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ICAR AIEEA-PG Plantation Forestry & Short-Rotation Crops: practice questions

ICAR AIEEA-PG — Forestry/Agroforestry & Silviculture (Major Subject Group 09) · India · National Testing Agency for ICAR

Original practice questions written to the published syllabus · not past papers
10worked here, free
21written to this exam in this subject
10syllabus units

About ICAR AIEEA-PG

ICAR AIEEA-PG — Forestry/Agroforestry & Silviculture (Major Subject Group 09) is a postgraduate admission exam run by National Testing Agency for ICAR, for candidates in India. Computer-based, 120 minutes, 120 MCQs, +4 / −1, English only. One paper for the whole subject group.

Source: icar.org.in.

Checked against the exam body's published information. Formats and fees change; confirm the current edition there before you book.

Plantation Forestry & Short-Rotation Crops in ICAR AIEEA-PG

Growing planted forests for wood, fibre and energy: species choice, intensive establishment and management, productivity, short-rotation coppice and the social and environmental issues of plantations.

Our 21 ICAR AIEEA-PG questions in this subject: 0 easy, 21 medium, 0 hard, across 10 units.

10 practice questions, worked

Choose an answer, then open the working. Each explanation says why the right answer is right and why the others are not.

These 10 were written to ICAR AIEEA-PG and are not shown on any other exam's page.

Question 1 · medium

Why did countries such as New Zealand, Chile and South Africa build their plantation estates on exotic species?

  1. Their laws prohibited the planting of any native tree species on public land
  2. They had few fast-growing native softwoods suited to industrial production
  3. Exotic species need no site preparation, fertiliser or weed control
  4. Native species there could not be raised in nurseries from seed or cuttings
Answer and working

B. They had few fast-growing native softwoods suited to industrial production

These southern-hemisphere countries had few productive native softwoods, so they turned to radiata pine, other pines and eucalypts, which grew very fast and had been domesticated. Exotics still need intensive establishment, and no blanket legal ban on natives drove the choice.

Question 2 · medium

What does strong genotype by environment interaction among plantation clones imply for deployment?

  1. The ranking of clones is the same everywhere, so one well-run trial can serve a whole region
  2. Clones must be tested on several representative sites before being matched to site types
  3. Environment has no effect on clone growth once the clone is selected
  4. Clones should usually be deployed only on the site where the parent tree was first found
Answer and working

B. Clones must be tested on several representative sites before being matched to site types

G × E interaction means clone rankings change between environments, so clones are tested on several representative sites and matched to site types. It does not restrict a clone to its origin site.

Question 3 · medium

On a poorly drained site, which preparation gives seedlings an aerated rooting zone?

  1. Planting in deep pits that collect surface water around the seedling
  2. Burning the site repeatedly to dry out the subsoil
  3. Mounding or bedding to raise the planting position above the water table
  4. Planting cuttings horizontally below the water table
Answer and working

C. Mounding or bedding to raise the planting position above the water table

Mounds or beds lift the root zone above waterlogged soil. Pits on a wet site fill with water and drown roots; burning does not lower the water table.

Question 4 · medium

A clonal eucalypt plantation has MAI 30 m³/ha/yr, basic density 0.50 t/m³ and kraft pulp yield 52%. How much pulp does each hectare produce per year?

  1. 15.6 t
  2. 15.0 t
  3. 7.8 t
  4. 3.9 t
Answer and working

C. 7.8 t

Dry wood = 30 × 0.50 = 15 t/ha/yr; pulp = 15 × 0.52 = 7.8 t. 15.6 skips the density step; 15.0 is dry wood, not pulp.

Question 5 · medium

A radiata pine stand planted at 1,000 stems/ha is thinned to a final stocking of 300 stems/ha. What percentage of stems is removed?

  1. 30%
  2. 43%
  3. 233%
  4. 70%
Answer and working

D. 70%

Removed = 1,000 − 300 = 700; 700 ÷ 1,000 = 70%. 30% is the share retained; 233% is 700 ÷ 300.

Question 6 · medium

The woodwasp Sirex noctilio has killed many plantation pines in the southern hemisphere. How is it controlled?

  1. By aerial spraying of fungicide over whole estates
  2. By planting only spruce, which it cannot enter
  3. By burning every attacked tree immediately
  4. Biologically, with a parasitic nematode and parasitoid wasps
Answer and working

D. Biologically, with a parasitic nematode and parasitoid wasps

Sirex, introduced from Europe, is controlled mainly by the nematode Deladenus siricidicola, which sterilises females, and by parasitoid wasps, together with thinning to keep trees vigorous.

Question 7 · medium

According to global catchment studies, where are the absolute and proportional streamflow reductions after afforestation largest?

  1. Both are largest in deserts receiving under 100 mm of rainfall a year
  2. Absolute reductions are largest in dry areas; proportional ones in wet areas
  3. Neither varies with rainfall, only with the species planted
  4. Absolute cuts are largest in wet areas; proportional cuts in dry areas
Answer and working

D. Absolute cuts are largest in wet areas; proportional cuts in dry areas

Wet catchments lose the most millimetres; dry catchments lose the largest share of a small flow and can dry up completely.

Question 8 · medium

Which harvest system exports the most nutrients from a plantation site per rotation?

  1. Long-rotation, stem-only harvest with debarking on site
  2. Selective felling of a few large stems every 30 years
  3. No harvest at all, leaving the stand to grow
  4. Short-rotation, whole-tree harvest
Answer and working

D. Short-rotation, whole-tree harvest

Foliage, twigs and bark are richest in nutrients, and short rotations harvest a larger share of young, nutrient-rich tissue more often; stem-only, long-rotation harvests export least.

Question 9 · medium

Which package is typically provided by the company in an outgrower scheme?

  1. Improved seedlings or clones, technical advice, credit or advances, and a buy-back agreement
  2. Free land title, government salaries and guaranteed crop insurance for food crops
  3. Only a one-off grant with no link to wood purchase
  4. Harvesting rights in natural forest in place of planting
Answer and working

A. Improved seedlings or clones, technical advice, credit or advances, and a buy-back agreement

Typical inputs are planting stock (often subsidised), extension advice, credit or advance payments and a commitment to buy the wood at a floor or market price at harvest.

Question 10 · medium

A farmer sells 150 t of pulpwood at 40 currency units per tonne after a 6-year rotation. Establishment and management costs, without interest, totalled 2,500 currency units. What is the undiscounted net return per year of rotation?

  1. 1000 currency units
  2. 583 currency units
  3. 3500 currency units
  4. 1417 currency units
Answer and working

B. 583 currency units

Revenue = 150 × 40 = 6,000; net = 6,000 − 2,500 = 3,500; per year = 3,500 ÷ 6 = 583. 1000 ignores costs; 3500 is the net for the whole rotation.

A study plan for Plantation Forestry & Short-Rotation Crops in ICAR AIEEA-PG

This plan follows where our questions actually fall, so the time goes where the marks are likely to be. It is our reading of the syllabus, not the exam body's weighting.

  1. First, the heavy units (43% of the 21 questions): Spacing, rotation and productivity (mean annual increment) (3, 14%); Bamboo plantations (2, 10%); Intensive site preparation, fertilisation and weed control (2, 10%); Outgrower and contract-farming schemes (2, 10%).

    Read the manual chapters for these first and do every worked question you can find on them.

  2. Then the middle band: Plantation health and monoculture risks (2, 10%); Plantations and water, soils and biodiversity (2, 10%); Planted forests worldwide: extent and roles (2, 10%); Pulpwood, sawlog and veneer regimes (2, 10%).

    Aim for one sitting per unit, then mixed questions across them.

  3. Then the lighter units: Short-rotation coppice and energy plantations (2, 10%); Species and clone choice for industrial plantations (2, 10%).

    Learn the definitions, classifications and standard numbers; these units are more often recalled than worked.

  4. Finish timed. Sit the subject as a timed set without notes, mark it, and send each wrong answer back to its unit above.

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