What is terraced irrigation?

What is terraced irrigation?

Each step is irrigated by water transported down the mountainside from springs, rivers, or reservoirs, using a complex network of canals, sluices, and pipes. The terraces allow the hillside to be cultivated with a minimum of soil erosion; they serve to keep irrigation water on the fields. Photograph 1.

How is irrigation done in terrace farming?

The terraces were built to make the most efficient use of shallow soil and to enable irrigation of crops by allowing runoff to occur through the outlet. The Inka people built on these, developing a system of canals, aqueducts, and puquios to direct water through dry land and increase fertility levels and growth.

How does terraced irrigation work?

Terrace farming is a method of farming whereby “steps” known as terraces are built onto the slopes of hills and mountains. When it rains, instead of rain carrying away the soil nutrients and plants down the slope, they flow to the next terrace. Every step has an outlet which channels water to the next step.

What are the sources of water for terrace cultivation?

In this method, the water source such as streams from the hills is tapped. Streams emerging from the forest are channelled to irrigate a series of terrace farming fields, water flows continuously from the upper to the lower terraces.

What are terraces used for?

Terraces are used to reduce sheet and rill erosion and prevent gully development. They are most effec- tive when used in combination with other practices such as conservation tillage, crop rotations, and field borders.

What is meant by terrace farming?

terrace cultivation, method of growing crops on sides of hills or mountains by planting on graduated terraces built into the slope. Though labour-intensive, the method has been employed effectively to maximize arable land area in variable terrains and to reduce soil erosion and water loss.

What are terraces used for in agriculture?

Terracing is a soil conservation practice applied to prevent rainfall runoff on sloping land from accumulating and causing serious erosion. Terraces consist of ridges and channels constructed across-the-slope.

What are the benefits of terracing?

The benefits of terracing are quite numerous, which proves its importance for humans and nature. In particular, terrace agriculture: Increases farmability and land productivity of sloped fields. Contributes to water conservation: slows down and reduces water runoffs, improves rainwater harvesting.

What are the advantages of terraces?

Terraces reduce slope length, reducing the power of flowing water to erode soil. By limiting soil erosion, terraces also improve water quality by reducing sediment and phosphorus delivered to streams, rivers, and lakes.

Why are terraces bad?

Though terraces are considered as advisable conservation practices to avoid soil and water loss, the construction and management of terraces often disturb carbon flux between the atmosphere and soil via shifting land-use type and topography, which potentially alter soil organic carbon (SOC) dynamics (Zhang, Wang, & Li.

What are the benefits of terraces?

What is a terrace system?

Terraces are earthen structures that intercept runoff on moderate to steep slopes. They transform long slopes into a series of shorter slopes. Terraces reduce the rate of runoff and allow soil particles to settle out. The resulting cleaner water is then carried off the field in a non-erosive manner.

Why terraces are not suitable for farming?

Terracing requires huge inputs of labor to construct and maintain, and when not properly maintained, the effects can be catastrophic. Unmaintained terraces can lead to mudslides, the creation of deep gulleys and increased soil erosion, particularly in sandy soils or on extremely steep terrains.

Why is terracing used?

Why are terraces useful?

Terraces reduce both the amount and velocity of water moving across the soil surface, which greatly reduces soil erosion. Terracing thus permits more intensive cropping than would otherwise be possible.

What is an example of terrace farming?

Perhaps the most well-known use of terrace farming are the rice paddies of Asia. Rice needs a lot of water, and a flat area that can be flooded is best.

What is a disadvantage of terracing?

Disadvantages include the capital cost of building terraces, and the time required to maintain terraces. Terraces that are not properly maintained will fail, and such failures can lead to gully erosion and other problems.

What is terraces in agriculture?

What crops grow in terraces?

Some typical crops grown in terraces include barley, wheat, potatoes, corn, tea, olive, grape vines, coffee, and rice. A terrace is typically about 2-3 meters wide and 50-80 meters long. Some terraces flood with rain water, such as those used to farm rice.