What factors affect f.Describe the probable root system of a crop which has been applied withfrequent, light and widely spaced heavy irrigation.What factors affect the irrigation scheduling?h. If soil moisture is to be restored to field capacity, how much water should beapplied if moisture tension reaches the permanent wilting point?

Irrigation scheduling means scheduling the amount of watering and frequency of watering to be…

Answered: What factors affect the irriqation…

Engineering

Civil Engineering

What factors affect the irriqation scheduling? q.

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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Q1 B: For a project the following data were measured on 20th of January morning: soil moisture content at field capacity 38%, soil moisture content at permanent wilting point 18%, initial water content 26%, root zone depth 90cm, plant consumptive use (cu-4mm/day). On 25th of January an effective rainfall of 10mm took place on the field. On 28th January evening, gross depth was applied in order to have a full irrigation. Runoff losses was 10% of net depth. Find initial water content on 31th of January. If the farm total area is (60 ha), find water duty in (N.Donum/G. m/sec) (35 marks)
Calculate the amount of moisture in silt soil for a crop with a 5-foot root zone. The field capacity is 35 percent and the permanent wilting point is 14 percent. Assume the standard dry unit weight of silt soil.
In a 5 ha area, it was determined that the soil volumetric field capacity and permanent wilting points are 25% and 15% respectively. Crop consumptive use is 5mm/day, application efficiency is 80% and irrigation application rate is 32m³/hr. The allowable soil moisture depletion is 60%, apparent specific gravity is 1.2 and the depth of rootzone is 0.8m Determine the net depth of irrigation water to be applied (mm)
A. Is it practical for irrigation farmer to modify soil structure? Why? b. What happens to soil moisture tension as the soil becomes drier? c.Which class of soil water is most important to irrigation? How about the drainage? d.Which would you prefer to use, the resistance of porous block or the tensiometer? Why?
a. What factors affect soil moisture stress? b. Aside from methods previously discussed, can you suggest other methods or techniques which can be used to identify moisture stress? c. Why is crop yield reduced when soil is too wet or too dry? d. Assuming that field capacity is 28%, determine the irrigation water depth required, when soil moisture is found to be 10% before irrigation. Assume root zone depth = 0.50 meter. e. If consumptive use rate is 4 mm/day and effective rainfall is on the average 1.5 mm/day, what is the interval of irrigation?
Wheat is to be grown in a field having a field capacity equal to A andpermanent wilting point is B. Find the storage capacity in 80cm depth ofsoil, if the dry unit weight of soil is 1.2 g/cc. If the irrigation water is to besupplied when the average soil moisture falls to 15%, find the water depthrequired to be supplied to field if the field application efficiency is 70%.What is the amount of water needed at the canal outlet if the water lost inthe water course and the field channel is 15% of the outlet discharge.
Third Stage Irrigation and Drainage Exgincring Group D: Qr: 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 Mr. Maarnar ALTau 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).
Given : Soil moisture @ field Capacity is 40% volume basis Wilting Point is 16% Allow 1/4 of the total available moisture to be retained in the soil before applying irrigation water. 1-m soil depth to be wetted. Required: *Soil moisture content at the time of irrigation (or before irrigation) *ha-cm/ha of water needed to bring the soil moisture back to field capacity
Following data are given: 1. Available moisture holding capacity of soil-12.5cm/m depth of soil 2. Root zone depth of crop=0.8m 3. Consumptive use=5mm/day If moisture depletion is allowed to 50% of available moisture then the frequency of irrigation will be ___days.
(b) Calculate the frequency of watering to ensure efficient irrigation for the given crop, if Field capacity of soil = 30 % Permanent wilting point = 12 % Dry density of soil = 15 kN/m Effective depth of root zone = 750 mm Daily consumptive use of water = 10 mm
If the ratio between the length of the tape to its width is 45, the number of tapes used to irrigate a field 300 tapes, the irrigation time per tape is 55 minutes, irrigation current is 30L / sec, calculate the length of the tape and the design flow rate in units of M '/ hr if you know that the irrigation efficiency is% 70, the effective root zone depth is 1.5 m, the moisture depletion rate is 60%, and the water holding capacity is 1.3 mm / cm. and the available
Dr. Masumer ALTus Q: 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 irigate 12 mishara in discharge equal to 75 t/s and 65% the efficiency of irrigation (E.).