The Effects of Application of Nitrogen Potassium and Calcium on the Growth of Romaine Lettuce

calcium atom · quality: phytochemicals · Lactuca sativa (garden lettuce)Positive and negative results

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

1. no effect
   Stem diameter, total leaf number, plant pH and vitamin C content were exceptions to the reported effects of extra calcium nitrate.

   Semi-hydroponic cultivation of fertigated curly lettuce with calcium nitrate-enriched saline solutions · 2023

   Opposite direction

2. positive
   Total phenolics increased by 63.6 and 65.7%.

   Improving the Productivity and Physiological Characteristics of Lettuce Plants Using Spraying Calcium as a Nanofertilizer · 2024

   Same direction

3. positive
   Calcium lactate followed by ozonated water gave the minimum volatile headspace concentration in lettuce packages.

   Changes in Headspace Gas Concentration Including Volatiles as Affected by Post-Harvest Treatments in Packaged Fresh-Cut Lettuce · 2017

   Same direction

1 paper more in this group

calcium atom · growth · Lactuca sativa (garden lettuce)Positive and negative results

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

1. no effect
   Calcium did not affect mycorrhizal plant growth.

   Effect of calcium application on the tolerance of mycorrhizal lettuce plants to polyethylene glycol-induced water stress · 1997

   Opposite direction

2. no effect
   TCP with extra 5 mM Ca gave similar shoot and root weight to the other P source, without low-P stress.

   Identifying Lettuce Accessions for Efficient Use of Phosphorus in Hydroponics · 2023

   Opposite direction

3. negative
   Increasing calcium from 150 to 350mg/L slowed lettuce growth.

   Influence of calcium macronutrient on tip burn occurrence in hydroponically cultivated lettuces · 2022 · compared with 150mg/L

   Opposite direction

5 papers more in this group

calcium atom · physiology: pigments · Lactuca sativa (garden lettuce)Results agree

3 papers in the same direction as this paper

1. positive
   A high calcium proportion increased leaf calcium and chlorophyll concentrations.

   Yield and quality of leafy lettuce in response to nutrient solution composition and growing season · 2009

   Same direction

2. positive
   Carotenoids increased by 48.4 and 56.5%.

   Improving the Productivity and Physiological Characteristics of Lettuce Plants Using Spraying Calcium as a Nanofertilizer · 2024

   Same direction

3. positive
   Plus Ca under low light produced the highest chlorophyll concentration.

   Interaction Between Calcium Concentration and Growth Irradiance on Photosynthesis and Growth of Temperate Lettuce in the Tropics · 2009

   Same direction

calcium atom · yield · Lactuca sativa (garden lettuce)Results agree

5 papers in the same direction as this paper

1. positive
   Higher calcium increased cabbage and lettuce root yield.

   Effect of aluminium on growth and nutrient uptake of cabbage, lettuce and kikuyu grass in nutrient solution · 1980 · compared with control

   Same direction

2. positive
   Increasing calcium to 257 meq L−1 reversed most nickel growth suppression and restored yield above 90% of control.

   ALLEVIATION OF NICKEL TOXICITY BY CALCIUM SALINITY · 1989 · compared with control 1/10 strength Hoagland solution

   Same direction

3. positive
   Ca-NPs increased production per hectare by 54.7 and 52.8%.

   Improving the Productivity and Physiological Characteristics of Lettuce Plants Using Spraying Calcium as a Nanofertilizer · 2024

   Same direction

2 papers more in this group

nitrogen · growth · Lactuca sativa (garden lettuce)Results differ

59 papers in the same direction as this paper · 22 in the opposite direction · 3 reporting no difference from an alternative

1. no effect
   Nitrogen had no effect on radiation use efficiency except at the lowest treatment under high irradiance.

   Regulation of Growth at Steady-state Nitrogen Nutrition in Lettuce (Lactuca sativa L.): Interactive Effects of Nitrogen and Irradiance · 2000

   Opposite direction

2. negative
   Replacing nitrate with chloride reduced lettuce growth after approximately five days.

   The effect of chloride and sulphate salts on the nitrate content in lettuce plants (Lactuca sativa L.) · 1983

   Opposite direction

3. no effect
   Nitrogen addition did not affect germination index.

   Use of a germination bioassay to test compost maturity of willow ( Salix sp.) sawdust · 2002

   Opposite direction

81 papers more in this group

nitrogen · physiology: pigments · Lactuca sativa (garden lettuce)Positive and negative results

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

1. negative
   Reduced nitrogen promoted anthocyan pigment development in lettuce.

   Studies in the Nutrition of Vegetables · 1939

   Opposite direction

2. negative
   High nitrogen decreased leaf chlorophyll content at the first and third sowings.

   Effect of GA3 and nitrogen on yield and marketability of lettuce (Lactuca sativa L.). · 2014

   Opposite direction

3. no effect
   Total chlorophyll and chlorophyll a/b ratio did not differ across nitrate treatments within either line.

   Effects of NO3 – Availability on Total Productivity, Root Morphology, Photosynthesis and Nitrogen Metabolism of Lettuce (Lactuca sativa L.) Recombinant Inbred Lines · 2014

   Opposite direction

9 papers more in this group

nitrogen · quality: phytochemicals · Lactuca sativa (garden lettuce)Positive and negative results

9 papers in the same direction as this paper · 6 in the opposite direction

1. negative
   High N fertilizer application (20 and 30 kg N·ha−1) decreased antioxidant activities and total ascorbic acid (TAA) of baby lettuce.

   Effect of Vegetal- and Seaweed Extract-Based Biostimulants on Agronomical and Leaf Quality Traits of Plastic Tunnel-Grown Baby Lettuce under Four Regimes of Nitrogen Fertilization · 2019

   Opposite direction

2. negative
   Three-day nitrogen limitation with continuous lighting improved lettuce anthocyanins.

   Pre-harvest Nitrogen Limitation and Continuous Lighting Improve the Quality and Flavor of Lettuce (Lactuca sativa L.) under Hydroponic Conditions in Greenhouse · 2022

   Opposite directionAbout lacking this nutrient, so it counts the other way round

3. negative
   Reduced nitrogen significantly increased phenolic accumulation in lettuce.

   Reduced nitrogen supply enhances the cellular antioxidant potential of phenolic extracts through alteration of the phenolic composition in lettuce (Lactuca sativa L.) · 2019

   Opposite directionAbout lacking this nutrient, so it counts the other way round

12 papers more in this group

nitrogen · yield · Lactuca sativa (garden lettuce)Positive and negative results

60 papers in the same direction as this paper · 17 in the opposite direction · 1 reporting no difference from an alternative

1. no effect
   Light-dependent nitrate deprivation generally did not reduce lettuce yield, except under strong nitrate reduction.

   The Effect of Light-dependent Application of Nitrate on the Growth of Aeroponically Grown Lettuce (Lactuca sativa L.) · 2004

   Opposite direction

2. negative
   The lower nutrient nitrate level reduced lettuce dry mass yield.

   Nitrate concentration in lettuce leaves depending on photosynthetic photon flux and nitrate concentration in the nutrient solution · 2011

   Opposite direction

3. no effect
   Nitrogen reduction did not affect green or red lettuce yield.

   Effect of Reduced Nitrogen and Supplemented Amino Acids Nutrient Solution on the Nutritional Quality of Baby Green and Red Lettuce Grown in a Floating System · 2020

   Opposite direction

75 papers more in this group