There is a commonly held belief that high nitrate ratios produce smaller plants and high ammonium ratios produce larger plants. Research into the effect of nutrient ratios on plant height has shown this is not the case. Results of this research have provided recommendations on the practicality of plant nutrient management in limiting bedding plant height.
Links: https://a.ca/plant-height-control-through-nutrition-management-practices/Keywords: nutrient ratios, nitrate ratios, aluminium ratios,