The following are advantages of the sprinkler method of irrigation except

The question is asking about the advantages of the sprinkler method of irrigation. The sprinkler method of irrigation is a system where water is distributed through sprinklers that spray water over the crops.

Option A states that the rate of application of irrigation water can be controlled. This means that farmers can adjust the amount of water that is sprayed onto the crops, which is an advantage because different crops have different water requirements. Farmers can ensure that the right amount of water is applied to each crop, promoting healthy growth and reducing water wastage.

Option B states that the portable nature of many sprinkler systems makes them suitable for use. This means that sprinkler systems can be easily moved from one location to another, allowing farmers to irrigate different areas of their land. This flexibility is an advantage because it allows farmers to efficiently water different crops or areas that need irrigation.

Option C states that the sprinkler system can be made automatic. This means that the sprinkler system can be set up to turn on and off automatically, without the need for manual operation. This is an advantage because it saves time and effort for farmers, as they do not have to manually control the irrigation process.

Option D states that the method can be used where topography affects the harrowing of land. This means that even if the land is not suitable for other methods of irrigation, such as furrow or flood irrigation, the sprinkler method can still be used. This is an advantage because it allows farmers to irrigate their land even if it has uneven or hilly terrain.

Option E, which is marked as the correct answer, states that the method may be difficult for local farmers to use. This means that some local farmers may find it challenging to adopt and use the sprinkler method of irrigation. This could be due to factors such as cost, lack of knowledge or access to the necessary equipment. While the other options mention advantages of the sprinkler method, option E mentions a disadvantage or limitation of the method.

In conclusion, the sprinkler method of irrigation has several advantages such as controlled application of water, portability, automation, and suitability for challenging terrains. However, it may not be easy for all local farmers to use due to various reasons.