Infiltration is the entry of water through the soil surface. It differs from drainage, which includes movement through and out of the root zone after water enters. For a mango, slow infiltration can cause runoff while fast infiltration may still lead to saturation above an underground barrier. Check both surface behavior and moisture at root depth when planning irrigation. A puddle's disappearance alone does not prove that the whole planting site is adequately drained.
Interveinal chlorosis is yellowing between leaf veins while the veins remain greener. In mangoes it can suggest particular nutrient-availability problems, but leaf age, root health, and soil conditions determine how the pattern should be interpreted. Iron-related symptoms commonly appear on younger growth, while other deficiencies can affect older leaves. Use the pattern to guide investigation rather than treating it as proof from a photograph alone. A soil or leaf analysis can be more useful than repeated untargeted applications.