Wheat is to be grown in certain place, the climatic conditions of which are tabulated below, Determine evapotranspiration and consumptive irrigation requirement (C.I.R) of crop. Also determine field irrigation requirements (F.I.R) if water application efficiency is 80%. Use Blaney Criddle equation with crop factor of 0.8. Month Average-monthly Useful average Monthly %age of day/time hours Temperature (C) Rainfall NOV 18.0 7.20 1.70 DEC 15.0 7.15 1.42 JAN 13.5 7.30 3.01 FEB 14.5 7.10 2.25

Wheat is to be grown in certain place, the climatic conditions of which are tabulated below, Determine evapotranspiration and consumptive irrigation requirement (C.I.R) of crop. Also determine field irrigation requirements (F.I.R) if water application efficiency is 80%. Use Blaney Criddle equation with crop factor of 0.8. Month Average-monthly Useful average Monthly %age of day/time hours Temperature (C) Rainfall NOV 18.0 7.20 1.70 DEC 15.0 7.15 1.42 JAN 13.5 7.30 3.01 FEB 14.5 7.10 2.25

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Q.13, d.
High-drainage density indicates poor * drainage conditions true O False O Calculate the evapotranspiration losses by using Blaney-Criddle method, the ‘consumptive use coefTicient for the wheat crop is 0.75 Nionihs Temperature | Monihly per cent daylight| Nov. 166 76 Dec 1295 73 Jan. 1095 74 Feb. 146 12 32.01cm 320.1 mm/ month 32 cm/ month 0000 33.2 cm/year
has The crop coefficient curve (Kc) of a crop been developed for a location (see the figure below). The crop is planted on April 11 and harvested on Oct. 15. The estimate potential crop evapotranspiration (ET) using the Penman- Monteith method is given below. Estimate the evapotranspiration from the crop over the entire growing season for this location. Assume the is well watered and there is no significant water stress. crop Month ETo (mm/day) 1.2 12 1.0 10 Crop coefficient, K 0.8 0.6 D A B 0.4 April 3.5 May 4.0 June 4.5 0.2 July 5.0 Aug 5.0 0 Sep 3.0 ° 20 40 60 80 100 Growing season, % Oct 2.0
Q1: The water content at the field capacity is 27.2% by weight and it was 19% by weight for irrigation (wilting point), depth of the root zone is 0.92m and the apparent specific gravity is 1.3. Find: 1. The depth of water required to reach moisture in this soil to its field capacity. 2. The time required to irrigate 12 mishara in discharge equal to 75 €/s and 65% the efficiency of irrigation (Ea).
Irrigation water is to be provided to a crop in a field to bring the moisture content of the soil from the existing 18% to the field capacity of the soil at 28%. The effective root zone of the crop is 70 cm. If the densities of the soil and water are 1.3 g/cm³ and 1.0 g/cm³ respectively, the depth of irrigation water (in mm) required for irrigating the crop is C
Civil.irrigation,
Freq.of irrigation.
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