Alfred Ajibola
- 01st January, 2026 @ 01:26 PM
Topics in Agricultural Science
Flowers in Plants, Functions and Pollination The Leaf, Parts and Functions of the Leaf Plant Stem, Types and Functions of the Stem Parts of a Plant: Root, Types and Functions of the Root Ranching, Advantages and Disadvantages of Ranching Ley Farming, Advantages and Disadvantages Pastoral Farming: Nomadic Farming, Advantages and Disadvantages Mixed Farming, Advantages and Disadvantages Agroforestry: Taungya System of Farming, Advantages and Disadvantages Principles and Importance of Crop Rotation Multiple Cropping, Types, Advantages and Disadvantages Continuous Cropping, Advantages and Disadvantages Mixed Cropping, Types, Advantages and Disadvantages Arable Farming: Monocropping, Advantages and Disadvantages Types of Agricutural practices in Localities: Shifting Cultivation, Advantages and Disadvantages Types of Agriculture: Subsistence and Commercial Agriculture Branches of Agriculture Meaning, History and Importance of Agriculture Agricultural Science Scheme of Work for JSS1, First Term Digestive system and stomach compartment in ruminantsAcademic Questions in Agricultural Science
The ideal pH for the optimum growth of most agricultural crop is between _____.
A. 1 – 3.5
B. 4 – 5.5
C. 6 – 7.5
D. 8 – 9.5
E. 10 – 11.5
F. 12 – 13.5
People who go about their lives by raising and herding livestock such as cattle, sheep and goats are said to practice _____.
A. Pastoralism
B. Pasturalism
C. Herding
D. Herdsmen
E. Animalism
F. Anime Farming
The act of giving birth in pigs is called _____.
A. Calving
B. Piggery
C. Kidding
D. Farrowing
E. Calfing
F. Pigging
Which of the following is not a vegetable?
A. Cashew
B. Cocumber
C. Tomatoes
D. Carrot
E. Squash
F. Eggplant
All plants are crops.
A. True
B. False
In agriculture, macronutrients are essential nutrients required by plants. Which of the following is not a macronutrient?
A. Zinc
B. Sulphur
C. Calcium
D. Phosphorus
E. Potassium
F. Magnesium
Which of the following is false concerning micronutrients?
A. They are non-essential nutrients
B. They are required by plants in minute quantities
C. Iron is a micronutrient
D. Chlorine is a micronutrient
E. Copper is a micronutrient
F. Boron is a micronutrient
_____ 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
Crop rotation is defined as a the growing of different crops on the same piece of land year after year with each crop following themselves in a definite sequence or principle in order to enjoy benefits like improved soil health, pest control, nutrients management, and reduce erosion.
For crop rotation to function efficiently, specific methodologies and strategies of planting different crops on the same piece of land must be followed after each planting season. These systematic methodologies of planting different crops on the farmland are summarized under the principles of crop rotation.
The core principles of crop rotation involve strategically and consistently alternating different crops on the same farmland in order to improve overall soil health, increase crop yield, and disrupt pest and disease cycles.
The principles of crop rotation are listed below:
Please read on multiple cropping in agricultural science here.
Leguminous crops like beans and peas should be followed by non-leguminous crops like maize and wheat.
Deep rooted crop should be followed by shallow rooted crop. Please read on plant root and types of root in agriculture here.
Pest attacking the same crops should not follow each other.
Pathogens and diseases affecting the same crops should not follow each other.
Crops of the same family should not follow each other: e.g rice, maize and millet. Please read on mixed cropping in agriculture here.
Period of fallow should be included in the rotational course. Please read on bush fallowing in agriculture here.
Crops that require tillage should be planted along the sequence to manage weeds.
Crops to be planted should be suitable to the climate of the area.
Please read on continuous cropping in agriculture here.
The table below shows a four year crop rotation course:
| Year | Plot 1 | Plot 2 | Plot 3 | Plot 4 |
| 1 | Maize | Beans | Fallow | Maize |
| 2 | Beans | Maize | Yam | Fallow |
| 3 | Yam | Fallow | Maize | Beans |
| 4 | Fallow | Yam | Beans | Yam |
Please read on the various types of agricultural practices here.
It helps to increase soil fertility.
It provides a variety of food items all year round.
It helps to control erosion. Please read on the causes of soil erosion here.
It controls pests and diseases.
It controls the level of nutrient uptake.
It provides solution to the problems of land scarcity. Please read on land as a factor of production in agriculture here.
The use of leguninous crops adds nitrogen to the soil.
It helps to control weeds through the planting of crops requiring tillage. Please read on the benefits of crop rotation here.
It increases the yield of harvested crops.
It boosts biodiversity of the farm ecosystem.
Please read more explanations on crop rotation here.
Please read agricultural science jss1 topic for first term, week 7 here.
Please read on agricultural science scheme of work for jss1 first term here.
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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
Below are characteristics of gymnosperms:
Their seeds have cones that protect them.
Sepals and petals aren't present in their cones.
Stigma and style are absent.
They do not produce fruits. Only seeds are formed.
Companion cells are absent.
Sporophyll form the cones.
Anther and filament are absent.
The ovules are not present in the ovary.
Gymnosperms do not possess flowers.
Please read on the anatomical differences between gymnosperms and angiosperms here
The flower is the reproductive organ in plants' sexual reproduction. In order to achieve a successful sexual propagation or reproduction in plants, the floral parts of the flower are utilized.
The floral parts of a flower consists of the followings:
Sepals
Petals
Stamen
Carpel
The stamen is male portion of a plant. It consists of the anther and filament.
The carpel (or pistil) is the female portion of the plant. It consists of the stigma, style and ovary.
An organism will be considered a pest if it does one of the followings:
Attack crops and eat its seeds, roots, stem, leaves and flowers. Examples are locust and grasshoppers.
Cause damage to stored food, fruits or other agricultural produce. Some may even urinate or deaficate on these products. Examples are rodents, cockroaches and mice.
Attack and kill farm animals like goats, sheep and cattle. Examples are foxes, wild cats and snakes.
Act as disease vectors. A vector is an organism that carries parasite and other disease causing organisms, without being affected; but when they introduce the parasites into their host, such host becomes infected with disease. Examples of vectors are rodents and mosquitoes.
Below are the classification of crops based on their uses:
Oil crops
Vegetable crops
Latex crops
Drug and Medicinal crops
Beverage crops
Fibre crops
Fruit crops
Root and Tubers
Legumes
Spices
Cereals
All crops are plants but not all plants are crops. Below are some instances:
Weeds are considered as plants, not crops.
Parasitic plants are not necessarily crops. Examples of parasitic plants include mistletoe, corpse flower and striga.
Carnivorous or insectivorous plants are not necessarily crops. Examples are sundew, venus flytrap and pitcher plant. The image below shows a carnivorous plant (venus flytrap).
Meanwhile, always understand that all crops are plants, and they are grown for food, money or something beneficial.