Question

Classify fertilisers according to the nutrientsthey supply to plants.

Answer 1

Answer:

Fertilizers are divided according to three basic aspects:

• According to efficiency

1. straight fertilizers
2. auxiliary substances

• According to origin

1. mineral fertilizers
2. manure

• According to phase

1. solid fertilizers
2. liquid fertilizers

Answer 2

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The term fertilizer is defined in the Act. No. 156/1998 Coll., as amended. Fertilizers are considered substances containing nutrients for nutrition of crop plants and forest trees, to maintain or improve soil fertility and positive influence on yield or quality of production

Fertilizers are divided according to three basic aspects:

According to efficiency

straight fertilizers

auxiliary substances

According to origin

mineral fertilizers

manure

According to phase

solid fertilizers

liquid fertilizers

Staight fertilizers are substances that contain one or more plant nutrients, typically in large amounts, either mineral or in organic form. They provide plants with macro- or micronutrients, including mineral fertilizers and manure.

Auxiliary substances contain plant nutrients in larger quantities, thus not supply nutrients to plants, but allow improving nutrition by editing environment or affecting the metabolism of plants so that the plants can utilize larger quantities of nutrients to yield formation.

Devided into:

Auxiliary soil substances – substances without effective amount of nutrients which would biologically, chemically or physically affect the soil, improving soil state or increasing the efficiency of fertilizers

plant preparations – substances without effective amount of nutrients which otherwise favorably affect the development of cultivated plants or the quality of plant products.