T2 produced maximum sweet orange plant height of 83.57 cm.

phosphorus · growth · Citrus sinensis (sweet orange)Positive and negative results

5 papers in the same direction as this claim · 2 in the opposite direction

1. negative
   Phosphorus shortage delayed orange plant development.

   The development of cuttings of the Washington navel orange to the stage of fruit set. I. The development of the rooted cutting · 1961

   Opposite direction

2. negative
   Low phosphorus delayed development without greatly changing its pattern.

   The development of cuttings of the Washington navel orange to the stage of fruit set. II. Drifts in nutrient composition · 1961

   Opposite direction

3. positive
   AS+DMPP increased orange tree biomass.

   Use of Nitrification Inhibitor DMPP to Improve Nitrogen Uptake Efficiency in Citrus Trees · 2013 · compared with ammonium sulphate (AS) and calcium-potassium nitrate (CPN)

   Same direction

4. positive
   Treatment T12 (8 kg farm yard manure plus 120 g N, 45 g P and 30 g K per plant) gave the maximum plant height of 62.55 cm in grafted sweet orange.

   Roll of Organic Manures and Different Doses of N, P, K on Growth, Establishment and Percentage of Survival of Sweet Orange (Citrus sinensis Osbeck) Grafted Plants · 2020

   Same direction

5. positive
   At 25 mg·L-1 P, root development was best.

   Effect of Different Phosphorus Levels on Growth and Leaf Element Contents of Young Newhall Navel Orange Trees · 2012

   Same direction

6. positive
   Under magnesium deficiency, high phosphorus promoted new shoot growth.

   Phosphorus (P)-magnesium (Mg) interaction in citrus growth: High P promotes new shoot growth while accelerating old leaf symptoms in young navel orange plants under Mg deficiency · 2025

   Same direction

7. positive
   Nitrogen, phosphorus and potassium application improved plant height and canopy volume of sweet orange.

   Effect of nutrients level on growth of sweet orange under Western Maharashtra conditions · 2024

   Same direction

nitrogen · growth · Citrus sinensis (sweet orange)Positive and negative results

14 papers in the same direction as this claim · 5 in the opposite direction · 1 reporting no difference from an alternative

1. negative
   N deficiency enhancing root dry weight/shoot dry weight ratio.

   Adaptive responses of carbon and nitrogen metabolisms to nitrogen-deficiency in Citrus sinensis seedlings · 2022

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

2. no effect
   Regeneration capacity did not differ between cryopreserved and non-cryopreserved sweet-orange callus.

   Cryopreserved callus, a source of protoplasts for citrus improvement · 2000 · compared with non-cryopreserved callus

   Opposite direction

3. negative
   Nitrogen deficiency increased root/shoot dry weight ratio.

   Adaptive Responses of Hormones to Nitrogen Deficiency in Citrus sinensis Leaves and Roots · 2024

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

4. no effect
   Nitrogen rate did not affect growth in the first two field years.

   Nitrogen, Rootstocks, and Growth of Young 'Rhode Red' Valencia Orange Trees · 2001

   Opposite direction

5. no effect
   In 1997, N rate and fertigation frequency did not affect trunk diameter.

   366 Nitrogen Fertigation of Young Navel Orange Trees · 2000

   Opposite direction

6. no effect
   Growth did not differ detectably between nitrate and ammonium nitrogen sources.

   The development of cuttings of the Washington navel orange to the stage of fruit set. I. The development of the rooted cutting · 1961 · compared with ammonium

   No difference from an alternative

7. positive
   A nitrogen level of 224 kg N ha−1 improved canopy volume compared with other N levels.

   Comparative Response of Huanglongbing-Affected Sweet Orange Trees to Nitrogen and Zinc Fertilization under Microsprinkler Irrigation · 2020 · compared with other N levels

   Same direction

8. positive
   Urea sprays at pea or marble stage significantly increased vegetative growth.

   Enhancing cropping of Navel orange by different agrochemicals foliar sprays · 2011

   Same direction

12 papers more in this group

potassium · growth · Citrus sinensis (sweet orange)Results agree

10 papers in the same direction as this claim

1. positive
   Potassium application increased fruit growth rate.

   Potassium stimulates fruit sugar accumulation by increasing carbon flow in Citrus sinensis · 2024

   Same direction

2. positive
   Potassium silicate sprays promoted vegetative growth of Navel orange trees relative to the check treatment.

   Response of Navel Orange Trees to Potassium Silicate Application · 2016 · compared with check treatment

   Same direction

3. positive
   Treatment T12 (8 kg farm yard manure plus 120 g N, 45 g P and 30 g K per plant) gave the maximum plant height of 62.55 cm in grafted sweet orange.

   Roll of Organic Manures and Different Doses of N, P, K on Growth, Establishment and Percentage of Survival of Sweet Orange (Citrus sinensis Osbeck) Grafted Plants · 2020

   Same direction

4. positive
   T7 shading plus silicate also gave the greatest significant shoot length increase.

   Vegetative Growth and Quality of Washington Navel Orange as Affected by Shading Nets and Potassium Silicate Spraying · 2020

   Same direction

5. positive
   Potassium silicate at 0.2% improved shoot length, thickness and leaf area.

   Improving Vegetative Growth and Productivity of Navel Orange (Citrus sinensis L.) Trees under Salt Affected Soil Using Glycinebetaine and Potassium Silicate · 2021 · compared with control treatment (untreated trees)

   Same direction

6. positive
   Natural raw material mixture and feldspar applications significantly increased growth of orange trees compared with regular mineral fertilizers.

   Use of Natural Raw Material Mixture and Natural Raw Potassium as Substitute for Chemical Fertilizers in Feeding Washington Navel Orange Trees under Kafr El Sheikh Conditions. · 2017 · compared with regular mineral fertilizers

   Same direction

7. positive
   T12 gave maximum leaf area in sweet orange relative to control.

   Effect of potassium and zinc on growth, physiological and yield attributes in sweet orange (Citrus sinensis Osbeck) cv. “mosambi” under high density planting · 2020 · compared with T1(control)

   Same direction

8. positive
   foliar application of T4 - potassium silicate 4ml/L increased diameter of the fruit to 6.95 cm

   Studies on the effect of foliar application of calcium, potassium and silicon on yield of sweet orange (Citrus sinensis L.) cv. Sathgudi · 2021

   Same direction

2 papers more in this group