Topics in Agricultural ScienceTypes of agricultural practices Crop rotation explained Benefits of crop rotation Differences between subsistence and commercial farming Subsistence farming explained with its characteristics What is commercial farming? Types of commercial farming Characteristics of commercial farming Importance of forest: Forest reserves in Nigeria Wildlife reserves in Nigeria and its importance Prevention and Control of Crop Pests Economic Importance of Crop Pests Classification of Insect Pests and their Economic Importance Agricultural machines and their uses Causes of soil erosion Ways to prevent soil erosion Asexual Propagation in Plants, Types and Examples Differences between gymnosperms and angiosperms Scheme of Work, Agricultural Science, SS1, First Term Scheme of Work, Agricultural Science, SS1, Second Term Scheme of Work, Agricultural Science, SS1, Third Term
Academic Questions in Agricultural Science
_____ is a term that describes the biological, chemical and cultural control tactics employed to make pest management economical, environmentally friendly and socially acceptable.
A. Integrated Pest Management
B. Integral Pest Management
C. International Pest Management
D. Inclusive Pest Management
E. Imbibed Pest Management
F. Inclusion Pest Management
Cordage is made from _____ crop.
F. Vegetables and Spice
_____ is defined as the solid and arable part of the earth where agricultural activities are be carried out.
C. Agricultural land
E. Open land
F. Planting and grazing land
Gymnosperms and angiosperms are seed bearing plants under the division spermatophyta?
Which of the following is false concerning gymnosperms?
A. Cones are present
B. Sepals are present
C. Petals are absent
D. Only seeds are produced
E. Sporophyll form the cones
F. In seed formation, the ovules aren't present in the ovary
Which of the following statement is incorrect concerning seeds?
A. The ovary develops into the seed after fertilization
B. The embryo in the seed develops into a young plant
C. The seed's endosperm serve as a source of food reserve for the developing embryo
D. A seed has its own genotype
E. Seeds are products of sexual reproduction
F. Apomictic seeds aren't produced sexually and the hawkseed is an example
The _____ is the reproductive organ in plant's sexual reproduction.
A. Pollen grain
In flowering plants, fertilization occurs when the _____ comes into contact with the ova (as genetic materials are eventually exchanged).
F. Pollen grain
Crop rotation refers to the planting of different crops on the same plot of land, and in a sequential manner for a minimum period of two years.
Benefits of crop rotation may also be considered as the importance, advantages or functions of crop rotation. They include the following:
Crop rotation is a simple and natural way of increasing the quality and quantity of harvested crops. It does this by presenting an excellent planting environment.
Please read on the types of agricultural land and their uses here.
It decrease soil and atmospheric pollution by reducing the use of fertilizers on the soil.
Crop rotation disrupts the life cycle of plant pest, thus reducing their population. Plant diseases are consequently reduced through this process.
Please read on pest of agricultural importance here.
It improves soil structure, soil nutrients and soil fertility by the addition of nitrogen and other valuables molecules into the soil.
It reduces soil erosion by enhancing soil structure.
Please read on the causes of soil erosion here.
It reduces the growth of weeds by creating a constantly changing environment for unwanted plants.
Please read on the differences between plants and crops here.
Since expensive agrochemicals aren't needed, crop rotation therefore reduces the cost of cultivating crops.
You can read on scale of preference and opportunity cost here.
Crop rotation is a recommended planting strategy by the Food and Agriculture Organization (FAO) through its Integrated Pest Management (IPM) methods of reducing the use of agrochemicals like herbicides and pesticides. This pattern of planting therefore creates a heathy ecosystem and socially friendly environment for humans, plants, domestic animals and wildlife.
Please read on wildlife reserve in Nigeria and its importance here.
By improving the soil structure, crop rotation simultaneously enhances the water retention capacity of the soil, and this is highly beneficial to crops.
Please read on the prevention of soil erosion here.
When cover crops like alfalfa, peas, lentils and pasture grasses are grown as a part of crop rotation, they end up providing green manure to the soil.
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Amazing facts in Agricultural Science
Cows technically have one stomach, not four. However, a cow's stomach has four compartments. These are: rumen, reticulum, omasum and abomasum
Peanuts are legumes and not nuts
Although plants neither see nor hear, they can recognize their siblings and even give them preferential treatments
Squirrels do plant more trees (through their actions) than an average human in their lifetime. They often hide their acorns and nuts underground and forget about them
Cows have got the ability to walk up stairs, but not down stairs
A group of cows is called a team, drove or herd.
People just prefer to call them herd
NOTABLE POINTS IN Agricultural Science
Secateurs are agricultural tools.
Secateurs are also referred to as pruning shears or hand pruners.
It looks like a pair of scissors.
It’s used for trimming flowers and leaves.
It is also used for pruning the branches of shrubs.
An example of an agricultural tool is the hoe. It is shown below:
We have a variety of hoes.
They are generally used for tilling the soil.
They are used for making trenches in farmlands.
A hoe is utilized in harvesting crops like yam and cocoyam
They are also used for cutting weeds on farmlands.
Pisciculture, fish farming or fish rearing is a great business to begin as an entrepreneur.
Below are some reasons why one should embark on fish farming:
There is always a great demand for fish in the market.
You don't need a degree or qualification.
It is a profitable business if done right.
You are your own boss.
You can always get a fish specie that grows fast; and with a high marketability ratio.
Water is very cheap.
You can do it yourself if you abide by the fish farming rules.
Below are some agricultural terms and their meanings:
Agriculture: Agriculture is defined as a science that deals with plant and animal farming; including the cultivation of the soil for the purpose of growing crops and rearing animals to provide food for man, raw materials for industries and other useful resources; for example, oxygen.
Agricultural Extension: These are cooperative bodies that work with the federal and state agencies to carry out research and education for rural and urban producer and consumer groups. Agricultural extension is achieved through the cooperative's specialist personnel for each area of the state or country.
Agronomy: This is defined as the science of crop production and soil management.
Alfalfa: A leguminous crop used for forage or hay in livestock farming.
Algicides: These are pesticide used for controlling and killing algae. Algae are usually present in lakes, canals, damp walls, swimming pools, water tanks and other water related bodies.
Below are some common types of erosion:
Water Erosion: It is caused by rainfall and flooding on the topsoil. As a result of water erosion, some layers of the topsoil are lost.
Sheet Erosion: When an entire surface of land becomes eroded at a uniform (equal) level, such is referred to as sheet erosion. It is shown below:
Wind Erosion: It results from the actions of wind on a bare land. Wind erosion is often seen in deserts. Overgrazing and lack of vegetation cover will also enhance wind erosion on topsoil.