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:
By P.Kandasamy BTE –
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.
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
U= inches = 140cm
=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