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RRG611S - RANGELAND REGENERATION - 1ST OPP - JUNE 2024 |
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nAmlBIA UnlVERSITY
OF SCIEOCEAno TECHn0L0GY
FACULTY OF HEALTH, NATURAL RESOURCES AND APPLIED SCIENCES
SCHOOL OF AGRICULTURE AND NATURAL RESOURCES SCIENCES
DEPARTMENT OF AGRICULTURAL SCIENCE AND AGRIBUSINESS
QUALIFICATIONS: BACHELOR OF SCIENCE IN AGRICULTURE
QUALIFICATIONS CODE: 07BAGA LEVEL: 7
COURSE CODE: RRG611S
DATE:
JUNE 2024
COURSE NAME: RANGELAND REGENARATION
PAPER: THEORY
DURATION: 3 HOURS
MARKS: 100
EXAMINER:
MODERATOR:
FIRST OPPORTUNITY EXAMINATION QUESTION PAPER
DR. JEROME BOYS
DR. HILMA RANTILLAAMWELE
INSTRUCTIONS
1. Answer all questions.
2. Please write neatly and legibly.
3. Do not use the left side margin of the exam paper. This must be allowed for the examiner.
4. No books, notes and other additional aids are allowed.
5. Mark all answers clearly with their respective question numbers.
PERMISSIBLE MATERIALS:
1. None-programmable calculator
IATTACHMENTS
1. None
THIS MARKING SCHEME CONSISTS OF 3 PAGES
(Including This Front Page)
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QUESTION 1
Define the following:
1.1.
Bush thickening
(2)
1.2.
Biome
(2)
1.3.
Vegetation type
(2)
1.4.
Continuous grazing
(2)
1.5.
Large Stock Unit (LSU)
(3)
1.6.
Stocking rate
(2)
1.7.
Rangeland
(2)
[15]
QUESTION2
2.1. Differentiate between "Grazing Capacity" and "Carrying Capacity"
(4)
2.2. Name two (2) commonly used units in which "Grazing Capacity" and/or "Carrying
Capacity" is expressed
(2)
2.3. If a camp has a Carrying Capacity of 40 kg Animal Biomass/ ha and it burned
completely down. What would be its Carrying Capacity and Grazing Capacity at that
point in time?
(4)
[10]
QUESTION3
3.1. Name five (5) conservation requirements of good pasture plants?
(5)
3.2. Name any five (5) signs of veld deterioration in Namibia
(5)
3.3. Name any five (5) sound principles of rangeland management
(5)
3.4. Name any five (5) rotational grazing systems
(5)
[20]
QUESTION4
4.1. Discuss five (5) factors leading to the increase in undesirable plants. (15)
4.2. Discuss the benefits of veld in good condition as opposed to veld in poor condition
in the same rainfall area with special emphasise on:
(10)
• Dry material (DM) production
• Root depth
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• Supplementation
• Drought risk
• Root mass and storage of growth reserves
[25]
QUESTION 5
5.1. Discuss the factors influencing the number and sizes of camps in a livestock
farming production system.
(15)
QUESTION 6
A farmer decided to determine the grazing capacity in a camp on his/her farm. The
farmer clipped 40 (1m2) quad rates with a yield of 25 kg of grass after it was dried in an
oven.
6.1. Convert the clipped grass biomass to kg/ha
(3)
6.2. Calculate grazing capacity in kg Animal Biomass/ ha/ year, using a 50% utilization
factor.
(4)
6.3. The camp is 80 ha and the farmer is planning to stock the camp with 1500 ewes
with an average mass of 55kg for 240 days. How will you advice this farmer and should
he/she go ahead with the plan?
(5)
6.4. What will be the correct stocking density of the 80-ha camp for a planned period of
240 days?
(3)
[15]
END OF QUESTION PAPER
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