Agricultural Science 2023 Jamb Examination

A scythe is a traditional hand tool used in agriculture for cutting grass, cereals, or other crops.
It consists of a long curved blade attached to a handle and requires manual operation, unlike harrows, plows, or seeders which serve different purposes.

Soil properties in agriculture encompass a wide range of factors including pH, organic matter content, water-holding capacity, drainage, cation exchange capacity, soil depth, texture, structure, and fertility.
Understanding all these properties is critical for optimal crop production and soil management.

Promoting biodiversity conservation, while important for the environment, is not considered a core principle of agronomy.
Agronomy primarily focuses on soil management, crop production, pest control, and maximizing crop yield for sustainable agriculture.

Agricultural development programs aim to enhance sustainable agricultural practices, ensuring long-term productivity, environmental protection, and efficient use of resources.
This approach supports food security and farmer livelihoods rather than focusing solely on profit or land expansion.

Agronomy is the science and practice of crop production and soil management.
It involves studying soil properties, crop cultivation techniques, and the sustainable use of land for maximizing agricultural output.

Animal husbandry, which involves breeding and raising livestock, is not a component of agronomy.
Agronomy focuses on crop production, soil management, and pest control rather than animal management.

Irrigation is considered an agricultural technology because it involves the application of engineered systems and methods to supply water to crops.
It enhances crop growth efficiency, whereas practices like crop rotation, organic farming, and composting are traditional methods or management practices.

Fungi do not act as agents of pollination.
Pollination is primarily facilitated by biotic agents like bees and abiotic agents like wind and water. Fungi serve other ecological roles such as decomposition and symbiosis.

Crop pests are living organisms and therefore constitute a biotic factor in an agricultural ecosystem.
Biotic factors include all living components such as plants, animals, bacteria, and pests, while rainfall, soil pH, and temperature are abiotic factors.

Soil fertility is influenced by a combination of factors including pH, soil structure, organic matter content, nutrient availability, soil texture, and drainage.
All these elements work together to determine how productive the soil is for crop growth.