What key factor can inhibit a tree's response to fertilizers?

Soil moisture levels play a critical role in a tree's ability to respond to fertilizers. When soil moisture is insufficient, it can limit the tree's root's capacity to absorb nutrients, including those provided by fertilizers. Adequate moisture is necessary for the biochemical processes that facilitate nutrient uptake and transport within the tree. If the soil is too dry, the roots may become stressed, and even if fertilizers are present, the tree may struggle to utilize them effectively. Additionally, various nutrients require specific moisture levels for optimal availability and absorption, so maintaining appropriate soil moisture is essential for a tree’s health and growth when applying fertilizers.