Revision on Erosion, plant care and soil

Erosion and soil revision

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The washing or the wearing away of a field’s topsoil by water, and the wind is known as _______ erosion
The two main types of erosion are _________ water and wind erosion
Man causes erosion through farming activities such as __________ tillage
The washing away of topsoil by water is known as __________ water erosion.
The carrying away of topsoil by wind is known as __________ wind erosion.
Agents of erosion or things that cause erosion include ________ water, wind, man, and animals.

Soil erosion decreases soil fertility, which can negatively affect crop yields.
It also sends soil-laden water downstream, which can create heavy layers of sediment that prevent streams and rivers from flowing smoothly
It can eventually lead to flooding.
Once soil erosion occurs, it is more likely to happen again if not prevented

Plant Protection

Unwanted plants or any plant growing where it is not wanted is called___ weeds
When plants dry off as a result of lack of water in the soil it is known as ____________ wilting
The provision of a cover over crops to reduce transpiration is known as ______ shading
The covering of the topsoil by grass or undecomposed materials such as straw, hay, under plants to prevent loss of water and growth of weeds is known as ________ mulching.

Some advantages of mulching are:

It reduces water loss from the soil surface, which helps maintain soil moisture.
Moderates soil temperatures, keeping it warmer on cold nights and cooler on hot days.
Protects bare soil and reduces erosion and soil compaction.
In orchards, mulching materials are most often applied ____ under trees to maintain their growth and stability.

The careful removal of some crop plants to avoid overcrowding and give room for the growth of others is known as __________ thinning
The providing of stakes for climbing stems like yams is known as ______________ staking.
Horticultural techniques used to join parts from two or more plants so that they appear to grow as a single plant are called ______ Grafting and budding.
The technique where the upper part (scion) of one plant grows on the root system (rootstock) of another plant is known as ________ Grafting
The process where a bud is taken from one plant and grown on another is known as_________ budding

SOIL

The loose top layer of the earth’s surface on which plants grow is known as ________ soil
Soil is formed in the process of breaking down rocks known as ________weathering
In the process of weathering, The bedrock breaks down into pieces due to the effects of _______ heat, cold, water, wind, and rain.
The agents of weathering are_______ temperature, wind, rain, plants, and animals.
Things that compost or make up the soil are _______ minerals, organic matter, water, and air
The four components of soil in their proportion are _______ mineral matter 45%, organic matter 5%, air 25%, and water 25%.
a vertical cross-section of the soil (from top to bottom is known as _____ A soil profile
The various layers of soil are also called ______ soil horizons
Each horizon of soil may be different from the other horizons in ____ physical or chemical ways.
There are four types of soil namely_________ loam soil, sandy soil, clay soil, and humus soil.
Humus soil is also referred to as ___ Manure
The best soil for agriculture is _________ loam soil
The most fertile soil is _________ Humus soil
Fertile soil carried by rainwater to the banks of rivers is called _____ alluvial soil
A thick heavy soil that water hardly penetrates is called ___ clay soil.
A type of loose light soil that is permeable by water is known as __________________ sandy soil.

Erosion and soil revision

Read our General Knowledge Revision e-book.

Erosion and soil

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