What are the advantages of canal?

Canals are fed by rain water received by rivers, and the water is used for irrigation. Production of crops needing more water is also possible through canals. As compared to un-irrigated soils, higher productivity per hectare is also possible due to canals. The main advantage to canals is the ease of shipping goods.

What are the disadvantages of perennial canals?

Disadvantages- Canal irrigation can cause water logging which can make the soil unproductive because water logging brings harmful salt and alkaline material to the surface level. Due to stationary water in canal many disease can be caused due to mosquitoes and insects.

What are the advantages and disadvantages of spray irrigation?

High initial capital costs (investment in equipment – sprinklers and pipes) and high operation costs due to energy requirements for pumping and labor costs. Sensitivity to wind, causing evaporation losses (under high wind condition and high temperature distribution and application efficiency is poor);

What were some problems with canals?

– high water consumption in fields close to the water source resulting in water shortages at the tail end of the scheme; – illegal manipulation of canals and structures; – siltation; – plant growth; – water losses; – frequent overtopping; and – low water levels due to canal erosion.

What is canal irrigation system?

An irrigation canal is a hydraulic system whose main objective is to convey water from a source (dam and river) to different users.

Why canal irrigation is not common in southern India?

canal irrigation is not suitable in south India because of the following reasons : The undulating relief and hard rocks make it difficult to dig canals and Wells. There is a little percolation of rain water due to hard rock structure and ground water is not available in large quantities.

What is the major benefit of perennial irrigation?

Perennials maintain the soil cover, soil structure and biota and have deeper root systems than annuals and thus provide soil stability and enhanced soil health. They can also tap available soil nutrients, enhance biodiversity, make more water available to plants, and capture and sequester carbon (See Table 1).

What are the disadvantages of spray irrigation?

Sprinkler irrigation

Pros	Cons
Fertigation and chemigation can be used for plant nutrition or pest control by injecting chemicals into the irrigation water	Sprinkler nozzles can clog with poor quality water
Center pivot systems can be programmed to start and stop at specified angles or time	Scalding can occur on crop foliage

What are the disadvantages of overhead irrigation?

Disadvantages

• Higher potential for evaporation and wind drift issues compared to drip.
• Waters both crops and weeds.
• Cannot be used on crops susceptible to foliar diseases.
• Higher potential for runoff and erosion compared to drip.

How did canals affect the environment?

One of the negative environmental impacts the canal could have is leakage of saltwater into groundwater reservoirs, thereby contaminating them. As well, the canal itself could create a physical barrier for wildlife trying to move from one area to the other.

What are the disadvantages of irrigation?

Disadvantages of Irrigation Followings are the major disadvantages of irrigation systems. Irrigation sometimes creates unrestrained excretion and percolation of water throughout the whole passage. The overflowing irrigated water gives insects a place to make their habitat which is harmful to surroundings giving rise to various diseases.

How does canal irrigation affect the water table?

Canal irrigation does not let the water table level go down. It only helps to increase the water level thus facilitating the digging of wells. Canals also serve the purpose of hydroelectricity, drinking water supply, fishery development, and navigation.

What are the advantages and disadvantages of canal lining?

Advantages of Canal Lining It reduces the loss of water due to seepage and hence the duty is enhanced. It controls the water logging and hence the bad effects of water-logging are eliminated. It provides smooth surface and hence the velocity of flow can be increased.

What are the negative effects of canal recycling?

Then respond that water quality may decline in the recycling process, lands adjacent to canals may be affected by waterlogging and salinization, Advocates of water conservation measures, such as canal lining, and an important volume of water can be lost from the wasteland.