Lecture 3- Crop Rotation Flashcards Preview

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Flashcards in Lecture 3- Crop Rotation Deck (24)
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1

Why are rotations important?

So that soil stays fertile and healthy

2

What are their purpose?
4 answers

Spread out work load of machinery and labour
Interrupt weeds, pest and disease cycles
Aids cash flow
Improves soil structure

3

What are break crops?

Secondary crop grown to interrupt the repeated sowing of cereal crops

4

What crops fall under the POACEAE plant family?

Cereal crops and herbage grasses

5

What crop falls under the FABACEAE plant family?

Legumes

6

What crop falls under the SOLANACEAE plant family?

Potatoes

7

What does continuous cropping of cereals lead to?

Take-all, eyespot and nematodes

8

What does continuous cropping of root crops lead to?

Eelworm problems

9

What are examples of pulse crops?

Peas and beans

10

What are pulse crops functions?

How does it do that?

Natural restoration of nitrogen

Via bacteria fixation in root nodules

11

What three types of crops should not be grown 5years consecutively in the same field?

Oilseed rape
Pulses
Sugar beet

12

What are restorative crops?
How do they do this?
What are examples of this?

Crops that restore and maintain fertility in soils
Allow return of organic matter and nutrients to the soil
Grass leys, kale

13

How many hectares in the uk are used for arable land?

4.5 million

14

How many hectares in the uk are used for grasslands?

11.5 million hectares

15

What is a break crop?

A different species of crop to the main crop

16

What's an example of break crop?

Legumes
Oilseed rape

17

Why are break crops important even for just a year.

Decreases susceptibility of diseases within the soil

18

What do rotations not deter?

Diseases spread by airborne spores and pests which spread to field to field

19

What disease is hindered by rotations?

Take all

20

What pests are hindered by rotations?

Nematodes

21

What disease does rotating winter and spring crops deter?

Black grass

22

What does a successful crop rotation do?

Maintains economic efficiency
AVoids nutrient leaching
Ensure pesticides hit their targets

23

What is Harper Adams crop rotation?

Winter wheat
Winter barley
Oilseed rape
Maize
Potatoes
Wheat

24

What are organic rotations?

No use of chemical control
Longer breaks between same family
Increased risk of pests and diseases