What is hydroponics?

Answer 1

Growing plants in a nutrient solution... without soil.

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Answer 2

Hydroponics is crop production with mineral nutrient solutions instead of soil containing silt and clay. Terrestrial plants may be grown with their roots in the mineral nutrient solution only or in an inert medium, such as sand, gravel or rockwool. A variety of techniques exist.

Plant physiology researchers discovered in the 1800s that plants absorb essential mineral nutrients as inorganic ions in water. In natural conditions, soil acts as a mineral nutrient reservoir but the soil itself is not essential to plant growth. When the mineral nutrients in the soil dissolve in water, plant roots are able to absorb them. When the required mineral nutrients are introduced into a plant's water supply artificially, soil is no longer required for the plant to thrive. Almost any terrestrial plant will grow with hydroponics, but some will do better than others. It is also very easy to do; the activity is often undertaken by very young children with such plants as watercress. Hydroponics is also a standard technique in biology research and teaching and a popular hobby. There is little commercial hydroponic crop production because it is a more expensive method than traditional agriculture.

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Answer 3

Hydroponics is crop production with mineral nutrient solutions instead of soil containing silt and clay. Terrestrial plants may be grown with their roots in the mineral nutrient solution only or in an inert medium, such as sand, gravel or rockwool. A variety of techniques exist.

The Hanging Gardens of Babylon were supposedly irrigated roof gardens but there is no evidence they used hydroponics.

The earliest published work on growing terrestrial plants without soil was the 1627 book, Sylva Sylvarum by Sir Francis Bacon. Water culture became a popular research technique after that. In 1699, John Woodward published his water culture experiments with spearmint. He found that plants in less-pure water sources grew better than plants in distilled water. Mineral nutrient solutions for soilless culture of plants were first perfected in the 1860s by the German botanists, Julius von Sachs and Wilhelm Knop. Growth of terrestrial plants without soil in mineral nutrient solutions was called solution culture. It quickly became a standard research and teaching technique and is still widely used today. Solution culture is now considered a type of hydroponics where there is no inert medium.

Advantages:
No soil is required.
Soil borne diseases are virtually eliminated.
Weeds are virtually eliminated.
Fewer pesticides may be required because of the above two reasons.
Edible crops are not contaminated with soil.

Disadvantages:
Hydroponics usually requires a greater technical knowledge than crop growth in soil (geoponics).
Hydroponics usually requires more expensive equipment than geoponics. Most hydroponic crops are grown in greenhouses or controlled environment agriculture.
Hydroponics usually requires more frequent maintenance than geoponics. If timers or electric pumps fail or the system clogs or springs a leak, plants can die very quickly in many kinds of hydroponic systems.

Answer 4

Hydroponics(water culture) the growth of the plants in a sterile medium , such as sand or vermiculite, to which nutrients are added in a balanced liquid fertilizer

Answer 5

first wash the plant and remove all the soil. now dip the plant in a pot full of nutrients, this method is used to determine the presence or importance of nutrients.

Answer 6

It is growing the plant without any soil. Hydro means water

Answer 7

Growing of plants in constant supply of water with the help of a support and the use of some saw dust is hydroponics.It is ideal in zero-gravity conditions.

Answer 8

the process of growing plants without soil