AGR203

An acidic soil contains a
high

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

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

4. Tillage facilitated all exept

when the seeds are
germinated at temperatures
slightly above freezing
before they are sown. This
process is called

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

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

cereal crops such as maize,
sorghum and millet are
planted with a definite inter
and intra row spacing to
achieve a precise plant
density. This method is
called

When a living seed fails to
germinate even when
provided with the normal
conditions necessary for
germination, such a seed is
said to be

Can be a method of pest
control

The conventional way of
breaking up soil lumps is
through

Can be a method of pest
control

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

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

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

16. Cause litle injury to the corn

All
Benefits from improved soil
earation

oxidation after tillage
facilitates
__Of nutrients

An oxidised nutrient
becomes

is the effect of high wind
velocity on crops

the practice where crop
production is carried out
with as little tillage or soil
disturbance as possible is
known as

An acidic soil contains a
high

What is the effect of low
temperature on crops

tractors do not usually have
adjustable tread of
adequate clearance for row
crop operations

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

the addition of any calcium
or calcium and magnesiumcontaining compound to the
soil for reducing acidity is
called

tractors can be referred to
as general purpose
machines

The quality of sunlight
affects

Good soil aeration
facilitates

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.

Is the process of
neutralizing acidic soil.

the most common tillage
implement among small
scale farmers is

is the effect of low
temperature on crops.

Calcium carbonate is used
to neutralize

Does not cause disease in
plants

Aerobic and anaerobics are
classifications of

the process of neutralizing
acidic soil is referred to as

seeds of many plants
require moist chilling
conditions for a period of
time to render them
capable of germination.
This process is called

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

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

tractors are most suitable
for small operations

the amount of irrigation
water required to bring the
soil moisture level in the
effective root zone to field
capacity is called

Grading and terracingare
done on a

45. Is not a micro nutrient

46. Is refer to Precipitation.

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

What is the effect of high
wind velocity on crops

the most ancient and most
universal forms of tillage is

The flowers of leguminous
field crops are