I am working on nutrient budgeting in soil and my research trial consists of a total number of 48 plots. How can I quantify the total amount of irrigation water entering each plot during the season? Kindly help and also send the relevant literature.
Dear Abid,
It is a questions of flow measurement.
You can install a V-notch to measure the main watercourse/ditch inflow towards your fields, that is one point measurement of discharge coming for application to your experimental area. Then, you have the choice of diverting this water from the main watercourse/dicth through a direct cut in the watercourse for each plot, or u can use pipes (for water diversion) to work as syphon, and again measure the discharge entering to your individual plot . The number of syphon will depend upon the required discharge. It is easy to measure the flow using syphon.
Then you can use equations given in books for discharge calculation both for V-notch and syphon.
Dear Abid,
I agree with Muhammad but I want to add some extra information about irrigation of paddy fields. First of all you should determine the amount of water that your crop needs during the season. Then add this amount to water requirements for leaching, paddling, etc. Finally, you can choose an appropriate equipment to satisfy the total amount of water required for various needs of the field during an specified season. However, as water delivery systems do not deliver a particular amount of water during the season you should measure the flow via the methods that Muhammad mentioned before.
Dear Abdi
I have different irrigation treatments , i have used current meter device to measure the amount of water entring the plots, but the experimental area was divided into replicates which reprsent different irrigattion treatments, for each treatment we can measure the amount of water added and after that we can calculate the average from each rep and in the end of the season you can calculate the sum of the total amount of water applied during the whole season. For example first irrigation, second irrigation , etc
I appreciate the contributions of all. But it is important to know the water management allow deficit. secondly, the volume of water required my the field depend so much on the delivery efficiency of irrigation device, putting the distance from the water source into consideration.
I appreciate the contributions of all. But it is important to know the water management allow deficit of the field. secondly, the volume of water required by the field depend so much on the delivery efficiency of irrigation device, putting the distance from the water source into consideration.
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