ICAR AICE-JRF/SRF (PhD) — Subject 59 Forestry · India · National Testing Agency for ICAR
Original practice questions written to the published syllabus · not past papersMaking agroforestry work: tree-crop interactions above and below ground, management of trees on farms, productivity, and the economics of agroforestry systems.
In the exams: ICAR AICE-JRF 59 Unit 6 and Unit 9 (economic evaluation of agroforestry, land equivalent ratio) and Unit 12 (carbon sequestration)
How our questions for ICAR AICE-JRF/SRF spread across the units of Agroforestry Management, Interactions & Economics. Difficulty: 8 easy, 34 medium, 28 hard.
| Economic evaluation: cost-benefit analysis of agroforestry | 10 | |
| Tree-crop interactions: complementarity, supplementarity, competition | 9 | |
| Nutrient cycling and soil improvement by trees | 9 | |
| Productivity and land equivalent ratio | 9 | |
| Carbon sequestration in agroforestry | 8 | |
| Adoption of agroforestry by farmers | 7 | |
| Light, water and nutrient competition | 6 | |
| Allelopathy and its management | 6 | |
| Tree management on farms: pruning, pollarding, root pruning | 3 | |
| Markets and value chains for farm-grown wood | 3 |
Choose an answer, then open the working. Each explanation says why the right answer is right and why the others are not.
Measuring crop yield at increasing distances from a tree row is called a:
C. Transect or line-source study
Yield gradients quantify interaction zones.
Light reaching a crop under trees is usually expressed as:
B. Percent of incident PAR transmitted
Measured with quantum or line sensors.
The 'safety-net' role of tree roots refers to:
B. Catching nutrients leaching below crops
Deep roots intercept leaching nutrients.
Much nitrogen fixed by agroforestry trees reaches crops only when:
B. Prunings, litter or roots decompose
Release depends on decomposition.
A biomass expansion factor (BEF) converts stem biomass to:
C. Total above-ground biomass
Adds branches and foliage.
Net returns of 45,000 per year for 6 years at 10% (annuity factor 4.3553) have a present value of about:
D. 196,000
45,000 x 4.3553 = 195,987. 270,000 ignores discounting.
An NPV of 100,000 over 6 years at 10% corresponds to an equivalent annual value of about:
D. 22,960
EAV = 100,000 x 0.1 / (1 - 1.1^-6) = 22,960. 16,670 just divides by 6.
Recalculating NPV for different timber prices and yields is called:
A. Sensitivity analysis
Tests how results depend on assumptions.
Pruning farm trees can raise the price received for their wood mainly by:
D. Reducing knots in the timber
Clear timber grades higher.
Programmes that report seedlings distributed rather than surviving trees risk:
C. Overstating sustained adoption
Uptake during a project differs from continued practice.
Ten here, 70 in the app. The Laisha app has every practice question we have written to ICAR AICE-JRF/SRF in this subject, marked as you go, with timed papers, a jump-to-unanswered list and a certificate when you pass at 70 per cent.
Free for ten days, then one subscription of US$10 a month. We would rather say so here than have you find it later.
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