Every living organism requires nutrients for their growth and other metabolic activities.
Every living organism requires nutrients for their growth and other metabolic activities. For their survival, they follow a mode of nutrition. We humans and animals depend on plants for nutrients. Plants have an autotrophic mode of nutrition where they prepare their own food and obtain their nutrients via photosynthesis. The soil is not fertile enough to provide essential macro and micronutrients to plants in sufficient quantity. Hence they need another source of nutrition. Manures and fertilizers are the alternatives used in agriculture for this purpose.
Agriculture is the art of growing food and cash crops for the basic requirement for every living being. This is practised through a series of phases. In ancient times they used to cultivate in a very small field by using certain procedures for their management and improvement but today the agricultural practices and technologies are growing very rapidly as it includes a set of procedures to be followed to raise crops. The different agricultural practices followed includes :
For the higher technology in farming, agriculture and agricultural practice requires the knowledge of harvesting and methods of storing and protection of the harvested crops.
Agriculture is divided into three main types:
Manures are the natural source of nutrients obtained from cow dung, leaves, human excreta, and other wastes. Fertilizers are commercial products available in different forms like solid, gas or liquid. Both manure and fertilizers contain salts and organic chemicals which consist of essential plant nutrients such as nitrogen, potassium, phosphorus in known concentrations. They make soil fertile and provide nutrients to plants for better growth and higher yield.
There are six different types of Fertilizers.
Unlike manures, fertilizers are very expensive and are used in large amounts in farming fields. As a part of crop production management, farmers largely depend on fertilizer. But they should only be used when it’s necessary. Manure should not be replaced by fertilizer as constant use of it may lead to infertility of soil and pollution. During over-irrigation, fertilizers get washed along with excess water and are unavailable for absorption by plants which cause water pollution. Also, replenishment of organic substances in the soil get affected and microbes will be harmed due to clogging of fertilizers in the soil. Sometimes fertilizers cause various plant diseases. Therefore, the amount and frequency of their use need to be checked and controlled. It should always be optimum.
Due to these disadvantages, nowadays organic farming is much preferred over fertilizer. Organic farming is a new method of farming where crops are grown with the help of natural compost.
Chemical fertilizers are considered inorganic fertilizers containing a high concentration of nutrients required for plant growth. They are composed of primary macronutrients, like nitrogen, phosphorus, and potassium compounds. Based on their composition, chemical fertilizers are further divided into different types. Listed below are the names of chemical fertilizers based on their compositions:
Fertilizers are compounds which promote plants growth. There are two types of fertilizers – organic and inorganic. Fertilizers provide the plant with the required nutrient Pesticides are the substance designed for preventing, destroying, repelling or reducing the pests which are the major cause for the damage of the crops. These substances include both chemical substance and biological agents.
Agriculture is the process of growing plants and animals for human needs. There are different types of agriculture are its main objective is to promote the quality of life, provide employment opportunities, to encourage an awareness of agriculture, improve crop production, etc.
Agriculture is one of the most widespread activities in the world and is mainly based on the primarily on nature of the land, climatic characteristics and available irrigational facilities. The different types of farming practised by the farmers in India are:
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