Plant Nutrients And Fertilizers

Our discussion and selection of fertilizers should begin with a brief overview of plant nutrition. At least 18 elements are considered to be essential for plant growth and reproduction, and a few others are beneficial for certain plants. Plants obtain three of the macronutrients, carbon (C), hydrogen (H), and oxygen (O), from air and water. The other 15 elements are normally absorbed from the soil by the plant roots. 

This group of 15 elements is divided into 3 groups:

1.Primary nutrients: Nitrogen (N), Phosphorous (P) and Potassium (K). 

2.Secondary nutrients: Calcium (Ca), Magnesium (Mg) and Sulphate (S).

3.Trace elements: Zinc (Zn), Iron (Fe), Manganese (Mn), Copper (Cu), Boron (B), Molybdenum (Mo), Cobalt (Co), Sodium (Na) and Chlorine (Cl). 

According to the law of "limiting factor", if one nutrient is deficient, other nutrients cannot compensate for the deficiency, and the crop may suffer from decreased quality and/or yield. All of these nutrients should be provided in the right concentrations and adequate ratios.

4.Rare earth elements: Lanthanum (La), Cerium (Ce).

Although the rare earth elements are not necessary for plant, they have been successfully used at low concentrations as fertilizers for decades. Both yield increases and quality improvements were achieved in multiple plant species including cereals, fruits and vegetables after rare earth elements application.

The ability of some nutrients to be absorbed by plants is largely dominated by the activities of soil microorganisms. organic matter increases the crop yield, particularly on poor soils. This effect we call the "plus factor". The organic matter requirement can be supplied with an organic fertilizer, such as Humic acid, Fulvic acid, Amino acid, Seaweed extract, etc.

5.Organic Fertilizers: Humic acid, Fulvic acid, Amino acid, Seaweed extract, etc.

Many practices in the farms proved that a combined use of mineral fertilizer and organic fertilizer will increase the crop yield by 3-5 %. 

6.Multifunctional Fertilizers: organic NPK, Soluble NPK+TE, Amino acid NPK, Mineral-organic fertilizers, etc. 

In order to meet the varied needs of different growing stages of crops and soil condition of different area, many Multifunctional Fertilizers are designed. They are suitable for soil application, fertigation and foliar application.