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Special Report: Darwin 1000

calcium supplement for many kinds of cropsDarwin 1000

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

  • This product will affect the ph of the 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

Edamame (green soybeans)


Sweet corn

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)
  • 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)

Farmer’s voice

Shiono Shoten (Tone Numata district, Gunma prefecture): Currently using this product for growing “Tengu Brand” edamame

Shiono Shoten is managing the entire process from production to sales of “Tengu Brand Edamame”
cultivated and shipped by the Numata Tone Vegetable Marketing Cooperative (around 200 farmers). "Our shop regularly conducts soil analysis for each field, and we are providing guidance for using Darwin fertilizer
as a mineral supplement material. As part of our quality assurance, we confirm that it has positive effect on our freshness management. "

Konbe Farm (Mt. Iwakisan foothills, Hirosaki city, Aomori prefecture): Currently using this product for growing “Dakekimi” sweet corn

Konbe is one of the farmers raising “Dakekimi” sweet corn with integrated production, from cultivation to sales.
"In the foothills of Mt. Iwate in Aomori prefecture, spring comes late, and sowing begins in May. So, “Datekimi” harvest season begins in mid August. We hope that Darwin is able to reduce crop collapse caused by the typhoon in the second half of the harvest season and maintain freshness, so we are using as the base fertilizer. "


Hosono Pear Farm (Tomisato city, Chiba prefecture): Currently using this product for growing pears.

Hosono is certified by the Chiba prefectural government as having “Chiba Eco-agricultural Product Certification”, and manages the combined farm of vegetables and fruit trees. Fruit tree sales are focused on direct sales.
"Reduction of fallen fruit trees during harvest time and mitigation effect of mitosis are linked to yield increase."


※Some farmers also use foliar spray agent (FC 100)

Difference of harvested potatoes
  • Comparison of harvest volume


    Left: Darwin Right: Traditional

  • Skin comparison


    Left: Darwin Right: Traditional

Rules for using Darwin1000

Crop Application method Usage period Amount used per 10a
Vegetables Full-scale mixture
Applying fertilizer to the side row
During base fertilizing 3~5 bags
During supplementary fertilizing 2~3 bags
Fruit tree Full-scale dispersion After-season fertilizing
Or during base fertilizing (autumn fertilizing)
2~3 bags
Paddy rice Full-scale mixture
Applying fertilizer to the side row
During seedling stage Floor soil 100g per m 2
During base fertilizing 2~3 bags
During supplementary fertilizing During regulative fertilizing 1~2 bags
During fertilization for head-sprouting 1~2 bags
Grass pasture Full-scale mixture During base fertilizing 3~4 bags
During supplementary fertilizing 1~2 bags
Flowers Full-scale mixture
Applying fertilizer to the side row
During base fertilizing 3~4 bags
During supplementary fertilizing 1~2 bags

※Application method may vary depending on the type of crop. For details, please contact us or our distributors.
※Side row fertilizer application should be around 70% of the whole surface spraying.

Analysis example
  • Calcium(CaO)29%
  • Sulfur(S)15.7%
  • Total phosphoric acid(P2O5)0.4%
  • Held water(H2O)0.5%
  • pH5.5

Drawin 1000 application example

Test sample:
Test location:
Mr. E’s farm in Tomisato city, Chiba prefecture
Planting density:
Ridge spacing: 100cm, intrarow spacing: 30cm
Survey method:
Comparative survey between the yields of the whole area mixed with 80kg / 10a of Darwin 1000 (Darwin area) before planting in late February 2007, and the yield of traditional method.
Survey result:
5 potatoes were taken from each area, measured three times and averaged
Area Weight of 5 potatoes (g) Weight of each potato (g) Weight of 10a yield (kg)
Darwin 6,474 156.6±62.5 4,316.0 (105.7% compared to traditional method)
Traditional 6,124 151.8±67.9 4,082.9
Survey date: June 26th, 2007
  • The average weight of one potato in Darwin area was heavier than in the traditional area, and the variation in weight decreased.
  • Darwin area has increased yield by about 6% compared to the traditional area.
  • Scab disease seems to be less likely to occur in Darwin area compared to the traditional area (photo).

Comparison of scab disease occurrence in potatoes
(Left: Darwin Right: Traditional)