Unit notes and practice questions
Everything here is for unit 2 of the Grade 11 Agriculture textbook: what the chapter covers, the short notes, practice questions with their answers, and the lesson video where one exists.
The cards filed under this chapter on the Grade 11 Agriculture page. Open one at a time.
When you use it
Use when answering post harvest management questions on maize grain storage.
Watch out
Maize harvested at 25% moisture cannot be stored directly. It must be dried to 13% moisture or lower to prevent spoilage.
Drafted from Grade 11 Agriculture, pages 19-35, then checked twice before it went up
| Cereal Crop | Origin | Altitude Range | National Yield | Spacing |
|---|---|---|---|---|
| Teff | Ethiopia | |||
| Maize | Central America | |||
| Wheat | Asia | |||
| Barley | Middle East | |||
| Sorghum | Africa |
When you use it
Use when comparing agronomic requirements, origins, planting spacing, and national yield averages of Ethiopian cereal crops.
Watch out
Maize has the highest national yield per hectare, but teff ranks first in total cultivated area in Ethiopia.
Drafted from Grade 11 Agriculture, pages 19-35, then checked twice before it went up
When you use it
Use when determining fertilizer recommendations for barley grown for malting rather than human food.
Watch out
Do not apply the standard food barley nitrogen rate of 60 kg per hectare. High nitrogen levels reduce malt quality.
Drafted from Grade 11 Agriculture, pages 19-35, then checked twice before it went up
When you use it
Use when describing field preparation and planting techniques specific to teff.
Watch out
Teff has tiny seeds and poor early weed competition. Cultivate 4 to 5 times and roll animals across to eliminate large clods before sowing.
Drafted from Grade 11 Agriculture, pages 19-35, then checked twice before it went up
10 multiple-choice questions written against this chapter, each with its answer and the reason. Try one before you open the answer.
Question 1
Which cereal crop ranks first in terms of the total area of production in Ethiopia?
Answer: B Teff
Why
According to the textbook, teff ranks first in terms of the area of production in Ethiopia, while maize ranks second.
Question 2
Why is sorghum commonly referred to as ‘the camel crop’?
Answer: A It can remain dormant during dry periods and resume growth when moisture is available
Why
Sorghum is called 'the camel crop' because it has the capacity to stay dormant during dry periods and start growing again as soon as there is sufficient soil moisture.
Question 3
What is the botanical difference between cereal crops and pulse crops during seedling emergence?
Answer: A Cereals are monocots producing a single leaf, while pulses are dicots with two cotyledons
Why
Cereal crops are monocots whose seeds have a single cotyledon (producing a single leaf at emergence), whereas pulse crops are dicots containing two cotyledons.
Question 4
Which of the following pulse crops is specifically identified as an important export crop in Ethiopia?
Answer: C Haricot bean
Why
The textbook explicitly highlights haricot bean (common bean) as an important export crop in Ethiopia.
Question 5
Why does teff require 4 to 5 cultivations and a very smooth seedbed compared to other cereal crops?
Answer: B Teff has a much smaller grain size than most cereals
Why
Because teff grains are very small, the soil must be cultivated 4 to 5 times and leveled without large clods so the tiny seeds make good contact with the soil.
Question 6
What visual indicator shows that a maize plant is fully mature and ready for harvest?
Answer: B The seeds develop a black layer at the bottom tip
Why
Maize is ready for harvest when the grains form a distinct black layer at the bottom tip.
Question 7
Why must the application rate of nitrogen fertilizer be reduced when producing barley for malting?
Answer: B High nitrogen levels reduce the quality of the malt
Why
For barley used in malting, the nitrogen rate must be lowered because high nitrogen application decreases malt quality.
Question 8
Which parasitic weed is known to cause massive yield losses in sorghum fields in Ethiopia?
Answer: A Striga
Why
Striga is a parasitic weed that severely affects sorghum production and causes huge yield losses unless managed with hand weeding, crop rotation, and resistant varieties.
Question 9
According to the textbook, what is the average national yield of maize in Ethiopia?
Answer: D 32.5 quintals (3.25 t) per hectare
Why
The textbook states that the average national yield of maize is 32.5 quintals (3.25 tonnes) per hectare, which is the highest per-unit yield among Ethiopian cereals.
Question 10
Which pair of crops both grow suitably at an altitude range of 1800 to 3000 meters above sea level in Ethiopia?
Answer: A Wheat and faba bean
Why
Both wheat and faba bean grow best at highland altitudes ranging between 1800 and 3000 meters above sea level.
The app holds 12 questions on this unit, marked as you go. These are the first 10.
Unit 2 runs from page 19 to page 35 of the Ministry of Education edition.
Ministry of Education edition, English, 270 pages
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