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Flashcards in Maize Deck (29)
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1

What uses has maize got?

Forage for animal fed
Biogas production
Bioethical production

2

Why grow maize?

High yields
Break crop in grassland
Manures and slurry provides most nutrient needs
Drought tolerant

3

What does maize require?

Warm soil to drill
Precision drilling

4

What may a late harvest of maize cause?

Rotation problems
Contaminated silage due to wet fields
Soil compaction

5

What are early maturing varieties of maize?

Require fewer heat units to mature

6

When do you aim to harvest maize?

Early October

7

What is the ideal soil depth for maize?

2 meters

8

What do early maturing varieties of maize allow farmers to do?

Harvest earlier

9

What soil conditions are needed for maize?

PH of 6.8
Lime is necessary before drilling

10

How do you achieve a fine seed bed for maize?

Tilth

11

Why is maize deep rooted?

To access nutrients and water ideal for droughts

12

What total herbicide should be used in maize if there is a known problem with weeds?

Glyphosate

13

When should maize be sown?

April early May

14

What row spacing and width is needed for precision drilling maize?

3-5cm on 75cm spaced rows

15

What is the target seed rate for maize?

110,000 plants per ha

16

What % is a realistic expectation for maize loss?

10%

17

When is post emergence weed control used in maize?

As soon as the crop has emerged due to early weed competition

18

What pests are an issue with maize?

Wire worm
Leather jackets
Birds
Badgers
Slugs

19

What diseases are an issue with maize?

Rust fungus
Seedling rot

20

When plant flowers develop for maize?

80-95 days after sowing

21

What percentage of the crops dry matter yield is the cob?

50%

22

What percentage of dry matter should the maize be before going into the clamp?

32-35%

23

What effect does frost do to maize?

Kill the plant
Increase in dry matter
Reduce plant sugars
Mould and yeast growth

24

What kind of chop do dairy and beef cows need their maize?

Longer chop well managed clamp

25

What kind of chop do young cattle and sheep have their maize?

Short chop poorly managed clamp

26

Why do kernels need to be crushed?

Increase digest ability

27

What conditions should a well managed clamp be?

High levels of soluble carbs
Long narrow clamp
Continue rolling of clamp
Air squeezed out

28

Why are plastic bag clamps good for maize?

Earlier planting
Advances crops maturity
Earlier harvesting
Higher starch yields

29

What are disadvantages for maize plastic bag clamps?

High costs of plastics and drilling
Many varieties not suitable