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Special Report: Darwin 5000

Calcium supplement for many kinds of crops Recommended for alkaline soil Darwin 5000

Special fertilizer (gypsum)

Shape: Particle with particle size of 5 mm or less
Packaging: Plastic bag 20 kg / bag or flexible container 500 kg / container



  • Weakly acidic calcium fertilizer with product ph of 4 to 5.
  • Ideal for calcium supplementation in alkaline soil.
  • Calcium sulfate, the main ingredient, dissolves well in water and is efficiently absorbed by crops.
  • Through the synergistic effect of calcium and sulfur, soil quality will be recovered, the crop will grow healthily, and it will be effective in improving quality and yield.


  • Helping root growth
  • Healthy growth with cellular strengthening of crop plants ⇒ Yield increase
  • Improved freshness and storability

Especially recommended crops


Reducing symptoms caused by calcium deficiency

  • Tomatoes and green peppers (reducing bell rot)
  • Cabbage and lettuce (reducing core rot, peripheral rot)
  • Radishes, turnip (reducing red core symptom)
  • Cucumber (reducing brown core rot)
  • Potato (reducing brown core rot, producing smooth surface)
  • Broccoli (reducing flower bud rot)

Freshness preservation with mineral supplement

  • Edamame (green soybeans), white onion

Reducing collapse

  • Sweet corn
card Potato
Fruit trees
  • Nurturing of coloration in many kinds of fruit
  • Grapes. Particularly large fruit (raising product quality by decreasing fallen fruit)
  • Apple (raising product quality by protecting the surface)
  • Pear (reducing fallen fruit and mitosis)
  • Cherry (reducing light saltiness of the fruit)
card Cherry
  • Chrysanthemum, lilies (preventing leaf frost)
Paddy rice
  • Nurturing root growth and improving quality of crop (base fertilizer)
  • Reducing collapse and improving ripening grade (fertilizer application in the middle of period)

Darwin 5000 Applications

Also used for potatoes in Ibaraki prefecture.
Difference in yield of potatoes
Left: Darwin Right: Traditional

Rules for using Darwin 5000 and content analysis

Crop Application method Usage period Amount used per 1a
Vegetables Full-scale mixture During base fertilizing 80 ~ 120kg (4 ~ 6 bags)
Flowers Full-scale mixture During base fertilizing 80 ~ 120kg (4 ~ 6 bags)

*Please analyze the soil before planting, and adjust according to soil and soil pH.

Analysis example
  • Calcium(CaO)29%
  • Sulfur(S)15.7%
  • Total phosphoric acid(P2O5)0.4%
  • Held water(H2O)0.5%
  • pH4.3