Neco 2024 Agricultural Science Question 1

Practice practical question 1 from the 2024 Neco Agricultural Science examination. This question covers Agricultural Ecology .

Neco 2024 Agricultural Science Practical

Topic: Agricultural Ecology

Question 1 NECO • 2024 • AGRICULTURAL_SCIENCE • practical

A farmer wants to assess the soil moisture status of a maize field. Using a soil core sampler of known volume (500 cm³), a soil sample is taken from the 0–15 cm depth. The wet weight of the sample is recorded as 820 g. After oven‑drying at 105 °C for 24 h, the dry weight is 680 g. The bulk density of the field soil is 1.3 g cm⁻³. The optimum volumetric water content for maize at this growth stage is 30–35 %.

Question Parts

( a )

Calculate the gravimetric water content (percentage) of the soil sample.

( b )

Convert the gravimetric water content obtained in (a) to volumetric water content. Use the relationship \(\theta_v = \theta_g \times \frac{\rho_b}{\rho_w}\) where \(\rho_w = 1.0\) g cm⁻³.

( c )

State whether the moisture status of the field is deficient, adequate or excessive for the maize crop and give a brief justification.

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About This Question

This is Neco 2024 Agricultural Science Question 1. It is one of the practical questions from the 2024 Neco Agricultural Science examination.

The question covers Agricultural Ecology .

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