Effect of Water Hyacinth Compost and Nitrogen, Phosphorus, Potassium, Sulfur Fertilizers on S-Availability, S-Uptake, and Quality and Yield of Onion (Allium ascalonicum L.) on Inceptisols of Jatinangor

nitrogen · growth · Allium cepa (onion)Results differ

70 papers in the same direction as this paper · 9 in the opposite direction · 1 reporting no difference from an alternative

1. no effect
   Nitrogen source and rate had only minor effects on leaf area and storage potential.

   Nitrogen Use Efficiency and Onion Yield Increased with a Polymer-coated Nitrogen Source · 2002

   Opposite direction

2. negative
   Increased nitrogen slightly delayed bulb development.

   The phenology of onion bulb development at different sites and its relevance to incomplete bulbing (‘thick-necking’) · 1987

   Opposite direction

3. no effect
   The nitrogen by spacing interaction did not significantly affect stem diameter.

   Effect of Spacing and Nitrogen Fertilizer on the Yield and Yield Component of Shallot (Allium ascalonium L.) · 2015

   Opposite direction

77 papers more in this group

phosphorus · nutrient: content · Allium cepa (onion)Positive and negative results

9 papers in the same direction as this paper · 3 in the opposite direction

1. no effect
   Phosphorus rate had no clear effect on phosphorus concentration in onion bulbs.

   Reduced Nitrogen, Phosphorus, and Potassium Rates for Intermediate-day Onion in Paddy Soil with Incorporated Rice Straw plus Manure · 2011

   Opposite direction

2. negative
   High phosphorus decreased onion zinc concentration.

   Zinc nutrition of onions as influenced by phosphorus · 1976

   Opposite direction

3. negative
   Excess phosphorus suppresses iron, potassium and zinc uptake and affects plant growth.

   Effect of nitrogen and phosphorous application on seed yield and nutrient uptake of onion (Allium cepa L.) · 2018

   Opposite direction

9 papers more in this group

potassium · growth · Allium cepa (onion)Positive and negative results

24 papers in the same direction as this paper · 1 in the opposite direction

1. no effect
   Potassium had no significant impact on shallot height at 2, 3, and 4 MST.

   The Effect of Potassium Fertilizer and Eco-Enzyme on the Growth and Production of Shallots (Allium ascalonicum L.) · 2025

   Opposite direction

2. positive
   Raising potassium sulphate up to 150 kg/fed significantly affected onion growth characters.

   RESPONSE OF GROWTH AND YIELD OF ONION PLANTS TO POTASSIUM FERTILIZER AND HUMIC ACID. · 2005

   Same direction

3. positive
   Higher potassium produced more vigorous onion growth in length, leaf number and fresh and dry weight.

   Vegetative Growth and Chemical Parameters of Onion as Influenced by Potassium as Major and Stimufol as Minor Fertilizers · 2011

   Same direction

22 papers more in this group

fertilization · quality: phytochemicals · Allium cepa (onion)Positive and negative results

26 papers in the same direction as this paper · 1 in the opposite direction

1. negative
   Silicon fertilization decreased onion bulb ascorbic acid and pyruvic acid relative to the control.

   Impact of silicon fertilization on onion production and quality in the Brazilian semi-arid region · 2025 · compared with the control

   Opposite direction

2. positive
   Onion bulbs from plants receiving FYM, PM or VC had higher total phenol, total flavonoid and ascorbic acid than control plants.

   Comparison of organic and conventional farming for onion yield, biochemical quality, soil organic carbon, and microbial population · 2017 · compared with control plants

   Same direction

3. positive
   Integrated fertilizers increased onion total phenols content versus inorganic fertilizer alone.

   Integrated nutrient management for sustainable onion production · 2015 · compared with inorganic fertilizer application alone

   Same direction

24 papers more in this group

nitrogen · nutrient: content · Allium cepa (onion)Positive and negative results

26 papers in the same direction as this paper · 3 in the opposite direction

1. no effect
   Nitrate did not affect NR subcellular localization.

   Nitrate Reductases Are Relocalized to the Nucleus by AtSIZ1 and Their Levels Are Negatively Regulated by COP1 and Ammonium · 2018

   Opposite direction

2. no effect
   Different levels of nitrogen and vermicompost had no significant effect on total P and K contents in soil.

   Integrated effect of vermicompost and nitrogen fertilizers on soil nutrient status and yield of onion-radish cropping system · 2011

   Opposite direction

3. negative
   Excessive nitrogen and sulfur increased nitrate accumulation in onion.

   Effect of Nitrogen and Sulfur Fertilizer on Yield and Quality in Onion · 2008

   Opposite direction

26 papers more in this group

fertilization · nutrient: content · Allium cepa (onion)Positive and negative results

80 papers in the same direction as this paper · 9 in the opposite direction

1. no effect
   Compost application showed no significant change in soil Pb, Cr and Mn.

   Effect of agro industrial wastes compost on soil health and onion yields improvements: study at field condition · 2019

   Opposite direction

2. no effect
   Irrigation and fertilization had little effect on plant total N concentration.

   Effect of Drip Irrigation and Fertilization Timing and Rate on Yield of Onion · 2003

   Opposite direction

3. negative
   Lettuce, onion and carrot seedlings in compost had lower potassium percentage than in sand.

   Growth and Mineral Composition of Vegetable Seedlings · 1964 · compared with sand culture

   Opposite direction

86 papers more in this group

fertilization · growth · Allium cepa (onion)Positive and negative results

250 papers in the same direction as this paper · 40 in the opposite direction · 3 reporting no difference from an alternative

1. no effect
   The combination of CRI fertilizer and AM inoculation did not increase onion root growth.

   Evaluation of commercial inorganic and organic fertilizer effects on arbuscular mycorrhizae formed by Glomus intraradices · 2004

   Opposite direction

2. no effect
   Onion height and weight were similar under Peters and Sea Tea.

   Organic Vegetable Transplant Production · 2005

   Opposite direction

3. no effect
   CMC rates did not affect bulb dry weight or bulb and leaf N and P concentrations.

   Evaluation of Composted Cattle Manure Rate on Bulb Onion Grown with Reduced Rates of Chemical Fertilizer · 2012

   Opposite direction

290 papers more in this group

potassium · quality: phytochemicals · Allium cepa (onion)Results agree

3 papers in the same direction as this paper

1. positive
   Onion treated with 0.6% potassium metabisulphite and dried at 70 degrees C had better colour, aroma, and acceptability.

   Tray Drying Characteristics of Onion Slices and Physicochemical Analysis of Dried Onion Powder · 2019

   Same direction

2. positive
   Combined AMF and potassium silicate treatment produced the maximum increment in onion antioxidant activity.

   Effects of Funneliformis mosseae and Potassium Silicate on Morphological and Biochemical Traits of Onion Cultivated under Water Stress · 2022

   Same direction

3. positive
   Ascorbic acid reached 4.69 mg g-1 at 60 kg S ha-1 through potassium schoenite.

   Response of Different Sources and Levels of Sulphur on Quality and Grading of Onion (Allium cepa L.) · 2019

   Same direction