MCQ
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What is the grain harvest index?
B) The ratio of grain yield to the total plant yield
Which cereal crop typically produces the highest grain yield potential?
C) Winter wheaT
What are the three main yield components in cereal crops?
Ears/m², grains/ear, grain weight
What is the optimal Leaf Area Index (LAI) for cereal crops?
4-5
According to the document, which factor contributes to high hectolitre weight in cereals?
Low moisture content and high grain density
What does the Hagberg Falling Number test measure?
Alpha-amylase activity in wheat
Which cereal has the lowest typical hectolitre weight?
Oats
What is the recommended maximum moisture content for safe storage of grain?
16%
What are the general quality criteria for grains?
Sweet and sound, absence of impurities, well-filled grains, acceptable moisture content
Why is breadmaking wheat challenging to produce in Ireland?
Breadmaking varieties yield less and require specific conditions
What percentage of the total yield in cereal crops is typically grain?
Over 50%
Which year experienced high costs due to wet conditions and reduced yields in Ireland?
2012
What is the grain harvest index?
Ratio of grain yield to biological yield
Which cereal growth phase results from photosynthesis and requires light interception?
Vegetative growth
What is the yield difference between winter-sown and spring-sown cereals?
20-25%
Which cereal crop typically has the smallest ear size?
Barley
• What are the three yield components in cereal crops?
Ears/m², grains/ear, grain weight
• What is the target number of ears/m² for winter wheat?
500
What management practice is crucial in achieving target ear numbers in cereal crops?
Spring nitrogen application
Which cereal crop has the highest grains/ear?
Winter Oats
What is the maximum moisture content allowed for safe storage of grain?
16%
What is one parameter used to assess grain quality?
Hectolitre weight
What is the minimum Hagberg Falling Number (HFN) required for breadmaking wheat?
220
Which cereal has the lowest typical hectolitre weight?
Oats