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By P.Kandasamy BTE – 06 -014. K= empirical seasonal consumptive use coefficient for the growing season F= sum of the monthly consumptive use (f) for the.

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Presentation on theme: "By P.Kandasamy BTE – 06 -014. K= empirical seasonal consumptive use coefficient for the growing season F= sum of the monthly consumptive use (f) for the."— Presentation transcript:

1 By P.Kandasamy BTE –

2 K= empirical seasonal consumptive use coefficient for the growing season F= sum of the monthly consumptive use (f) for the growing season k = empirical consumptive use crop co efficient for the month f = t x p/100 t = mean monthly temperature p = monthly daylight hours expressed as per cent of daylight hours of the year.

3 CROPMONTHS JANFEBMARAPRMAYJUN E JULYAUGSEPOCTNOVDEC Rice Maize Wheat Sugar cane Cotton Vegeta bles Citrus

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5 MonthsMean monthly temperature, o F (t) Monthly crop co-efficient (k) from table Percent day light hrs (p) from table Monthly consumptive use (inches) k.t.p/100 Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec

6 U= inches = 140cm

7 =PA103&dq=blaney+criddle+method&source=bl&ots=64j68csYbW&si g=cDIpxuNIWiWntQAqFRbkauXo- YE&hl=en&ei=YvXISZnmIsOGkQWkm4XmAg&sa=X&oi=book_result &resnum=9&ct=result Irrigation theory & practice by A M Michael

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