acid-lime
Answered from our own 538-crop reference and 24,425 guides. No figure is invented — every number traces to that reference, and every passage below is quoted from a guide published here.
6 sentences from our guides, quoted exactly
Spinach contains the highest oxalic acid content, at 0.75% (750 mg per 100 g serving).
Annual battery replacement (lead-acid) or 10+ year lithium life.
Root Respiration: Roots release CO₂ into solution CO₂ + H₂O → H₂CO₃ (carbonic acid) → Lowers pH Effect: 0.1-0.3 pH decrease in poorly aerated systems 4.
Root Respiration (CO₂ Production) Plant roots respire continuously: C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + Energy CO₂ dissolves in water: CO₂ + H₂O → H₂CO₃ (carbonic acid) Effect: Mild acidification (0.1-0.2 pH drop) Worse in poorly aerated systems (accumulated CO₂) 4.
Look for: Red sandy loams Gravelly soils Shallow, skeletal soils on hill slopes Calcareous (lime-rich) soils Soil pH: It is adaptable to a pH range of 6.0 to 8.5, making it suitable for many of the slightly alkaline soils found in dry regions.
If you can, use slightly acidic irrigation water—lime in irrigation will raise pH over time.
Found by keyword match. Nothing above was generated — every sentence is quoted from a published guide, and every figure comes from the 538-crop reference.