Potassium spray improved grain Fe, Cu, Zn and Mn content relative to control in both conditions.

potassium · nutrient: content · Triticum aestivum (wheat)Positive and negative results

70 papers in the same direction as this claim · 10 in the opposite direction · 1 reporting no difference from an alternative

1. negative
   Increasing K from 400 to 800 μ M decreased shoot Mg concentration of wheat by 13%.

   Phosphorus and Temperature Effects on Magnesium, Calcium, and Potassium in Wheat and Tall Fescue Leaves · 1994

   Opposite direction

2. no effect
   Sucrose uptake and efflux were insensitive to metabolic inhibitors, pH, and potassium concentration.

   Sucrose Release into the Endosperm Cavity of Wheat Grains Apparently Occurs by Facilitated Diffusion across the Nucellar Cell Membranes · 1995

   Opposite direction

3. no effect
   Potassium and phosphorus by potassium interactions had no significant effect on Mn uptake.

   The relationship between phosphorus and copper concentrations in wheat · 1980

   Opposite direction

4. no effect
   Differentiated P and K rates had no significant effect on nitrogen accumulation at full ripening.

   Effects of different phosphorus and potassium fertilization on contents and uptake of macronutrients (N, P, K, Ca, Mg) in winter wheat I. Content of macronutrients · 2014

   Opposite direction

5. no effect
   Long-term fertilization had no detectable residual effect on grain K.

   Studying the Direct and Residual Effect of Long‐Term Fertilization Using Ammonium Lactate and Hot Water Extraction Methods · 2005

   Opposite direction

6. negative
   Limiting potassium decreased nitrogen content of wheat dry matter.

   THE EFFECT OF POTASSIUM SUPPLY ON THE COMPOSITION AND QUALITY OF WHEAT. II · 1935

   Opposite direction

7. negative
   Low-K stress strongly induced the wheat calcium signaling components CBLs and CIPKs.

   Wheat roots adapt to potassium deficiency through coordinated antioxidant, hormonal, and metabolic reprogramming: Insight from morpho-physiological, biochemical, and transcriptomic analysis · 2025 · compared with sufficient-K control

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

8. negative
   Potassium gave a negative response in black soil.

   Influence of Cationic Environment on Crop Response to Fertilizers · 1985

   Opposite direction

73 papers more in this group