nutrient-management
Nutrient management is the science of optimizing crop nutrition by integrating soil properties, climate conditions, and cultivation practices to enhance nutrient use efficiency. This approach is critical for maximizing crop productivity and quality while minimizing environmental harm from excess nutrient runoff, making it fundamental to sustainable agricultural systems.
open_in_new WikipediaPubMed · 2026-03-24
In hydroponic lettuce farming, plants grown with lower salt levels and brighter lighting produce significantly more biomass and higher yields compared to high-salt, low-light conditions. Optimal results were achieved with salt levels of 1.5-2.0 dS m-1 and bright lights at 240 µmol m-2 s-1, providing practical guidance for indoor farming systems.
Optimal treatment (EC 1.5-2.0 dS m-1, 240 µmol m-2 s-1 light) produced 57.97 g/plant yield and 1338.31 cm² leaf area, 75% higher than high-salt conditions
Within low-salt conditions, increasing light intensity from 145 to 240 µmol m-2 s-1 increased yield by 47%
High electrical conductivity (4.5-6.0 dS m-1) severely reduced uptake of essential macronutrients (N, P, K, Ca, Mg, S) and micronutrients (B, Zn, Mn, Fe, Cu)
