PART 2 - 2022 Flashcards by Blessed Angela Lascuña

Type of irrigation which can be used in practically all kinds of soil, area, topography and weather

drip irrigation

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In the areas between 300
-600 in the northern hemisphere, the wind in the atmosphere blows

clockwise

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Which of the following is a cruciferous vegetable

Brassica rapa chinensis

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A farmer has 2,400 feet of fencing and wants to fence off a rectangular field that borders a straight river. He needs no
fence along the river. What are the dimensions of the field that has the largest area?

600 by 1,200

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Dragon fruit, also known as pitahaya or strawberry pear, is juicy with a slightly sweet taste that some describe as a
cross between a kiwi, a pear, and a watermelon. This tropical fruit known for its vibrant red skin and sweet, seedspeckled pulp has a scientific name of

Selenicereus undatus

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Selenicereus undatus

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Ilocos, Jalajala, Berkjala and Diani are breed of Philippine native

Swine

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Ogee, Glacis, Corewall and Gated are types of

diversion dam

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The total quantity of water taken from a stream, lake or reservoir, or removed from the ground in order to irrigate
a crop

diversion water requirement

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The ratio of the particle size at 60% passing to that at 10% sieve passing

Uniformity coefficient

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Type of precipitation produced by the movement of air due to varying barometric pressure

cyclonic

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Are common vector spatial data format that uses an index to link files and were originally developed by ESRI,
Inc., as a way to store point, line, and polygon features

shapefile

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Sprinkler system that must be moved manually through a series of positions during the course of irrigation

Periodic-move system

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. Irrigation system involving applying water slowly to the soil ideally at the same rate with crop consumption

Drip

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Find the probability of drawing a face card from an ordinary deck of cards

3/13

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Involves dripping water into the soil at very low rates from emitters where water is applied to plants

trickle irrigation

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Water resources data for irrigation establishment includes

a. Quantity and quality of water
b. Water rights
c. Cost of water
d. All of the above

AOTA

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In drip irrigation, a CV of 0.11-0.15 in the emitter discharge and pressure is considered

poor

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Type of surface irrigation applicable to land with slope of 0.05-3%, course to moderate-textured soil, and with
relatively low to moderate efficiency and uniformity of application

Furrow irrigation

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Part of the sprinkler irrigation system that delivers water from the mainline to the sprinkler heads

Laterals

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In basin irrigation, the minimum design application efficiency is 70%; and the minimum time required to cover the
basin should be ____ of the time required for the net application depth to infiltrate the soil

60%

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For furrow irrigation, recommended furrow spacing for fine sandy soil is ____

60 cm

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In how many ways can seven different beads be made into a bracelet?

360

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For Gabion check dam, which dimensions of box gabion may not be used
a. 1 m × 1 m × 1 m
b. 0.85 m × 0.5 m × 2 m
c. 0.75 m × 1.5 m × 3 m
d. 2 m × 2 m × 2 m

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Flow with velocity of 1 m3 /s and a depth of 1 m

Subcritical

Volume of water stored in reservoir between the minimum and normal water level

ACTIVE STORAGE

In unlined irrigation canals, which is not a component of conveyance loss a. Evaporation b. Seepage c. Percolation d. None of the above

NOTA

Depth of water above a given datum

STAGE

. For crop irrigation, re-used wastewater should have a SAR of

<18

Amount of rainfall that falls directly on the field and is used by the crops for growth and development, excluding deep percolation, surface runoff and interception

EFFECTIVE RAINFALL

In open channel, the grade line of the water profile plus the velocity head is

Energy grade line

Ratio of the flow area and the wetted top width

Hydraulic depth

What must be the maximum sprinkler spacing in rectangular patter if the average wind speed in the area is less than 10 kph

40% between sprinkler, 65% between laterals

Boulder check dam should have a uniform channel bed of 900 m, catchment area of less than 20 ha and a dam height of

1.5 m

The most appropriate type of graph for the data “Number of Monthly CoVID-19 Cases in the Philippines from 2020 to 2022”

line graph

In drip irrigation, pipe size shall be selected depending on

no. of outlets

Without considering special cases, how many circles are determined by nine points?

. Ratio between water received at the inlet for block of field to that released at the project’s headworks

. Conveyance efficiency

The number of bands in a raster image is referred to as its _______

spatial resolution

. How many tetrahedrons are determined by nine points, with no four of which lie in the same plane?

126

Estimation of the chance or likelihood of occurrence of a given event by determining the frequency curve of the best fit to samples of hydrologic data

Hydrologic frequency analysis

In statistics, it is any quantity which may take on different values

Variable

It is based on grid cells and represent the world as a “checkerboard,” with uniform values within each cell

Raster data

The inability of the seed to germinate due to factors which are inherent in the seed

dormancy

If the equation of the parabola with vertex at (h,k) is (y – k)2 = 4a(x – h)

The axis is parallel to 0x and the curve opens to the right

It is the process of defining exactly where on the earth’s surface an image or raster dataset was created.

Georeferencing

The interior section of Rockfill Dam composed of semi-pervious material

filter zone

It is usually a rectangular concrete trough supported on a bench excavated into a hillside and through which water flows into an adjoining canal

Bench flume

It is a type of GIS maps that incorporate color-coded systems to display numerical density in a given area. It is an effective way to easily relate numerical data when dealing with a large amount of data

heat maps

What is the dimension of the largest soil separate?

0.05 – 2.0 mm

Trichoderma, which is popularly used as successful plant growth enhancers, biostimulants, biofertilizers, and as effective biocontrol agents, is a

Fungus

A SSIP with small scale earth dam structure (5-15 m high) and projected to serve at least 15 ha of farmland

SWIP

A guide to determine the amount of fertilizer to be applied to satisfy the fertilizer requirement of a crop to increase yield

Fertilizer recommendation

The points (1,4), (7,0), (5,-3), (-1,1) are vertices of a polygon. Determine the polygon and its area.

rectangle

Quantitative variables which can take only specific or isolated values along a scale

Discrete variables

A young female cattle usually under three years old that has not yet given birth

heifer

Which of the following is a measure of relative dispersion of a given set of data

Coefficient of variation

Which of these can destabilize a dam?

reservoir water pressure

Advantages of using soil bioengineering techniques include, except: a. low cost and lower long-term maintenance cost than traditional methods b. improved strength over time as root systems develop and increase structural stability c. availability of locally adapted plants d. environmental benefits of wildlife habitat, water quality improvement, and aesthetics

c. availability of locally adapted plants

. It is a remote sensing method that uses light in the form of a pulsed laser to measure ranges (variable distances) to the Earth

LiDAR

Bacterium that inhabits the roots of legumes in nodules and capable of fixing nitrogen to make N available to plants

Rhizobium

In an irrigation system, a head gate functions as a

Discharge regulating structure

. It is a graphic representation of an area that shows detailed information about the landscape and relief of the Earth’s surface. It enables us to visualize a three-dimensional (3D) terrain from a flat piece of paper

topographic map

In surface irrigation, intermittent application is done to

Attain relatively uniform application

Remedy when there is trapped air in the suction side of the pump

Loosen priming plug until air comes out and tighten again

What is the tension equivalent to the field capacity?

0.3 bar

A pond bottom slope of 2000:1 is equivalent to

0.05 % slope