Gce Model Questions Vol1 2025 Agricultural Science Question 2
Practice objective / multiple choice question 2 from the 2025 Gce Model Questions Vol1 Agricultural Science examination.
A 50‑ha pine plantation is stocked at 800 trees ha^{-1}. Each tree has an initial DBH of 25 cm and a height of 20 m. The mean annual increment in timber volume is 2.5 m³ ha^{-1} yr^{-1}. The rotation age is 30 yr. After final harvest, at least 15 % of the original basal area must remain on site to protect the soil. The volume of an individual tree can be estimated by V = 0.00005·DBH^{2}·height (with DBH in cm and height in m). Determine the total volume of timber (in m³, rounded to the nearest whole number) that can be sustainably harvested from the whole plantation at the end of the rotation.
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This is Gce Model Questions Vol1 2025 Agricultural Science Question 2. It is one of the objective questions from the 2025 Gce Model Questions Vol1 Agricultural Science examination.
Difficulty level: Hard .
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