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By what number should the value from the...

By what number should the value from the phytometer method be multiplied when it comes to obtain possible field results?

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asked Jul 28, 2023 in Irrigation Engineering by Carter (75.2k points)

By what number should the value from the phytometer method be multiplied when it comes to obtain possible field results?

(a) 5

(b) 6

(c) 9

(d) A Constant Number

This question was addressed to me in an interview for job.

Asked question is from Water Requirements of Crops in portion Water Requirements of Crops of Irrigation Engineering

irrigation engineering
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answered Jul 31, 2023 by Greg (106k points)

The correct option is (d) A Constant Number

For explanation I would say: Since the phytometer method is tested in lab in artificial conditions, the obtained result is only relevant to the lab due different soil conditions in the open field. So, therefore in order to get or obtain exact field results we need to multiply the value of transpiration loss obtained from the method with a constant number.

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