AGR203

What is the effect of high
wind velocity on crops

Continuous use of
ammoniacal or ammoniumforming fertilizers on acidic
soil should be avoided as it
tend to make the soil

3. Is not a macro nutrient

is refers to the number of
days between any two
subsequent irrigation during
periods without rainfall

Is the process of
neutralizing acidic soil.

when the cotyledons
remain at the level where
the seed was planted and
are not carried above
ground. Such seedlings
exhibit

7. Cause litle injury to the corn

What is the effect of low
temperature on crops

In order to prevent the
breakdown of soil
aggregates due to raindrop
impact, their aggregate
stability must be improved
by

Stunted growth,Leaves turn
dark bluish green, purpling
and browning from tip
backward,Plants slow to
ripen, remaining green all
these are deficiency
symptoms of

the practice of cultivating
and planting on strips of
land that are of the same
elevation is called

Aerobic and anaerobics are
classifications of

s the total amount of water
applied through irrigation.

Among these: Disc, Chsel,
Rotary hoe and Subsoiler
one is not primary tillage
equipment

The flowers of leguminous
field crops are

does not allow easy
percolation of water and
encourages surface run

s the total amount of water
applied through irrigation.

A good seed bed should
have

In this method the irrigation
water is applied to the crop
above the ground surface in
the form of spray

refers to the spraying of the
leaves of growing plants
with suitable fertilizer
solutions

Good soil aeration
facilitates

The procedure of removing
excess emerged seedlings
is referred to as

the quantity of water,
regardless of its source,
required by a crop in a
given period for its normal
growth and development
under field conditions at a
specific place is referred to
as

Sometimes sowing is done
by scattering the seeds at
random on the field or plot.
This method of sowing is
referred to as

All cultivated plants were
domesticated from their

all these elements are
major plant nutrient: Fe, N,
P and K with the exception
of one

Can be a method of pest
control

tractors are most suitable
for small operations

All these can be
incorporated into the soil
Through Tillage: Rocks,
Organic matter, Humus and
Weeds with the exception
of

Is the equipments use to
measure temperature.

Good soil aeration
facilitates

is used for making plates in
tractor batteries

The quality of sunlight
affects

A tractor that has a track
running the full length on
both sides is

stunted growth,Loss of
green color, yellow
discoloration of leaves from
tip backward, older leaves
brown all these are
deficiency symptoms of

36. Can cause Erosion

Only
Elements have been found
to be essentials for all
plants and four others have
been found essentials for
some plant.

may be defined as a
protective covering over the
soil surface that is intended
to minimize evaporation
losses

is the method the irrigation
where by water is applied to
the crop above the ground
surface in the form of spray.

this refers to the application
of fertilizers into the soil
close to the seed or plant
and is employed when
relatively small quantities of
fertilizers are to be applied

The conventional way of
breaking up soil lumps is
through

is the effect of high wind
velocity on crops

is the effect of low
temperature on crops.

Lossens the soil and result
in a seed bed suitable fof
germination

45. Photo period refers to

Can be a method of pest
control

Grading and terracingare
done on a

Is the equipment use to
measure relative humidity.

An alkaline soil contains a
high

Calcium carbonate is used
to neutralize