Manures & Fertilizer
Manures
The deficiency of plant nutrients and organic matter in the soil is made up by adding manures and fertilizers to the soil of crop-fields. Both manures and fertilizers are major sources of nutrients of plants, so they are used in crop production.
Besides water CO2 and sunlight plants required no. of elements for their growth. These elements are known as nutrient. Plants get their elements from the salt of these elements present in the soil. But after repeated cultivation of plants soil become poor in these elements. The substance added to the soil to make up the deficiency of the essential elements these by increasing the fertility of soil are called fertilizers.
Qualities of Good Fertilizers
1. The elements present in good fertilizers must be easily available to plants.
2. Good fertilizers must be sufficiently soluble in water.
3. Good fertilizers should contain nothing injurious to plants.
Theory of Chemical Fertilizers
The majority of the chemical fertilizer whether simple or mixed are in organic compounds, the generally contain cation likes Ca2+, K+, NH4+ etc. and are soluble in water. Therefore, these can be identified from their aqueous solution by the regular systematic scheme used for qualitative mixture analysis.
Analysis of Chemical Fertilizers
All the plants need nutrients for their growth but each plant may not require the same kinds, to meet the requirement of particular crop we first need to analyse the soil and then select the fertilizer. This proper selection of fertilizer is possible if we know the cation and anion present in a particular fertilizer.
The analysis means identification of acid and basic radicals present in fertilizers.
In general, a chemical fertilizer may contain :
Anions : Cl–, NO3–, SO42–, PO43– etc.
Cations : Ca2+, K+, NH4+ etc.
Manures or natural fertilizers
Manures are natural fertilizers. They are bulky sources of organic matter which supply nutrients in small quantities but organic matter in large
The deficiency of plant nutrients and organic matter in the soil is made up by adding manures and fertilizers to the soil of crop-fields. Both manures and fertilizers are major sources of nutrients of plants, so they are used in crop production.
Besides water CO2 and sunlight plants required no. of elements for their growth. These elements are known as nutrient. Plants get their elements from the salt of these elements present in the soil. But after repeated cultivation of plants soil become poor in these elements. The substance added to the soil to make up the deficiency of the essential elements these by increasing the fertility of soil are called fertilizers.
Qualities of Good Fertilizers
1. The elements present in good fertilizers must be easily available to plants.
2. Good fertilizers must be sufficiently soluble in water.
3. Good fertilizers should contain nothing injurious to plants.
Theory of Chemical Fertilizers
The majority of the chemical fertilizer whether simple or mixed are in organic compounds, the generally contain cation likes Ca2+, K+, NH4+ etc. and are soluble in water. Therefore, these can be identified from their aqueous solution by the regular systematic scheme used for qualitative mixture analysis.
Analysis of Chemical Fertilizers
All the plants need nutrients for their growth but each plant may not require the same kinds, to meet the requirement of particular crop we first need to analyse the soil and then select the fertilizer. This proper selection of fertilizer is possible if we know the cation and anion present in a particular fertilizer.
The analysis means identification of acid and basic radicals present in fertilizers.
In general, a chemical fertilizer may contain :
Anions : Cl–, NO3–, SO42–, PO43– etc.
Cations : Ca2+, K+, NH4+ etc.
Manures or natural fertilizers
Manures are natural fertilizers. They are bulky sources of organic matter which supply nutrients in small quantities but organic matter in large