Agricultural Science Questions and Answers

Thinning refers to the process of reducing the number of seedlings in a plant stand to achieve proper spacing and optimum plant density. In the context of the question, thinning involves removing one out of three seedlings of maize, resulting in two plants remaining per stand.

All the tools listed are used in soil analysis. A pH meter is used to measure the acidity or alkalinity of the soil. A sieve is used to separate and grade soil and rock particles according to their size. A hygrometer is used to measure the moisture content in the atmosphere, which can affect soil moisture levels.

Cover crops are plants that are primarily grown for the benefit of the soil rather than the crop yield. They are typically grown to suppress weeds, manage soil erosion, help build and improve soil fertility and quality, and control diseases and pests. Centrosema pubescens and Mucuna utilis are examples of cover crops. They are used to improve soil fertility and control weeds.

High humidity in a brooder house creates a conducive environment for the growth and multiplication of pests and diseases. It can also lead to the development of mould and fungi, which can be harmful to the chicks.

Cost Price (N) = 60000
Salvage value (N) = 18000
Annual depreciation (N) = 4200
Useful life (Years) = 10
The formula to calculate the total depreciation is:
Total depreciation = (Cost Price - Salvage value) / Useful life
Now, let's plug in the values:
Total depreciation = (60000 - 18000) / 10
Total depreciation = 42000 / 10
Total depreciation = 4200
Therefore, the total depreciation represented by Z in the table is N 42,000.