

Standardization of agro-techniques for aeroponic potato (Solanum tuberosum) minitubers under generation-0 · 2020

• positive
  The 45 cm ×10 cm density with 150 kg N/ha gave the highest tuber weight, 27.62 t/ha.
• positive
  Nitrogen at 120 kg N produced significantly more tubers than 150 kg N/ha, at 1560 thousand/ha.

  compared with 150 kg N/ha

• positive
  Nitrogen at 180 kg N/ha produced significantly more tubers than 150 kg N/ha, at 1506 thousand/ha.

  compared with 150 kg N/ha

• positive
  The 45 cm × 10 cm geometry with 120 kg N/ha produced the highest total tuber number, 1823 thousand/ha.

  compared with other combinations

Chlorophyll meter‐based leaf nitrogen status to manage nitrogen in tropical potato production · 2021

• positive
  At the 90% NSI threshold, SPAD management improved tuber yield per unit nitrogen.

cites 1 paper herecited by 1 paper here

Effect of the diverse combinations of useful microbes and chemical fertilizers on important traits of potato · 2021

• positive
  AMF + PSB + NN with 75% urea and superphosphate gave the best tuber number and weight.

Enhancing the qualitative and quantitative traits of potato by biological, organic, and chemical fertilizers · 2021

• positive
  Pseudomonas with 100% urea gave the highest second-year biological yield of 108.65 t/ha.

cites 3 papers here

Using DNDC and WHCNS_Veg to Optimize Management Strategies for Improving Potato Yield and Nitrogen Use Efficiency in Northwest China · 2021

• positive
  Model sensitivity analysis found greatest tuber yield with the specified N rate, split, depth and planting date.

cites 1 paper here

Production of G0 ‘Median' Potato Seeds by Stolons Induction Through Pruning, Nitrogen and Cytokinin Application · 2022

• positive
  Pruning at 30 DAP combined with cytokinin and nitrogen application gave the best tuber yield, about 9.33 tubers per plant.

Growth and yield responses of potato (Solanum tuberosum L.) varieties to NPS blended fertilizer at Nedjo, Western Ethiopia · 2022

• positive
  Yield components increased significantly with NPS rate up to 150kg NPS/ha.

Different sources of nitrogen in potato cultivation and the management of common scab · 2023

• positive
  Urea increased tuber production.

Effect of N Fertilizer Dosage and Base/Topdressing Ratio on Potato Growth Characteristics and Yield · 2023

• positive
  Potato yield was higher with 120–180 kg ha−1 N and an 8:2 base/topdressing ratio in silt loam.

cites 2 papers here

Effect of Nitrogen Application and Fertigation Scheduling On Potato Yield Performance Under Drip Irrigation System · 2023

• positive
  Higher nitrogen rate with stage-wise scheduling produced higher tuber yield than equal schedules.

  compared with equal scheduling at any time intervals

Potato growth, yield and quality affected by calcium and nitrogen (CaN) compound fertilizers on andisol soil type in Lembang · 2023

• positive
  CaN compound fertilizer at 300 kg/ha increased potato yields.

Impact of Standardizing Macro-Nutrient (Nitrogen) Requirement in Newly Released Potato (Solanum tuberosum L.) var. Kufri Neelkanth · 2024

• positive
  Nitrogen at 200 kg/ha significantly increased the number of 0-25 g tubers to 320.
• positive
  Nitrogen at 300 kg/ha significantly increased fresh haulm yield to 34.46 kg/plot.
• positive
  Nitrogen at 300 kg/ha significantly increased dry haulm yield to 4.89 kg/plot.
• positive
  Nitrogen at 200 kg/ha significantly increased total tuber yield to 71.49 kg/plot and 372.34 q/ha.
• positive
  Nitrogen at 200 kg/ha significantly increased the number of tubers above 75 g to 297.
• positive
  Nitrogen at 200 kg/ha significantly increased the number of 25-75 g tubers to 402.

Effects of dry bio-slurry and nitrogen fertilizer on potato and wheat yields under rotation cropping system · 2024

• positive
  A 25% dry bio-slurry and 75% recommended nitrogen combination produced the highest potato tuber yield, 27.6 tha-1, versus control.

  compared with control

Meeting the Demand for Different Nitrogen Forms in Potato Plants Without the Use of Nitrification Inhibitors · 2024

• positive
  The Opt treatment increased potato tuber yield by 12-20% compared with the F treatment.

  compared with the F

Effects of nitrogen application on potato (Solanum tuberosum L.) yield and soil nitrate dynamics in a sandy loam soil · 2025

• positive
  Tuber yield was highest (20.8 t/ha) at 150 kg N/ha.
• no effect
  Nitrogen application above 150 kg N/ha did not give significant tuber yield improvements.

  compared with 150 kg N/haNo difference from an alternative treatment

cites 2 papers here

On-Farm variable rate nitrogen management in irrigated potato · 2025

• positive
  Six fields had significantly larger US No. 1 tuber size under variable rate nitrogen in high yield potential zones (+11 g tuber-1).

  compared with uniform N management

• positive
  Variable rate nitrogen in high yield potential zones increased US No. 1 potato yield by 4.8 Mg ha-1.

  compared with uniform N management

• positive
  Six fields had significantly larger marketable tuber size under variable rate nitrogen in high yield potential zones (+8 g tuber-1).

  compared with uniform N management

• positive
  Variable rate nitrogen in high yield potential zones increased marketable potato yield by 4.6 Mg ha-1.

  compared with uniform N management

• positive
  Higher N rates increased potato productivity in high yield potential areas.
• positive
  Variable rate nitrogen in high yield potential zones increased total potato yield by 4.6 Mg ha-1.

  compared with uniform N management

• positive
  Six fields had significantly larger total tuber size under variable rate nitrogen in high yield potential zones (+10 g tuber-1).

  compared with uniform N management

• no effect
  Lower nitrogen rates in low yield potential zones caused no yield decrease.
• no effect
  Lower N rates maintained similar potato productivity with less N in low yield potential areas.

cites 2 papers here

Controlled-release nanofertilizer using chitosan nanoparticles loaded with NPK: Development and impact on the yield and nutritional quality of Solanum tuberosum · 2025

• positive
  The 1% formulation increased potato mass yield 37% compared with control.

  compared with the control

Response of potato tuber yield to NPK fertiliser in China: a meta-analysis · 2025

• positive
  N fertilizer increased potato yield by 33.64.

Yield Characteristics and Nutrient Use Efficiency of Potato ( Solanum tuberosum L.) Varieties Under Various NPS Fertilizer Rates in Mirab Azernet District in Central Ethiopia · 2026

• positive
  Belete at 200 NPS kg ha −1 produced the highest marginal yield, 79.1%.
• positive
  Belete at 200 NPS kg ha −1 gave a net benefit of 693,740 ETB ha −1.

Elucidation of Response Mechanism of Potato to Nitrogen Stress by Physiological and Transcriptional Analyses · 2026

• positive
  Nitrogen deficiency significantly reduced tuber number, tuber weight and commodity rate.

  About lacking this nutrient, so it counts the other way round

Growth, productivity and profitability of potato (Solanum tuberosum L.) as influenced by nitrogen fertilizer and intra-row spacing in Ethiopia highlands · 2026

• positive
  The 110 kg N ha⁻¹ and 30 cm spacing combination gave the highest net benefit of 236,614 ETB ha⁻¹.

cites 1 paper here

Quantifying the response of goldrush potato to nitrogen on sandy soil · 2026

• positive
  Yield gains were most consistent between 277 and 295 kg N ha − 1.

cites 4 papers here

Accumulation and yield formation in potato across controlled and field experiments: implications for nitrogen use efficiency research · 2026

• positive
  The highest potato yield in pot experiments was obtained at 120 kg N ha⁻¹, particularly for Jogla.