1. By P.Kandasamy BTE – 06 -014

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 Rice0.8511.151.31.251.10.9 Maize0.50.60.70.8 0.60.5 Wheat 0.50.70.750.7 Sugar cane 0.750.80.85 0.90.9511 0.90.850.75 Cotton 0.50.60.750.90.850.750.550.5 Vegeta bles 0.50.550.60.650.70.750.8 0.70.60.550.5 Citrus0.50.55 0.6 0.650.7 0.650.60.55

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 77.360.58.113.13 Feb 81.90.557.43.33 Mar 82.670.68.444.18 Apr 88.20.658.434.83 May 90.70.78.815.59 June 89.460.758.575.75 July 88.380.88.846.25 Aug 86.3150.88.746.03 Sep 87.2150.78.265.04 Oct 84.920.68.294.22 Nov 80.510.557.893.49 Dec 81.410.58.083.28

6. U= 55.12 inches = 140cm

7. http://books.google.co.in/books?id=yANwmTjf588C&pg=PA103&lpg =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 www.nih.ernet.in/Method3.htm Irrigation theory & practice by A M Michael