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Effects of fertilizer with gypsum as its main raw material

Three major elements of fertilizer and trace elements

Fertilizer is essential for growing crops!
If the necessary nutrients are insufficient in the crops, growth will be bad or failure will occur. Among various nutrients, nitrogen, phosphoric acid and potassium are particularly important and are said to be the three major elements.
In addition, nutrients such as calcium, magnesium, sulfur, and iron are necessary, but as they only have small amounts, they are said to be trace elements. However, if one of these elements is insufficient, even if there are enough other elements, it will affect crop growth and in some cases will cause yield deficiency.

Cabbages

Grass pasture

Function of calcium
Calcium is important as a component that makes human bones and teeth strong, and at the same time it has a function to firmly fix cells and cells for crops, and a component essential for nurturing crop growth

Function of sulfur
Components indispensable for traits such as proteins, amino acids, vitamins

The effect of "Darwin" fertilizer

"Darwin", which has calcium sulfate (gypsum: CaSO4) as its main ingredient, is an effective fertilizer, calcium fertilizer containing calcium (Ca) and sulfur (S). There are types that are used by spreading it on the soil and types that are sprayed on the foliage and fruit surface. You can expect further growth of crops by combining them. Moreover, we can expect not only fertilizer effect, but also effect to make rich soil by modifying the land where crops are difficult to grow due to salt damage. (Soil improvement: agglomeration and desodification)

Although the calcium content is adequately contained in the soil examination, crops tend to be deficient in calcium, the soil becomes alkaline, and the growth of the crop becomes worse.

・ Calcium is not effective
　　　↓

　Caused by water-soluble calcium deficiency

・ Becomes alkaline
　　　↓

　Caused by excessive use of quicklime, slaked lime, charcoal, shellfish 　

Calcium-deficient tomato

Darwin fertilized tomatoes

What is the condition of calcium that works effectively in crops in the soil?
  • Soluble in water (solubility)
  • Should not significantly affect soil pH level
  • Should not cause chemical damage
  • Easy to handle and store, and safe calcium (stability)

"Darwin (calcium sulfate)" is the most suitable!

Comparison with other calcium resource

Particular Darwin Calcined lime Hydrated lime Calcium
carbonate		 Fossilized seashell Calcium
phosphate		 Calcium
chloride		 Calcium
nitrate		 Magnesia lime
Principal component
chemical formula		 Calcium
sulfate
CaSO4		 Calcium
oxide
CaO		 Calcium
hydroxide
Ca(OH)2		 (Limestone)CaCO3 Calcium
carbonate
CaCO3		 Calcium hydrogen
phosphate
CaHPO4		 CaCl2 CaNO3 Calcium carbonate,
magnesium carbonate
Solubility in 100g of
water		 0.22g 0.13g 0.19g 0.002g 0.002g 0.02g 59.5g 226g 0.03g
PH in the soil Neutral Strong alkali Strong alkali Weak alkali Weak alkali Neutral Neutral Neutral Weak alkali
Thickening effect component Calcium
Sulfur		 Calcium Calcium Calcium Calcium Calcium
Phosporic acid		 Calcium Calcium
Nitrate
Nitrogen		 Calcium
Magnesium
Stability Stable Reacts with water
Correlate with heat		 Hygroscopic Stable Stable Stable Large
hygroscopicity		 Large
hygroscopicity		 Stable
Presence or absence
of excessive fault		 None Present Present None None None Present Present None
Designation of
fertilizer method		 Designated as special fertilizer Designated as
ordinary lime-based
fertilizer		 Designated as
ordinary lime-based
fertilizer		 Designated as
ordinary lime-based
fertilizer		 Designated as
ordinary lime-based
fertilizer		 Designated as
ordinary phosphate-
based fertilizer		 Designated as
special
calcium fertilizer		 Designated as
ordinary nitrogen-
based fertilizer		 Designated as
ordinary magnesia
fertilizer
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